Why would you need to format HTML code?
HTML that's minified or copied from a live website's source is often crammed onto one line with no indentation, which makes it nearly impossible to see which tags are nested inside which. Formatting adds proper line breaks and indentation for every tag, so you can trace the page's structure visually and edit it with confidence.
The tag structure that makes formatting clear
HTML is built from nested tags, where each opening tag needs a matching closing tag, and elements inside a tag should be indented one level deeper than their parent. The most common thing that hurts readability is losing track of which closing tag belongs to which opening tag in a long, unindented file. The tool automatically applies consistent indentation for every nested level, making it immediately obvious where one element ends and the next begins.
Steps to format
The tool formats your code instantly:
Open the HTML Formatter tool
Open the tool directly from the tools page.
Paste your HTML code
Paste the code you want to format into the input box.
Let the tool format it
The tool automatically applies indentation for every nested tag.
Copy the result
Copy the ready formatted code or download it as a file.
Practical tips
Before formatting your code, keep these points in mind:
- Check for unclosed tags after formatting, since a missing closing tag can throw off the indentation of everything after it.
- Use the formatted version while developing and debugging, and minify it separately for production.
- Review deeply nested sections carefully, since indentation makes structural mistakes easier to spot there.
- Keep consistent formatting across your project's files to make future edits easier for anyone on the team.
Since the tool runs with no sign-up and no permanent storage of your data, there's no need to worry about the privacy of the code you're formatting.
Common use cases
- Cleaning up a page's source code copied from a live website to study its structure.
- Formatting minified HTML from a build tool so you can edit it manually.
- Reviewing a page's markup before pushing changes to a live project.
- Preparing code for team review before merging it into a project.
Why choose Fastols?
Clear tag structure
Consistent indentation for every nested level
No data upload
Your code is processed directly in your browser
Completely free
Unlimited use with no hidden fees
Fast, readable formatting
A clear structure that makes review easier
Frequently Asked Questions
Does formatting change the page's content?
No, formatting only rearranges the code visually without changing any actual content or tag.
Does the tool automatically fix missing tags?
The tool formats the available code and highlights where the issue is, but the final fix is up to you.
Is the code I paste stored with you?
No, we don't keep or permanently store any copy of your data.
Is the tool completely free?
Yes, you can use it for free with no limit on how many times you use it.
Can I format a full HTML page without the tool slowing down?
The tool is built to handle large files efficiently, though performance depends on your device and the actual file size.
Ready to format your HTML code?
Try the HTML formatter for free right now — no sign-up, no software to install.
Try the HTML Formatter Now