About this online online HTML formatter
hidevtool HTML formatter tidies markup copied from templates, email builders, or View Source. Paste a document or fragment, then beautify for review or minify for a smaller payload.
Nested tags get consistent indentation; attributes stay on the same elements so you can diff or paste back into your project.
Online HTML formatter capabilities
Pretty-print HTML
Format expands minified or messy markup into indented lines—headings, lists, tables, and inline SVG become easier to scan. Works on full pages or snippets when tags are balanced.
Minify HTML
Minify collapses whitespace and removes HTML comments while keeping structure and required tags. Syntax problems surface as errors instead of broken output.
Common use cases
How do I format HTML online?
Paste your markup into the input box and click Format. The tool indents nested tags and line-breaks attributes for easier reading.
How do I beautify minified HTML from a template?
Paste the one-line HTML from a CMS export or build step and run Format. Indentation is restored while tags and text content stay the same.
How do I minify HTML for production?
Click Minify after pasting valid HTML. Extra spaces and comments are removed so you get a compact document to copy.
Frequently asked questions
- How do I format HTML online?
- Paste your markup into the input box and click Format. The tool indents nested tags and line-breaks attributes for easier reading.
- How do I beautify minified HTML from a template?
- Paste the one-line HTML from a CMS export or build step and run Format. Indentation is restored while tags and text content stay the same.
- How do I minify HTML for production?
- Click Minify after pasting valid HTML. Extra spaces and comments are removed so you get a compact document to copy.
- What is the difference between formatting and minifying HTML?
- Formatting expands markup for humans with breaks and indent. Minifying compacts the same valid HTML to fewer characters.
- Why does HTML fail to minify?
- The minifier could not parse the markup—often an unclosed tag, bad attribute quote, or truncated paste. Fix the snippet or format first to locate the issue.