BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +28, -0

Support increases (28)

API

  1. api ➞ DigitalCredential Spec link
    Added to Chrome  ➞  2 of 3 engines
  2. api ➞ DigitalCredential ➞ data Spec link
    Added to Chrome  ➞  2 of 3 engines
  3. api ➞ DigitalCredential ➞ protocol Spec link
    Added to Chrome  ➞  2 of 3 engines
  4. api ➞ DigitalCredential ➞ toJSON Spec link
    Added to Chrome  ➞  2 of 3 engines
  5. api ➞ DigitalCredential ➞ userAgentAllowsProtocol_static Spec link
    Added to Chrome  ➞  2 of 3 engines
  6. api ➞ RTCRtpReceiver ➞ transform
    Added to Chrome  ➞  3 of 3 engines
  7. api ➞ RTCRtpScriptTransform ➞ RTCRtpScriptTransform
    Added to Chrome  ➞  3 of 3 engines
  8. api ➞ RTCRtpScriptTransformer
    Added to Chrome  ➞  3 of 3 engines
  9. api ➞ RTCRtpScriptTransformer ➞ options
    Added to Chrome  ➞  3 of 3 engines
  10. api ➞ RTCRtpScriptTransformer ➞ readable
    Added to Chrome  ➞  3 of 3 engines
  11. api ➞ RTCRtpScriptTransformer ➞ sendKeyFrameRequest
    Added to Chrome  ➞  3 of 3 engines
  12. api ➞ RTCRtpScriptTransformer ➞ writable
    Added to Chrome  ➞  3 of 3 engines
  13. api ➞ RTCRtpSender ➞ transform
    Added to Chrome  ➞  3 of 3 engines
  14. api ➞ RTCTransformEvent
    Added to Chrome  ➞  3 of 3 engines
  15. api ➞ RTCTransformEvent ➞ transformer
    Added to Chrome  ➞  3 of 3 engines
  16. api ➞ IDBIndex ➞ getAllRecords Spec link
    Added to Chrome  ➞  1 of 3 engines
  17. api ➞ IDBObjectStore ➞ getAllRecords Spec link
    Added to Chrome  ➞  1 of 3 engines
  18. api ➞ IDBRecord Spec link
    Added to Chrome  ➞  1 of 3 engines
  19. api ➞ IDBRecord ➞ key Spec link
    Added to Chrome  ➞  1 of 3 engines
  20. api ➞ IDBRecord ➞ primaryKey Spec link
    Added to Chrome  ➞  1 of 3 engines
  21. api ➞ IDBRecord ➞ value Spec link
    Added to Chrome  ➞  1 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ emulation ➞ setTimezoneOverride Spec link
    Added to Firefox  ➞  2 of 3 engines
  2. webdriver ➞ bidi ➞ emulation ➞ setTimezoneOverride ➞ contexts_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  3. webdriver ➞ bidi ➞ emulation ➞ setTimezoneOverride ➞ timezone_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  4. webdriver ➞ bidi ➞ emulation ➞ setTimezoneOverride ➞ userContexts_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines

WEBEXTENSIONS

  1. webextensions ➞ manifest ➞ content_scripts ➞ css_origin
    Added to Firefox  ➞  2 of 3 engines
  2. webextensions ➞ api ➞ contentScripts ➞ register ➞ cssOrigin
    Added to Firefox  ➞  1 of 3 engines
  3. webextensions ➞ api ➞ scripting ➞ RegisteredContentScript ➞ cssOrigin
    Added to Firefox  ➞  2 of 3 engines

BCD Metadata Changes: 36

Show all 36 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 (15)

The entries in this section saw support information change since the report on Friday, 29 August 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 ➞ LargestContentfulPaint ➞ renderTime ➞ cross-origin
    Backfilled for Firefox  ➞  2 of 3 engines
  2. api ➞ GPUSupportedFeatures ➞ feature_texture-compression-astc-sliced-3d Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  3. api ➞ GPUSupportedFeatures ➞ feature_texture-compression-bc-sliced-3d Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  4. api ➞ IdentityCredentialError ➞ error
    Backfilled for Chrome  ➞  1 of 3 engines

HTML

  1. html ➞ elements ➞ template ➞ shadowrootclonable
    Backfilled for Safari  ➞  3 of 3 engines
  2. html ➞ elements ➞ template ➞ shadowrootdelegatesfocus
    Backfilled for Safari  ➞  3 of 3 engines
  3. html ➞ elements ➞ template ➞ shadowrootserializable
    Backfilled for Safari  ➞  2 of 3 engines

CSS

  1. css ➞ selectors ➞ nesting ➞ at-scope
    Backfilled for Firefox  ➞  1 of 3 engines

HTTP

  1. http ➞ headers ➞ Set-Cookie ➞ host_secure_prefixes
    Backfilled for Firefox  ➞  3 of 3 engines
  2. http ➞ headers ➞ Set-Cookie ➞ http_host-http_prefixes
    Backfilled for Chrome  ➞  1 of 3 engines

WEBEXTENSIONS

  1. webextensions ➞ api ➞ browserSettings ➞ verticalTabs
    Backfilled for Firefox  ➞  1 of 3 engines
  2. webextensions ➞ api ➞ tabs ➞ onUpdated ➞ filter ➞ cookieStoreId
    Backfilled for Firefox  ➞  1 of 3 engines
  3. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ clear
    Backfilled for Firefox  ➞  2 of 3 engines
  4. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ get
    Backfilled for Firefox  ➞  2 of 3 engines
  5. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ set
    Backfilled for Firefox  ➞  2 of 3 engines

New entries (19)

The entries in this section were not found in BCD on Friday, 29 August 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 ➞ GPUSupportedFeatures ➞ feature_texture-compression-astc-sliced-3d
  2. api ➞ GPUSupportedFeatures ➞ feature_texture-compression-bc-sliced-3d
  3. api ➞ IDBIndex ➞ getAllRecords
  4. api ➞ IDBObjectStore ➞ getAllRecords
  5. api ➞ IDBRecord
  6. api ➞ IDBRecord ➞ key
  7. api ➞ IDBRecord ➞ primaryKey
  8. api ➞ IDBRecord ➞ value
  9. api ➞ IdentityCredentialError ➞ error

CSS

  1. css ➞ selectors ➞ nesting ➞ at-scope

HTTP

  1. http ➞ headers ➞ Set-Cookie ➞ host_secure_prefixes
  2. http ➞ headers ➞ Set-Cookie ➞ http_host-http_prefixes

WEBEXTENSIONS

  1. webextensions ➞ api ➞ browserSettings ➞ verticalTabs
  2. webextensions ➞ api ➞ contentScripts ➞ register ➞ cssOrigin
  3. webextensions ➞ api ➞ scripting ➞ RegisteredContentScript ➞ cssOrigin
  4. webextensions ➞ api ➞ tabs ➞ onUpdated ➞ filter ➞ cookieStoreId
  5. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ clear
  6. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ get
  7. webextensions ➞ api ➞ types ➞ BrowserSetting ➞ set

Removed entries (2)

The entries in this section were found in BCD on Friday, 29 August 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 ➞ CredentialsContainer ➞ get ➞ identity_option ➞ error_api

HTTP

  1. http ➞ headers ➞ Set-Cookie ➞ cookie_prefixes