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

Status

Limited availability

This feature received a negative standards position from at least one browser vendor. It's very unlikely to ever become Baseline in this current form.

MDN documentation

Summarizer API

Specifications

Writing Assistance APIs, from Web Machine Learning Community Group (W3C).

Browser support

Chrome 138 Released on 2025-06-24
Chrome Android ❌
Edge ❌
Firefox ❌ Vendor position : negative
Firefox for Android ❌ Vendor position : negative
Safari ❌ Vendor position : unknown
Safari on iOS ❌ Vendor position : unknown

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