HTML Formatter & Beautifier

How to Format or Minify HTML

1. Paste your HTML code into the input field.
2. Select Format / Beautify to add consistent indentation, or Minify to compress it.
3. Set your preferred indent size (2 or 4 spaces) for the formatted output.
4. Click the button. Copy or download the result.

The formatter handles complete HTML documents, partial HTML fragments, and HTML embedded in template files. It preserves the content of <script> and <style> blocks.

Why Formatted HTML Matters

Well-indented HTML is significantly easier to read, review, and debug. Compare these two versions of the same markup:

Unformatted (hard to read):

<div class="card"><h2>Title</h2><p>Content here.</p><a href="/link">Read more</a></div>

Formatted (clear structure):

<div class="card">
  <h2>Title</h2>
  <p>Content here.</p>
  <a href="/link">Read more</a>
</div>

The structure, nesting relationships, and potential issues are immediately visible in the formatted version.

Common Use Cases

• Reading minified HTML source — websites often serve minified HTML. Copy-paste the source into this formatter to make it readable.
• Debugging template engines — Jinja2, Handlebars, and similar templates can produce oddly-formatted output. Formatting helps spot nesting errors.
• Code review — standardized formatting makes HTML changes easier to diff and review in pull requests.
• Legacy codebase cleanup — old HTML files often have inconsistent indentation from different editors and eras. Formatting normalizes them.
• Email HTML — email HTML templates are often hand-written and tangled. Formatting makes them manageable.
• CMS output — content management systems sometimes produce poorly formatted HTML. This tool cleans it up for inspection.

HTML Minification: What Gets Removed

When you minify HTML, these are removed:

• Whitespace between tags (spaces, tabs, newlines not inside text content)
• HTML comments (<!-- like this -->)
• Optional closing tags that browsers infer automatically (configurable)
• Redundant attribute quotes and unnecessary attribute values

HTML minification typically achieves 5–15% size reduction on its own. Combined with gzip server compression, the gains stack. However, modern HTTP/2 and compression means the practical impact of HTML minification is smaller than CSS or JavaScript minification — prioritize those first.

HTML and Web Development Workflow

HTML formatting is part of a web development quality workflow:

• Minify the CSS that accompanies your HTML
• Convert Markdown to HTML — format the output for clean code
• Validate JSON embedded in HTML data attributes or script tags
• Convert HTML to PDF after formatting for clean document output

Related Tools

• Extracted data from an HTML table? Use CSV to JSON to convert the values to structured JSON. → convert HTML table data to JSON
• Parsing HTML for data scraping? Export the structured results as CSV for analysis. → export parsed HTML data to CSV
• Embedding HTML in a URL parameter? URL-encode it to prevent parsing failures. → URL-encode HTML content for embedding
• Migrating HTML parsing logic from VB.NET? Convert the syntax to C# instantly. → convert VB.NET HTML parsing code to C#