Brotli Checker

About Our Brotli Compression Checker Tool

The Brotli Compression Checker tool helps you find out whether a website is using Brotli compression — the modern, high-performance compression algorithm developed by Google. Brotli significantly reduces the size of website assets such as HTML, CSS, and JavaScript, resulting in faster loading times, better performance scores, and improved user experience. This tool instantly checks if Brotli is enabled on your server and shows how efficiently your website is compressed.

What This Tool Can Detect

Our Brotli Checker analyzes the response headers and content encoding of any URL to confirm whether the server is serving Brotli-compressed content. It also provides additional performance details such as:

• Brotli Support Status: Confirms if Brotli compression is enabled.
• Content-Encoding Header: Checks for br, gzip, or no compression.
• Brotli vs GZIP Detection: Identifies which compression method the server prefers.
• Compression Type: Detects whether static or dynamic Brotli compression is used.
• Response Size Details: Shows how much data is being compressed.
• Server Information: Reveals if the server uses platforms like Nginx, Apache, Cloudflare, etc.

Why Brotli Compression Matters

Brotli is currently the fastest and most efficient compression standard for the web. It outperforms GZIP in most scenarios and is highly recommended for improving page load speed, SEO, and bandwidth efficiency. Enabling Brotli can significantly improve Core Web Vitals, especially Largest Contentful Paint (LCP) and First Contentful Paint (FCP).

• Reduces file sizes more effectively than GZIP.
• Improves page loading speed and user experience.
• Boosts SEO by increasing overall performance.
• Saves bandwidth on both server and client side.
• Enhances mobile performance on slower networks.

Common Issues You Can Detect

Using the Brotli Checker, you can easily spot performance or configuration issues such as:

• Brotli disabled on server or CDN.
• Only GZIP enabled while Brotli is supported but not active.
• Incorrect Brotli configuration on Nginx or Apache.
• CDN caching Brotli incorrectly or not at all.
• Compression missing for certain file types.
• Mixed compression causing inconsistent performance.

How Brotli Checking Works

When you enter a URL, the tool sends a request and inspects the HTTP response headers for Content-Encoding: br. If Brotli is enabled, the server will respond with Brotli-compressed content. If not, the tool will indicate whether GZIP or no compression is used, allowing you to easily diagnose the site’s compression setup.

Advanced Insights

Developers and performance experts can use Brotli compression data to configure CDNs, enhance caching behavior, optimize server load, and improve Core Web Vitals. Brotli is especially effective for text-based files such as HTML, CSS, and JavaScript — the core of modern performance optimization.

Final Notes

The Brotli Checker is an essential tool for optimizing website performance and ensuring your site uses modern compression technologies. Whether you're auditing speed, comparing servers, or troubleshooting compression issues, this tool gives you instant and reliable Brotli insights.