No. Formatting, conversion and preview work happens in your browser.

What should I check before publishing?

Review syntax errors, warnings, rendered previews and minified output before pasting changes into production code.

Developer Tools / Local / No signup

HTML Formatter

Format HTML tags into readable nested markup for snippets and templates.

Run Prettier on HTML while preserving source markup.

Input size

88 B

Output size

Saved

Ready. Run an action to update output.

Privacy: Runs locally in your browser. Your input is not uploaded to ToolsFam servers.

About, use cases, and privacy

HTML Formatter runs Prettier in the browser to normalize nested tags, attributes and text spacing without sending snippets to a server.

The work runs locally in your browser. Use the sample, review errors or warnings, then copy or download the result without signing in.

Formatting preserves markup. Preview-oriented tools sanitize rendered output separately; this formatter is for source cleanup.

Format CSS blocks and declarations for cleaner frontend handoff.

Apply lightweight JavaScript spacing for readable snippets and examples.

Convert Markdown into HTML for docs, CMS previews and publishing workflows.

Convert simple HTML snippets into Markdown for docs and notes.