HTML Formatter
Free HTML formatter. Pretty-print and properly indent messy HTML instantly.
How HTML Formatter Works
Parses HTML and re-outputs it with consistent indentation (2 or 4 spaces, configurable), proper line breaks, and normalised attribute spacing. Useful for making minified or CMS-generated HTML readable.
Use Cases
Format html code formatter
Automatically beautify and organize your html code formatter with proper indentation and structure.
Minify html code formatter
Compress your html code formatter by removing unnecessary whitespace and formatting.
Consistency
Ensure consistent formatting standards across your html code formatter.
Copy Formatted
Copy perfectly formatted html code formatter ready for production use.
Frequently Asked Questions
What does an HTML formatter do?
An HTML formatter (also called a prettifier or beautifier) takes messy, minified, or inconsistently indented HTML and outputs it with clean, consistent formatting. Each nested element is indented one level deeper than its parent, making the structure immediately readable.
Does formatting change how the HTML renders in a browser?
No — browsers ignore whitespace between tags (with some exceptions for inline elements). Formatted HTML renders identically to minified HTML. Formatting is purely for human readability and code maintainability.
When should I format HTML?
Before committing to version control (readable diffs), when debugging layout issues (structure becomes visible), when reviewing CMS or email template output, and when inheriting undocumented code from another developer.
Is my data stored?
No.
Can I use this on mobile?
Yes.
About This Tool
Built by the Calcyo team and last updated June 2026. All calculations follow industry-standard methodology. No data leaves your browser — calculations run entirely client-side using JavaScript. If you spot an error in the formula or benchmark data, email us at support@calcyo.xyz.