diff --git a/gfx/layers/apz/src/APZCTreeManager.cpp b/gfx/layers/apz/src/APZCTreeManager.cpp
index aabc6a77d9b2..c95b2389df01 100644
--- a/gfx/layers/apz/src/APZCTreeManager.cpp
+++ b/gfx/layers/apz/src/APZCTreeManager.cpp
@@ -53,17 +53,11 @@
 #include "GestureEventListener.h"  // for GestureEventListener::setLongTapEnabled
 #include "UnitTransforms.h"        // for ViewAs
 
-#define ENABLE_APZCTM_LOGGING 0
-// #define ENABLE_APZCTM_LOGGING 1
+static mozilla::LazyLogModule sApzMgrLog("apz.manager");
+#define APZCTM_LOG(...) MOZ_LOG(sApzMgrLog, LogLevel::Debug, (__VA_ARGS__))
 
-#if ENABLE_APZCTM_LOGGING
-#  define APZCTM_LOG(...) printf_stderr("APZCTM: " __VA_ARGS__)
-#else
-#  define APZCTM_LOG(...)
-#endif
-
-// #define APZ_KEY_LOG(...) printf_stderr("APZKEY: " __VA_ARGS__)
-#define APZ_KEY_LOG(...)
+static mozilla::LazyLogModule sApzKeyLog("apz.key");
+#define APZ_KEY_LOG(...) MOZ_LOG(sApzKeyLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
@@ -647,13 +641,10 @@ APZCTreeManager::UpdateHitTestingTreeImpl(const ScrollNode& aRoot,
     state.mNodesToDestroy[i]->Destroy();
   }
 
-#if ENABLE_APZCTM_LOGGING
-  // Make the hit-test tree line up with the layer dump
-  printf_stderr("APZCTreeManager (%p)\n", this);
+  APZCTM_LOG("APZCTreeManager (%p)\n", this);
   if (mRootNode) {
     mRootNode->Dump("  ");
   }
-#endif
   SendSubtreeTransformsToChromeMainThread(nullptr);
 }
 
diff --git a/gfx/layers/apz/src/AndroidAPZ.cpp b/gfx/layers/apz/src/AndroidAPZ.cpp
index c2d3b21b6fa4..0edae785e9af 100644
--- a/gfx/layers/apz/src/AndroidAPZ.cpp
+++ b/gfx/layers/apz/src/AndroidAPZ.cpp
@@ -16,8 +16,8 @@
 #include "ViewConfiguration.h"
 #include "mozilla/StaticPrefs_apz.h"
 
-#define ANDROID_APZ_LOG(...)
-// #define ANDROID_APZ_LOG(...) printf_stderr("ANDROID_APZ: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzAndLog("apz.android");
+#define ANDROID_APZ_LOG(...) MOZ_LOG(sApzAndLog, LogLevel::Debug, (__VA_ARGS__))
 
 static float sMaxFlingSpeed = 0.0f;
 
diff --git a/gfx/layers/apz/src/AsyncPanZoomController.cpp b/gfx/layers/apz/src/AsyncPanZoomController.cpp
index 54bf92e99483..3f3f30baf0a6 100644
--- a/gfx/layers/apz/src/AsyncPanZoomController.cpp
+++ b/gfx/layers/apz/src/AsyncPanZoomController.cpp
@@ -97,22 +97,15 @@
 #  include "mozilla/layers/AndroidDynamicToolbarAnimator.h"
 #endif  // defined(MOZ_WIDGET_ANDROID)
 
-#define ENABLE_APZC_LOGGING 0
-// #define ENABLE_APZC_LOGGING 1
-
-#if ENABLE_APZC_LOGGING
-#  define APZC_LOG(...) printf_stderr("APZC: " __VA_ARGS__)
-#  define APZC_LOG_FM(fm, prefix, ...)                  \
-    {                                                   \
-      std::stringstream ss;                             \
-      ss << nsPrintfCString(prefix, __VA_ARGS__).get(); \
-      AppendToString(ss, fm, ":", "", true);            \
-      APZC_LOG("%s\n", ss.str().c_str());               \
-    }
-#else
-#  define APZC_LOG(...)
-#  define APZC_LOG_FM(fm, prefix, ...)
-#endif
+static mozilla::LazyLogModule sApzCtlLog("apz.controller");
+#define APZC_LOG(...) MOZ_LOG(sApzCtlLog, LogLevel::Debug, (__VA_ARGS__))
+#define APZC_LOG_FM(fm, prefix, ...)                  \
+  if (MOZ_LOG_TEST(sApzCtlLog, LogLevel::Debug)) {    \
+    std::stringstream ss;                             \
+    ss << nsPrintfCString(prefix, __VA_ARGS__).get(); \
+    AppendToString(ss, fm, ":", "", true);            \
+    APZC_LOG("%s\n", ss.str().c_str());               \
+  }
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/Axis.cpp b/gfx/layers/apz/src/Axis.cpp
index 8a5be662be7d..7bfe041a5b0e 100644
--- a/gfx/layers/apz/src/Axis.cpp
+++ b/gfx/layers/apz/src/Axis.cpp
@@ -24,8 +24,8 @@
 #include "nsThreadUtils.h"                  // for NS_DispatchToMainThread, etc
 #include "nscore.h"                         // for NS_IMETHOD
 
-#define AXIS_LOG(...)
-// #define AXIS_LOG(...) printf_stderr("AXIS: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzAxsLog("apz.axis");
+#define AXIS_LOG(...) MOZ_LOG(sApzAxsLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/DesktopFlingPhysics.h b/gfx/layers/apz/src/DesktopFlingPhysics.h
index b7ba4f9a3ea8..e93cc07a2312 100644
--- a/gfx/layers/apz/src/DesktopFlingPhysics.h
+++ b/gfx/layers/apz/src/DesktopFlingPhysics.h
@@ -12,9 +12,6 @@
 #include "mozilla/Assertions.h"
 #include "mozilla/StaticPrefs_apz.h"
 
-#define FLING_PHYS_LOG(...)
-// #define FLING_PHYS_LOG(...) printf_stderr("FLING: " __VA_ARGS__)
-
 namespace mozilla {
 namespace layers {
 
diff --git a/gfx/layers/apz/src/DragTracker.cpp b/gfx/layers/apz/src/DragTracker.cpp
index fb0a435fa9f9..4b995559f0b0 100644
--- a/gfx/layers/apz/src/DragTracker.cpp
+++ b/gfx/layers/apz/src/DragTracker.cpp
@@ -8,8 +8,8 @@
 
 #include "InputData.h"
 
-#define DRAG_LOG(...)
-// #define DRAG_LOG(...) printf_stderr("DRAG: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzDrgLog("apz.drag");
+#define DRAG_LOG(...) MOZ_LOG(sApzDrgLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/FocusState.cpp b/gfx/layers/apz/src/FocusState.cpp
index 5a2fe6cce76a..8ed5cc686b7e 100644
--- a/gfx/layers/apz/src/FocusState.cpp
+++ b/gfx/layers/apz/src/FocusState.cpp
@@ -8,8 +8,8 @@
 
 #include "mozilla/layers/APZThreadUtils.h"
 
-// #define FS_LOG(...) printf_stderr("FS: " __VA_ARGS__)
-#define FS_LOG(...)
+static mozilla::LazyLogModule sApzFstLog("apz.focusstate");
+#define FS_LOG(...) MOZ_LOG(sApzFstLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/FocusTarget.cpp b/gfx/layers/apz/src/FocusTarget.cpp
index 023c7855a068..6e5b9f514d6f 100644
--- a/gfx/layers/apz/src/FocusTarget.cpp
+++ b/gfx/layers/apz/src/FocusTarget.cpp
@@ -15,16 +15,8 @@
 #include "nsIContentInlines.h"  // for nsINode::IsEditable()
 #include "nsLayoutUtils.h"      // for nsLayoutUtils
 
-#define ENABLE_FT_LOGGING 0
-// #define ENABLE_FT_LOGGING 1
-
-#if ENABLE_FT_LOGGING
-#  define FT_LOG(FMT, ...)         \
-    printf_stderr("FT (%s): " FMT, \
-                  XRE_IsParentProcess() ? "chrome" : "content", __VA_ARGS__)
-#else
-#  define FT_LOG(...)
-#endif
+static mozilla::LazyLogModule sApzFtgLog("apz.focustarget");
+#define FT_LOG(...) MOZ_LOG(sApzFtgLog, LogLevel::Debug, (__VA_ARGS__))
 
 using namespace mozilla::dom;
 using namespace mozilla::layout;
diff --git a/gfx/layers/apz/src/GenericFlingAnimation.h b/gfx/layers/apz/src/GenericFlingAnimation.h
index 02e8c34ebe5a..85046abcce39 100644
--- a/gfx/layers/apz/src/GenericFlingAnimation.h
+++ b/gfx/layers/apz/src/GenericFlingAnimation.h
@@ -22,8 +22,8 @@
 #include "mozilla/TimeStamp.h"
 #include "nsThreadUtils.h"
 
-#define FLING_LOG(...)
-// #define FLING_LOG(...) printf_stderr("FLING: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzFlgLog("apz.fling");
+#define FLING_LOG(...) MOZ_LOG(sApzFlgLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/GestureEventListener.cpp b/gfx/layers/apz/src/GestureEventListener.cpp
index f965095508a6..4895929945c9 100644
--- a/gfx/layers/apz/src/GestureEventListener.cpp
+++ b/gfx/layers/apz/src/GestureEventListener.cpp
@@ -16,8 +16,8 @@
 #include "nsDebug.h"      // for NS_WARNING
 #include "nsMathUtils.h"  // for NS_hypot
 
-#define GEL_LOG(...)
-// #define GEL_LOG(...) printf_stderr("GEL: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzGelLog("apz.gesture");
+#define GEL_LOG(...) MOZ_LOG(sApzGelLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/HitTestingTreeNode.cpp b/gfx/layers/apz/src/HitTestingTreeNode.cpp
index fbe39f59b6fe..24a1e7ced7b2 100644
--- a/gfx/layers/apz/src/HitTestingTreeNode.cpp
+++ b/gfx/layers/apz/src/HitTestingTreeNode.cpp
@@ -14,6 +14,8 @@
 #include "nsPrintfCString.h"                  // for nsPrintfCString
 #include "UnitTransforms.h"                   // for ViewAs
 
+static mozilla::LazyLogModule sApzMgrLog("apz.manager");
+
 namespace mozilla {
 namespace layers {
 
@@ -415,21 +417,23 @@ void HitTestingTreeNode::Dump(const char* aPrefix) const {
   if (mPrevSibling) {
     mPrevSibling->Dump(aPrefix);
   }
-  printf_stderr(
-      "%sHitTestingTreeNode (%p) APZC (%p) g=(%s) %s%s%sr=(%s) t=(%s) "
-      "c=(%s)%s%s\n",
-      aPrefix, this, mApzc.get(),
-      mApzc ? Stringify(mApzc->GetGuid()).c_str()
-            : nsPrintfCString("l=0x%" PRIx64, uint64_t(mLayersId)).get(),
-      (mOverride & EventRegionsOverride::ForceDispatchToContent) ? "fdtc " : "",
-      (mOverride & EventRegionsOverride::ForceEmptyHitRegion) ? "fehr " : "",
-      (mFixedPosTarget != ScrollableLayerGuid::NULL_SCROLL_ID)
-          ? nsPrintfCString("fixed=%" PRIu64 " ", mFixedPosTarget).get()
-          : "",
-      Stringify(mEventRegions).c_str(), Stringify(mTransform).c_str(),
-      mClipRegion ? Stringify(mClipRegion.ref()).c_str() : "none",
-      mScrollbarData.mDirection.isSome() ? " scrollbar" : "",
-      IsScrollThumbNode() ? " scrollthumb" : "");
+  MOZ_LOG(
+      sApzMgrLog, LogLevel::Debug,
+      ("%sHitTestingTreeNode (%p) APZC (%p) g=(%s) %s%s%sr=(%s) t=(%s) "
+       "c=(%s)%s%s\n",
+       aPrefix, this, mApzc.get(),
+       mApzc ? Stringify(mApzc->GetGuid()).c_str()
+             : nsPrintfCString("l=0x%" PRIx64, uint64_t(mLayersId)).get(),
+       (mOverride & EventRegionsOverride::ForceDispatchToContent) ? "fdtc "
+                                                                  : "",
+       (mOverride & EventRegionsOverride::ForceEmptyHitRegion) ? "fehr " : "",
+       (mFixedPosTarget != ScrollableLayerGuid::NULL_SCROLL_ID)
+           ? nsPrintfCString("fixed=%" PRIu64 " ", mFixedPosTarget).get()
+           : "",
+       Stringify(mEventRegions).c_str(), Stringify(mTransform).c_str(),
+       mClipRegion ? Stringify(mClipRegion.ref()).c_str() : "none",
+       mScrollbarData.mDirection.isSome() ? " scrollbar" : "",
+       IsScrollThumbNode() ? " scrollthumb" : ""));
   if (mLastChild) {
     mLastChild->Dump(nsPrintfCString("%s  ", aPrefix).get());
   }
diff --git a/gfx/layers/apz/src/InputBlockState.cpp b/gfx/layers/apz/src/InputBlockState.cpp
index fe3e0df7d0ad..318c18fd3bca 100644
--- a/gfx/layers/apz/src/InputBlockState.cpp
+++ b/gfx/layers/apz/src/InputBlockState.cpp
@@ -20,8 +20,8 @@
 #include "OverscrollHandoffState.h"
 #include "QueuedInput.h"
 
-#define TBS_LOG(...)
-// #define TBS_LOG(...) printf_stderr("TBS: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzIbsLog("apz.inputstate");
+#define TBS_LOG(...) MOZ_LOG(sApzIbsLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/InputQueue.cpp b/gfx/layers/apz/src/InputQueue.cpp
index 03267f92213d..dc3de00bf453 100644
--- a/gfx/layers/apz/src/InputQueue.cpp
+++ b/gfx/layers/apz/src/InputQueue.cpp
@@ -16,8 +16,8 @@
 #include "mozilla/StaticPrefs_apz.h"
 #include "mozilla/StaticPrefs_layout.h"
 
-#define INPQ_LOG(...)
-// #define INPQ_LOG(...) printf_stderr("INPQ: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzInpLog("apz.inputqueue");
+#define INPQ_LOG(...) MOZ_LOG(sApzInpLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/src/SimpleVelocityTracker.cpp b/gfx/layers/apz/src/SimpleVelocityTracker.cpp
index af52438c196b..4705d289a62d 100644
--- a/gfx/layers/apz/src/SimpleVelocityTracker.cpp
+++ b/gfx/layers/apz/src/SimpleVelocityTracker.cpp
@@ -10,8 +10,8 @@
 #include "mozilla/StaticPrefs_apz.h"
 #include "mozilla/StaticPtr.h"  // for StaticAutoPtr
 
-#define SVT_LOG(...)
-// #define SVT_LOG(...) printf_stderr("SimpleVelocityTracker: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzSvtLog("apz.simplevelocitytracker");
+#define SVT_LOG(...) MOZ_LOG(sApzSvtLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
diff --git a/gfx/layers/apz/util/APZCCallbackHelper.cpp b/gfx/layers/apz/util/APZCCallbackHelper.cpp
index 2e4573b03465..3d810b8464bb 100644
--- a/gfx/layers/apz/util/APZCCallbackHelper.cpp
+++ b/gfx/layers/apz/util/APZCCallbackHelper.cpp
@@ -34,12 +34,8 @@
 #include "nsView.h"
 #include "Layers.h"
 
-// #define APZCCH_LOGGING 1
-#ifdef APZCCH_LOGGING
-#  define APZCCH_LOG(...) printf_stderr("APZCCH: " __VA_ARGS__)
-#else
-#  define APZCCH_LOG(...)
-#endif
+static mozilla::LazyLogModule sApzHlpLog("apz.helper");
+#define APZCCH_LOG(...) MOZ_LOG(sApzHlpLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {
@@ -700,15 +696,15 @@ static bool PrepareForSetTargetAPZCNotification(
         target ? target : aRootFrame);
   }
 
-#ifdef APZCCH_LOGGING
-  nsAutoString dpElementDesc;
-  if (dpElement) {
-    dpElement->Describe(dpElementDesc);
+  if (MOZ_LOG_TEST(sApzHlpLog, LogLevel::Debug)) {
+    nsAutoString dpElementDesc;
+    if (dpElement) {
+      dpElement->Describe(dpElementDesc);
+    }
+    APZCCH_LOG("For event at %s found scrollable element %p (%s)\n",
+               Stringify(aRefPoint).c_str(), dpElement.get(),
+               NS_LossyConvertUTF16toASCII(dpElementDesc).get());
   }
-  APZCCH_LOG("For event at %s found scrollable element %p (%s)\n",
-             Stringify(aRefPoint).c_str(), dpElement.get(),
-             NS_LossyConvertUTF16toASCII(dpElementDesc).get());
-#endif
 
   bool guidIsValid = APZCCallbackHelper::GetOrCreateScrollIdentifiers(
       dpElement, &(guid.mScrollableLayerGuid.mPresShellId),
diff --git a/gfx/layers/apz/util/APZEventState.cpp b/gfx/layers/apz/util/APZEventState.cpp
index 38e813a4d68b..9d10f0702c33 100644
--- a/gfx/layers/apz/util/APZEventState.cpp
+++ b/gfx/layers/apz/util/APZEventState.cpp
@@ -36,8 +36,8 @@
 #include "nsLayoutUtils.h"
 #include "nsQueryFrame.h"
 
-#define APZES_LOG(...)
-// #define APZES_LOG(...) printf_stderr("APZES: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzEvtLog("apz.eventstate");
+#define APZES_LOG(...) MOZ_LOG(sApzEvtLog, LogLevel::Debug, (__VA_ARGS__))
 
 // Static helper functions
 namespace {
diff --git a/gfx/layers/apz/util/ActiveElementManager.cpp b/gfx/layers/apz/util/ActiveElementManager.cpp
index 61f3c79c7f50..765fbdd2e163 100644
--- a/gfx/layers/apz/util/ActiveElementManager.cpp
+++ b/gfx/layers/apz/util/ActiveElementManager.cpp
@@ -14,8 +14,8 @@
 #include "mozilla/dom/Element.h"
 #include "mozilla/dom/Document.h"
 
-#define AEM_LOG(...)
-// #define AEM_LOG(...) printf_stderr("AEM: " __VA_ARGS__)
+static mozilla::LazyLogModule sApzAemLog("apz.activeelement");
+#define AEM_LOG(...) MOZ_LOG(sApzAemLog, LogLevel::Debug, (__VA_ARGS__))
 
 namespace mozilla {
 namespace layers {