diff --git a/atom/common/native_mate_converters/blink_converter.cc b/atom/common/native_mate_converters/blink_converter.cc
index 7f6e67f683..16e26da9cf 100644
--- a/atom/common/native_mate_converters/blink_converter.cc
+++ b/atom/common/native_mate_converters/blink_converter.cc
@@ -445,9 +445,6 @@ v8::Local<v8::Value> Converter<blink::WebCache::ResourceTypeStat>::ToV8(
   dict.Set("count", static_cast<uint32_t>(stat.count));
   dict.Set("size", static_cast<double>(stat.size));
   dict.Set("liveSize", static_cast<double>(stat.liveSize));
-  dict.Set("decodedSize", static_cast<double>(stat.decodedSize));
-  dict.Set("purgedSize", static_cast<double>(stat.purgedSize));
-  dict.Set("purgeableSize", static_cast<double>(stat.purgeableSize));
   return dict.GetHandle();
 }
 
diff --git a/docs-translations/ko-KR/api/structures/memory-usage-details.md b/docs-translations/ko-KR/api/structures/memory-usage-details.md
index 228a445290..d77e07dedf 100644
--- a/docs-translations/ko-KR/api/structures/memory-usage-details.md
+++ b/docs-translations/ko-KR/api/structures/memory-usage-details.md
@@ -3,6 +3,3 @@
 * `count` Number
 * `size` Number
 * `liveSize` Number
-* `decodedSize` Number
-* `purgedSize` Number
-* `purgeableSize` Number
diff --git a/docs-translations/ko-KR/api/web-frame.md b/docs-translations/ko-KR/api/web-frame.md
index 64b78eb134..e901aa5e12 100644
--- a/docs-translations/ko-KR/api/web-frame.md
+++ b/docs-translations/ko-KR/api/web-frame.md
@@ -144,10 +144,7 @@ console.log(webFrame.getResourceUsage())
   images: {
     count: 22,
     size: 2549,
-    liveSize: 2542,
-    decodedSize: 478,
-    purgedSize: 0,
-    purgeableSize: 0
+    liveSize: 2542
   },
   cssStyleSheets: { /* same with "images" */ },
   xslStyleSheets: { /* same with "images" */ },
diff --git a/docs-translations/zh-TW/api/structures/memory-usage-details.md b/docs-translations/zh-TW/api/structures/memory-usage-details.md
index b19eb41329..e0deb5a265 100644
--- a/docs-translations/zh-TW/api/structures/memory-usage-details.md
+++ b/docs-translations/zh-TW/api/structures/memory-usage-details.md
@@ -3,6 +3,3 @@
 * `count` 數字
 * `size` 數字
 * `liveSize` 數字
-* `decodedSize` 數字
-* `purgedSize` 數字
-* `purgeableSize` 數字
diff --git a/docs/api/structures/memory-usage-details.md b/docs/api/structures/memory-usage-details.md
index 228a445290..d77e07dedf 100644
--- a/docs/api/structures/memory-usage-details.md
+++ b/docs/api/structures/memory-usage-details.md
@@ -3,6 +3,3 @@
 * `count` Number
 * `size` Number
 * `liveSize` Number
-* `decodedSize` Number
-* `purgedSize` Number
-* `purgeableSize` Number
diff --git a/docs/api/web-frame.md b/docs/api/web-frame.md
index a8a430c7c5..25ae3480f9 100644
--- a/docs/api/web-frame.md
+++ b/docs/api/web-frame.md
@@ -167,10 +167,7 @@ This will generate:
   images: {
     count: 22,
     size: 2549,
-    liveSize: 2542,
-    decodedSize: 478,
-    purgedSize: 0,
-    purgeableSize: 0
+    liveSize: 2542
   },
   cssStyleSheets: { /* same with "images" */ },
   xslStyleSheets: { /* same with "images" */ },