Brotli Compression Checker & Content Encoding Test

Our Brotli checker detects whether a website serves content compressed with the Brotli algorithm, Google next-generation compression technology that reduces file sizes significantly more than the widely used gzip. Websites enabling Brotli compression typically see HTML, CSS, and JavaScript files shrink 14 to 26 percent smaller than gzip equivalents, directly improving First Contentful Paint and Largest Contentful Paint metrics that influence both search rankings and user experience. Performance engineers optimizing web applications use this checker to verify that Brotli configuration deployed correctly across all origin servers and CDN edge nodes, as misconfigurations can silently fall back to gzip or uncompressed delivery. SEO consultants auditing client sites include Brotli detection in technical analysis because compression efficiency directly impacts page speed scores in Lighthouse and Google PageSpeed Insights, which increasingly influence search result positioning. DevOps engineers configuring Nginx or Apache servers install Brotli modules and use this checker to confirm that the Accept-Encoding negotiation successfully selects Brotli when clients support it. CDN evaluation processes include Brotli support verification, as leading providers like Cloudflare, Fastly, and Akamai offer Brotli but some require explicit activation rather than enabling it by default. Competitor technical analysis includes Brotli checking to understand whether rival websites leverage modern compression for performance advantages that could explain ranking or conversion differences. The checker sends a request with Brotli in the Accept-Encoding header and examines the Content-Encoding response to determine whether the server successfully compressed the response with Brotli. All tests are processed through server-side requests with privacy-focused design that does not log your specific URLs. Simply enter any website address to immediately confirm whether Brotli compression actively serves content. Use this detection tool for performance audits, SEO technical analysis, server configuration verification, CDN evaluation, and competitor benchmarking.