HTML Formatter

An online HTML formatter that helps developers quickly clean, indent, and standardize HTML code for readability and consistency.

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640+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how HTML Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}
Computed Result { "id": 1, "status": "active", "roles": [ "admin" ] }
Execution Mode Client-Side In-Browser JS
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About This Tool

The tool formats HTML by applying consistent indentation, line breaks, and attribute wrapping to improve readability and maintenance. It parses input HTML into a structural model, applies configurable formatting rules, and outputs a clean, standards-compliant snippet. Users include developers, content editors, and templating teams who need predictable markup for templates, CMS content, or component libraries. Unique value comes from determinism and configurability: you can set indentation (2 or 4 spaces), enable or disable attribute wrapping, and choose whether to sort attributes or preserve existing order. Core features include robust HTML parsing, idempotent formatting (reformatting the same input yields the same output), and safe handling of common constructs like void elements and pre blocks. The tool supports working with large template files and repeated fragments, ensuring uniform style across teams and repositories. Typical use cases include formatting CMS templates, cleaning up pasted snippets from design tools, standardizing code before reviews, and preparing HTML for deployment or documentation. It is designed to be non-destructive to content while enforcing a defined style, making it valuable for teams migrating to a shared coding standard and for individuals seeking consistent, readable markup.

How to Use

  1. Provide inputs: paste the HTML to be formatted.
  2. Choose options: indentation size (2 or 4 spaces), attribute wrapping, and line length rules.
  3. Run formatting: apply styling and consistency rules to the input HTML.
  4. Review outputs: verify structure, indentation, and attribute order meet standards.
  5. Copy or export: copy the formatted HTML or download a file for deployment.
How to use best html formatter online

Frequently Asked Questions

Find Quick Answers

What input formats does the tool accept?
The tool accepts raw HTML as a string. It can handle snippets, templates, and full documents. Optional inputs include formatting preferences such as indentation size and attribute wrapping. It does not validate external dependencies or CSS content.
Does formatting modify script or style blocks?
Formatting focuses on HTML structure and attributes. It preserves the content of script and style blocks exactly as-is while formatting surrounding markup to ensure consistent indentation and line breaks.
Can the output be reused in CI or pipelines?
Yes. The tool outputs a clean HTML snippet that can be copied to clipboard or exported to a file. It is deterministic, making it suitable for integration into code review processes or automated formatting steps in pipelines.

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