Intent to Experiment: CPU Performance API

[Chromestatus]

Contact emails

niko...@chromium.org

Explainer

https://github.com/WICG/cpu-performance

Specification

https://wicg.github.io/cpu-performance

Summary

Expose some information about how powerful the user device is. This API targets web applications that will use this information to provide an improved user experience, possibly in combination with the Compute Pressure API, which provides information about the user device’s CPU pressure/utilization and allows applications to react to changes in CPU pressure.

Blink component

Blink>PerformanceAPIs

Web Feature ID

Missing feature

TAG review

https://github.com/w3ctag/design-reviews/issues/1198 The specification is ready for review, so the above is not an "early design" review.

TAG review status

Pending

Origin Trial documentation link

https://github.com/WICG/cpu-performance

Risks

Interoperability and Compatibility

No information provided

Gecko: No signal (https://github.com/mozilla/standards-positions/issues/1364)

WebKit: No signal (https://github.com/WebKit/standards-positions/issues/622)

Web developers: Positive

Other signals: Adobe: https://github.com/WICG/cpu-performance/issues/6 Figma: https://github.com/WICG/proposals/issues/253#issuecomment-3719833708

WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it has potentially high risk for Android WebView-based applications?

No information provided

Goals for experimentation

No information provided

Ongoing technical constraints

None.

Debuggability

No information provided

Will this feature be supported on all six Blink platforms (Windows, Mac, Linux, ChromeOS, Android, and Android WebView)?

Yes

Is this feature fully tested by web-platform-tests?

No

Flag name on about://flags

No information provided

Finch feature name

No information provided

Non-finch justification

No information provided

Requires code in //chrome?

True

Tracking bug

https://issues.chromium.org/449760252

Estimated milestones

Origin trial desktop first	146
Origin trial desktop last	147
Origin trial Android first	146
Origin trial Android last	147
Origin trial WebView first	146
Origin trial WebView last	147

Link to entry on the Chrome Platform Status

https://chromestatus.com/feature/5189864286978048?gate=5098807842963456

Links to previous Intent discussions

Intent to Prototype: https://groups.google.com/a/chromium.org/d/msgid/blink-dev/CAMHN%3DHydj6Q7pz6i_y3j1ON20a270NFGx%2BKD11Q3VdfTXvtCDg%40mail.gmail.com

This intent message was generated by Chrome Platform Status.

[Mike Taylor]

To confirm: you're requesting to run an OT for only 2 milestones? 146 & 147?

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[Mike Taylor]

LGTM to experiment from 146 to 151 inclusive.

On 3/6/26 1:49 p.m., Nikos Papaspyrou wrote:

Hello Mike,

I just changed the chromestatus entry for the standard period of 6 milestones (M146 to M151).

Thanks for reaching out!

Nikos.

Nikolaos Papaspyrou

Software Engineer

niko...@google.com

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[Nikos Papaspyrou]

Hello Mike,

I just changed the chromestatus entry for the standard period of 6 milestones (M146 to M151).

Thanks for reaching out!

Nikos.

On Fri, Mar 6, 2026 at 6:20 PM Mike Taylor <mike...@chromium.org> wrote: