HTML Minifier & Beautifier
Minify HTML to reduce file size or beautify it for readability — free, instant, 100% browser-based.
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Buy me a coffeeFree HTML Minifier & Beautifier — Instant, No Upload
Texterfly's HTML Minifier & Beautifier processes your HTML entirely in the browser — no upload, no server round-trip, no waiting. Paste any HTML snippet or full page, choose Minify or Beautify, and see the result with exact byte savings in milliseconds.
The minifier removes whitespace between tags, strips HTML comments, shortens boolean attributes, and optionally removes empty attribute values — all while preserving <script>, <style>, and <pre> content verbatim. The beautifier re-indents disorganised or compressed HTML with configurable indent size (2 spaces, 4 spaces, or tab) and inline-element awareness.
Minify vs. Beautify — When to Use Each
⚡ Use Minify when…
- →Deploying HTML to a production server
- →Optimising page load speed and Core Web Vitals
- →Reducing bandwidth costs for high-traffic pages
- →Embedding HTML snippets in JSON or API responses
- →Sending HTML in emails where whitespace adds weight
✨ Use Beautify when…
- →Reading or debugging minified or auto-generated HTML
- →Onboarding into an unfamiliar codebase
- →Reverse-engineering a competitor's page structure
- →Cleaning up CMS-exported or copy-pasted HTML
- →Code review — consistent indentation makes diffs readable
What the Minifier Does
Whitespace collapse
Removes line breaks and extra spaces between HTML tags. Text content is collapsed to single spaces. Before/after stats show exact byte reduction.
Comment removal
Strips <!-- ... --> HTML comments. IE conditional comments (<!--[if IE]>) are preserved since they serve a functional purpose.
Boolean attribute shortening
Converts disabled="disabled", checked="checked", selected="selected" to their shorthand form: disabled, checked, selected.
Empty attribute removal
Removes attributes with empty string values (class="", id="") that add bytes without contributing to rendering.
Raw block preservation
<script>, <style>, and <pre> tag contents are extracted before processing and restored unchanged — only the HTML structure is minified.
IE conditional comments
<!--[if lt IE 9]>...<![endif]--> blocks are left intact even when Remove Comments is enabled, preventing IE compatibility breakage.
Frequently Asked Questions
How much smaller will my HTML be after minification?
Typical savings are 10–30% for well-formatted code. Pages with many comments, verbose inline styles, or lots of whitespace can see 40–50%+ reduction. The stats bar shows exact byte savings and percentage after each run.
Does this minifier touch my JavaScript or CSS?
No. The minifier processes the HTML structure only. Content inside <script> and <style> tags is extracted before processing and restored verbatim — your JS and CSS are untouched.
Will minifying HTML break my page?
For standard HTML, no. The minifier only removes redundant whitespace and optional syntax — the rendered output is identical to the original. <pre> blocks are fully preserved. Test after minifying if your page uses unusual whitespace-dependent rendering.
What indent size should I use when beautifying?
2 spaces is the default in most modern style guides (Google, Airbnb, Prettier). 4 spaces is more readable for deeply nested structures. Tab indentation lets each developer set their own visual width in their editor.
Can I use this to format HTML from a live website?
Yes. Navigate to the page, press Ctrl+U (View Source), select all (Ctrl+A), copy, paste into the input panel, and click Beautify. The full page source will be formatted.
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