HTML Formatter
Format HTML with consistent indentation and readable structure.
Website & buildingFREE TOOL
HTML Preview
Preview an HTML fragment in an isolated browser frame.
Runs in your browser
Your input
Your input stays in your browser. No account needed.
Your result
↗A little input.
A little input.
A useful result.
Fill in the details and run the tool.
Your result will appear here.
No registrationProcessed locallyFree to use
How to use HTML Preview
Paste HTML and choose Run. Scripts are disabled; external assets may load.
- Paste your text or load the example.
- Check your input and run the tool.
- Review, copy or download the result.
Example input
<h1>Hello, world.</h1> <p>Your next big idea starts here.</p>
Frequently asked questions
How do I use HTML Preview?
Paste HTML and choose Run. Scripts are disabled; external assets may load.
Is HTML Preview free to use?
HTML Preview is free and does not require an account. Copy or download the result for your workflow.
What happens to my input?
Inputs and files are processed on your device. Anonymous usage events never contain your input or generated output.