Brotli Checker

What is Brotli Compression?

Brotli is a modern compression algorithm developed by Google that reduces the size of web content transferred between servers and browsers. It typically achieves 15-25% better compression ratios than gzip, resulting in faster page loads and reduced bandwidth usage. Our Brotli Checker tool tests whether a website has Brotli compression enabled on its server.

Brotli vs Gzip Comparison

• Better compression ratios — Brotli produces smaller files than gzip at equivalent compression levels, especially for text-based assets like HTML, CSS, and JavaScript
• Predefined dictionary — Brotli includes a built-in dictionary of common web content patterns, giving it an advantage for compressing typical web pages
• Wide browser support — All modern browsers support Brotli over HTTPS connections, making it safe to deploy alongside gzip as a fallback
• Configurable compression levels — Brotli supports levels 0-11, allowing you to balance compression ratio against CPU usage for your specific needs

Why Check for Brotli?

• Performance optimization — Enabling Brotli can reduce transfer sizes by 15-25% compared to gzip, directly improving page load times
• Bandwidth savings — Smaller transferred files mean lower bandwidth costs, especially important for high-traffic websites
• SEO benefits — Faster page loads contribute to better Core Web Vitals scores, which are a Google ranking factor
• User experience — Reduced transfer sizes are particularly beneficial for users on slower mobile connections