BASELINE NowYouCanUse.com

Limited Availability

Summarizer

The Summarizer API uses an on-device language model to summarize text.

Baseline Status: This feature is currently Limited (not yet Baseline). Latest engine implementation shipped on Jun 26, 2025.

Desktop Browser Engine Support

Google Chrome

138

Supported

Mozilla Firefox

—

Unsupported

Apple Safari

—

Unsupported

Microsoft Edge

138

Supported

Mobile Browser Engine Support

Chrome Android

—

Firefox Android

—

Safari iOS

—

Specifications and References

Specification ↗ Feature XML ↗

MDN Browser Compat Data Keys:

api.Summarizer ↗ api.Summarizer.availability_static ↗ api.Summarizer.create_static ↗ api.Summarizer.destroy ↗ api.Summarizer.expectedContextLanguages ↗ api.Summarizer.expectedInputLanguages ↗ api.Summarizer.format ↗ api.Summarizer.inputQuota ↗ api.Summarizer.length ↗ api.Summarizer.measureInputUsage ↗ api.Summarizer.outputLanguage ↗ api.Summarizer.sharedContext ↗ api.Summarizer.summarize ↗ api.Summarizer.summarizeStreaming ↗ api.Summarizer.type ↗ http.headers.Permissions-Policy.summarizer ↗

id: summarizer