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HTML Formatter

Format HTML and embedded script or style blocks locally with Prettier's HTML parser.

Free to use Your source stays in this browser and is never uploaded to Lucaden by this tool.

Loading tool workspace…

How it works

Complete the job in three clear steps

  1. Add source code or markup to the local workspace.
  2. Choose the relevant settings and create consistently formatted source.
  3. Review the result carefully, then copy or download it before leaving the page.

Important

Check the result before relying on it

Review generated output before using it in production. Formatters and converters can validate structure, but they cannot understand every application-specific rule or guarantee that transformed content has the intended meaning.

Practical details

What this Lucaden tool does

Format HTML and embedded script or style blocks locally with Prettier's HTML parser.

Formatting does not sanitize markup or guarantee browser rendering. Do not run untrusted HTML, and test the result in its intended environment.

Lucaden supplies the interface and focused workflow while preserving upstream attribution and license notices.

Included capabilities

  • HTML parsing
  • Embedded CSS and JavaScript support
  • Attribute wrapping
  • Downloadable HTML output

Useful for

  • Clean templates
  • Format copied markup
  • Review generated HTML
  • Prepare email or CMS snippets

Questions

About this tool

Does Lucaden upload my source?

No. The pinned open-source runtime executes in temporary browser memory, and this tool has no upload step.

What should I verify?

Formatting does not sanitize markup or guarantee browser rendering. Do not run untrusted HTML, and test the result in its intended environment.

Which open-source project powers this tool?

The implementation uses Prettier (MIT runtime 3.9.6). Upstream projects retain their original names, copyrights, and licenses.

Keep going

Related Lucaden tools

Regex testerTest JavaScript regular expressions, flags, capture groups, and replacements against sample text.Cron parserValidate a five-field cron expression and translate it into a readable schedule description.

Open-source foundations

Built transparently

Lucaden documents its standards sources, architectural references, and permissive runtime dependencies while keeping this workspace consistent with the Lucaden interface.

PrettierMIT runtime 3.9.6 sourceThird-party noticesLicenses and attribution