BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +6, -0

Support increases (6)

WEBDRIVER

  1. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event Spec link
    Added to Firefox  ➞  2 of 3 engines
  2. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event ➞ context_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  3. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event ➞ navigation_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  4. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event ➞ suggestedFilename_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  5. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event ➞ timestamp_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  6. webdriver ➞ bidi ➞ browsingContext ➞ downloadWillBegin_event ➞ url_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines

BCD Metadata Changes: 35

Show all 35 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 (19)

The entries in this section saw support information change since the report on Friday, 22 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 ➞ HTMLButtonElement ➞ command ➞ request-close Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  2. api ➞ Document ➞ adoptedStyleSheets ➞ mutable Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  3. api ➞ GPUSupportedFeatures ➞ feature_core-features-and-limits Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  4. api ➞ ImageData ➞ ImageData ➞ settings_parameter ➞ pixelFormat_option Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  5. api ➞ RTCEncodedAudioFrame ➞ getMetadata ➞ return_object_property_audioLevel Spec link
    Backfilled for Chrome  ➞  1 of 3 engines

CSS

  1. css ➞ properties ➞ text-autospace Spec link
    Backfilled for Firefox  ➞  3 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ browser ➞ removeUserContext ➞ userContext_parameter Spec link
    Backfilled for Chrome  ➞  2 of 3 engines
  2. webdriver ➞ bidi ➞ browser ➞ setClientWindowState Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  3. webdriver ➞ bidi ➞ browser ➞ setClientWindowState ➞ clientWindow_parameter Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  4. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ alert Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  5. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ beforeunload Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  6. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ confirm Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  7. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ prompt Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  8. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ alert Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  9. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ beforeunload Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  10. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ confirm Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  11. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ prompt Spec link
    Backfilled for Firefox  ➞  1 of 3 engines
  12. webdriver ➞ bidi ➞ session ➞ new ➞ capabilities_parameter ➞ capability_matching Spec link
    Backfilled for Firefox  ➞  2 of 3 engines

HTML

  1. html ➞ elements ➞ button ➞ command ➞ request-close Spec link
    Backfilled for Firefox  ➞  3 of 3 engines

New entries (16)

The entries in this section were not found in BCD on Friday, 22 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 ➞ Document ➞ adoptedStyleSheets ➞ mutable
  2. api ➞ GPUSupportedFeatures ➞ feature_core-features-and-limits
  3. api ➞ ImageData ➞ ImageData ➞ settings_parameter ➞ pixelFormat_option
  4. api ➞ RTCEncodedAudioFrame ➞ getMetadata ➞ return_object_property_audioLevel

HTML

  1. html ➞ elements ➞ button ➞ command ➞ request-close

WEBDRIVER

  1. webdriver ➞ bidi ➞ browser ➞ setClientWindowState
  2. webdriver ➞ bidi ➞ browser ➞ setClientWindowState ➞ clientWindow_parameter
  3. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ alert
  4. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ beforeunload
  5. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ confirm
  6. webdriver ➞ bidi ➞ browsingContext ➞ userPromptClosed_event ➞ type_parameter ➞ prompt
  7. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ alert
  8. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ beforeunload
  9. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ confirm
  10. webdriver ➞ bidi ➞ browsingContext ➞ userPromptOpened_event ➞ type_parameter ➞ prompt
  11. webdriver ➞ bidi ➞ session ➞ new ➞ capabilities_parameter ➞ capability_matching

Removed entries (0)

No features were removed from bcd in this time period