Can I Use Browser Support — free online tool

Search open browser-support tables before adopting CSS grid, WebP, or a new JavaScript API in production.

When to use Can I Use Browser Support

Check whether CSS/JS features are safe for your supported browser matrix before adopting them.

Saves opening a terminal or a separate DNS client for one-off checks.

What Can I Use Browser Support does not do

Search snapshot of public Can I Use-style data. Not a live MDN compatibility table for every nightly browser.

How to use Can I Use Browser Support

Type a CSS property, HTML element, or API name into the Can I Use search field.
Wait for the open dataset to load matches in your browser.
Open a feature to read global support percentages and browser notes.
Follow the external caniuse.com link from results when you need full detail.

Practical tips

Check support before adopting a feature so you know whether you need a fallback.
Look at the versions your real audience uses, not just the global percentage.
Pair a "partial support" result with a quick test in the specific browser that worries you.

Example

Search “css grid” to see whether your supported browsers cover display:grid.

Related tools on Webtoolshop

HTTP Status Checker — Confirm a feature-detect script URL still returns 200.

Limitations

Search depends on bundled/open data. Brand-new features may be missing until we refresh the dataset.

Privacy & data

Requests go from your browser to Webtoolshop’s own API (or self-hosted datasets). We do not sell that input. Still avoid secrets and internal-only hostnames.

Frequently asked questions about Can I Use Browser Support

What does the Can I Use Browser Support not do?

Search snapshot of public Can I Use-style data. Not a live MDN compatibility table for every nightly browser.

Give me a concrete example for the Can I Use Browser Support.

Search “css grid” to see whether your supported browsers cover display:grid.

Why might the Can I Use Browser Support show a different result than my terminal?

Public APIs use their own caches, rate limits, and data sources. VPNs, ad blockers, and corporate DNS can also change what you see compared with a server-side dig or whois command.

Who sees what I type into the Can I Use Browser Support?