Summary of BCD changes from through π
Browser Support Changes: +44, -0
Support increases (44)
API
-
api β CustomElementRegistry β CustomElementRegistry
Added to Chrome β 2 of 3 engines -
api β CustomElementRegistry β initialize
Added to Chrome β 2 of 3 engines -
api β Document β customElementRegistry
Added to Chrome β 2 of 3 engines -
api β Element β customElementRegistry
Added to Chrome β 2 of 3 engines -
api β HTMLTemplateElement β shadowRootCustomElementRegistry
Added to Chrome β 2 of 3 engines -
api β NavigationPrecommitController β addHandler
Added to Chrome β 2 of 3 engines -
api β ShadowRoot β customElementRegistry
Added to Chrome β 2 of 3 engines -
api β AnimationTrigger
Added to Chrome β 1 of 3 engines -
api β GPUSupportedLimits β maxStorageBuffersInFragmentStage
Added to Chrome β 1 of 3 engines -
api β GPUSupportedLimits β maxStorageBuffersInVertexStage
Added to Chrome β 1 of 3 engines -
api β GPUSupportedLimits β maxStorageTexturesInFragmentStage
Added to Chrome β 1 of 3 engines -
api β GPUSupportedLimits β maxStorageTexturesInVertexStage
Added to Chrome β 1 of 3 engines -
api β GPUTexture β textureBindingViewDimension
Added to Chrome β 1 of 3 engines
CSS
-
css β properties β position-visibility β anchors-valid
Added to Safari β 2 of 3 engines -
css β properties β text-indent β each-line
Added to Chrome β 3 of 3 engines -
css β properties β text-indent β hanging
Added to Chrome β 3 of 3 engines -
css β types β basic-shape β shape
Added to Firefox β 3 of 3 engines -
css β properties β animation-trigger
Added to Chrome β 1 of 3 engines -
css β properties β animation-trigger β none
Added to Chrome β 1 of 3 engines -
css β properties β overflow β replaced_elements
Added to Firefox β 2 of 3 engines -
css β properties β overflow-x β replaced_elements
Added to Firefox β 2 of 3 engines -
css β properties β overflow-y β replaced_elements
Added to Firefox β 2 of 3 engines -
css β properties β timeline-trigger
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger β auto
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger β none
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger β normal
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger-name
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger-name β none
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger-source
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger-source β auto
Added to Chrome β 1 of 3 engines -
css β properties β timeline-trigger-source β none
Added to Chrome β 1 of 3 engines -
css β properties β trigger-scope
Added to Chrome β 1 of 3 engines -
css β properties β trigger-scope β all
Added to Chrome β 1 of 3 engines -
css β properties β trigger-scope β none
Added to Chrome β 1 of 3 engines
HTTP
-
http β headers β Accept-Encoding β zstd
Added to Safari β 3 of 3 engines -
http β headers β Content-Encoding β zstd
Added to Safari β 3 of 3 engines
JAVASCRIPT
-
javascript β builtins β Iterator β concat
Added to Chrome β 2 of 3 engines
WEBASSEMBLY
-
webassembly β api β Memory β toFixedLengthBuffer
Added to Safari β 3 of 3 engines -
webassembly β api β Memory β toResizableBuffer
Added to Safari β 3 of 3 engines
WEBDRIVER
-
webdriver β bidi β userAgentClientHints
Added to Chrome β 1 of 3 engines -
webdriver β bidi β userAgentClientHints β setClientHintsOverride
Added to Chrome β 1 of 3 engines -
webdriver β bidi β userAgentClientHints β setClientHintsOverride β clientHints_parameter
Added to Chrome β 1 of 3 engines -
webdriver β bidi β userAgentClientHints β setClientHintsOverride β contexts_parameter
Added to Chrome β 1 of 3 engines -
webdriver β bidi β userAgentClientHints β setClientHintsOverride β userContexts_parameter
Added to Chrome β 1 of 3 engines
BCD Metadata Changes: 201
Show all 201 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 (86)
The entries in this section saw support information change since the report on Friday, 6 February 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 Clipboard β clipboardchange_event
Backfilled for Chrome β 1 of 3 engines -
api β CrashReportContext
Backfilled for Chrome β 1 of 3 engines -
api β CrashReportContext β delete
Backfilled for Chrome β 1 of 3 engines -
api β CrashReportContext β initialize
Backfilled for Chrome β 1 of 3 engines -
api β CrashReportContext β set
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β HTMLGeolocationElement
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β autolocate
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β error
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β initialPermissionStatus
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β invalidReason
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β isValid
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β location_event
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β permissionStatus
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β position
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β promptaction_event
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β promptdismiss_event
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β validationstatuschange_event
Backfilled for Chrome β 1 of 3 engines -
api β HTMLGeolocationElement β watch
Backfilled for Chrome β 1 of 3 engines -
api β Window β crashReport
Backfilled for Chrome β 1 of 3 engines
CSS
-
css β at-rules β container β scroll-state_queries β scrolled
Backfilled for Chrome β 1 of 3 engines -
css β at-rules β media β scan
Backfilled for Firefox β 3 of 3 engines -
css β properties β background β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β background β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position-x β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position-x β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position-y β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β background-position-y β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β mask β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β mask β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β mask β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β mask β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β mask-position β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β mask-position β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β mask-position β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β mask-position β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β object-position β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β object-position β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β object-position β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β object-position β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-anchor β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-anchor β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-anchor β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-anchor β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-position β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-position β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-position β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β offset-position β y-start
Backfilled for Safari β 1 of 3 engines -
css β properties β perspective-origin β x-end
Backfilled for Safari β 1 of 3 engines -
css β properties β perspective-origin β x-start
Backfilled for Safari β 1 of 3 engines -
css β properties β perspective-origin β y-end
Backfilled for Safari β 1 of 3 engines -
css β properties β perspective-origin β y-start
Backfilled for Safari β 1 of 3 engines
HTML
-
html β elements β datalist β input_type_color
Backfilled for Chrome β 2 of 3 engines -
html β elements β datalist β input_type_date
Backfilled for Chrome β 2 of 3 engines -
html β elements β datalist β input_type_email
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_number
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_range
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_search
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_tel
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_text
Backfilled for Firefox β 3 of 3 engines -
html β elements β datalist β input_type_time
Backfilled for Chrome β 2 of 3 engines -
html β elements β datalist β input_type_url
Backfilled for Firefox β 3 of 3 engines -
html β elements β geolocation
Backfilled for Chrome β 1 of 3 engines -
html β elements β geolocation β autolocate
Backfilled for Chrome β 1 of 3 engines -
html β elements β geolocation β watch
Backfilled for Chrome β 1 of 3 engines -
html β elements β input β type_color β list
Backfilled for Chrome β 2 of 3 engines -
html β elements β input β type_date β list
Backfilled for Chrome β 2 of 3 engines -
html β elements β input β type_email β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_number β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_range β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_search β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_tel β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_text β list
Backfilled for Firefox β 3 of 3 engines -
html β elements β input β type_time β list
Backfilled for Chrome β 2 of 3 engines -
html β elements β input β type_url β list
Backfilled for Firefox β 3 of 3 engines
WEBEXTENSIONS
-
webextensions β api β permissions β Permissions β data_collection
Backfilled for Firefox β 1 of 3 engines
New entries (114)
The entries in this section were not found in BCD on Friday, 6 February 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 AnimationTrigger
- api β Clipboard β clipboardchange_event
- api β CrashReportContext
- api β CrashReportContext β delete
- api β CrashReportContext β initialize
- api β CrashReportContext β set
- api β GPUSupportedLimits β maxStorageBuffersInFragmentStage
- api β GPUSupportedLimits β maxStorageBuffersInVertexStage
- api β GPUSupportedLimits β maxStorageTexturesInFragmentStage
- api β GPUSupportedLimits β maxStorageTexturesInVertexStage
- api β GPUTexture β textureBindingViewDimension
- api β HTMLGeolocationElement β HTMLGeolocationElement
- api β HTMLGeolocationElement
- api β HTMLGeolocationElement β autolocate
- api β HTMLGeolocationElement β error
- api β HTMLGeolocationElement β initialPermissionStatus
- api β HTMLGeolocationElement β invalidReason
- api β HTMLGeolocationElement β isValid
- api β HTMLGeolocationElement β location_event
- api β HTMLGeolocationElement β permissionStatus
- api β HTMLGeolocationElement β position
- api β HTMLGeolocationElement β promptaction_event
- api β HTMLGeolocationElement β promptdismiss_event
- api β HTMLGeolocationElement β validationstatuschange_event
- api β HTMLGeolocationElement β watch
- api β Window β crashReport
CSS
- css β at-rules β container β scroll-state_queries β scrolled
- css β at-rules β media β scan
- css β properties β animation-trigger
- css β properties β animation-trigger β none
- css β properties β background β x-end
- css β properties β background β x-start
- css β properties β background β y-end
- css β properties β background β y-start
- css β properties β background-position β x-end
- css β properties β background-position β x-start
- css β properties β background-position β y-end
- css β properties β background-position β y-start
- css β properties β background-position-x β x-end
- css β properties β background-position-x β x-start
- css β properties β background-position-y β y-end
- css β properties β background-position-y β y-start
- css β properties β mask β x-end
- css β properties β mask β x-start
- css β properties β mask β y-end
- css β properties β mask β y-start
- css β properties β mask-position β x-end
- css β properties β mask-position β x-start
- css β properties β mask-position β y-end
- css β properties β mask-position β y-start
- css β properties β object-position β x-end
- css β properties β object-position β x-start
- css β properties β object-position β y-end
- css β properties β object-position β y-start
- css β properties β offset β x-end
- css β properties β offset β x-start
- css β properties β offset β y-end
- css β properties β offset β y-start
- css β properties β offset-anchor β x-end
- css β properties β offset-anchor β x-start
- css β properties β offset-anchor β y-end
- css β properties β offset-anchor β y-start
- css β properties β offset-position β x-end
- css β properties β offset-position β x-start
- css β properties β offset-position β y-end
- css β properties β offset-position β y-start
- css β properties β overflow β replaced_elements
- css β properties β overflow-x β replaced_elements
- css β properties β overflow-y β replaced_elements
- css β properties β perspective-origin β x-end
- css β properties β perspective-origin β x-start
- css β properties β perspective-origin β y-end
- css β properties β perspective-origin β y-start
- css β properties β timeline-trigger
- css β properties β timeline-trigger β auto
- css β properties β timeline-trigger β none
- css β properties β timeline-trigger β normal
- css β properties β timeline-trigger-name
- css β properties β timeline-trigger-name β none
- css β properties β timeline-trigger-source
- css β properties β timeline-trigger-source β auto
- css β properties β timeline-trigger-source β none
- css β properties β trigger-scope
- css β properties β trigger-scope β all
- css β properties β trigger-scope β none
HTML
- html β elements β datalist β input_type_color
- html β elements β datalist β input_type_date
- html β elements β datalist β input_type_email
- html β elements β datalist β input_type_number
- html β elements β datalist β input_type_range
- html β elements β datalist β input_type_search
- html β elements β datalist β input_type_tel
- html β elements β datalist β input_type_text
- html β elements β datalist β input_type_time
- html β elements β datalist β input_type_url
- html β elements β geolocation
- html β elements β geolocation β autolocate
- html β elements β geolocation β watch
- html β elements β input β type_color β list
- html β elements β input β type_date β list
- html β elements β input β type_email β list
- html β elements β input β type_number β list
- html β elements β input β type_range β list
- html β elements β input β type_search β list
- html β elements β input β type_tel β list
- html β elements β input β type_text β list
- html β elements β input β type_time β list
- html β elements β input β type_url β list
WEBDRIVER
- webdriver β bidi β userAgentClientHints
- webdriver β bidi β userAgentClientHints β setClientHintsOverride
- webdriver β bidi β userAgentClientHints β setClientHintsOverride β clientHints_parameter
- webdriver β bidi β userAgentClientHints β setClientHintsOverride β contexts_parameter
- webdriver β bidi β userAgentClientHints β setClientHintsOverride β userContexts_parameter
WEBEXTENSIONS
- webextensions β api β permissions β Permissions β data_collection
Removed entries (1)
The entries in this section were found in BCD on Friday, 6 February 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.
HTML
- html β elements β input β list