BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +36, -0

Support increases (36)

CSS

  1. css ➞ properties ➞ text-box
    Added to Firefox  ➞  3 of 3 engines
  2. css ➞ properties ➞ text-box ➞ auto Spec link
    Added to Firefox  ➞  3 of 3 engines
  3. css ➞ properties ➞ text-box ➞ cap Spec link
    Added to Firefox  ➞  2 of 3 engines
  4. css ➞ properties ➞ text-box ➞ ex Spec link
    Added to Firefox  ➞  2 of 3 engines
  5. css ➞ properties ➞ text-box ➞ none Spec link
    Added to Firefox  ➞  3 of 3 engines
  6. css ➞ properties ➞ text-box ➞ normal Spec link
    Added to Firefox  ➞  3 of 3 engines
  7. css ➞ properties ➞ text-box ➞ text Spec link
    Added to Firefox  ➞  3 of 3 engines
  8. css ➞ properties ➞ text-box ➞ trim-both Spec link
    Added to Firefox  ➞  3 of 3 engines
  9. css ➞ properties ➞ text-box ➞ trim-end Spec link
    Added to Firefox  ➞  3 of 3 engines
  10. css ➞ properties ➞ text-box ➞ trim-start Spec link
    Added to Firefox  ➞  3 of 3 engines
  11. css ➞ properties ➞ text-box-edge
    Added to Firefox  ➞  3 of 3 engines
  12. css ➞ properties ➞ text-box-edge ➞ auto Spec link
    Added to Firefox  ➞  3 of 3 engines
  13. css ➞ properties ➞ text-box-edge ➞ cap Spec link
    Added to Firefox  ➞  2 of 3 engines
  14. css ➞ properties ➞ text-box-edge ➞ ex Spec link
    Added to Firefox  ➞  2 of 3 engines
  15. css ➞ properties ➞ text-box-edge ➞ ideographic Spec link
    Added to Firefox  ➞  2 of 3 engines
  16. css ➞ properties ➞ text-box-edge ➞ ideographic-ink Spec link
    Added to Firefox  ➞  2 of 3 engines
  17. css ➞ properties ➞ text-box-edge ➞ text Spec link
    Added to Firefox  ➞  3 of 3 engines
  18. css ➞ properties ➞ text-box-trim
    Added to Firefox  ➞  3 of 3 engines
  19. css ➞ properties ➞ text-box-trim ➞ none Spec link
    Added to Firefox  ➞  3 of 3 engines
  20. css ➞ properties ➞ text-box-trim ➞ trim-both Spec link
    Added to Firefox  ➞  3 of 3 engines
  21. css ➞ properties ➞ text-box-trim ➞ trim-end Spec link
    Added to Firefox  ➞  3 of 3 engines
  22. css ➞ properties ➞ text-box-trim ➞ trim-start Spec link
    Added to Firefox  ➞  3 of 3 engines
  23. css ➞ selectors ➞ buffering
    Added to Firefox  ➞  2 of 3 engines
  24. css ➞ selectors ➞ muted
    Added to Firefox  ➞  2 of 3 engines
  25. css ➞ selectors ➞ paused
    Added to Firefox  ➞  2 of 3 engines
  26. css ➞ selectors ➞ playing
    Added to Firefox  ➞  2 of 3 engines
  27. css ➞ selectors ➞ seeking
    Added to Firefox  ➞  2 of 3 engines
  28. css ➞ selectors ➞ stalled
    Added to Firefox  ➞  2 of 3 engines
  29. css ➞ selectors ➞ volume-locked
    Added to Firefox  ➞  2 of 3 engines
  30. css ➞ types ➞ text-edge
    Added to Firefox  ➞  3 of 3 engines
  31. css ➞ types ➞ text-edge ➞ alphabetic Spec link
    Added to Firefox  ➞  3 of 3 engines
  32. css ➞ types ➞ text-edge ➞ cap Spec link
    Added to Firefox  ➞  3 of 3 engines
  33. css ➞ types ➞ text-edge ➞ ex Spec link
    Added to Firefox  ➞  3 of 3 engines
  34. css ➞ types ➞ text-edge ➞ text Spec link
    Added to Firefox  ➞  3 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ browser ➞ setDownloadBehavior ➞ downloadBehavior_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines
  2. webdriver ➞ bidi ➞ browser ➞ setDownloadBehavior ➞ userContexts_parameter Spec link
    Added to Firefox  ➞  2 of 3 engines

BCD Metadata Changes: 16

Show all 16 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 (10)

The entries in this section saw support information change since the report on Friday, 13 March 2026, 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.

CSS

  1. css ➞ at-rules ➞ container ➞ style_queries_for_custom_properties Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  2. css ➞ properties ➞ align-self ➞ position_absolute_context Spec link
    Backfilled for Safari  ➞  3 of 3 engines
  3. css ➞ properties ➞ justify-self ➞ position_absolute_context Spec link
    Backfilled for Safari  ➞  3 of 3 engines
  4. css ➞ properties ➞ place-self ➞ position_absolute_context Spec link
    Backfilled for Safari  ➞  3 of 3 engines
  5. css ➞ properties ➞ anchor-name ➞ position_after_layout Spec link
    Backfilled for Chrome  ➞  1 of 3 engines
  6. css ➞ properties ➞ letter-spacing ➞ percentages Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  7. css ➞ properties ➞ position-area ➞ disables_auto_margins_and_insets Spec link
    Backfilled for Firefox  ➞  2 of 3 engines

API

  1. api ➞ HTMLMediaElement ➞ playbackRate ➞ negative_values Spec link
    Backfilled for Safari  ➞  1 of 3 engines
  2. api ➞ VideoFrame ➞ VideoFrame ➞ metadata_option Spec link
    Backfilled for Chrome  ➞  1 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ network ➞ disownData ➞ dataType_parameter ➞ request
    Backfilled for Firefox  ➞  1 of 3 engines

New entries (6)

The entries in this section were not found in BCD on Friday, 13 March 2026, 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 ➞ HTMLMediaElement ➞ playbackRate ➞ negative_values
  2. api ➞ VideoFrame ➞ VideoFrame ➞ metadata_option

CSS

  1. css ➞ properties ➞ anchor-name ➞ position_after_layout
  2. css ➞ properties ➞ letter-spacing ➞ percentages
  3. css ➞ properties ➞ position-area ➞ disables_auto_margins_and_insets

WEBDRIVER

  1. webdriver ➞ bidi ➞ network ➞ disownData ➞ dataType_parameter ➞ request

Removed entries (0)

No features were removed from bcd in this time period