Brotli Checker

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About the Brotli Checker

The Brotli Checker asks a server for a small probe URL and reports whether it returns the Brotli-Compressed content-encoding header. Useful when verifying CDN configuration.

How to use it

Enter the URL.
The tool inspects the response and lists supported encodings.

Notes

Brotli support is not universal. Confirm client compatibility before relying on it.

One of the quietest wins in website speed is compression: sending less data for the same page. Brotli is a modern compression algorithm, often more effective than the older gzip, and this checker tests whether a given URL is served with Brotli enabled.

It sends a request announcing Brotli support and reads the headers the server replies with. If the response comes back with Brotli content-encoding, the origin is serving compressed pages; if not, the server is either not configured for it or falling back to another encoding.

How to Use the Brotli Checker

Enter the URL you want to test.
Run the check and read the reported content-encoding.
Use the result to see whether Brotli is live on that origin.

Practical Use Cases

Confirm your own server is delivering Brotli to modern browsers, diagnose why a page is heavier than expected where compression is not applied, and audit how a competitor or partner serves their assets.

How Compression Helps

A text-based page — HTML, CSS, JavaScript — can shrink dramatically with Brotli, which translates directly into faster loads and lower bandwidth over slower connections.

Brotli — common questions

What is Brotli?

Brotli is a compression format developed by Google, generally better at shrinking web text than gzip, and now supported by all major modern browsers.

Is a Brotli response always available?

Only if the server is configured to produce it. Many hosts enable gzip by default but require a setting to add Brotli, which is why the check can report it as absent.