BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +30, -0

Support increases (30)

API

  1. api ➞ CSSStyleProperties Spec link
    Added to Firefox  ➞  2 of 3 engines
  2. api ➞ CSSStyleProperties ➞ cssFloat Spec link
    Added to Firefox  ➞  2 of 3 engines
  3. api ➞ Document ➞ moveBefore
    Added to Firefox  ➞  2 of 3 engines
  4. api ➞ Document ➞ startViewTransition
    Added to Firefox  ➞  3 of 3 engines
  5. api ➞ DocumentFragment ➞ moveBefore
    Added to Firefox  ➞  2 of 3 engines
  6. api ➞ Element ➞ moveBefore
    Added to Firefox  ➞  2 of 3 engines
  7. api ➞ GPUAdapterInfo ➞ isFallbackAdapter Spec link
    Added to Safari  ➞  3 of 3 engines
  8. api ➞ GPUDevice ➞ importExternalTexture ➞ videoframe_source
    Added to Firefox  ➞  3 of 3 engines
  9. api ➞ RTCDataChannel ➞ closing_event
    Added to Firefox  ➞  3 of 3 engines
  10. api ➞ RTCDataChannel ➞ transferable
    Added to Firefox  ➞  3 of 3 engines
  11. api ➞ ViewTransition
    Added to Firefox  ➞  3 of 3 engines
  12. api ➞ ViewTransition ➞ finished
    Added to Firefox  ➞  3 of 3 engines
  13. api ➞ ViewTransition ➞ ready
    Added to Firefox  ➞  3 of 3 engines
  14. api ➞ ViewTransition ➞ skipTransition
    Added to Firefox  ➞  3 of 3 engines
  15. api ➞ ViewTransition ➞ updateCallbackDone
    Added to Firefox  ➞  3 of 3 engines
  16. api ➞ Performance ➞ interactionCount Spec link
    Added to Firefox  ➞  1 of 3 engines
  17. api ➞ SpeechRecognition ➞ phrases Spec link
    Added to Chrome  ➞  1 of 3 engines
  18. api ➞ SpeechRecognitionPhrase ➞ SpeechRecognitionPhrase Spec link
    Added to Chrome  ➞  1 of 3 engines
  19. api ➞ SpeechRecognitionPhrase Spec link
    Added to Chrome  ➞  1 of 3 engines
  20. api ➞ SpeechRecognitionPhrase ➞ boost Spec link
    Added to Chrome  ➞  1 of 3 engines
  21. api ➞ SpeechRecognitionPhrase ➞ phrase Spec link
    Added to Chrome  ➞  1 of 3 engines

CSS

  1. css ➞ properties ➞ view-transition-name ➞ match-element Spec link
    Added to Firefox  ➞  2 of 3 engines

HTTP

  1. http ➞ headers ➞ Permissions-Policy ➞ aria-notify
    Added to Chrome  ➞  1 of 3 engines
  2. http ➞ headers ➞ Permissions-Policy ➞ on-device-speech-recognition Spec link
    Added to Chrome  ➞  1 of 3 engines

JAVASCRIPT

  1. javascript ➞ builtins ➞ Map ➞ getOrInsert Spec link
    Added to Firefox  ➞  1 of 3 engines
  2. javascript ➞ builtins ➞ Map ➞ getOrInsertComputed Spec link
    Added to Firefox  ➞  1 of 3 engines
  3. javascript ➞ builtins ➞ WeakMap ➞ getOrInsert Spec link
    Added to Firefox  ➞  1 of 3 engines
  4. javascript ➞ builtins ➞ WeakMap ➞ getOrInsertComputed Spec link
    Added to Firefox  ➞  1 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ emulation ➞ setScreenOrientationOverride Spec link
    Added to Firefox  ➞  2 of 3 engines
  2. webdriver ➞ bidi ➞ emulation ➞ setLocaleOverride ➞ updates_existing_sandboxes
    Added to Firefox  ➞  1 of 3 engines

BCD Metadata Changes: 106

Show all 106 changes

Note: The following represent changes to BCD metadata keys in the reported time period. Keys are not implementations, and they don't represent commitments toward implementation, etc. A new key occurring is perhaps a signal that some implementer was serious enough to add the key. Many of the features that are 'removed' are usually just 'moved' or 'renamed', but we don't have great ways to highlight that.

Backfilled entries (58)

The entries in this section saw support information change since the report on Friday, 12 September 2025, but all the supported browser versions given were more than a couple of months old. Typically, these are cases of support information being updated long after the support actually landed in a browser, but nobody ever updated the BCD entry.

API

  1. api ➞ GPUQueue ➞ onSubmittedWorkDone
    Backfilled for Firefox  ➞  3 of 3 engines
  2. api ➞ Permissions ➞ permission_screen-wake-lock Spec link
    Backfilled for Safari  ➞  2 of 3 engines
  3. api ➞ SpeechGrammarList ➞ addFromString
    Backfilled for Firefox  ➞  2 of 3 engines
  4. api ➞ SpeechGrammarList ➞ addFromURI
    Backfilled for Firefox  ➞  2 of 3 engines
  5. api ➞ SpeechGrammarList ➞ item
    Backfilled for Firefox  ➞  2 of 3 engines
  6. api ➞ SpeechGrammarList ➞ length
    Backfilled for Firefox  ➞  2 of 3 engines
  7. api ➞ SpeechRecognition ➞ abort
    Backfilled for Firefox  ➞  3 of 3 engines
  8. api ➞ SpeechRecognition ➞ audioend_event
    Backfilled for Firefox  ➞  3 of 3 engines
  9. api ➞ SpeechRecognition ➞ audiostart_event
    Backfilled for Firefox  ➞  3 of 3 engines
  10. api ➞ SpeechRecognition ➞ continuous
    Backfilled for Firefox  ➞  3 of 3 engines
  11. api ➞ SpeechRecognition ➞ end_event
    Backfilled for Firefox  ➞  3 of 3 engines
  12. api ➞ SpeechRecognition ➞ error_event
    Backfilled for Firefox  ➞  3 of 3 engines
  13. api ➞ SpeechRecognition ➞ grammars
    Backfilled for Firefox  ➞  2 of 3 engines
  14. api ➞ SpeechRecognition ➞ interimResults
    Backfilled for Firefox  ➞  3 of 3 engines
  15. api ➞ SpeechRecognition ➞ lang
    Backfilled for Firefox  ➞  3 of 3 engines
  16. api ➞ SpeechRecognition ➞ maxAlternatives
    Backfilled for Firefox  ➞  3 of 3 engines
  17. api ➞ SpeechRecognition ➞ nomatch_event
    Backfilled for Firefox  ➞  3 of 3 engines
  18. api ➞ SpeechRecognition ➞ result_event
    Backfilled for Firefox  ➞  3 of 3 engines
  19. api ➞ SpeechRecognition ➞ soundend_event
    Backfilled for Firefox  ➞  3 of 3 engines
  20. api ➞ SpeechRecognition ➞ soundstart_event
    Backfilled for Firefox  ➞  3 of 3 engines
  21. api ➞ SpeechRecognition ➞ speechend_event
    Backfilled for Firefox  ➞  3 of 3 engines
  22. api ➞ SpeechRecognition ➞ speechstart_event
    Backfilled for Firefox  ➞  3 of 3 engines
  23. api ➞ SpeechRecognition ➞ start
    Backfilled for Firefox  ➞  3 of 3 engines
  24. api ➞ SpeechRecognition ➞ start_event
    Backfilled for Firefox  ➞  3 of 3 engines
  25. api ➞ SpeechRecognition ➞ stop
    Backfilled for Firefox  ➞  3 of 3 engines
  26. api ➞ FederatedCredential ➞ iconURL Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  27. api ➞ FederatedCredential ➞ name Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  28. api ➞ HTMLScriptElement ➞ innerText Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  29. api ➞ HTMLScriptElement ➞ innerText ➞ enforces_trusted_types Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  30. api ➞ HTMLScriptElement ➞ textContent Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  31. api ➞ HTMLScriptElement ➞ textContent ➞ enforces_trusted_types Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  32. api ➞ IDBDatabase ➞ abort_event
    Backfilled for Firefox  ➞  3 of 3 engines
  33. api ➞ Notification ➞ navigate Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  34. api ➞ SVGAnimatedString ➞ baseVal ➞ enforces_trusted_types
    Backfilled for Firefox  ➞  2 of 3 engines
  35. api ➞ ServiceWorkerContainer ➞ register ➞ enforces_trusted_types
    Backfilled for Firefox  ➞  3 of 3 engines
  36. api ➞ SpeechRecognition ➞ start ➞ audioTrack Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  37. api ➞ WorkerGlobalScope ➞ importScripts ➞ enforces_trusted_types Spec link
    Backfilled for Firefox  ➞  3 of 3 engines

CSS

  1. css ➞ selectors ➞ after ➞ nested_marker Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  2. css ➞ selectors ➞ before ➞ nested_marker Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  3. css ➞ properties ➞ caret-shape
    Backfilled for Chrome  ➞  1 of 3 engines
  4. css ➞ properties ➞ caret-shape ➞ auto Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  5. css ➞ properties ➞ caret-shape ➞ bar Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  6. css ➞ properties ➞ caret-shape ➞ block Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  7. css ➞ properties ➞ caret-shape ➞ underscore Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  8. css ➞ properties ➞ corner-shape ➞ bevel Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  9. css ➞ properties ➞ corner-shape ➞ notch Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  10. css ➞ properties ➞ corner-shape ➞ round Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  11. css ➞ properties ➞ corner-shape ➞ scoop Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  12. css ➞ properties ➞ corner-shape ➞ square Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  13. css ➞ properties ➞ corner-shape ➞ squircle Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  14. css ➞ properties ➞ transition-behavior ➞ transitionable_content-visibility Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  15. css ➞ properties ➞ transition-behavior ➞ transitionable_display Spec link
    Backfilled for Chrome  ➞  2 of 3 engines

HTTP

  1. http ➞ headers ➞ Content-Security-Policy ➞ require-trusted-types-for
    Backfilled for Firefox  ➞  3 of 3 engines
  2. http ➞ headers ➞ Content-Security-Policy ➞ trusted-types
    Backfilled for Firefox  ➞  3 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ emulation ➞ setLocaleOverride ➞ cross_origin_iframes
    Backfilled for Firefox  ➞  1 of 3 engines
  2. webdriver ➞ bidi ➞ network ➞ addDataCollector ➞ dataTypes_parameter ➞ response Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  3. webdriver ➞ bidi ➞ network ➞ disownData ➞ dataType_parameter ➞ response Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  4. webdriver ➞ bidi ➞ network ➞ getData ➞ dataType_parameter ➞ response Spec link
    Backfilled for Firefox  ➞  1 of 3 engines

New entries (42)

The entries in this section were not found in BCD on Friday, 12 September 2025, but are now present. These usually do not have any support information attached to them, and often have no corresponding MDN page. Sometimes, entries that appear here also appear in the next section (“Removed BCD entries”) because of a Working Group deciding on a rename.

API

  1. api ➞ FederatedCredential ➞ iconURL
  2. api ➞ FederatedCredential ➞ name
  3. api ➞ HTMLScriptElement ➞ innerText
  4. api ➞ HTMLScriptElement ➞ innerText ➞ enforces_trusted_types
  5. api ➞ HTMLScriptElement ➞ textContent
  6. api ➞ HTMLScriptElement ➞ textContent ➞ enforces_trusted_types
  7. api ➞ IDBDatabase ➞ abort_event
  8. api ➞ Notification ➞ navigate
  9. api ➞ Performance ➞ interactionCount
  10. api ➞ SVGAnimatedString ➞ baseVal ➞ enforces_trusted_types
  11. api ➞ ServiceWorkerContainer ➞ register ➞ enforces_trusted_types
  12. api ➞ SpeechRecognition ➞ phrases
  13. api ➞ SpeechRecognition ➞ start ➞ audioTrack
  14. api ➞ SpeechRecognitionPhrase ➞ SpeechRecognitionPhrase
  15. api ➞ SpeechRecognitionPhrase
  16. api ➞ SpeechRecognitionPhrase ➞ boost
  17. api ➞ SpeechRecognitionPhrase ➞ phrase
  18. api ➞ WorkerGlobalScope ➞ importScripts ➞ enforces_trusted_types

CSS

  1. css ➞ properties ➞ caret-shape
  2. css ➞ properties ➞ caret-shape ➞ auto
  3. css ➞ properties ➞ caret-shape ➞ bar
  4. css ➞ properties ➞ caret-shape ➞ block
  5. css ➞ properties ➞ caret-shape ➞ underscore
  6. css ➞ properties ➞ corner-shape ➞ bevel
  7. css ➞ properties ➞ corner-shape ➞ notch
  8. css ➞ properties ➞ corner-shape ➞ round
  9. css ➞ properties ➞ corner-shape ➞ scoop
  10. css ➞ properties ➞ corner-shape ➞ square
  11. css ➞ properties ➞ corner-shape ➞ squircle
  12. css ➞ properties ➞ transition-behavior ➞ transitionable_content-visibility
  13. css ➞ properties ➞ transition-behavior ➞ transitionable_display

HTTP

  1. http ➞ headers ➞ Permissions-Policy ➞ aria-notify
  2. http ➞ headers ➞ Permissions-Policy ➞ on-device-speech-recognition

JAVASCRIPT

  1. javascript ➞ builtins ➞ Map ➞ getOrInsert
  2. javascript ➞ builtins ➞ Map ➞ getOrInsertComputed
  3. javascript ➞ builtins ➞ WeakMap ➞ getOrInsert
  4. javascript ➞ builtins ➞ WeakMap ➞ getOrInsertComputed

WEBDRIVER

  1. webdriver ➞ bidi ➞ emulation ➞ setLocaleOverride ➞ cross_origin_iframes
  2. webdriver ➞ bidi ➞ emulation ➞ setLocaleOverride ➞ updates_existing_sandboxes
  3. webdriver ➞ bidi ➞ network ➞ addDataCollector ➞ dataTypes_parameter ➞ response
  4. webdriver ➞ bidi ➞ network ➞ disownData ➞ dataType_parameter ➞ response
  5. webdriver ➞ bidi ➞ network ➞ getData ➞ dataType_parameter ➞ response

Removed entries (6)

The entries in this section were found in BCD on Friday, 12 September 2025, but are no longer present. The reasons for this removal can be anything from an experimental proposal that was never supported to a property or value being renamed to something else.

API

  1. api ➞ Fence ➞ setReportEventDataForAutomaticBeacons ➞ start_commit_eventType
  2. api ➞ HTMLElement ➞ innerText ➞ enforces_trusted_types
  3. api ➞ Node ➞ textContent ➞ enforces_trusted_types
  4. api ➞ Permissions ➞ permission_compute-pressure
  5. api ➞ SpeechRecognitionEvent ➞ emma
  6. api ➞ SpeechRecognitionEvent ➞ interpretation