HTML Beautifier Free Online Tool 2026

Last updated March 22, 2026

What HTML Beautification Does

HTML beautification (also called pretty-printing) reformats HTML code to be more readable by adding consistent indentation, line breaks, and spacing. It's the opposite of minification. Beautified HTML is easier to read, debug, and maintain — especially when working with HTML generated by tools, CMS exports, or copied from browser DevTools.

Beautification Rules

• Block elements (div, p, section, article) get their own lines with indented children.
• Inline elements (span, a, strong, em) stay on the same line as their content.
• Void elements (img, br, input, meta) are self-closing and don't indent.
• Pre/code blocks preserve their whitespace exactly — beautifiers should not reformat content inside <pre>.

Using Prettier for HTML

# Install Prettier
npm install -D prettier

# Format a single HTML file
npx prettier --write index.html

# Format all HTML files
npx prettier --write "**/*.html"

# Check without modifying (CI)
npx prettier --check "**/*.html"

Prettier HTML Configuration

// .prettierrc
{
  "printWidth": 100,
  "tabWidth": 2,
  "useTabs": false,
  "htmlWhitespaceSensitivity": "css",
  "bracketSameLine": false,
  "singleAttributePerLine": false
}