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HTML & CSS Minifier

Compress your HTML and CSS code instantly — remove comments, whitespace, and redundant characters to shrink file sizes and accelerate page loads.

100% FreeNo Sign-upRuns in BrowserPrivacy First
Input
Minified Output
Minified output will appear here after you click "Minify Code"…

Why Minify HTML and CSS?

When you write HTML and CSS, you add whitespace, indentation, comments, and newlines to keep the code readable. These characters are necessary for developers but completely invisible to browsers. Every unnecessary byte still has to travel across the network, consuming bandwidth and adding latency.

Minification removes these redundant characters before deployment, resulting in smaller file sizes that download faster — especially on mobile networks and for users in regions with slower connections. The functional behaviour of your page remains 100% identical after minification.

  • •Reduced file sizes: Typical HTML minification achieves 10–30% savings; CSS often 20–40%.
  • •Faster Time to First Byte (TTFB): Smaller files transfer faster, reducing the time until the browser can start rendering.
  • •Lower bandwidth costs: On CDNs and cloud hosting, bandwidth is billed per GB — smaller assets directly cut costs.
  • •Better cache efficiency: Smaller files fit more easily in browser and CDN caches.

How Does Minification Improve Page Speed?

Page speed is a confirmed Google ranking factor and a major contributor to Core Web Vitals scores — particularly Largest Contentful Paint (LCP) and First Contentful Paint (FCP). Here is the direct chain of improvements:

Render-Blocking CSS

CSS is render-blocking by default — the browser cannot paint anything until all CSS files in the <head> have downloaded and parsed. A minified stylesheet that is 35 KB instead of 50 KB downloads ~30% faster, moving your FCP and LCP milestones closer to zero.

HTML Parse Time

The HTML document is the entry point for everything. Every millisecond the HTML parser spends reading whitespace is time spent not discovering linked resources (CSS, JS, images). Minified HTML surfaces resource hints and <link> tags faster, enabling earlier parallel downloads.

Gzip / Brotli Compression Synergy

Minification works synergistically with server-side compression (Gzip/Brotli). Minified files — with their repetitive structure — compress even more efficiently than formatted code. The result is typically 40–70% smaller payloads compared to raw, formatted source files.