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JavaScript & Browser

Browser Feature Checker

Look up browser support for a web platform feature and check it against the browsers you actually target. Everything runs locally — no network requests, no telemetry.

Runs in your browser Snapshot 2026.09

Feature

local data

Pick a common feature:

Browser support

Not checked

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Browser Status Since Notes

Your target browsers

minimum versions

How it works

Support data is a curated snapshot of MDN browser compatibility data bundled with this page. Nothing is fetched at runtime: the feature list, the version numbers and the target comparison all run locally in your browser. A version such as Safari 15.4 means the feature is available from that version onward. The separate detection badge runs a live check against the browser you are using right now when the feature exposes one.

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