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Compress and decompress text using the Gzip algorithm instantly in your browser. Check compression ratios and improve website page load speed for better Google SEO rankings.
Gzip compression is one of the most impactful optimizations you can apply to your website. Based on the DEFLATE algorithm (a combination of LZ77 and Huffman coding), Gzip reduces the size of text-based web files — HTML, CSS, JavaScript, XML, JSON, and SVG — by 60-80% before they're transmitted from your server to visitors' browsers. This directly improves page load speed, reduces bandwidth costs, and boosts SEO rankings through better Core Web Vitals scores.
AddOutputFilterByType DEFLATE text/html text/css application/javascript application/json
.htaccess
gzip on; gzip_types text/html text/css application/javascript;
nginx.conf
compression
While Gzip remains the standard, Brotli (Google's newer algorithm) offers 15-25% better compression. Best practice: enable both. Browsers supporting Brotli will use it automatically; others fall back to Gzip. Brotli requires HTTPS, so ensure you have a valid SSL certificate before enabling it.
Gzip is a file compression method that reduces the size of web files (HTML, CSS, JavaScript, XML, JSON) before sending them to the browser, typically achieving 60-80% size reduction and making websites load significantly faster.
Enabling Gzip reduces page load time by 60-80% for text files, saves server bandwidth, improves Core Web Vitals scores (LCP, FID), and boosts SEO rankings. Google uses page speed as a ranking factor, so faster-loading pages rank higher.
Apache: add mod_deflate directives to .htaccess. Nginx: add gzip on; to nginx.conf. WordPress: use WP Rocket or W3 Total Cache. Most CDNs like Cloudflare enable Gzip by default for all text-based content.
Gzip is most effective for text-based files: HTML, CSS, JavaScript, XML, JSON, and SVG — typically 60-80% compression. It is NOT recommended for already-compressed files like JPEG images, MP4 videos, or ZIP archives.
Brotli is a newer Google algorithm achieving 15-25% better compression than Gzip. Brotli requires HTTPS and modern server support. Best practice: enable both — browsers supporting Brotli use it, others fall back to Gzip automatically.
Yes. Our Gzip tool works entirely in your browser — your data is never uploaded to any server. It is 100% free with no registration, no usage limits, and no hidden charges.
Minify scripts for maximum performance gains.
Compress JPEG, PNG & WebP images for faster loading.
Validate your XML sitemap for Google crawling.
Required for Brotli compression — check SSL status.
Generate structured data for rich snippets.
Validate AMP pages for Google mobile indexing.
