HTML Minifier
Nén HTML, bỏ khoảng trắng và comment thừa
HTML Minifier
The HTML Minifier tool compresses your HTML code by stripping unnecessary whitespace, line breaks, and comments to reduce page file size without changing how the page looks or behaves. Smaller HTML payloads mean faster load times, better Core Web Vitals scores, and improved search engine rankings. Use this free online HTML Minifier instantly — no installation or account required.
Benefits
Minifying HTML delivers measurable performance gains for any website or web application:
- Reduces HTML file size, lowering bandwidth usage and server transfer costs.
- Improves page load speed and Lighthouse scores, directly boosting Core Web Vitals metrics like LCP.
- Removes developer comments and redundant whitespace that browsers parse but never display.
- Signals quality and performance to search engines, supporting better SEO outcomes.
Use cases
This tool fits naturally into a wide range of web development and deployment workflows:
- Preparing static HTML pages or email templates before pushing to production.
- Compressing HTML output from a CMS or server-side framework when an automated build step is not in place.
- Quickly testing compression gains before integrating a minification step into a CI/CD pipeline.
- Minifying individual HTML files without configuring Webpack, Gulp, or any build tool locally.
How to use
Getting minified HTML takes just a few seconds:
- Paste your raw HTML into the input box, or upload an HTML file directly.
- Choose your minification options — such as removing comments, collapsing whitespace, or minifying inline CSS and JavaScript.
- Click the Minify button to process your code.
- Copy the minified HTML output or download the optimized file and deploy it straight away.
Frequently asked questions
Will HTML minification break my page layout or functionality? No — the minifier only removes characters that browsers ignore during rendering, so your page structure, styles, and scripts all work exactly as before.
Does the tool also minify inline CSS and JavaScript inside the HTML? Yes, if you enable the corresponding options the tool will compress embedded CSS blocks and inline JavaScript along with the HTML markup itself.
How much file size reduction can I expect? Savings typically range from 5% to 30% depending on how many comments and how much whitespace your source file contains, with auto-generated templates often seeing the largest reductions.
Is HTML5 syntax fully supported? Yes, the HTML Minifier correctly handles HTML5 elements, semantic tags, boolean attributes, and custom data-* attributes without corrupting the output.