Web Performance Working Group - Activity
No matches.
TR publications
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6 documents published.
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Resource Timing published as a Candidate Recommendation Draft. History of Resource Timing
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High Resolution Time published 3 times as a Working Draft. History of High Resolution Time
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Navigation Timing Level 2 published as a Working Draft. History of Navigation Timing Level 2
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Server Timing published as a Working Draft. History of Server Timing
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Participants
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1 participant left.
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Dan Gayle (Shopify) left.
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GitHub
w3c/event-timing
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1 issue received 9 new comments.
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Consider documenting the INP algorithm (as a non-normative section of Event Timing spec) w3c/event-timing#157 (9 comments by @adityareddy-dev, @caribouW3, @mmocny, @tunetheweb)
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1 pull request opened.
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Add a non-normative section on computing INP w3c/event-timing#175, by @adityareddy-dev.
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1 pull request received 1 new comment.
w3c/hr-time
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2 pull requests opened.
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Add a getter to performance w3c/hr-time#178, by @yoavweiss.
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Fix up anchors w3c/hr-time#177, by @yoavweiss.
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3 pull requests merged.
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Add a getter to performance w3c/hr-time#178.
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change: Expose Performance interface to AudioWorklet w3c/hr-time#169.
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Fix up anchors w3c/hr-time#177.
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2 pull requests received 17 new comments.
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change: Expose Performance interface to AudioWorklet w3c/hr-time#169 (13 comments by @mjwilson-google, @padenot, @yoavweiss)
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w3c/largest-contentful-paint
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1 issue opened.
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Should text nodes check `-webkit-text-fill-color`? w3c/largest-contentful-paint#180, by @Loirooriol.
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1 issue received 2 new comments.
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Hover-based user input is often used for "zoom widgets", skewing LCP results w3c/largest-contentful-paint#108 (2 comments by @adardesign, @mmocny)
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1 pull request opened.
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docs: explain how to calculate LCP w3c/largest-contentful-paint#179, by @adityareddy-dev.
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1 pull request received 1 new comment.
w3c/resource-timing
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1 issue opened.
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Why does only `<body background>` get the "body" initiator type? w3c/resource-timing#438, by @canova.
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3 issues received 3 new comments.
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Resource initiator information to enable creation of dependency trees w3c/resource-timing#263 (1 comment by @guohuideng2024)
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Add service worker static routing API information to resource timing w3c/resource-timing#389 (1 comment by @MaciejZet)
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Why does only `<body background>` get the "body" initiator type? w3c/resource-timing#438 (1 comment by @noamr)
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1 pull request opened.
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Fix up anchors w3c/resource-timing#437, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/resource-timing#437.
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1 pull request received 2 new comments.
w3c/reporting
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1 issue received 1 new comment.
w3c/long-animation-frames
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1 issue opened.
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Extend PerformanceScriptTiming with threshold-triggered stackTrace w3c/long-animation-frames#47, by @elkurin.
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1 issue received 3 new comments.
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Extend PerformanceScriptTiming with threshold-triggered stackTrace w3c/long-animation-frames#47 (3 comments by @mmocny, @noamr)
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w3c/performance-timeline
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1 pull request opened.
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Fix up anchors w3c/performance-timeline#234, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/performance-timeline#234.
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w3c/server-timing
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1 pull request opened.
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Fix up anchors w3c/server-timing#106, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/server-timing#106.
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w3c/user-timing
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1 pull request opened.
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Fix up anchors w3c/user-timing#130, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/user-timing#130.
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w3c/network-error-logging
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1 pull request opened.
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Fix up anchors w3c/network-error-logging#209, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/network-error-logging#209.
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w3c/beacon
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1 pull request opened.
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Fix up anchors w3c/beacon#87, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/beacon#87.
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w3c/navigation-timing
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1 pull request opened.
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Fix up anchors w3c/navigation-timing#220, by @yoavweiss.
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1 pull request merged.
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Fix up anchors w3c/navigation-timing#220.
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TR publications
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5 documents published.
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Paint Timing published twice as a Working Draft. History of Paint Timing
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Event Timing API published as a Working Draft. History of Event Timing API
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Device Memory API published as a Discontinued Draft. History of Device Memory API
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Long Tasks API published as a Discontinued Draft. History of Long Tasks API
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Past meetings
Participants
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1 participant joined.
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Helmut Januschka (W3C Invited Experts) joined.
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3 participants left.
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Limin Zhu (Microsoft Corporation) left.
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TIEN MAI (Microsoft Corporation) left.
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Patrick Hamann (Fastly) left.
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GitHub
w3c/timing-entrytypes-registry
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1 issue received 1 new comment.
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1 pull request opened.
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Container Timing is now in WebPerfWG not WICG w3c/timing-entrytypes-registry#27, by @tunetheweb.
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1 pull request merged.
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Container Timing is now in WebPerfWG not WICG w3c/timing-entrytypes-registry#27.
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w3c/resource-timing
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2 issues received 2 new comments.
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Clarify Resource Timing semantics for Early Hints preloads w3c/resource-timing#435 (1 comment by @MaciejZet)
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w3c/performance-timeline
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1 issue opened.
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Dropped entries count increases for entries that "should add entry" rejects w3c/performance-timeline#232, by @canova.
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1 issue closed.
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Dropped entries count increases for entries that "should add entry" rejects w3c/performance-timeline#232.
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1 issue received 1 new comment.
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Should a new PerformanceObserver with buffered:true require buffered entries synchronously? w3c/performance-timeline#231 (1 comment by @nhelfman)
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1 pull request opened.
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Only count dropped entries that should have been buffered w3c/performance-timeline#233, by @canova.
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1 pull request merged.
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Only count dropped entries that should have been buffered w3c/performance-timeline#233.
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w3c/largest-contentful-paint
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1 issue closed.
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`<img>` in `timing-eligible` says nothing about `contentful` w3c/largest-contentful-paint#177.
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3 issues received 5 new comments.
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`paintTextNodes` definition doesn't work for paintable pseudo-elements w3c/largest-contentful-paint#149 (2 comments by @shaseley)
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What is the behavior when paints emit from inside the Shadow DOM? w3c/largest-contentful-paint#152 (2 comments by @fbuecklers, @mmocny)
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LCP does not exclude whitespace-only text elements like FCP w3c/largest-contentful-paint#163 (1 comment by @tunetheweb)
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w3c/event-timing
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2 issues opened.
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483d73a8dda153139d3c6b9d1ac7b469af65fafb w3c/event-timing#174, by @moh5544.
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Broken links in Event Timing API w3c/event-timing#172, by @dontcallmedom-bot.
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2 issues closed.
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483d73a8dda153139d3c6b9d1ac7b469af65fafb w3c/event-timing#174.
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Broken links in Event Timing API w3c/event-timing#172.
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3 issues received 5 new comments.
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Add (more) WPT test coverage for synthetic events. w3c/event-timing#171 (2 comments by @adityareddy-dev)
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Proposal: DOM event identifier which can map to EventTimingPerformance entry w3c/event-timing#108 (2 comments by @adityareddy-dev, @mmocny)
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Consider documenting the INP algorithm (as a non-normative section of Event Timing spec) w3c/event-timing#157 (1 comment by @adityareddy-dev)
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1 pull request opened.
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Fix #172: Fix broken links to Pointer Events w3c/event-timing#173, by @yoavweiss.
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1 pull request merged.
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Fix #172: Fix broken links to Pointer Events w3c/event-timing#173.
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w3c/long-animation-frames
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1 issue closed.
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Usage example near the top of the spec repeats the `observer.observe` code w3c/long-animation-frames#24, by @noamr.
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6 pull requests opened.
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Record module script execution start time for dynamic import() w3c/long-animation-frames#46, by @noamr.
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Register entry type with Performance Timeline and editorial cleanups w3c/long-animation-frames#44, by @noamr.
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Fix firstUIEventTimestamp, src quoting, paintTime duration, and detached windows w3c/long-animation-frames#43, by @noamr.
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Specify WebIDL promise invoker naming and call-site source locations w3c/long-animation-frames#42, by @noamr.
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Fix classic script timing and URL exposure w3c/long-animation-frames#41, by @noamr.
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Do not record or report long animation frames for hidden documents w3c/long-animation-frames#40, by @noamr.
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8 pull requests merged.
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Register entry type with Performance Timeline and editorial cleanups w3c/long-animation-frames#44.
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Fix firstUIEventTimestamp, src quoting, paintTime duration, and detached windows w3c/long-animation-frames#43.
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Specify WebIDL promise invoker naming and call-site source locations w3c/long-animation-frames#42.
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Fix a few script-related bugs w3c/long-animation-frames#41.
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Do not record or report long animation frames for hidden documents w3c/long-animation-frames#40.
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Add sourceLine and sourceColumn to PerformanceScriptTiming w3c/long-animation-frames#29, by @noamr.
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Remove duplicate observer registration in initial usage example w3c/long-animation-frames#26, by @noamr.
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Add styleDuration, layoutDuration, forcedStyleDuration, and forcedLayoutDuration w3c/long-animation-frames#30.
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2 pull requests received 14 new comments.
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Add styleDuration, layoutDuration, forcedStyleDuration, and forcedLayoutDuration w3c/long-animation-frames#30 (12 comments by @noamr, @yoavweiss)
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Fix classic script timing and URL exposure w3c/long-animation-frames#41 (2 comments by @noamr, @yoavweiss)
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w3c/device-memory
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1 pull request opened.
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Delete .github/workflows/auto-publish.yml w3c/device-memory#71, by @caribouW3.
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1 pull request merged.
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Delete .github/workflows/auto-publish.yml w3c/device-memory#71, by @yoavweiss.
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w3c/longtasks
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1 pull request opened.
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Delete .github/workflows/auto-publish.yml w3c/longtasks#144, by @caribouW3.
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1 pull request merged.
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Delete .github/workflows/auto-publish.yml w3c/longtasks#144, by @yoavweiss.
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w3c/hr-time
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2 issues received 2 new comments.
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Security and privacy considerations for DOMHighResTimeStamp resolution w3c/hr-time#79 (1 comment by @isma29332-coder)
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1 pull request received 1 new comment.
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change: Expose Performance interface to AudioWorklet w3c/hr-time#169 (1 comment by @mjwilson-google)
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w3c/paint-timing
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1 issue opened.
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Attribute images painted by pseudo-elements to their originating element w3c/paint-timing#132, by @jdapena.
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1 issue received 1 new comment.
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Attribute images painted by pseudo-elements to their originating element w3c/paint-timing#132 (1 comment by @jdapena)
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2 pull requests opened.
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Add `paintable` definition to iframe w3c/paint-timing#133, by @shubhamg13.
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Add existing `contentful-image` reference w3c/paint-timing#131, by @shubhamg13.
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2 pull requests merged.
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Add `paintable` definition to iframe w3c/paint-timing#133.
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Add existing `contentful-image` reference w3c/paint-timing#131.
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2 pull requests received 7 new comments.
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Add `paintable` definition to iframe w3c/paint-timing#133 (5 comments by @noamr, @shubhamg13, @w3cbot)
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w3c/navigation-timing
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2 issues closed.
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Clarify how PerformanceTiming.responseStart relates to Early Hint responses w3c/navigation-timing#181.
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Extend Navigation Timing API to include back/forward cache NotRestoredReasons w3c/navigation-timing#171.
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2 issues received 2 new comments.
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Clarify how PerformanceTiming.responseStart relates to Early Hint responses w3c/navigation-timing#181 (1 comment by @tunetheweb)
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Extend Navigation Timing API to include back/forward cache NotRestoredReasons w3c/navigation-timing#171 (1 comment by @tunetheweb)
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w3c/element-timing
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1 issue received 1 new comment.
w3c/web-performance
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1 pull request opened.
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Fix up index w3c/web-performance#75, by @yoavweiss.
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1 pull request merged.
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Fix up index w3c/web-performance#75.
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TR publications
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4 documents published.
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Resource Timing published as a Candidate Recommendation Draft. History of Resource Timing
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Paint Timing published as a Working Draft. History of Paint Timing
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High Resolution Time published as a Working Draft. History of High Resolution Time
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Navigation Timing Level 2 published as a Working Draft. History of Navigation Timing Level 2
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Participants
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4 participants joined.
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Viktoria Zlatinova (Microsoft Corporation) joined.
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Jennifer Strickland (W3C Invited Experts) joined.
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Dan Gayle (Shopify) joined.
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Cameron Brown (Google LLC) joined.
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5 participants left.
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Jennifer Strickland (W3C Invited Experts) left.
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Abin Paul (W3C Invited Experts) left.
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Peter Perlepes (W3C Invited Experts) left.
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Michelle Vu (W3C Invited Experts) left.
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Tim Kadlec (W3C Invited Experts) left.
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GitHub
w3c/largest-contentful-paint
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1 issue opened.
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`<img>` in `timing-eligible` says nothing about `contentful` w3c/largest-contentful-paint#177, by @shubhamg13.
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1 issue closed.
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The definition of `effective visual size` is circular w3c/largest-contentful-paint#143.
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5 issues received 12 new comments.
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Usage of textNode is overloaded w3c/largest-contentful-paint#175 (5 comments by @mmocny, @shaseley, @shubhamg13)
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`<img>` in `timing-eligible` says nothing about `contentful` w3c/largest-contentful-paint#177 (3 comments by @mmocny, @shubhamg13)
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The definition of `effective visual size` is circular w3c/largest-contentful-paint#143 (2 comments by @mmocny, @shubhamg13)
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Background purposed images is not properly defined in the spec w3c/largest-contentful-paint#28 (1 comment by @shubhamg13)
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Define element "intersectionRect" to include "clientContentRect" as per "effective visual size" w3c/largest-contentful-paint#168 (1 comment by @shubhamg13)
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2 pull requests opened.
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Add a note for full page background image w3c/largest-contentful-paint#178, by @shubhamg13.
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Exempt video elements from the low-content image heuristic w3c/largest-contentful-paint#176, by @hjanuschka.
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3 pull requests received 8 new comments.
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Exempt video elements from the low-content image heuristic w3c/largest-contentful-paint#176 (3 comments by @mmocny, @shaseley)
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Generalize `request` variable name w3c/largest-contentful-paint#173 (3 comments by @mmocny, @shubhamg13)
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Add a note for full page background image w3c/largest-contentful-paint#178 (2 comments by @shubhamg13, @w3cbot)
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w3c/hr-time
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1 pull request merged.
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Add 'attribute' keyword to IDL attribute dfns for Bikeshed w3c/hr-time#174.
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1 pull request received 1 new comment.
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change: Expose Performance interface to AudioWorklet w3c/hr-time#169 (1 comment by @mjwilson-google)
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w3c/web-performance
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1 issue received 1 new comment.
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https://www.w3.org/webperf/ homepage looks unstylized w3c/web-performance#71 (1 comment by @nicjansma)
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2 pull requests opened.
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Add WebPerfWG minutes for September 24th, 2026 w3c/web-performance#74, by @nicjansma.
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Add WebPerfWG minutes for September 10th, 2026 w3c/web-performance#73, by @nicjansma.
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2 pull requests merged.
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Add WebPerfWG minutes for September 24th, 2026 w3c/web-performance#74.
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Add WebPerfWG minutes for September 10th, 2026 w3c/web-performance#73.
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w3c/performance-timeline
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1 issue opened.
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Should a new PerformanceObserver with buffered:true require buffered entries synchronously? w3c/performance-timeline#231, by @mmocny.
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1 issue received 5 new comments.
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Should a new PerformanceObserver with buffered:true require buffered entries synchronously? w3c/performance-timeline#231 (5 comments by @mmocny)
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w3c/paint-timing
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1 issue opened.
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contentful text doesn't need to check opacity w3c/paint-timing#129, by @shubhamg13.
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1 issue received 4 new comments.
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contentful text doesn't need to check opacity w3c/paint-timing#129 (4 comments by @jasonwilliams, @noamr, @shubhamg13)
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2 pull requests opened.
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Add `border-image-source` to `contentful` list w3c/paint-timing#128, by @shubhamg13.
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1 pull request merged.
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Add `border-image-source` to `contentful` list w3c/paint-timing#128.
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2 pull requests received 5 new comments.
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Omit opacity for `text node` in contentful definition as it is already included in paintable definition w3c/paint-timing#130 (3 comments by @jasonwilliams, @shubhamg13, @w3cbot)
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Add `border-image-source` to `contentful` list w3c/paint-timing#128 (2 comments by @shubhamg13, @w3cbot)
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w3c/reporting
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2 pull requests opened.
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Close <section> element in network-reporting.bs w3c/reporting#293, by @apasel422.
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Recommend sf-token for structured field endpoint parameters w3c/reporting#292, by @apasel422.
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2 pull requests merged.
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Recommend sf-token for structured field endpoint parameters w3c/reporting#292.
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Close <section> element in network-reporting.bs w3c/reporting#293.
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1 pull request received 4 new comments.
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Recommend sf-token for structured field endpoint parameters w3c/reporting#292 (4 comments by @apasel422, @clelland)
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w3c/timing-entrytypes-registry
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1 issue opened.
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Make this a Living Spec w3c/timing-entrytypes-registry#26, by @tunetheweb.
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1 issue closed.
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Missing `visibility-state` entry type w3c/timing-entrytypes-registry#18.
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5 pull requests opened.
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Add Soft Nav entries w3c/timing-entrytypes-registry#25, by @tunetheweb.
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Add visibility-state w3c/timing-entrytypes-registry#24, by @tunetheweb.
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Misc spec edits w3c/timing-entrytypes-registry#23, by @tunetheweb.
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Remove index.html w3c/timing-entrytypes-registry#22, by @tunetheweb.
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Add Container Timing w3c/timing-entrytypes-registry#21, by @tunetheweb.
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6 pull requests merged.
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Add Soft Nav entries w3c/timing-entrytypes-registry#25.
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Misc spec edits w3c/timing-entrytypes-registry#23.
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Add visibility-state w3c/timing-entrytypes-registry#24.
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Remove index.html w3c/timing-entrytypes-registry#22.
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Add Container Timing w3c/timing-entrytypes-registry#21.
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Convert to Bikeshed w3c/timing-entrytypes-registry#20.
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1 pull request closed.
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Export `availableFromTimeline` w3c/timing-entrytypes-registry#2.
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3 pull requests received 5 new comments.
w3c/event-timing
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1 issue opened.
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Add (more) WPT test coverage for synthetic events. w3c/event-timing#171, by @mmocny.
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w3c/resource-timing
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1 pull request opened.
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Add Relation to `PerformanceEntry` w3c/resource-timing#436, by @shubhamg13.
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1 pull request merged.
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Add 'attribute' keyword to IDL attribute dfns for Bikeshed w3c/resource-timing#430.
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1 pull request received 2 new comments.
w3c/navigation-timing
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2 issues received 6 new comments.
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Using navigationStart as a baseline may expose cross-origin timing information w3c/navigation-timing#160 (3 comments by @noamr, @yoavweiss)
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Interaction between cross-document view transitions and Navigation Timing w3c/navigation-timing#217 (3 comments by @mmocny, @noamr, @yoavweiss)
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1 pull request opened.
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Rotate the `obsolete` watermark w3c/navigation-timing#219, by @shubhamg13.
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2 pull requests merged.
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Add 'attribute' keyword to IDL attribute dfns for Bikeshed w3c/navigation-timing#214.
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Switch to newer versions of obsoleted HTTP RFCs w3c/navigation-timing#218.
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1 pull request received 2 new comments.
w3c/long-animation-frames
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1 pull request opened.
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Fix references to window w3c/long-animation-frames#39, by @noamr.
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1 pull request merged.
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Fix references to window w3c/long-animation-frames#39.
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w3c/element-timing
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1 pull request opened.
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Fix broken `PaintTimingMixin/paint timing` reference w3c/element-timing#91, by @shubhamg13.
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1 pull request merged.
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Fix broken `PaintTimingMixin/paint timing` reference w3c/element-timing#91.
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1 pull request received 2 new comments.
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Fix broken `PaintTimingMixin/paint timing` reference w3c/element-timing#91 (2 comments by @shubhamg13, @w3cbot)
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w3c/user-timing
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1 pull request merged.
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Add 'attribute' keyword to IDL attribute dfns for Bikeshed w3c/user-timing#119.
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