Summary of BCD changes from through π
Browser Support Changes: +4, -0
Support increases (4)
API
CSS
BCD Metadata Changes: 255
Show all 255 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 (112)
The entries in this section saw support information change since the report on Monday, 5 October 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.
API
-
api β InputEvent β isComposing
Backfilled for Safari β 3 of 3 engines -
api β KeyboardEvent β isComposing
Backfilled for Safari β 3 of 3 engines -
api β SpeechRecognition β available_static β options_parameter
Backfilled for Firefox β 2 of 3 engines -
api β SpeechRecognition β available_static β options_parameter β options_langs_parameter
Backfilled for Firefox β 2 of 3 engines -
api β SpeechRecognition β available_static β options_parameter β options_processLocally_parameter
Backfilled for Firefox β 2 of 3 engines -
api β SpeechRecognition β install_static β options_parameter
Backfilled for Firefox β 2 of 3 engines -
api β SpeechRecognition β install_static β options_parameter β options_langs_parameter
Backfilled for Firefox β 2 of 3 engines -
api β SpeechRecognition β install_static β options_parameter β options_processLocally_parameter
Backfilled for Firefox β 2 of 3 engines -
api β Element β pseudo β type_parameter
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β after_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β backdrop_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β before_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β marker_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β scroll-marker_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β view-transition-group_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β view-transition-image-pair_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β view-transition-transition-new_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β view-transition-transition-old_pseudo
Backfilled for Chrome β 1 of 3 engines -
api β Element β pseudo β type_parameter β view-transition_pseudo
Backfilled for Chrome β 1 of 3 engines
CSS
-
css β properties β line-clamp β no-ellipsis
Backfilled for Firefox β 3 of 3 engines -
css β properties β line-clamp β string
Backfilled for Firefox β 2 of 3 engines -
css β types β corner-shape-value
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β bevel
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β notch
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β round
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β scoop
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β square
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β squircle
Backfilled for Firefox β 3 of 3 engines -
css β types β corner-shape-value β superellipse
Backfilled for Firefox β 3 of 3 engines -
css β types β superellipse
Backfilled for Firefox β 3 of 3 engines -
css β at-rules β page β at_bottom-center
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_bottom-left
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_bottom-left-corner
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_bottom-right
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_bottom-right-corner
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_left-bottom
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_left-middle
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_left-top
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_right-bottom
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_right-middle
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_right-top
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_top-center
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_top-left
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_top-left-corner
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_top-right
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β at_top-right-corner
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β page β page-margin-safety
Backfilled for Chrome β 1 of 3 engines -
css β properties β align-content β baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β center
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β context_block
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β context_flex
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β context_grid
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β context_multicol
Backfilled for Chrome β 2 of 3 engines -
css β properties β align-content β end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β first_baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β flex-end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β flex-start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β last_baseline
Backfilled for Firefox β 2 of 3 engines -
css β properties β align-content β safe
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β space-around
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β space-between
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β space-evenly
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β stretch
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-content β unsafe
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β center
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β context_flex
Backfilled for Firefox β 2 of 3 engines -
css β properties β align-items β context_flex β end_in_flex
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β context_flex β start_in_flex
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β context_grid
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β first_baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β flex-end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β flex-start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β last_baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β normal
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β safe
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β self-end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β self-start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β stretch
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-items β unsafe
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β center
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β context_flex
Backfilled for Firefox β 2 of 3 engines -
css β properties β align-self β context_flex β stretch_in_flex
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β context_grid
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β context_position_absolute
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β first_baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β flex-end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β flex-start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β last_baseline
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β safe
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β self-end
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β self-start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β start
Backfilled for Firefox β 3 of 3 engines -
css β properties β align-self β unsafe
Backfilled for Firefox β 3 of 3 engines -
css β types β attr β raw-string
Backfilled for Firefox β 3 of 3 engines -
css β types β color β system-color β accentcolor
Backfilled for Firefox β 3 of 3 engines -
css β types β color β system-color β accentcolortext
Backfilled for Firefox β 3 of 3 engines
JAVASCRIPT
-
javascript β operators β import β defer
Backfilled for Firefox β 2 of 3 engines -
javascript β statements β import β defer
Backfilled for Firefox β 2 of 3 engines -
javascript β operators β import β http_errors_not_cached
Backfilled for Firefox β 3 of 3 engines -
javascript β statements β import β http_errors_not_cached
Backfilled for Firefox β 3 of 3 engines
HTML
-
html β elements β script β type β module β http_errors_not_cached
Backfilled for Firefox β 3 of 3 engines -
html β elements β textarea β wrap β off
Backfilled for Firefox β 3 of 3 engines -
html β elements β textarea β wrap β soft
Backfilled for Firefox β 3 of 3 engines
SVG
-
svg β elements β textPath β method
Backfilled for Firefox β 3 of 3 engines -
svg β elements β textPath β method β align
Backfilled for Firefox β 3 of 3 engines -
svg β elements β textPath β method β stretch
Backfilled for Firefox β 3 of 3 engines
New entries (97)
The entries in this section were not found in BCD on Monday, 5 October 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 (βRemoved BCD entriesβ) because of a Working Group deciding on a rename.
API
- api β Element β pseudo β type_parameter
- api β Element β pseudo β type_parameter β after_pseudo
- api β Element β pseudo β type_parameter β backdrop_pseudo
- api β Element β pseudo β type_parameter β before_pseudo
- api β Element β pseudo β type_parameter β marker_pseudo
- api β Element β pseudo β type_parameter β scroll-marker_pseudo
- api β Element β pseudo β type_parameter β view-transition-group_pseudo
- api β Element β pseudo β type_parameter β view-transition-image-pair_pseudo
- api β Element β pseudo β type_parameter β view-transition-transition-new_pseudo
- api β Element β pseudo β type_parameter β view-transition-transition-old_pseudo
- api β Element β pseudo β type_parameter β view-transition_pseudo
- api β GPUDevice β createRenderPipeline β vertex_1-component
- api β GPUDevice β createRenderPipeline β vertex_unorm8x4-bgra
- api β GPUDevice β createRenderPipelineAsync β vertex_1-component
- api β GPUDevice β createRenderPipelineAsync β vertex_unorm8x4-bgra
- api β VRStageParameters β sizeZ
CSS
- css β at-rules β page β at_bottom-center
- css β at-rules β page β at_bottom-left
- css β at-rules β page β at_bottom-left-corner
- css β at-rules β page β at_bottom-right
- css β at-rules β page β at_bottom-right-corner
- css β at-rules β page β at_left-bottom
- css β at-rules β page β at_left-middle
- css β at-rules β page β at_left-top
- css β at-rules β page β at_right-bottom
- css β at-rules β page β at_right-middle
- css β at-rules β page β at_right-top
- css β at-rules β page β at_top-center
- css β at-rules β page β at_top-left
- css β at-rules β page β at_top-left-corner
- css β at-rules β page β at_top-right
- css β at-rules β page β at_top-right-corner
- css β at-rules β page β page-margin-safety
- css β properties β align-content β baseline
- css β properties β align-content β center
- css β properties β align-content β context_block
- css β properties β align-content β context_flex
- css β properties β align-content β context_grid
- css β properties β align-content β context_multicol
- css β properties β align-content β end
- css β properties β align-content β first_baseline
- css β properties β align-content β flex-end
- css β properties β align-content β flex-start
- css β properties β align-content β last_baseline
- css β properties β align-content β safe
- css β properties β align-content β space-around
- css β properties β align-content β space-between
- css β properties β align-content β space-evenly
- css β properties β align-content β start
- css β properties β align-content β stretch
- css β properties β align-content β unsafe
- css β properties β align-items β baseline
- css β properties β align-items β center
- css β properties β align-items β context_flex
- css β properties β align-items β context_flex β end_in_flex
- css β properties β align-items β context_flex β start_in_flex
- css β properties β align-items β context_grid
- css β properties β align-items β end
- css β properties β align-items β first_baseline
- css β properties β align-items β flex-end
- css β properties β align-items β flex-start
- css β properties β align-items β last_baseline
- css β properties β align-items β normal
- css β properties β align-items β safe
- css β properties β align-items β self-end
- css β properties β align-items β self-start
- css β properties β align-items β start
- css β properties β align-items β stretch
- css β properties β align-items β unsafe
- css β properties β align-self β baseline
- css β properties β align-self β center
- css β properties β align-self β context_flex
- css β properties β align-self β context_flex β stretch_in_flex
- css β properties β align-self β context_grid
- css β properties β align-self β context_position_absolute
- css β properties β align-self β end
- css β properties β align-self β first_baseline
- css β properties β align-self β flex-end
- css β properties β align-self β flex-start
- css β properties β align-self β last_baseline
- css β properties β align-self β safe
- css β properties β align-self β self-end
- css β properties β align-self β self-start
- css β properties β align-self β start
- css β properties β align-self β unsafe
- css β properties β scroll-snap-type β pair
- css β types β attr β raw-string
- css β types β color β system-color β accentcolor
- css β types β color β system-color β accentcolortext
HTML
- html β elements β script β type β module β http_errors_not_cached
- html β elements β textarea β wrap β off
- html β elements β textarea β wrap β soft
JAVASCRIPT
- javascript β operators β import β http_errors_not_cached
- javascript β statements β import β http_errors_not_cached
SVG
- svg β elements β textPath β method
- svg β elements β textPath β method β align
- svg β elements β textPath β method β stretch
Removed entries (46)
The entries in this section were found in BCD on Monday, 5 October 2026, 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
- api β VRStageParameters β sizeY
CSS
- css β at-rules β page β bottom-center
- css β at-rules β page β bottom-left
- css β at-rules β page β bottom-left-corner
- css β at-rules β page β bottom-right
- css β at-rules β page β bottom-right-corner
- css β at-rules β page β left-bottom
- css β at-rules β page β left-middle
- css β at-rules β page β left-top
- css β at-rules β page β right-bottom
- css β at-rules β page β right-middle
- css β at-rules β page β right-top
- css β at-rules β page β top-center
- css β at-rules β page β top-left
- css β at-rules β page β top-left-corner
- css β at-rules β page β top-right
- css β at-rules β page β top-right-corner
- css β properties β align-content β block_context
- css β properties β align-content β flex_context
- css β properties β align-content β flex_context β baseline
- css β properties β align-content β flex_context β first_baseline
- css β properties β align-content β flex_context β last_baseline
- css β properties β align-content β flex_context β safe_unsafe
- css β properties β align-content β flex_context β space-evenly
- css β properties β align-content β flex_context β start_end
- css β properties β align-content β flex_context β stretch
- css β properties β align-content β grid_context
- css β properties β align-content β multicol_context
- css β properties β align-items β flex_context
- css β properties β align-items β flex_context β baseline
- css β properties β align-items β flex_context β first_baseline
- css β properties β align-items β flex_context β last_baseline
- css β properties β align-items β flex_context β safe_unsafe
- css β properties β align-items β flex_context β start_end
- css β properties β align-items β grid_context
- css β properties β align-items β grid_context β start_end
- css β properties β align-self β flex_context
- css β properties β align-self β flex_context β baseline
- css β properties β align-self β flex_context β first_baseline
- css β properties β align-self β flex_context β last_baseline
- css β properties β align-self β flex_context β safe_unsafe
- css β properties β align-self β flex_context β start_end
- css β properties β align-self β flex_context β stretch
- css β properties β align-self β grid_context
- css β properties β align-self β position_absolute_context
- css β types β color β system-color β accentcolor_accentcolortext