Browser/CSS/JS Compatibility Checker

Search a curated list of ~45 common CSS properties and JavaScript/Web APIs (Flexbox, Grid, :has(), Container Queries, Fetch, WebSockets, IndexedDB, and more) and see which currently-relevant Chrome/Firefox/Safari/Edge versions support them, using real support data bundled from caniuse-lite and browserslist's own "last 5 versions" browser lists.

Search for a CSS property or JavaScript/Web API below to see which browser versions support it, using real support data bundled from caniuse-lite. "Currently relevant" versions for each browser are picked by browserslist (last 5 versions), so this won't show ancient browser releases.
Search or pick a CSS property or JavaScript API above to see its browser support.

Support data is a snapshot bundled from the caniuse-lite npm package at build time — it is not fetched live from caniuse.com, so it reflects that package version's data, not necessarily this exact minute. "Latest" versions come from browserslist's own current browser list, not a hardcoded version number.

Browser/CSS/JS Compatibility Checker

Search a curated list of ~45 common CSS properties and JavaScript/Web APIs (Flexbox, Grid, :has(), Container Queries, Fetch, WebSockets, IndexedDB, and more) and see which currently-relevant Chrome/Firefox/Safari/Edge versions support them, using real support data bundled from caniuse-lite and browserslist's own "last 5 versions" browser lists.

Common uses

  • Check which browsers support the :has() selector
  • See when Container Queries became supported
  • Check Fetch API browser support
  • Compare CSS Grid support across current browser versions

Also searched as

  • browser support for :has() selector
  • container queries browser support
  • can i use css grid support
  • fetch api browser support
  • which browsers support indexeddb
  • css feature browser compatibility checker
  • websocket browser support versions
  • flexbox browser support current versions
  • check chrome firefox safari edge support for css property

Frequently asked questions

Which browsers support the :has() selector?

Search for it in the Compatibility Checker to see the Chrome, Firefox, Safari and Edge versions that support it.

Where does the support data come from?

It is bundled from caniuse-lite and browserslist's last 5 versions lists.

How many features are covered?

A curated list of about 45 common CSS properties and JavaScript/Web APIs, not the full caniuse database.

Is my data uploaded to a server?

No. This tool runs entirely in your browser — your input is processed locally on your device and is never uploaded or stored on a server.