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electron/docs/breaking-changes.md

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Breaking Changes

Breaking changes will be documented here, and deprecation warnings added to JS code where possible, at least one major version before the change is made.

Types of Breaking Changes

This document uses the following convention to categorize breaking changes:

  • API Changed: An API was changed in such a way that code that has not been updated is guaranteed to throw an exception.
  • Behavior Changed: The behavior of Electron has changed, but not in such a way that an exception will necessarily be thrown.
  • Default Changed: Code depending on the old default may break, not necessarily throwing an exception. The old behavior can be restored by explicitly specifying the value.
  • Deprecated: An API was marked as deprecated. The API will continue to function, but will emit a deprecation warning, and will be removed in a future release.
  • Removed: An API or feature was removed, and is no longer supported by Electron.

Planned Breaking API Changes (35.0)

Deprecated: setPreloads, getPreloads on Session

registerPreloadScript, unregisterPreloadScript, and getPreloadScripts are introduced as a replacement for the deprecated methods. These new APIs allow third-party libraries to register preload scripts without replacing existing scripts. Also, the new type option allows for additional preload targets such as service-worker.

// Deprecated
session.setPreloads([path.join(__dirname, 'preload.js')])

// Replace with:
session.registerPreloadScript({
  type: 'frame',
  id: 'app-preload',
  filePath: path.join(__dirname, 'preload.js')
})

Planned Breaking API Changes (34.0)

Deprecated: level, message, line, and sourceId arguments in console-message event on WebContents

The console-message event on WebContents has been updated to provide details on the Event argument.

// Deprecated
webContents.on('console-message', (event, level, message, line, sourceId) => {})

// Replace with:
webContents.on('console-message', ({ level, message, lineNumber, sourceId, frame }) => {})

Additionally, level is now a string with possible values of info, warning, error, and debug.

Planned Breaking API Changes (33.0)

Behavior Changed: frame properties may retrieve detached WebFrameMain instances or none at all

APIs which provide access to a WebFrameMain instance may return an instance with frame.detached set to true, or possibly return null.

When a frame performs a cross-origin navigation, it enters into a detached state in which it's no longer attached to the page. In this state, it may be running unload handlers prior to being deleted. In the event of an IPC sent during this state, frame.detached will be set to true with the frame being destroyed shortly thereafter.

When receiving an event, it's important to access WebFrameMain properties immediately upon being received. Otherwise, it's not guaranteed to point to the same webpage as when received. To avoid misaligned expectations, Electron will return null in the case of late access where the webpage has changed.

ipcMain.on('unload-event', (event) => {
  event.senderFrame; // ✅ accessed immediately
});

ipcMain.on('unload-event', async (event) => {
  await crossOriginNavigationPromise;
  event.senderFrame; // ❌ returns `null` due to late access
});

Behavior Changed: custom protocol URL handling on Windows

Due to changes made in Chromium to support Non-Special Scheme URLs, custom protocol URLs that use Windows file paths will no longer work correctly with the deprecated protocol.registerFileProtocol and the baseURLForDataURL property on BrowserWindow.loadURL, WebContents.loadURL, and <webview>.loadURL. protocol.handle will also not work with these types of URLs but this is not a change since it has always worked that way.

// No longer works
protocol.registerFileProtocol('other', () => {
  callback({ filePath: '/path/to/my/file' })
})

const mainWindow = new BrowserWindow()
mainWindow.loadURL('data:text/html,<script src="loaded-from-dataurl.js"></script>', { baseURLForDataURL: 'other://C:\\myapp' })
mainWindow.loadURL('other://C:\\myapp\\index.html')

// Replace with
const path = require('node:path')
const nodeUrl = require('node:url')
protocol.handle(other, (req) => {
  const srcPath = 'C:\\myapp\\'
  const reqURL = new URL(req.url)
  return net.fetch(nodeUrl.pathToFileURL(path.join(srcPath, reqURL.pathname)).toString())
})

mainWindow.loadURL('data:text/html,<script src="loaded-from-dataurl.js"></script>', { baseURLForDataURL: 'other://' })
mainWindow.loadURL('other://index.html')

Behavior Changed: menu bar will be hidden during fullscreen on Windows

This brings the behavior to parity with Linux. Prior behavior: Menu bar is still visible during fullscreen on Windows. New behavior: Menu bar is hidden during fullscreen on Windows.

Behavior Changed: webContents property on login on app

The webContents property in the login event from app will be null when the event is triggered for requests from the utility process created with respondToAuthRequestsFromMainProcess option.

Deprecated: textured option in BrowserWindowConstructorOption.type

The textured option of type in BrowserWindowConstructorOptions has been deprecated with no replacement. This option relied on the NSWindowStyleMaskTexturedBackground style mask on macOS, which has been deprecated with no alternative.

Removed: macOS 10.15 support

macOS 10.15 (Catalina) is no longer supported by Chromium.

Older versions of Electron will continue to run on Catalina, but macOS 11 (Big Sur) or later will be required to run Electron v33.0.0 and higher.

Deprecated: systemPreferences.accessibilityDisplayShouldReduceTransparency

The systemPreferences.accessibilityDisplayShouldReduceTransparency property is now deprecated in favor of the new nativeTheme.prefersReducedTransparency, which provides identical information and works cross-platform.

// Deprecated
const shouldReduceTransparency = systemPreferences.accessibilityDisplayShouldReduceTransparency

// Replace with:
const prefersReducedTransparency = nativeTheme.prefersReducedTransparency

Planned Breaking API Changes (32.0)

Removed: File.path

The nonstandard path property of the Web File object was added in an early version of Electron as a convenience method for working with native files when doing everything in the renderer was more common. However, it represents a deviation from the standard and poses a minor security risk as well, so beginning in Electron 32.0 it has been removed in favor of the webUtils.getPathForFile method.

// Before (renderer)

const file = document.querySelector('input[type=file]')
alert(`Uploaded file path was: ${file.path}`)

// After (renderer)

const file = document.querySelector('input[type=file]')
electron.showFilePath(file)

// (preload)
const { contextBridge, webUtils } = require('electron')

contextBridge.exposeInMainWorld('electron', {
  showFilePath (file) {
    // It's best not to expose the full file path to the web content if
    // possible.
    const path = webUtils.getPathForFile(file)
    alert(`Uploaded file path was: ${path}`)
  }
})

Deprecated: clearHistory, canGoBack, goBack, canGoForward, goForward, goToIndex, canGoToOffset, goToOffset on WebContents

The navigation-related APIs are now deprecated.

These APIs have been moved to the navigationHistory property of WebContents to provide a more structured and intuitive interface for managing navigation history.

// Deprecated
win.webContents.clearHistory()
win.webContents.canGoBack()
win.webContents.goBack()
win.webContents.canGoForward()
win.webContents.goForward()
win.webContents.goToIndex(index)
win.webContents.canGoToOffset()
win.webContents.goToOffset(index)

// Replace with
win.webContents.navigationHistory.clear()
win.webContents.navigationHistory.canGoBack()
win.webContents.navigationHistory.goBack()
win.webContents.navigationHistory.canGoForward()
win.webContents.navigationHistory.goForward()
win.webContents.navigationHistory.canGoToOffset()
win.webContents.navigationHistory.goToOffset(index)

Planned Breaking API Changes (31.0)

Removed: WebSQL support

Chromium has removed support for WebSQL upstream, transitioning it to Android only. See Chromium's intent to remove discussion for more information.

Behavior Changed: nativeImage.toDataURL will preserve PNG colorspace

PNG decoder implementation has been changed to preserve colorspace data, the encoded data returned from this function now matches it.

See crbug.com/332584706 for more information.

Behavior Changed: window.flashFrame(bool) will flash dock icon continuously on macOS

This brings the behavior to parity with Windows and Linux. Prior behavior: The first flashFrame(true) bounces the dock icon only once (using the NSInformationalRequest level) and flashFrame(false) does nothing. New behavior: Flash continuously until flashFrame(false) is called. This uses the NSCriticalRequest level instead. To explicitly use NSInformationalRequest to cause a single dock icon bounce, it is still possible to use dock.bounce('informational').

Planned Breaking API Changes (30.0)

Behavior Changed: cross-origin iframes now use Permission Policy to access features

Cross-origin iframes must now specify features available to a given iframe via the allow attribute in order to access them.

See documentation for more information.

Removed: The --disable-color-correct-rendering switch

This switch was never formally documented but it's removal is being noted here regardless. Chromium itself now has better support for color spaces so this flag should not be needed.

Behavior Changed: BrowserView.setAutoResize behavior on macOS

In Electron 30, BrowserView is now a wrapper around the new WebContentsView API.

Previously, the setAutoResize function of the BrowserView API was backed by autoresizing on macOS, and by a custom algorithm on Windows and Linux. For simple use cases such as making a BrowserView fill the entire window, the behavior of these two approaches was identical. However, in more advanced cases, BrowserViews would be autoresized differently on macOS than they would be on other platforms, as the custom resizing algorithm for Windows and Linux did not perfectly match the behavior of macOS's autoresizing API. The autoresizing behavior is now standardized across all platforms.

If your app uses BrowserView.setAutoResize to do anything more complex than making a BrowserView fill the entire window, it's likely you already had custom logic in place to handle this difference in behavior on macOS. If so, that logic will no longer be needed in Electron 30 as autoresizing behavior is consistent.

Deprecated: BrowserView

The BrowserView class has been deprecated and replaced by the new WebContentsView class.

BrowserView related methods in BrowserWindow have also been deprecated:

BrowserWindow.fromBrowserView(browserView)
win.setBrowserView(browserView)
win.getBrowserView()
win.addBrowserView(browserView)
win.removeBrowserView(browserView)
win.setTopBrowserView(browserView)
win.getBrowserViews()

Removed: params.inputFormType property on context-menu on WebContents

The inputFormType property of the params object in the context-menu event from WebContents has been removed. Use the new formControlType property instead.

Removed: process.getIOCounters()

Chromium has removed access to this information.

Planned Breaking API Changes (29.0)

Behavior Changed: ipcRenderer can no longer be sent over the contextBridge

Attempting to send the entire ipcRenderer module as an object over the contextBridge will now result in an empty object on the receiving side of the bridge. This change was made to remove / mitigate a security footgun. You should not directly expose ipcRenderer or its methods over the bridge. Instead, provide a safe wrapper like below:

contextBridge.exposeInMainWorld('app', {
  onEvent: (cb) => ipcRenderer.on('foo', (e, ...args) => cb(args))
})

Removed: renderer-process-crashed event on app

The renderer-process-crashed event on app has been removed. Use the new render-process-gone event instead.

// Removed
app.on('renderer-process-crashed', (event, webContents, killed) => { /* ... */ })

// Replace with
app.on('render-process-gone', (event, webContents, details) => { /* ... */ })

Removed: crashed event on WebContents and <webview>

The crashed events on WebContents and <webview> have been removed. Use the new render-process-gone event instead.

// Removed
win.webContents.on('crashed', (event, killed) => { /* ... */ })
webview.addEventListener('crashed', (event) => { /* ... */ })

// Replace with
win.webContents.on('render-process-gone', (event, details) => { /* ... */ })
webview.addEventListener('render-process-gone', (event) => { /* ... */ })

Removed: gpu-process-crashed event on app

The gpu-process-crashed event on app has been removed. Use the new child-process-gone event instead.

// Removed
app.on('gpu-process-crashed', (event, killed) => { /* ... */ })

// Replace with
app.on('child-process-gone', (event, details) => { /* ... */ })

Planned Breaking API Changes (28.0)

Behavior Changed: WebContents.backgroundThrottling set to false affects all WebContents in the host BrowserWindow

WebContents.backgroundThrottling set to false will disable frames throttling in the BrowserWindow for all WebContents displayed by it.

Removed: BrowserWindow.setTrafficLightPosition(position)

BrowserWindow.setTrafficLightPosition(position) has been removed, the BrowserWindow.setWindowButtonPosition(position) API should be used instead which accepts null instead of { x: 0, y: 0 } to reset the position to system default.

// Removed in Electron 28
win.setTrafficLightPosition({ x: 10, y: 10 })
win.setTrafficLightPosition({ x: 0, y: 0 })

// Replace with
win.setWindowButtonPosition({ x: 10, y: 10 })
win.setWindowButtonPosition(null)

Removed: BrowserWindow.getTrafficLightPosition()

BrowserWindow.getTrafficLightPosition() has been removed, the BrowserWindow.getWindowButtonPosition() API should be used instead which returns null instead of { x: 0, y: 0 } when there is no custom position.

// Removed in Electron 28
const pos = win.getTrafficLightPosition()
if (pos.x === 0 && pos.y === 0) {
  // No custom position.
}

// Replace with
const ret = win.getWindowButtonPosition()
if (ret === null) {
  // No custom position.
}

Removed: ipcRenderer.sendTo()

The ipcRenderer.sendTo() API has been removed. It should be replaced by setting up a MessageChannel between the renderers.

The senderId and senderIsMainFrame properties of IpcRendererEvent have been removed as well.

Removed: app.runningUnderRosettaTranslation

The app.runningUnderRosettaTranslation property has been removed. Use app.runningUnderARM64Translation instead.

// Removed
console.log(app.runningUnderRosettaTranslation)
// Replace with
console.log(app.runningUnderARM64Translation)

Deprecated: renderer-process-crashed event on app

The renderer-process-crashed event on app has been deprecated. Use the new render-process-gone event instead.

// Deprecated
app.on('renderer-process-crashed', (event, webContents, killed) => { /* ... */ })

// Replace with
app.on('render-process-gone', (event, webContents, details) => { /* ... */ })

Deprecated: params.inputFormType property on context-menu on WebContents

The inputFormType property of the params object in the context-menu event from WebContents has been deprecated. Use the new formControlType property instead.

Deprecated: crashed event on WebContents and <webview>

The crashed events on WebContents and <webview> have been deprecated. Use the new render-process-gone event instead.

// Deprecated
win.webContents.on('crashed', (event, killed) => { /* ... */ })
webview.addEventListener('crashed', (event) => { /* ... */ })

// Replace with
win.webContents.on('render-process-gone', (event, details) => { /* ... */ })
webview.addEventListener('render-process-gone', (event) => { /* ... */ })

Deprecated: gpu-process-crashed event on app

The gpu-process-crashed event on app has been deprecated. Use the new child-process-gone event instead.

// Deprecated
app.on('gpu-process-crashed', (event, killed) => { /* ... */ })

// Replace with
app.on('child-process-gone', (event, details) => { /* ... */ })

Planned Breaking API Changes (27.0)

Removed: macOS 10.13 / 10.14 support

macOS 10.13 (High Sierra) and macOS 10.14 (Mojave) are no longer supported by Chromium.

Older versions of Electron will continue to run on these operating systems, but macOS 10.15 (Catalina) or later will be required to run Electron v27.0.0 and higher.

Deprecated: ipcRenderer.sendTo()

The ipcRenderer.sendTo() API has been deprecated. It should be replaced by setting up a MessageChannel between the renderers.

The senderId and senderIsMainFrame properties of IpcRendererEvent have been deprecated as well.

Removed: color scheme events in systemPreferences

The following systemPreferences events have been removed:

  • inverted-color-scheme-changed
  • high-contrast-color-scheme-changed

Use the new updated event on the nativeTheme module instead.

// Removed
systemPreferences.on('inverted-color-scheme-changed', () => { /* ... */ })
systemPreferences.on('high-contrast-color-scheme-changed', () => { /* ... */ })

// Replace with
nativeTheme.on('updated', () => { /* ... */ })

Removed: Some window.setVibrancy options on macOS

The following vibrancy options have been removed:

  • 'light'
  • 'medium-light'
  • 'dark'
  • 'ultra-dark'
  • 'appearance-based'

These were previously deprecated and have been removed by Apple in 10.15.

Removed: webContents.getPrinters

The webContents.getPrinters method has been removed. Use webContents.getPrintersAsync instead.

const w = new BrowserWindow({ show: false })

// Removed
console.log(w.webContents.getPrinters())
// Replace with
w.webContents.getPrintersAsync().then((printers) => {
  console.log(printers)
})

Removed: systemPreferences.{get,set}AppLevelAppearance and systemPreferences.appLevelAppearance

The systemPreferences.getAppLevelAppearance and systemPreferences.setAppLevelAppearance methods have been removed, as well as the systemPreferences.appLevelAppearance property. Use the nativeTheme module instead.

// Removed
systemPreferences.getAppLevelAppearance()
// Replace with
nativeTheme.shouldUseDarkColors

// Removed
systemPreferences.appLevelAppearance
// Replace with
nativeTheme.shouldUseDarkColors

// Removed
systemPreferences.setAppLevelAppearance('dark')
// Replace with
nativeTheme.themeSource = 'dark'

Removed: alternate-selected-control-text value for systemPreferences.getColor

The alternate-selected-control-text value for systemPreferences.getColor has been removed. Use selected-content-background instead.

// Removed
systemPreferences.getColor('alternate-selected-control-text')
// Replace with
systemPreferences.getColor('selected-content-background')

Planned Breaking API Changes (26.0)

Deprecated: webContents.getPrinters

The webContents.getPrinters method has been deprecated. Use webContents.getPrintersAsync instead.

const w = new BrowserWindow({ show: false })

// Deprecated
console.log(w.webContents.getPrinters())
// Replace with
w.webContents.getPrintersAsync().then((printers) => {
  console.log(printers)
})

Deprecated: systemPreferences.{get,set}AppLevelAppearance and systemPreferences.appLevelAppearance

The systemPreferences.getAppLevelAppearance and systemPreferences.setAppLevelAppearance methods have been deprecated, as well as the systemPreferences.appLevelAppearance property. Use the nativeTheme module instead.

// Deprecated
systemPreferences.getAppLevelAppearance()
// Replace with
nativeTheme.shouldUseDarkColors

// Deprecated
systemPreferences.appLevelAppearance
// Replace with
nativeTheme.shouldUseDarkColors

// Deprecated
systemPreferences.setAppLevelAppearance('dark')
// Replace with
nativeTheme.themeSource = 'dark'

Deprecated: alternate-selected-control-text value for systemPreferences.getColor

The alternate-selected-control-text value for systemPreferences.getColor has been deprecated. Use selected-content-background instead.

// Deprecated
systemPreferences.getColor('alternate-selected-control-text')
// Replace with
systemPreferences.getColor('selected-content-background')

Planned Breaking API Changes (25.0)

Deprecated: protocol.{un,}{register,intercept}{Buffer,String,Stream,File,Http}Protocol and protocol.isProtocol{Registered,Intercepted}

The protocol.register*Protocol and protocol.intercept*Protocol methods have been replaced with protocol.handle.

The new method can either register a new protocol or intercept an existing protocol, and responses can be of any type.

// Deprecated in Electron 25
protocol.registerBufferProtocol('some-protocol', () => {
  callback({ mimeType: 'text/html', data: Buffer.from('<h5>Response</h5>') })
})

// Replace with
protocol.handle('some-protocol', () => {
  return new Response(
    Buffer.from('<h5>Response</h5>'), // Could also be a string or ReadableStream.
    { headers: { 'content-type': 'text/html' } }
  )
})

// Deprecated in Electron 25
protocol.registerHttpProtocol('some-protocol', () => {
  callback({ url: 'https://electronjs.org' })
})

// Replace with
protocol.handle('some-protocol', () => {
  return net.fetch('https://electronjs.org')
})

// Deprecated in Electron 25
protocol.registerFileProtocol('some-protocol', () => {
  callback({ filePath: '/path/to/my/file' })
})

// Replace with
protocol.handle('some-protocol', () => {
  return net.fetch('file:///path/to/my/file')
})

Deprecated: BrowserWindow.setTrafficLightPosition(position)

BrowserWindow.setTrafficLightPosition(position) has been deprecated, the BrowserWindow.setWindowButtonPosition(position) API should be used instead which accepts null instead of { x: 0, y: 0 } to reset the position to system default.

// Deprecated in Electron 25
win.setTrafficLightPosition({ x: 10, y: 10 })
win.setTrafficLightPosition({ x: 0, y: 0 })

// Replace with
win.setWindowButtonPosition({ x: 10, y: 10 })
win.setWindowButtonPosition(null)

Deprecated: BrowserWindow.getTrafficLightPosition()

BrowserWindow.getTrafficLightPosition() has been deprecated, the BrowserWindow.getWindowButtonPosition() API should be used instead which returns null instead of { x: 0, y: 0 } when there is no custom position.

// Deprecated in Electron 25
const pos = win.getTrafficLightPosition()
if (pos.x === 0 && pos.y === 0) {
  // No custom position.
}

// Replace with
const ret = win.getWindowButtonPosition()
if (ret === null) {
  // No custom position.
}

Planned Breaking API Changes (24.0)

API Changed: nativeImage.createThumbnailFromPath(path, size)

The maxSize parameter has been changed to size to reflect that the size passed in will be the size the thumbnail created. Previously, Windows would not scale the image up if it were smaller than maxSize, and macOS would always set the size to maxSize. Behavior is now the same across platforms.

Updated Behavior:

// a 128x128 image.
const imagePath = path.join('path', 'to', 'capybara.png')

// Scaling up a smaller image.
const upSize = { width: 256, height: 256 }
nativeImage.createThumbnailFromPath(imagePath, upSize).then(result => {
  console.log(result.getSize()) // { width: 256, height: 256 }
})

// Scaling down a larger image.
const downSize = { width: 64, height: 64 }
nativeImage.createThumbnailFromPath(imagePath, downSize).then(result => {
  console.log(result.getSize()) // { width: 64, height: 64 }
})

Previous Behavior (on Windows):

// a 128x128 image
const imagePath = path.join('path', 'to', 'capybara.png')
const size = { width: 256, height: 256 }
nativeImage.createThumbnailFromPath(imagePath, size).then(result => {
  console.log(result.getSize()) // { width: 128, height: 128 }
})

Planned Breaking API Changes (23.0)

Behavior Changed: Draggable Regions on macOS

The implementation of draggable regions (using the CSS property -webkit-app-region: drag) has changed on macOS to bring it in line with Windows and Linux. Previously, when a region with -webkit-app-region: no-drag overlapped a region with -webkit-app-region: drag, the no-drag region would always take precedence on macOS, regardless of CSS layering. That is, if a drag region was above a no-drag region, it would be ignored. Beginning in Electron 23, a drag region on top of a no-drag region will correctly cause the region to be draggable.

Additionally, the customButtonsOnHover BrowserWindow property previously created a draggable region which ignored the -webkit-app-region CSS property. This has now been fixed (see #37210 for discussion).

As a result, if your app uses a frameless window with draggable regions on macOS, the regions which are draggable in your app may change in Electron 23.

Removed: Windows 7 / 8 / 8.1 support

Windows 7, Windows 8, and Windows 8.1 are no longer supported. Electron follows the planned Chromium deprecation policy, which will deprecate Windows 7 support beginning in Chromium 109.

Older versions of Electron will continue to run on these operating systems, but Windows 10 or later will be required to run Electron v23.0.0 and higher.

Removed: BrowserWindow scroll-touch-* events

The deprecated scroll-touch-begin, scroll-touch-end and scroll-touch-edge events on BrowserWindow have been removed. Instead, use the newly available input-event event on WebContents.

// Removed in Electron 23.0
win.on('scroll-touch-begin', scrollTouchBegin)
win.on('scroll-touch-edge', scrollTouchEdge)
win.on('scroll-touch-end', scrollTouchEnd)

// Replace with
win.webContents.on('input-event', (_, event) => {
  if (event.type === 'gestureScrollBegin') {
    scrollTouchBegin()
  } else if (event.type === 'gestureScrollUpdate') {
    scrollTouchEdge()
  } else if (event.type === 'gestureScrollEnd') {
    scrollTouchEnd()
  }
})

Removed: webContents.incrementCapturerCount(stayHidden, stayAwake)

The webContents.incrementCapturerCount(stayHidden, stayAwake) function has been removed. It is now automatically handled by webContents.capturePage when a page capture completes.

const w = new BrowserWindow({ show: false })

// Removed in Electron 23
w.webContents.incrementCapturerCount()
w.capturePage().then(image => {
  console.log(image.toDataURL())
  w.webContents.decrementCapturerCount()
})

// Replace with
w.capturePage().then(image => {
  console.log(image.toDataURL())
})

Removed: webContents.decrementCapturerCount(stayHidden, stayAwake)

The webContents.decrementCapturerCount(stayHidden, stayAwake) function has been removed. It is now automatically handled by webContents.capturePage when a page capture completes.

const w = new BrowserWindow({ show: false })

// Removed in Electron 23
w.webContents.incrementCapturerCount()
w.capturePage().then(image => {
  console.log(image.toDataURL())
  w.webContents.decrementCapturerCount()
})

// Replace with
w.capturePage().then(image => {
  console.log(image.toDataURL())
})

Planned Breaking API Changes (22.0)

Deprecated: webContents.incrementCapturerCount(stayHidden, stayAwake)

webContents.incrementCapturerCount(stayHidden, stayAwake) has been deprecated. It is now automatically handled by webContents.capturePage when a page capture completes.

const w = new BrowserWindow({ show: false })

// Removed in Electron 23
w.webContents.incrementCapturerCount()
w.capturePage().then(image => {
  console.log(image.toDataURL())
  w.webContents.decrementCapturerCount()
})

// Replace with
w.capturePage().then(image => {
  console.log(image.toDataURL())
})

Deprecated: webContents.decrementCapturerCount(stayHidden, stayAwake)

webContents.decrementCapturerCount(stayHidden, stayAwake) has been deprecated. It is now automatically handled by webContents.capturePage when a page capture completes.

const w = new BrowserWindow({ show: false })

// Removed in Electron 23
w.webContents.incrementCapturerCount()
w.capturePage().then(image => {
  console.log(image.toDataURL())
  w.webContents.decrementCapturerCount()
})

// Replace with
w.capturePage().then(image => {
  console.log(image.toDataURL())
})

Removed: WebContents new-window event

The new-window event of WebContents has been removed. It is replaced by webContents.setWindowOpenHandler().

// Removed in Electron 22
webContents.on('new-window', (event) => {
  event.preventDefault()
})

// Replace with
webContents.setWindowOpenHandler((details) => {
  return { action: 'deny' }
})

Removed: <webview> new-window event

The new-window event of <webview> has been removed. There is no direct replacement.

// Removed in Electron 22
webview.addEventListener('new-window', (event) => {})

// Replace with

// main.js
mainWindow.webContents.on('did-attach-webview', (event, wc) => {
  wc.setWindowOpenHandler((details) => {
    mainWindow.webContents.send('webview-new-window', wc.id, details)
    return { action: 'deny' }
  })
})

// preload.js
const { ipcRenderer } = require('electron')
ipcRenderer.on('webview-new-window', (e, webContentsId, details) => {
  console.log('webview-new-window', webContentsId, details)
  document.getElementById('webview').dispatchEvent(new Event('new-window'))
})

// renderer.js
document.getElementById('webview').addEventListener('new-window', () => {
  console.log('got new-window event')
})

Deprecated: BrowserWindow scroll-touch-* events

The scroll-touch-begin, scroll-touch-end and scroll-touch-edge events on BrowserWindow are deprecated. Instead, use the newly available input-event event on WebContents.

// Deprecated
win.on('scroll-touch-begin', scrollTouchBegin)
win.on('scroll-touch-edge', scrollTouchEdge)
win.on('scroll-touch-end', scrollTouchEnd)

// Replace with
win.webContents.on('input-event', (_, event) => {
  if (event.type === 'gestureScrollBegin') {
    scrollTouchBegin()
  } else if (event.type === 'gestureScrollUpdate') {
    scrollTouchEdge()
  } else if (event.type === 'gestureScrollEnd') {
    scrollTouchEnd()
  }
})

Planned Breaking API Changes (21.0)

Behavior Changed: V8 Memory Cage enabled

The V8 memory cage has been enabled, which has implications for native modules which wrap non-V8 memory with ArrayBuffer or Buffer. See the blog post about the V8 memory cage for more details.

API Changed: webContents.printToPDF()

webContents.printToPDF() has been modified to conform to Page.printToPDF in the Chrome DevTools Protocol. This has been changes in order to address changes upstream that made our previous implementation untenable and rife with bugs.

Arguments Changed

  • pageRanges

Arguments Removed

  • printSelectionOnly
  • marginsType
  • headerFooter
  • scaleFactor

Arguments Added

  • headerTemplate
  • footerTemplate
  • displayHeaderFooter
  • margins
  • scale
  • preferCSSPageSize
// Main process
const { webContents } = require('electron')

webContents.printToPDF({
  landscape: true,
  displayHeaderFooter: true,
  printBackground: true,
  scale: 2,
  pageSize: 'Ledger',
  margins: {
    top: 2,
    bottom: 2,
    left: 2,
    right: 2
  },
  pageRanges: '1-5, 8, 11-13',
  headerTemplate: '<h1>Title</h1>',
  footerTemplate: '<div><span class="pageNumber"></span></div>',
  preferCSSPageSize: true
}).then(data => {
  fs.writeFile(pdfPath, data, (error) => {
    if (error) throw error
    console.log(`Wrote PDF successfully to ${pdfPath}`)
  })
}).catch(error => {
  console.log(`Failed to write PDF to ${pdfPath}: `, error)
})

Planned Breaking API Changes (20.0)

Removed: macOS 10.11 / 10.12 support

macOS 10.11 (El Capitan) and macOS 10.12 (Sierra) are no longer supported by Chromium.

Older versions of Electron will continue to run on these operating systems, but macOS 10.13 (High Sierra) or later will be required to run Electron v20.0.0 and higher.

Default Changed: renderers without nodeIntegration: true are sandboxed by default

Previously, renderers that specified a preload script defaulted to being unsandboxed. This meant that by default, preload scripts had access to Node.js. In Electron 20, this default has changed. Beginning in Electron 20, renderers will be sandboxed by default, unless nodeIntegration: true or sandbox: false is specified.

If your preload scripts do not depend on Node, no action is needed. If your preload scripts do depend on Node, either refactor them to remove Node usage from the renderer, or explicitly specify sandbox: false for the relevant renderers.

Removed: skipTaskbar on Linux

On X11, skipTaskbar sends a _NET_WM_STATE_SKIP_TASKBAR message to the X11 window manager. There is not a direct equivalent for Wayland, and the known workarounds have unacceptable tradeoffs (e.g. Window.is_skip_taskbar in GNOME requires unsafe mode), so Electron is unable to support this feature on Linux.

API Changed: session.setDevicePermissionHandler(handler)

The handler invoked when session.setDevicePermissionHandler(handler) is used has a change to its arguments. This handler no longer is passed a frame WebFrameMain, but instead is passed the origin, which is the origin that is checking for device permission.

Planned Breaking API Changes (19.0)

Removed: IA32 Linux binaries

This is a result of Chromium 102.0.4999.0 dropping support for IA32 Linux. This concludes the removal of support for IA32 Linux.

Planned Breaking API Changes (18.0)

Removed: nativeWindowOpen

Prior to Electron 15, window.open was by default shimmed to use BrowserWindowProxy. This meant that window.open('about:blank') did not work to open synchronously scriptable child windows, among other incompatibilities. Since Electron 15, nativeWindowOpen has been enabled by default.

See the documentation for window.open in Electron for more details.

Planned Breaking API Changes (17.0)

Removed: desktopCapturer.getSources in the renderer

The desktopCapturer.getSources API is now only available in the main process. This has been changed in order to improve the default security of Electron apps.

If you need this functionality, it can be replaced as follows:

// Main process
const { ipcMain, desktopCapturer } = require('electron')

ipcMain.handle(
  'DESKTOP_CAPTURER_GET_SOURCES',
  (event, opts) => desktopCapturer.getSources(opts)
)

// Renderer process
const { ipcRenderer } = require('electron')

const desktopCapturer = {
  getSources: (opts) => ipcRenderer.invoke('DESKTOP_CAPTURER_GET_SOURCES', opts)
}

However, you should consider further restricting the information returned to the renderer; for instance, displaying a source selector to the user and only returning the selected source.

Deprecated: nativeWindowOpen

Prior to Electron 15, window.open was by default shimmed to use BrowserWindowProxy. This meant that window.open('about:blank') did not work to open synchronously scriptable child windows, among other incompatibilities. Since Electron 15, nativeWindowOpen has been enabled by default.

See the documentation for window.open in Electron for more details.

Planned Breaking API Changes (16.0)

Behavior Changed: crashReporter implementation switched to Crashpad on Linux

The underlying implementation of the crashReporter API on Linux has changed from Breakpad to Crashpad, bringing it in line with Windows and Mac. As a result of this, child processes are now automatically monitored, and calling process.crashReporter.start in Node child processes is no longer needed (and is not advisable, as it will start a second instance of the Crashpad reporter).

There are also some subtle changes to how annotations will be reported on Linux, including that long values will no longer be split between annotations appended with __1, __2 and so on, and instead will be truncated at the (new, longer) annotation value limit.

Deprecated: desktopCapturer.getSources in the renderer

Usage of the desktopCapturer.getSources API in the renderer has been deprecated and will be removed. This change improves the default security of Electron apps.

See here for details on how to replace this API in your app.

Planned Breaking API Changes (15.0)

Default Changed: nativeWindowOpen defaults to true

Prior to Electron 15, window.open was by default shimmed to use BrowserWindowProxy. This meant that window.open('about:blank') did not work to open synchronously scriptable child windows, among other incompatibilities. nativeWindowOpen is no longer experimental, and is now the default.

See the documentation for window.open in Electron for more details.

Deprecated: app.runningUnderRosettaTranslation

The app.runningUnderRosettaTranslation property has been deprecated. Use app.runningUnderARM64Translation instead.

// Deprecated
console.log(app.runningUnderRosettaTranslation)
// Replace with
console.log(app.runningUnderARM64Translation)

Planned Breaking API Changes (14.0)

Removed: remote module

The remote module was deprecated in Electron 12, and will be removed in Electron 14. It is replaced by the @electron/remote module.

// Deprecated in Electron 12:
const { BrowserWindow } = require('electron').remote

// Replace with:
const { BrowserWindow } = require('@electron/remote')

// In the main process:
require('@electron/remote/main').initialize()

Removed: app.allowRendererProcessReuse

The app.allowRendererProcessReuse property will be removed as part of our plan to more closely align with Chromium's process model for security, performance and maintainability.

For more detailed information see #18397.

Removed: Browser Window Affinity

The affinity option when constructing a new BrowserWindow will be removed as part of our plan to more closely align with Chromium's process model for security, performance and maintainability.

For more detailed information see #18397.

API Changed: window.open()

The optional parameter frameName will no longer set the title of the window. This now follows the specification described by the native documentation under the corresponding parameter windowName.

If you were using this parameter to set the title of a window, you can instead use win.setTitle(title).

Removed: worldSafeExecuteJavaScript

In Electron 14, worldSafeExecuteJavaScript will be removed. There is no alternative, please ensure your code works with this property enabled. It has been enabled by default since Electron 12.

You will be affected by this change if you use either webFrame.executeJavaScript or webFrame.executeJavaScriptInIsolatedWorld. You will need to ensure that values returned by either of those methods are supported by the Context Bridge API as these methods use the same value passing semantics.

Removed: BrowserWindowConstructorOptions inheriting from parent windows

Prior to Electron 14, windows opened with window.open would inherit BrowserWindow constructor options such as transparent and resizable from their parent window. Beginning with Electron 14, this behavior is removed, and windows will not inherit any BrowserWindow constructor options from their parents.

Instead, explicitly set options for the new window with setWindowOpenHandler:

webContents.setWindowOpenHandler((details) => {
  return {
    action: 'allow',
    overrideBrowserWindowOptions: {
      // ...
    }
  }
})

Removed: additionalFeatures

The deprecated additionalFeatures property in the new-window and did-create-window events of WebContents has been removed. Since new-window uses positional arguments, the argument is still present, but will always be the empty array []. (Though note, the new-window event itself is deprecated, and is replaced by setWindowOpenHandler.) Bare keys in window features will now present as keys with the value true in the options object.

// Removed in Electron 14
// Triggered by window.open('...', '', 'my-key')
webContents.on('did-create-window', (window, details) => {
  if (details.additionalFeatures.includes('my-key')) {
    // ...
  }
})

// Replace with
webContents.on('did-create-window', (window, details) => {
  if (details.options['my-key']) {
    // ...
  }
})

Planned Breaking API Changes (13.0)

API Changed: session.setPermissionCheckHandler(handler)

The handler methods first parameter was previously always a webContents, it can now sometimes be null. You should use the requestingOrigin, embeddingOrigin and securityOrigin properties to respond to the permission check correctly. As the webContents can be null it can no longer be relied on.

// Old code
session.setPermissionCheckHandler((webContents, permission) => {
  if (webContents.getURL().startsWith('https://google.com/') && permission === 'notification') {
    return true
  }
  return false
})

// Replace with
session.setPermissionCheckHandler((webContents, permission, requestingOrigin) => {
  if (new URL(requestingOrigin).hostname === 'google.com' && permission === 'notification') {
    return true
  }
  return false
})

Removed: shell.moveItemToTrash()

The deprecated synchronous shell.moveItemToTrash() API has been removed. Use the asynchronous shell.trashItem() instead.

// Removed in Electron 13
shell.moveItemToTrash(path)
// Replace with
shell.trashItem(path).then(/* ... */)

Removed: BrowserWindow extension APIs

The deprecated extension APIs have been removed:

  • BrowserWindow.addExtension(path)
  • BrowserWindow.addDevToolsExtension(path)
  • BrowserWindow.removeExtension(name)
  • BrowserWindow.removeDevToolsExtension(name)
  • BrowserWindow.getExtensions()
  • BrowserWindow.getDevToolsExtensions()

Use the session APIs instead:

  • ses.loadExtension(path)
  • ses.removeExtension(extension_id)
  • ses.getAllExtensions()
// Removed in Electron 13
BrowserWindow.addExtension(path)
BrowserWindow.addDevToolsExtension(path)
// Replace with
session.defaultSession.loadExtension(path)

// Removed in Electron 13
BrowserWindow.removeExtension(name)
BrowserWindow.removeDevToolsExtension(name)
// Replace with
session.defaultSession.removeExtension(extension_id)

// Removed in Electron 13
BrowserWindow.getExtensions()
BrowserWindow.getDevToolsExtensions()
// Replace with
session.defaultSession.getAllExtensions()

Removed: methods in systemPreferences

The following systemPreferences methods have been deprecated:

  • systemPreferences.isDarkMode()
  • systemPreferences.isInvertedColorScheme()
  • systemPreferences.isHighContrastColorScheme()

Use the following nativeTheme properties instead:

  • nativeTheme.shouldUseDarkColors
  • nativeTheme.shouldUseInvertedColorScheme
  • nativeTheme.shouldUseHighContrastColors
// Removed in Electron 13
systemPreferences.isDarkMode()
// Replace with
nativeTheme.shouldUseDarkColors

// Removed in Electron 13
systemPreferences.isInvertedColorScheme()
// Replace with
nativeTheme.shouldUseInvertedColorScheme

// Removed in Electron 13
systemPreferences.isHighContrastColorScheme()
// Replace with
nativeTheme.shouldUseHighContrastColors

Deprecated: WebContents new-window event

The new-window event of WebContents has been deprecated. It is replaced by webContents.setWindowOpenHandler().

// Deprecated in Electron 13
webContents.on('new-window', (event) => {
  event.preventDefault()
})

// Replace with
webContents.setWindowOpenHandler((details) => {
  return { action: 'deny' }
})

Planned Breaking API Changes (12.0)

Removed: Pepper Flash support

Chromium has removed support for Flash, and so we must follow suit. See Chromium's Flash Roadmap for more details.

Default Changed: worldSafeExecuteJavaScript defaults to true

In Electron 12, worldSafeExecuteJavaScript will be enabled by default. To restore the previous behavior, worldSafeExecuteJavaScript: false must be specified in WebPreferences. Please note that setting this option to false is insecure.

This option will be removed in Electron 14 so please migrate your code to support the default value.

Default Changed: contextIsolation defaults to true

In Electron 12, contextIsolation will be enabled by default. To restore the previous behavior, contextIsolation: false must be specified in WebPreferences.

We recommend having contextIsolation enabled for the security of your application.

Another implication is that require() cannot be used in the renderer process unless nodeIntegration is true and contextIsolation is false.

For more details see: https://github.com/electron/electron/issues/23506

Removed: crashReporter.getCrashesDirectory()

The crashReporter.getCrashesDirectory method has been removed. Usage should be replaced by app.getPath('crashDumps').

// Removed in Electron 12
crashReporter.getCrashesDirectory()
// Replace with
app.getPath('crashDumps')

Removed: crashReporter methods in the renderer process

The following crashReporter methods are no longer available in the renderer process:

  • crashReporter.start
  • crashReporter.getLastCrashReport
  • crashReporter.getUploadedReports
  • crashReporter.getUploadToServer
  • crashReporter.setUploadToServer
  • crashReporter.getCrashesDirectory

They should be called only from the main process.

See #23265 for more details.

Default Changed: crashReporter.start({ compress: true })

The default value of the compress option to crashReporter.start has changed from false to true. This means that crash dumps will be uploaded to the crash ingestion server with the Content-Encoding: gzip header, and the body will be compressed.

If your crash ingestion server does not support compressed payloads, you can turn off compression by specifying { compress: false } in the crash reporter options.

Deprecated: remote module

The remote module is deprecated in Electron 12, and will be removed in Electron 14. It is replaced by the @electron/remote module.

// Deprecated in Electron 12:
const { BrowserWindow } = require('electron').remote

// Replace with:
const { BrowserWindow } = require('@electron/remote')

// In the main process:
require('@electron/remote/main').initialize()

Deprecated: shell.moveItemToTrash()

The synchronous shell.moveItemToTrash() has been replaced by the new, asynchronous shell.trashItem().

// Deprecated in Electron 12
shell.moveItemToTrash(path)
// Replace with
shell.trashItem(path).then(/* ... */)

Planned Breaking API Changes (11.0)

Removed: BrowserView.{destroy, fromId, fromWebContents, getAllViews} and id property of BrowserView

The experimental APIs BrowserView.{destroy, fromId, fromWebContents, getAllViews} have now been removed. Additionally, the id property of BrowserView has also been removed.

For more detailed information, see #23578.

Planned Breaking API Changes (10.0)

Deprecated: companyName argument to crashReporter.start()

The companyName argument to crashReporter.start(), which was previously required, is now optional, and further, is deprecated. To get the same behavior in a non-deprecated way, you can pass a companyName value in globalExtra.

// Deprecated in Electron 10
crashReporter.start({ companyName: 'Umbrella Corporation' })
// Replace with
crashReporter.start({ globalExtra: { _companyName: 'Umbrella Corporation' } })

Deprecated: crashReporter.getCrashesDirectory()

The crashReporter.getCrashesDirectory method has been deprecated. Usage should be replaced by app.getPath('crashDumps').

// Deprecated in Electron 10
crashReporter.getCrashesDirectory()
// Replace with
app.getPath('crashDumps')

Deprecated: crashReporter methods in the renderer process

Calling the following crashReporter methods from the renderer process is deprecated:

  • crashReporter.start
  • crashReporter.getLastCrashReport
  • crashReporter.getUploadedReports
  • crashReporter.getUploadToServer
  • crashReporter.setUploadToServer
  • crashReporter.getCrashesDirectory

The only non-deprecated methods remaining in the crashReporter module in the renderer are addExtraParameter, removeExtraParameter and getParameters.

All above methods remain non-deprecated when called from the main process.

See #23265 for more details.

Deprecated: crashReporter.start({ compress: false })

Setting { compress: false } in crashReporter.start is deprecated. Nearly all crash ingestion servers support gzip compression. This option will be removed in a future version of Electron.

Default Changed: enableRemoteModule defaults to false

In Electron 9, using the remote module without explicitly enabling it via the enableRemoteModule WebPreferences option began emitting a warning. In Electron 10, the remote module is now disabled by default. To use the remote module, enableRemoteModule: true must be specified in WebPreferences:

const w = new BrowserWindow({
  webPreferences: {
    enableRemoteModule: true
  }
})

We recommend moving away from the remote module.

protocol.unregisterProtocol

protocol.uninterceptProtocol

The APIs are now synchronous and the optional callback is no longer needed.

// Deprecated
protocol.unregisterProtocol(scheme, () => { /* ... */ })
// Replace with
protocol.unregisterProtocol(scheme)

protocol.registerFileProtocol

protocol.registerBufferProtocol

protocol.registerStringProtocol

protocol.registerHttpProtocol

protocol.registerStreamProtocol

protocol.interceptFileProtocol

protocol.interceptStringProtocol

protocol.interceptBufferProtocol

protocol.interceptHttpProtocol

protocol.interceptStreamProtocol

The APIs are now synchronous and the optional callback is no longer needed.

// Deprecated
protocol.registerFileProtocol(scheme, handler, () => { /* ... */ })
// Replace with
protocol.registerFileProtocol(scheme, handler)

The registered or intercepted protocol does not have effect on current page until navigation happens.

protocol.isProtocolHandled

This API is deprecated and users should use protocol.isProtocolRegistered and protocol.isProtocolIntercepted instead.

// Deprecated
protocol.isProtocolHandled(scheme).then(() => { /* ... */ })
// Replace with
const isRegistered = protocol.isProtocolRegistered(scheme)
const isIntercepted = protocol.isProtocolIntercepted(scheme)

Planned Breaking API Changes (9.0)

Default Changed: Loading non-context-aware native modules in the renderer process is disabled by default

As of Electron 9 we do not allow loading of non-context-aware native modules in the renderer process. This is to improve security, performance and maintainability of Electron as a project.

If this impacts you, you can temporarily set app.allowRendererProcessReuse to false to revert to the old behavior. This flag will only be an option until Electron 11 so you should plan to update your native modules to be context aware.

For more detailed information see #18397.

Deprecated: BrowserWindow extension APIs

The following extension APIs have been deprecated:

  • BrowserWindow.addExtension(path)
  • BrowserWindow.addDevToolsExtension(path)
  • BrowserWindow.removeExtension(name)
  • BrowserWindow.removeDevToolsExtension(name)
  • BrowserWindow.getExtensions()
  • BrowserWindow.getDevToolsExtensions()

Use the session APIs instead:

  • ses.loadExtension(path)
  • ses.removeExtension(extension_id)
  • ses.getAllExtensions()
// Deprecated in Electron 9
BrowserWindow.addExtension(path)
BrowserWindow.addDevToolsExtension(path)
// Replace with
session.defaultSession.loadExtension(path)

// Deprecated in Electron 9
BrowserWindow.removeExtension(name)
BrowserWindow.removeDevToolsExtension(name)
// Replace with
session.defaultSession.removeExtension(extension_id)

// Deprecated in Electron 9
BrowserWindow.getExtensions()
BrowserWindow.getDevToolsExtensions()
// Replace with
session.defaultSession.getAllExtensions()

Removed: <webview>.getWebContents()

This API, which was deprecated in Electron 8.0, is now removed.

// Removed in Electron 9.0
webview.getWebContents()
// Replace with
const { remote } = require('electron')
remote.webContents.fromId(webview.getWebContentsId())

Removed: webFrame.setLayoutZoomLevelLimits()

Chromium has removed support for changing the layout zoom level limits, and it is beyond Electron's capacity to maintain it. The function was deprecated in Electron 8.x, and has been removed in Electron 9.x. The layout zoom level limits are now fixed at a minimum of 0.25 and a maximum of 5.0, as defined here.

Behavior Changed: Sending non-JS objects over IPC now throws an exception

In Electron 8.0, IPC was changed to use the Structured Clone Algorithm, bringing significant performance improvements. To help ease the transition, the old IPC serialization algorithm was kept and used for some objects that aren't serializable with Structured Clone. In particular, DOM objects (e.g. Element, Location and DOMMatrix), Node.js objects backed by C++ classes (e.g. process.env, some members of Stream), and Electron objects backed by C++ classes (e.g. WebContents, BrowserWindow and WebFrame) are not serializable with Structured Clone. Whenever the old algorithm was invoked, a deprecation warning was printed.

In Electron 9.0, the old serialization algorithm has been removed, and sending such non-serializable objects will now throw an "object could not be cloned" error.

API Changed: shell.openItem is now shell.openPath

The shell.openItem API has been replaced with an asynchronous shell.openPath API. You can see the original API proposal and reasoning here.

Planned Breaking API Changes (8.0)

Behavior Changed: Values sent over IPC are now serialized with Structured Clone Algorithm

The algorithm used to serialize objects sent over IPC (through ipcRenderer.send, ipcRenderer.sendSync, WebContents.send and related methods) has been switched from a custom algorithm to V8's built-in Structured Clone Algorithm, the same algorithm used to serialize messages for postMessage. This brings about a 2x performance improvement for large messages, but also brings some breaking changes in behavior.

  • Sending Functions, Promises, WeakMaps, WeakSets, or objects containing any such values, over IPC will now throw an exception, instead of silently converting the functions to undefined.
// Previously:
ipcRenderer.send('channel', { value: 3, someFunction: () => {} })
// => results in { value: 3 } arriving in the main process

// From Electron 8:
ipcRenderer.send('channel', { value: 3, someFunction: () => {} })
// => throws Error("() => {} could not be cloned.")
  • NaN, Infinity and -Infinity will now be correctly serialized, instead of being converted to null.
  • Objects containing cyclic references will now be correctly serialized, instead of being converted to null.
  • Set, Map, Error and RegExp values will be correctly serialized, instead of being converted to {}.
  • BigInt values will be correctly serialized, instead of being converted to null.
  • Sparse arrays will be serialized as such, instead of being converted to dense arrays with nulls.
  • Date objects will be transferred as Date objects, instead of being converted to their ISO string representation.
  • Typed Arrays (such as Uint8Array, Uint16Array, Uint32Array and so on) will be transferred as such, instead of being converted to Node.js Buffer.
  • Node.js Buffer objects will be transferred as Uint8Arrays. You can convert a Uint8Array back to a Node.js Buffer by wrapping the underlying ArrayBuffer:
Buffer.from(value.buffer, value.byteOffset, value.byteLength)

Sending any objects that aren't native JS types, such as DOM objects (e.g. Element, Location, DOMMatrix), Node.js objects (e.g. process.env, Stream), or Electron objects (e.g. WebContents, BrowserWindow, WebFrame) is deprecated. In Electron 8, these objects will be serialized as before with a DeprecationWarning message, but starting in Electron 9, sending these kinds of objects will throw a 'could not be cloned' error.

Deprecated: <webview>.getWebContents()

This API is implemented using the remote module, which has both performance and security implications. Therefore its usage should be explicit.

// Deprecated
webview.getWebContents()
// Replace with
const { remote } = require('electron')
remote.webContents.fromId(webview.getWebContentsId())

However, it is recommended to avoid using the remote module altogether.

// main
const { ipcMain, webContents } = require('electron')

const getGuestForWebContents = (webContentsId, contents) => {
  const guest = webContents.fromId(webContentsId)
  if (!guest) {
    throw new Error(`Invalid webContentsId: ${webContentsId}`)
  }
  if (guest.hostWebContents !== contents) {
    throw new Error('Access denied to webContents')
  }
  return guest
}

ipcMain.handle('openDevTools', (event, webContentsId) => {
  const guest = getGuestForWebContents(webContentsId, event.sender)
  guest.openDevTools()
})

// renderer
const { ipcRenderer } = require('electron')

ipcRenderer.invoke('openDevTools', webview.getWebContentsId())

Deprecated: webFrame.setLayoutZoomLevelLimits()

Chromium has removed support for changing the layout zoom level limits, and it is beyond Electron's capacity to maintain it. The function will emit a warning in Electron 8.x, and cease to exist in Electron 9.x. The layout zoom level limits are now fixed at a minimum of 0.25 and a maximum of 5.0, as defined here.

Deprecated events in systemPreferences

The following systemPreferences events have been deprecated:

  • inverted-color-scheme-changed
  • high-contrast-color-scheme-changed

Use the new updated event on the nativeTheme module instead.

// Deprecated
systemPreferences.on('inverted-color-scheme-changed', () => { /* ... */ })
systemPreferences.on('high-contrast-color-scheme-changed', () => { /* ... */ })

// Replace with
nativeTheme.on('updated', () => { /* ... */ })

Deprecated: methods in systemPreferences

The following systemPreferences methods have been deprecated:

  • systemPreferences.isDarkMode()
  • systemPreferences.isInvertedColorScheme()
  • systemPreferences.isHighContrastColorScheme()

Use the following nativeTheme properties instead:

  • nativeTheme.shouldUseDarkColors
  • nativeTheme.shouldUseInvertedColorScheme
  • nativeTheme.shouldUseHighContrastColors
// Deprecated
systemPreferences.isDarkMode()
// Replace with
nativeTheme.shouldUseDarkColors

// Deprecated
systemPreferences.isInvertedColorScheme()
// Replace with
nativeTheme.shouldUseInvertedColorScheme

// Deprecated
systemPreferences.isHighContrastColorScheme()
// Replace with
nativeTheme.shouldUseHighContrastColors

Planned Breaking API Changes (7.0)

Deprecated: Atom.io Node Headers URL

This is the URL specified as disturl in a .npmrc file or as the --dist-url command line flag when building native Node modules. Both will be supported for the foreseeable future but it is recommended that you switch.

Deprecated: https://atom.io/download/electron

Replace with: https://electronjs.org/headers

API Changed: session.clearAuthCache() no longer accepts options

The session.clearAuthCache API no longer accepts options for what to clear, and instead unconditionally clears the whole cache.

// Deprecated
session.clearAuthCache({ type: 'password' })
// Replace with
session.clearAuthCache()

API Changed: powerMonitor.querySystemIdleState is now powerMonitor.getSystemIdleState

// Removed in Electron 7.0
powerMonitor.querySystemIdleState(threshold, callback)
// Replace with synchronous API
const idleState = powerMonitor.getSystemIdleState(threshold)

API Changed: powerMonitor.querySystemIdleTime is now powerMonitor.getSystemIdleTime

// Removed in Electron 7.0
powerMonitor.querySystemIdleTime(callback)
// Replace with synchronous API
const idleTime = powerMonitor.getSystemIdleTime()

API Changed: webFrame.setIsolatedWorldInfo replaces separate methods

// Removed in Electron 7.0
webFrame.setIsolatedWorldContentSecurityPolicy(worldId, csp)
webFrame.setIsolatedWorldHumanReadableName(worldId, name)
webFrame.setIsolatedWorldSecurityOrigin(worldId, securityOrigin)
// Replace with
webFrame.setIsolatedWorldInfo(
  worldId,
  {
    securityOrigin: 'some_origin',
    name: 'human_readable_name',
    csp: 'content_security_policy'
  })

Removed: marked property on getBlinkMemoryInfo

This property was removed in Chromium 77, and as such is no longer available.

Behavior Changed: webkitdirectory attribute for <input type="file"/> now lists directory contents

The webkitdirectory property on HTML file inputs allows them to select folders. Previous versions of Electron had an incorrect implementation where the event.target.files of the input returned a FileList that returned one File corresponding to the selected folder.

As of Electron 7, that FileList is now list of all files contained within the folder, similarly to Chrome, Firefox, and Edge (link to MDN docs).

As an illustration, take a folder with this structure:

folder
├── file1
├── file2
└── file3

In Electron <=6, this would return a FileList with a File object for:

path/to/folder

In Electron 7, this now returns a FileList with a File object for:

/path/to/folder/file3
/path/to/folder/file2
/path/to/folder/file1

Note that webkitdirectory no longer exposes the path to the selected folder. If you require the path to the selected folder rather than the folder contents, see the dialog.showOpenDialog API (link).

API Changed: Callback-based versions of promisified APIs

Electron 5 and Electron 6 introduced Promise-based versions of existing asynchronous APIs and deprecated their older, callback-based counterparts. In Electron 7, all deprecated callback-based APIs are now removed.

These functions now only return Promises:

  • app.getFileIcon() #15742
  • app.dock.show() #16904
  • contentTracing.getCategories() #16583
  • contentTracing.getTraceBufferUsage() #16600
  • contentTracing.startRecording() #16584
  • contentTracing.stopRecording() #16584
  • contents.executeJavaScript() #17312
  • cookies.flushStore() #16464
  • cookies.get() #16464
  • cookies.remove() #16464
  • cookies.set() #16464
  • debugger.sendCommand() #16861
  • dialog.showCertificateTrustDialog() #17181
  • inAppPurchase.getProducts() #17355
  • inAppPurchase.purchaseProduct()#17355
  • netLog.stopLogging() #16862
  • session.clearAuthCache() #17259
  • session.clearCache() #17185
  • session.clearHostResolverCache() #17229
  • session.clearStorageData() #17249
  • session.getBlobData() #17303
  • session.getCacheSize() #17185
  • session.resolveProxy() #17222
  • session.setProxy() #17222
  • shell.openExternal() #16176
  • webContents.loadFile() #15855
  • webContents.loadURL() #15855
  • webContents.hasServiceWorker() #16535
  • webContents.printToPDF() #16795
  • webContents.savePage() #16742
  • webFrame.executeJavaScript() #17312
  • webFrame.executeJavaScriptInIsolatedWorld() #17312
  • webviewTag.executeJavaScript() #17312
  • win.capturePage() #15743

These functions now have two forms, synchronous and Promise-based asynchronous:

  • dialog.showMessageBox()/dialog.showMessageBoxSync() #17298
  • dialog.showOpenDialog()/dialog.showOpenDialogSync() #16973
  • dialog.showSaveDialog()/dialog.showSaveDialogSync() #17054

Planned Breaking API Changes (6.0)

API Changed: win.setMenu(null) is now win.removeMenu()

// Deprecated
win.setMenu(null)
// Replace with
win.removeMenu()

API Changed: electron.screen in the renderer process should be accessed via remote

// Deprecated
require('electron').screen
// Replace with
require('electron').remote.screen

API Changed: require()ing node builtins in sandboxed renderers no longer implicitly loads the remote version

// Deprecated
require('child_process')
// Replace with
require('electron').remote.require('child_process')

// Deprecated
require('fs')
// Replace with
require('electron').remote.require('fs')

// Deprecated
require('os')
// Replace with
require('electron').remote.require('os')

// Deprecated
require('path')
// Replace with
require('electron').remote.require('path')

Deprecated: powerMonitor.querySystemIdleState replaced with powerMonitor.getSystemIdleState

// Deprecated
powerMonitor.querySystemIdleState(threshold, callback)
// Replace with synchronous API
const idleState = powerMonitor.getSystemIdleState(threshold)

Deprecated: powerMonitor.querySystemIdleTime replaced with powerMonitor.getSystemIdleTime

// Deprecated
powerMonitor.querySystemIdleTime(callback)
// Replace with synchronous API
const idleTime = powerMonitor.getSystemIdleTime()

Deprecated: app.enableMixedSandbox() is no longer needed

// Deprecated
app.enableMixedSandbox()

Mixed-sandbox mode is now enabled by default.

Deprecated: Tray.setHighlightMode

Under macOS Catalina our former Tray implementation breaks. Apple's native substitute doesn't support changing the highlighting behavior.

// Deprecated
tray.setHighlightMode(mode)
// API will be removed in v7.0 without replacement.

Planned Breaking API Changes (5.0)

Default Changed: nodeIntegration and webviewTag default to false, contextIsolation defaults to true

The following webPreferences option default values are deprecated in favor of the new defaults listed below.

Property Deprecated Default New Default
contextIsolation false true
nodeIntegration true false
webviewTag nodeIntegration if set else true false

E.g. Re-enabling the webviewTag

const w = new BrowserWindow({
  webPreferences: {
    webviewTag: true
  }
})

Behavior Changed: nodeIntegration in child windows opened via nativeWindowOpen

Child windows opened with the nativeWindowOpen option will always have Node.js integration disabled, unless nodeIntegrationInSubFrames is true.

API Changed: Registering privileged schemes must now be done before app ready

Renderer process APIs webFrame.registerURLSchemeAsPrivileged and webFrame.registerURLSchemeAsBypassingCSP as well as browser process API protocol.registerStandardSchemes have been removed. A new API, protocol.registerSchemesAsPrivileged has been added and should be used for registering custom schemes with the required privileges. Custom schemes are required to be registered before app ready.

Deprecated: webFrame.setIsolatedWorld* replaced with webFrame.setIsolatedWorldInfo

// Deprecated
webFrame.setIsolatedWorldContentSecurityPolicy(worldId, csp)
webFrame.setIsolatedWorldHumanReadableName(worldId, name)
webFrame.setIsolatedWorldSecurityOrigin(worldId, securityOrigin)
// Replace with
webFrame.setIsolatedWorldInfo(
  worldId,
  {
    securityOrigin: 'some_origin',
    name: 'human_readable_name',
    csp: 'content_security_policy'
  })

API Changed: webFrame.setSpellCheckProvider now takes an asynchronous callback

The spellCheck callback is now asynchronous, and autoCorrectWord parameter has been removed.

// Deprecated
webFrame.setSpellCheckProvider('en-US', true, {
  spellCheck: (text) => {
    return !spellchecker.isMisspelled(text)
  }
})
// Replace with
webFrame.setSpellCheckProvider('en-US', {
  spellCheck: (words, callback) => {
    callback(words.filter(text => spellchecker.isMisspelled(text)))
  }
})

API Changed: webContents.getZoomLevel and webContents.getZoomFactor are now synchronous

webContents.getZoomLevel and webContents.getZoomFactor no longer take callback parameters, instead directly returning their number values.

// Deprecated
webContents.getZoomLevel((level) => {
  console.log(level)
})
// Replace with
const level = webContents.getZoomLevel()
console.log(level)

// Deprecated
webContents.getZoomFactor((factor) => {
  console.log(factor)
})
// Replace with
const factor = webContents.getZoomFactor()
console.log(factor)

Planned Breaking API Changes (4.0)

The following list includes the breaking API changes made in Electron 4.0.

app.makeSingleInstance

// Deprecated
app.makeSingleInstance((argv, cwd) => {
  /* ... */
})
// Replace with
app.requestSingleInstanceLock()
app.on('second-instance', (event, argv, cwd) => {
  /* ... */
})

app.releaseSingleInstance

// Deprecated
app.releaseSingleInstance()
// Replace with
app.releaseSingleInstanceLock()

app.getGPUInfo

app.getGPUInfo('complete')
// Now behaves the same with `basic` on macOS
app.getGPUInfo('basic')

win_delay_load_hook

When building native modules for windows, the win_delay_load_hook variable in the module's binding.gyp must be true (which is the default). If this hook is not present, then the native module will fail to load on Windows, with an error message like Cannot find module. See the native module guide for more.

Removed: IA32 Linux support

Electron 18 will no longer run on 32-bit Linux systems. See discontinuing support for 32-bit Linux for more information.

Breaking API Changes (3.0)

The following list includes the breaking API changes in Electron 3.0.

app

// Deprecated
app.getAppMemoryInfo()
// Replace with
app.getAppMetrics()

// Deprecated
const metrics = app.getAppMetrics()
const { memory } = metrics[0] // Deprecated property

BrowserWindow

// Deprecated
const optionsA = { webPreferences: { blinkFeatures: '' } }
const windowA = new BrowserWindow(optionsA)
// Replace with
const optionsB = { webPreferences: { enableBlinkFeatures: '' } }
const windowB = new BrowserWindow(optionsB)

// Deprecated
window.on('app-command', (e, cmd) => {
  if (cmd === 'media-play_pause') {
    // do something
  }
})
// Replace with
window.on('app-command', (e, cmd) => {
  if (cmd === 'media-play-pause') {
    // do something
  }
})

clipboard

// Deprecated
clipboard.readRtf()
// Replace with
clipboard.readRTF()

// Deprecated
clipboard.writeRtf()
// Replace with
clipboard.writeRTF()

// Deprecated
clipboard.readHtml()
// Replace with
clipboard.readHTML()

// Deprecated
clipboard.writeHtml()
// Replace with
clipboard.writeHTML()

crashReporter

// Deprecated
crashReporter.start({
  companyName: 'Crashly',
  submitURL: 'https://crash.server.com',
  autoSubmit: true
})
// Replace with
crashReporter.start({
  companyName: 'Crashly',
  submitURL: 'https://crash.server.com',
  uploadToServer: true
})

nativeImage

// Deprecated
nativeImage.createFromBuffer(buffer, 1.0)
// Replace with
nativeImage.createFromBuffer(buffer, {
  scaleFactor: 1.0
})

process

// Deprecated
const info = process.getProcessMemoryInfo()

screen

// Deprecated
screen.getMenuBarHeight()
// Replace with
screen.getPrimaryDisplay().workArea

session

// Deprecated
ses.setCertificateVerifyProc((hostname, certificate, callback) => {
  callback(true)
})
// Replace with
ses.setCertificateVerifyProc((request, callback) => {
  callback(0)
})

Tray

// Deprecated
tray.setHighlightMode(true)
// Replace with
tray.setHighlightMode('on')

// Deprecated
tray.setHighlightMode(false)
// Replace with
tray.setHighlightMode('off')

webContents

// Deprecated
webContents.openDevTools({ detach: true })
// Replace with
webContents.openDevTools({ mode: 'detach' })

// Removed
webContents.setSize(options)
// There is no replacement for this API

webFrame

// Deprecated
webFrame.registerURLSchemeAsSecure('app')
// Replace with
protocol.registerStandardSchemes(['app'], { secure: true })

// Deprecated
webFrame.registerURLSchemeAsPrivileged('app', { secure: true })
// Replace with
protocol.registerStandardSchemes(['app'], { secure: true })

<webview>

// Removed
webview.setAttribute('disableguestresize', '')
// There is no replacement for this API

// Removed
webview.setAttribute('guestinstance', instanceId)
// There is no replacement for this API

// Keyboard listeners no longer work on webview tag
webview.onkeydown = () => { /* handler */ }
webview.onkeyup = () => { /* handler */ }

Node Headers URL

This is the URL specified as disturl in a .npmrc file or as the --dist-url command line flag when building native Node modules.

Deprecated: https://atom.io/download/atom-shell

Replace with: https://atom.io/download/electron

Breaking API Changes (2.0)

The following list includes the breaking API changes made in Electron 2.0.

BrowserWindow

// Deprecated
const optionsA = { titleBarStyle: 'hidden-inset' }
const windowA = new BrowserWindow(optionsA)
// Replace with
const optionsB = { titleBarStyle: 'hiddenInset' }
const windowB = new BrowserWindow(optionsB)

menu

// Removed
menu.popup(browserWindow, 100, 200, 2)
// Replaced with
menu.popup(browserWindow, { x: 100, y: 200, positioningItem: 2 })

nativeImage

// Removed
nativeImage.toPng()
// Replaced with
nativeImage.toPNG()

// Removed
nativeImage.toJpeg()
// Replaced with
nativeImage.toJPEG()

process

  • process.versions.electron and process.version.chrome will be made read-only properties for consistency with the other process.versions properties set by Node.

webContents

// Removed
webContents.setZoomLevelLimits(1, 2)
// Replaced with
webContents.setVisualZoomLevelLimits(1, 2)

webFrame

// Removed
webFrame.setZoomLevelLimits(1, 2)
// Replaced with
webFrame.setVisualZoomLevelLimits(1, 2)

<webview>

// Removed
webview.setZoomLevelLimits(1, 2)
// Replaced with
webview.setVisualZoomLevelLimits(1, 2)

Duplicate ARM Assets

Each Electron release includes two identical ARM builds with slightly different filenames, like electron-v1.7.3-linux-arm.zip and electron-v1.7.3-linux-armv7l.zip. The asset with the v7l prefix was added to clarify to users which ARM version it supports, and to disambiguate it from future armv6l and arm64 assets that may be produced.

The file without the prefix is still being published to avoid breaking any setups that may be consuming it. Starting at 2.0, the unprefixed file will no longer be published.

For details, see 6986 and 7189.