DT Dev Tools

HTML Beautifier

Beautify or compact HTML, CSS and JavaScript snippets in your browser using js-beautify.

🔒 Runs entirely in your browser — nothing is uploaded

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What HTML Beautifier does

HTML Beautifier formats HTML, CSS, and JavaScript snippets with js-beautify so minified or generated front-end code becomes easier to read. It is useful when inspecting a production response, reviewing copied examples, debugging inline styles, cleaning up a small script, or making a snippet readable enough to include in a bug report or documentation note.

This page is designed for everyday developer work: quick checks while debugging, preparing small examples for documentation, and cleaning up data before pasting it into an editor, terminal, issue, or test fixture. The interface keeps the input, controls, output, and status message close together so the result is easy to verify before you copy it.

Private browser-based workflow

All processing happens with in-browser JavaScript. The tool does not upload your text, tokens, URLs, snippets, or generated values to a server, and it does not require an account. That privacy model is important because small utilities often receive real API responses, configuration samples, logs, authentication data, or customer-shaped examples during troubleshooting. Keeping the work local reduces risk and also makes the tool feel instant because there is no network round trip.

Practical tips

The Minify button performs lightweight whitespace compaction for quick snippets; it is not a replacement for a production bundler or dedicated minifier. Use the beautifier when readability matters and the compact option when you only need to reduce obvious whitespace before sharing a small sample. Keep using your project build pipeline for deployable assets.

Always review transformed output before relying on it in production. Browser utilities are excellent for inspection and preparation, but they cannot understand every project convention or security requirement. If the result will be committed, shared publicly, or used in an authentication flow, double-check that it contains no secrets and that it matches the format expected by your application.

How to use

  1. Choose languageSelect HTML, CSS, or JavaScript.
  2. Paste sourceAdd the snippet to format or compact.
  3. Copy resultUse the output in notes, examples, or local code.

Frequently asked questions

Which library formats code?
The beautify action uses js-beautify.
Is minify production-grade?
No. It is simple snippet compaction.
Is code uploaded?
No. Formatting runs locally.
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