CPU compute pressure

The PressureObserver API monitors CPU load, allowing you to adjust workloads in response to available computing resources. Also known as the Compute Pressure API.

Baseline Status: This feature is currently Limited and is missing in at least one major browser engine.

Desktop Browser Engine Support

Google Chrome

125

Supported

Mozilla Firefox

—

Unsupported

Apple Safari

—

Unsupported

Microsoft Edge

125

Supported

Mobile Browser Engine Support

Chrome Android

—

Firefox Android

—

Safari iOS

—

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.PressureObserver ↗ api.PressureObserver.PressureObserver ↗ api.PressureObserver.disconnect ↗ api.PressureObserver.knownSources_static ↗ api.PressureObserver.observe ↗ api.PressureObserver.takeRecords ↗ api.PressureObserver.unobserve ↗ api.PressureRecord ↗ api.PressureRecord.source ↗ api.PressureRecord.state ↗ api.PressureRecord.time ↗ api.PressureRecord.toJSON ↗ html.elements.iframe.allow.compute-pressure ↗ http.headers.Permissions-Policy.compute-pressure ↗