HTML Prettifier
Format and beautify HTML code with customizable indentation. All processing happens in your browser.
Smart Indentation
Properly indents nested HTML elements with your choice of 2 or 4 spaces per level.
Tag Recognition
Handles void elements (img, br, input), inline elements, comments, and self-closing tags correctly.
Instant Formatting
Processes HTML entirely in your browser with zero server round-trips. Works offline too.
How to Use the HTML Prettifier
- 1. Paste your minified or messy HTML into the Input panel.
- 2. Choose your preferred indentation size (2 or 4 spaces).
- 3. Click Prettify to format the HTML with proper indentation.
- 4. Click Copy to copy the formatted output to your clipboard.
Frequently Asked Questions
What is an HTML prettifier?
An HTML prettifier (or HTML formatter) takes compressed or poorly indented HTML and reformats it with consistent indentation and line breaks, making the code much easier to read and maintain.
Does prettifying change how the HTML renders?
No. Adding whitespace and indentation to HTML does not affect how browsers render the page. The visual output remains identical; only the source code readability is improved.
Can I use this with HTML fragments?
Yes. This tool works with both complete HTML documents and partial HTML fragments. You do not need to include DOCTYPE, html, or body tags.
Is my HTML sent to a server?
No. All formatting is performed locally in your browser using JavaScript. Your HTML code never leaves your device and no data is transmitted to any server.