BCD Watch

BCD Changes Report

Summary of BCD changes from through 🔗

Browser Support Changes: +5, -0

Support increases (5)

CSS

  1. css ➞ properties ➞ font-family ➞ math
    Added to Firefox  ➞  2 of 3 engines
  2. css ➞ properties ➞ height ➞ stretch Spec link
    Added to Firefox  ➞  2 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ network ➞ getData ➞ cached_responses
    Added to Chrome  ➞  1 of 3 engines
  2. webdriver ➞ bidi ➞ network ➞ getData ➞ dataType_parameter ➞ request
    Added to Chrome  ➞  1 of 3 engines
  3. webdriver ➞ bidi ➞ network ➞ getData ➞ data_url
    Added to Firefox  ➞  2 of 3 engines

BCD Metadata Changes: 149

Show all 149 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 (127)

The entries in this section saw support information change since the report on Friday, 17 October 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 ➞ popoverTargetElement ➞ implicit_anchor_reference
    Backfilled for Firefox  ➞  2 of 3 engines
  2. api ➞ HTMLElement ➞ togglePopover ➞ options_source_parameter ➞ implicit_anchor_reference Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  3. api ➞ HTMLInputElement ➞ popoverTargetElement ➞ implicit_anchor_reference
    Backfilled for Firefox  ➞  2 of 3 engines
  4. api ➞ GPUDevice ➞ createBindGroup ➞ descriptor_entries_resource_parameter_accepts_GPUBuffer
    Backfilled for Chrome  ➞  1 of 3 engines
  5. api ➞ GPUDevice ➞ createBindGroup ➞ descriptor_entries_resource_parameter_accepts_GPUTextureView
    Backfilled for Chrome  ➞  1 of 3 engines

CSS

  1. css ➞ at-rules ➞ position-try
    Backfilled for Firefox  ➞  3 of 3 engines
  2. css ➞ properties ➞ anchor-name
    Backfilled for Firefox  ➞  3 of 3 engines
  3. css ➞ properties ➞ anchor-name ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  4. css ➞ properties ➞ anchor-scope Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  5. css ➞ properties ➞ anchor-scope ➞ all Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  6. css ➞ properties ➞ anchor-scope ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  7. css ➞ properties ➞ block-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  8. css ➞ properties ➞ bottom ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  9. css ➞ properties ➞ bottom ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  10. css ➞ properties ➞ height ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  11. css ➞ properties ➞ inline-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  12. css ➞ properties ➞ inset ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  13. css ➞ properties ➞ inset ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  14. css ➞ properties ➞ inset-block ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  15. css ➞ properties ➞ inset-block ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  16. css ➞ properties ➞ inset-block-end ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  17. css ➞ properties ➞ inset-block-end ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  18. css ➞ properties ➞ inset-block-start ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  19. css ➞ properties ➞ inset-block-start ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  20. css ➞ properties ➞ inset-inline ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  21. css ➞ properties ➞ inset-inline ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  22. css ➞ properties ➞ inset-inline-end ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  23. css ➞ properties ➞ inset-inline-end ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  24. css ➞ properties ➞ inset-inline-start ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  25. css ➞ properties ➞ inset-inline-start ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  26. css ➞ properties ➞ left ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  27. css ➞ properties ➞ left ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  28. css ➞ properties ➞ margin ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  29. css ➞ properties ➞ margin-block ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  30. css ➞ properties ➞ margin-block-end ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  31. css ➞ properties ➞ margin-block-start ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  32. css ➞ properties ➞ margin-bottom ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  33. css ➞ properties ➞ margin-inline ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  34. css ➞ properties ➞ margin-inline-end ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  35. css ➞ properties ➞ margin-inline-start ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  36. css ➞ properties ➞ margin-left ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  37. css ➞ properties ➞ margin-right ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  38. css ➞ properties ➞ margin-top ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  39. css ➞ properties ➞ max-block-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  40. css ➞ properties ➞ max-height ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  41. css ➞ properties ➞ max-inline-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  42. css ➞ properties ➞ max-width ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  43. css ➞ properties ➞ min-block-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  44. css ➞ properties ➞ min-height ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  45. css ➞ properties ➞ min-inline-size ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  46. css ➞ properties ➞ min-width ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  47. css ➞ properties ➞ place-items ➞ anchor-center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  48. css ➞ properties ➞ place-self ➞ anchor-center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  49. css ➞ properties ➞ position-anchor
    Backfilled for Firefox  ➞  3 of 3 engines
  50. css ➞ properties ➞ position-anchor ➞ auto Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  51. css ➞ properties ➞ position-area
    Backfilled for Firefox  ➞  2 of 3 engines
  52. css ➞ properties ➞ position-area ➞ block-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  53. css ➞ properties ➞ position-area ➞ block-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  54. css ➞ properties ➞ position-area ➞ bottom Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  55. css ➞ properties ➞ position-area ➞ center Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  56. css ➞ properties ➞ position-area ➞ end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  57. css ➞ properties ➞ position-area ➞ inline-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  58. css ➞ properties ➞ position-area ➞ inline-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  59. css ➞ properties ➞ position-area ➞ left Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  60. css ➞ properties ➞ position-area ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  61. css ➞ properties ➞ position-area ➞ right Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  62. css ➞ properties ➞ position-area ➞ self-block-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  63. css ➞ properties ➞ position-area ➞ self-block-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  64. css ➞ properties ➞ position-area ➞ self-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  65. css ➞ properties ➞ position-area ➞ self-inline-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  66. css ➞ properties ➞ position-area ➞ self-inline-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  67. css ➞ properties ➞ position-area ➞ self-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  68. css ➞ properties ➞ position-area ➞ span-all Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  69. css ➞ properties ➞ position-area ➞ span-block-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  70. css ➞ properties ➞ position-area ➞ span-block-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  71. css ➞ properties ➞ position-area ➞ span-bottom Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  72. css ➞ properties ➞ position-area ➞ span-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  73. css ➞ properties ➞ position-area ➞ span-inline-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  74. css ➞ properties ➞ position-area ➞ span-inline-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  75. css ➞ properties ➞ position-area ➞ span-left Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  76. css ➞ properties ➞ position-area ➞ span-right Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  77. css ➞ properties ➞ position-area ➞ span-self-block-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  78. css ➞ properties ➞ position-area ➞ span-self-block-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  79. css ➞ properties ➞ position-area ➞ span-self-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  80. css ➞ properties ➞ position-area ➞ span-self-inline-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  81. css ➞ properties ➞ position-area ➞ span-self-inline-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  82. css ➞ properties ➞ position-area ➞ span-self-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  83. css ➞ properties ➞ position-area ➞ span-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  84. css ➞ properties ➞ position-area ➞ span-top Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  85. css ➞ properties ➞ position-area ➞ span-x-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  86. css ➞ properties ➞ position-area ➞ span-x-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  87. css ➞ properties ➞ position-area ➞ span-y-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  88. css ➞ properties ➞ position-area ➞ span-y-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  89. css ➞ properties ➞ position-area ➞ start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  90. css ➞ properties ➞ position-area ➞ top Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  91. css ➞ properties ➞ position-area ➞ x-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  92. css ➞ properties ➞ position-area ➞ x-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  93. css ➞ properties ➞ position-area ➞ y-end Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  94. css ➞ properties ➞ position-area ➞ y-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  95. css ➞ properties ➞ position-try
    Backfilled for Firefox  ➞  3 of 3 engines
  96. css ➞ properties ➞ position-try-fallbacks
    Backfilled for Firefox  ➞  2 of 3 engines
  97. css ➞ properties ➞ position-try-fallbacks ➞ flip-block Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  98. css ➞ properties ➞ position-try-fallbacks ➞ flip-inline Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  99. css ➞ properties ➞ position-try-fallbacks ➞ flip-start Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  100. css ➞ properties ➞ position-try-fallbacks ➞ none Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  101. css ➞ properties ➞ position-try-fallbacks ➞ position-area Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  102. css ➞ properties ➞ position-visibility
    Backfilled for Firefox  ➞  2 of 3 engines
  103. css ➞ properties ➞ position-visibility ➞ always Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  104. css ➞ properties ➞ position-visibility ➞ no-overflow Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  105. css ➞ properties ➞ right ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  106. css ➞ properties ➞ right ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  107. css ➞ properties ➞ top ➞ anchor Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  108. css ➞ properties ➞ top ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  109. css ➞ properties ➞ width ➞ anchor-size Spec link
    Backfilled for Firefox  ➞  3 of 3 engines
  110. css ➞ types ➞ anchor
    Backfilled for Firefox  ➞  3 of 3 engines
  111. css ➞ properties ➞ position-area ➞ self-x-end Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  112. css ➞ properties ➞ position-area ➞ self-x-start Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  113. css ➞ properties ➞ position-area ➞ self-y-end Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  114. css ➞ properties ➞ position-area ➞ self-y-start Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  115. css ➞ properties ➞ position-area ➞ span-self-x-end Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  116. css ➞ properties ➞ position-area ➞ span-self-x-start Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  117. css ➞ properties ➞ position-area ➞ span-self-y-end Spec link
    Backfilled for Firefox  ➞  2 of 3 engines
  118. css ➞ properties ➞ position-area ➞ span-self-y-start Spec link
    Backfilled for Firefox  ➞  2 of 3 engines

HTML

  1. html ➞ elements ➞ button ➞ popovertarget ➞ implicit_anchor_reference
    Backfilled for Firefox  ➞  2 of 3 engines
  2. html ➞ elements ➞ input ➞ popovertarget ➞ implicit_anchor_reference
    Backfilled for Firefox  ➞  2 of 3 engines

JAVASCRIPT

  1. javascript ➞ statements ➞ import ➞ import_attributes ➞ type_css
    Backfilled for Firefox  ➞  2 of 3 engines

WEBDRIVER

  1. webdriver ➞ bidi ➞ network ➞ getData ➞ dataType_parameter ➞ response Spec link
    Backfilled for Chrome  ➞  2 of 3 engines

New entries (13)

The entries in this section were not found in BCD on Friday, 17 October 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 ➞ GPUDevice ➞ createBindGroup ➞ descriptor_entries_resource_parameter_accepts_GPUBuffer
  2. api ➞ GPUDevice ➞ createBindGroup ➞ descriptor_entries_resource_parameter_accepts_GPUTextureView

CSS

  1. css ➞ properties ➞ position-area ➞ self-x-end
  2. css ➞ properties ➞ position-area ➞ self-x-start
  3. css ➞ properties ➞ position-area ➞ self-y-end
  4. css ➞ properties ➞ position-area ➞ self-y-start
  5. css ➞ properties ➞ position-area ➞ span-self-x-end
  6. css ➞ properties ➞ position-area ➞ span-self-x-start
  7. css ➞ properties ➞ position-area ➞ span-self-y-end
  8. css ➞ properties ➞ position-area ➞ span-self-y-start

WEBDRIVER

  1. webdriver ➞ bidi ➞ network ➞ getData ➞ cached_responses
  2. webdriver ➞ bidi ➞ network ➞ getData ➞ dataType_parameter ➞ request
  3. webdriver ➞ bidi ➞ network ➞ getData ➞ data_url

Removed entries (9)

The entries in this section were found in BCD on Friday, 17 October 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 ➞ GPUDevice ➞ createBindGroup ➞ descriptor_entries_option_accepts_GPUTextureView_resource

CSS

  1. css ➞ properties ➞ position-area ➞ span-x-self-end
  2. css ➞ properties ➞ position-area ➞ span-x-self-start
  3. css ➞ properties ➞ position-area ➞ span-y-self-end
  4. css ➞ properties ➞ position-area ➞ span-y-self-start
  5. css ➞ properties ➞ position-area ➞ x-self-end
  6. css ➞ properties ➞ position-area ➞ x-self-start
  7. css ➞ properties ➞ position-area ➞ y-self-end
  8. css ➞ properties ➞ position-area ➞ y-self-start