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HTML Formatter Guide — Beautify Markup for Review

Indent HTML templates and CMS fragments for readable diffs before HTML-to-PDF export.

Published June 1, 2025 · 1 min read

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3 uses per day · 200 MB · TLS encrypted · auto-delete

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Beautify HTML markup

Minified templates, copied CMS fragments, and email HTML are hard to review. The HTML formatter indents tags and attributes for readable diffs before you commit or hand off to a designer.

Works well with

  • Static email templates before HTML to PDF export
  • Legacy landing pages migrated to a new CMS
  • Pairing with text comparer for regression checks
Ready to try it?

3 uses per day · 200 MB · TLS encrypted · auto-delete

Use free tool →

Frequently asked questions

How do I beautify HTML online?

Paste HTML into the formatter tool.

Will formatting break my template?

It only changes whitespace — verify in staging.

Can I diff HTML before deploy?

Yes — use text comparer before/after.

Sources & references

Primary references used when researching and fact-checking this guide. See our editorial methodology.

  1. — iText Group
    HTML/CSS to PDF conversion engine used in server-side Java and .NET stacks.