Should I use tabs or spaces in documentation HTML?

Always use spaces (not tabs) for HTML in documentation. Tabs render differently in different environments, while spaces always look the same.

What indentation width is standard for HTML documentation?

Two spaces is the most common standard for documentation HTML. It keeps nested code readable without pushing deeply nested elements too far right.

Browse tools

Free · Fast · Privacy-first

Format HTML for Documentation

Documentation requires clean, consistently formatted HTML examples that readers can understand and copy accurately. FixTools formats your HTML to publication-ready standards — perfect for API docs, tutorials, component libraries, and technical blogs.

⚡ Use Tool Now How it works

Cost: Free forever
Sign-up: Not required
Processing: In your browser
Privacy: Files stay local

⚡

Publication-ready HTML formatting

🔒

4-space indent option for documentation clarity

✨

Preserves comments for annotated examples

HTML Tool

HTML Formatter

All processing happens in your browser — your files are never uploaded to any server.

🚀Open HTML Formatter

100% Free · No account · Works on any device

How to use this tool

💡

Paste your HTML example and format. The output is clean, consistently indented, and ready to paste into documentation, markdown files, or code blocks.

How It Works

Step-by-step guide to format html for documentation:

1
Add comments to your HTML
Optionally add HTML comments to annotate key sections before formatting.
2
Paste and format
Paste your HTML example and click Format.
3
Choose indent size
Select 4-space for documentation or 2-space to match your project convention.
4
Copy into documentation
Copy the formatted HTML and paste it into your documentation tool, markdown file, or blog post code block.

Real-world examples

Common situations where this approach makes a real difference:

Writing HTML examples for a component library docs site

Component documentation needs example code that is both syntactically correct and readable. Format each example before adding it to the docs.

Creating tutorial HTML snippets for a blog post

Technical blog posts with messy code examples lose credibility. Format all code snippets before publishing to signal quality and attention to detail.

Preparing HTML for a README on GitHub

README files with code blocks benefit from consistently formatted HTML. Format your examples to ensure they render correctly in GitHub's markdown preview.

When to use this guide

Use this when preparing HTML code examples for inclusion in documentation, tutorials, README files, or any technical writing where code quality reflects credibility.

Pro tips

Get better results with these expert suggestions:

Use 4-space indent for documentation examples

Documentation HTML examples benefit from 4-space indentation because it makes nesting relationships more obvious to readers who are learning.

Add annotations before formatting

Add HTML comments to explain key parts of your example before formatting. The formatter preserves comments and positions them on their own lines for clarity.

Test your examples before publishing

After formatting, paste the HTML example into a browser to verify it renders as expected. Documentation errors frustrate readers and erode trust.