Developer Tools
JSON Formatter
Format JSON with readable indentation and check for syntax errors.
Use ToolHTML Formatter
Indent HTML source for easier reading and editing.
Loading the tool…
How to Use the HTML Formatter
- Paste your HTML source.
- Format the code.
- Copy or download the readable HTML.
Understanding Your Result
Formatting is not HTML validation. Embedded scripts are displayed as text and are never executed by this tool.
Review the output before placing it in a document, publishing a file or using it in another application. Keep a copy of your original input so you can compare the result or try different settings. This interface is designed for a focused task: it does not replace a full editor, a professional assessment or the checks required by your destination service.
Working in Your Browser
The built-in HTML Formatter processes the data you enter in the current browser tab. Tool input is not submitted to a remote processing service. Clear the interface or close the tab when you finish, especially on a shared device. Downloaded files and copied text remain on your device until you remove them.
For another task, follow the related tool links below or return to all U18-CHAN tools. Related utilities can help you prepare an input or finish a result without installing extra software.
HTML Formatter Features
- Locally bundled formatter
- Readable indentation
- Source code stays as text
Frequently Asked Questions
How does HTML Formatter process my input?
The built-in interface processes your input in this browser tab. It does not upload the text or file to a processing server. Ordinary page visits and tool searches still request information from the website.
What should I check before using the HTML Formatter result?
Formatting is not HTML validation. Embedded scripts are displayed as text and are never executed by this tool.
Is this HTML Formatter free to use?
Yes. This built-in tool does not require payment, registration or installed software. You need JavaScript and a supported modern browser.