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Browser Info Checker

Your browser, engine, platform, languages and what it supports.

Developer Tools Reviews Free · no sign-up

Read from your browser as the page renders. None of it is transmitted, logged or stored.

Quick Tool Overview

The Browser Info Checker tests features directly rather than inferring them from a version number, because every browser lies in its user agent for compatibility — and it shows both, so you can see exactly where the two disagree.

What it does
Reports your browser and what it supports
You give it
Nothing — it reads the browser
You get back
Browser, engine, platform and a feature list
Best for
Bug reports and compatibility checks
Developer Tools Free, unlimited use No sign-up Runs in your browser

About the Browser Info Checker

What your browser reports about itself: the name and version, the rendering engine underneath, the platform, the languages you accept, your timezone, and a feature check covering the APIs a modern site depends on.

The feature list is the useful half. A user agent string is a poor way to decide what a browser can do — every browser lies in it for compatibility, Chrome claims to be Safari, Safari claims to be Gecko, and the version numbers have been frozen or capped repeatedly. Testing for the capability directly is both accurate and future-proof, and this page shows both so you can see where the two disagree. Everything is read in your browser and displayed here; none of it is transmitted.

Key features of the Browser Info Checker

Capabilities, not versions

Each API tested directly, which is accurate today and still accurate in browsers that do not exist yet.

The user agent decoded

Browser, version, engine and platform pulled out of a string that deliberately claims to be four other browsers.

Client Hints read

Where the browser exposes them, giving the true major version that the frozen user agent string no longer carries.

Locale and timezone

Languages, resolved timezone and the current offset, all of which affect how dates render.

A copyable report

The whole thing as plain text, for pasting into a bug report.

How to use the Browser Info Checker

  1. 1

    Open the page

    Everything is read immediately, with no permission prompt.

  2. 2

    Check the parsed values

    Browser, version, engine and platform, read out of the user agent.

  3. 3

    Read the feature list

    Each API tested directly rather than inferred from the version.

  4. 4

    Copy the report

    The whole thing as text, for a bug report.

Frequently asked questions

Historical compatibility. Every browser includes the tokens of its predecessors so that old server-side sniffing keeps working, which is why Chrome claims to be Mozilla, Safari and Gecko all at once.

Reviews of the Browser Info Checker

What people who use the Browser Info Checker think of it. Reviews come from visitors and are posted as written.

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