HTML Formatter — Browser Developer Tool

Developer

HTML Formatter is a browser-based developer tool that indents html tag structure.

HTML Formatter

Runs in this browserInput is processed only in this browser. It is not sent to or stored on a server.

This is lightweight tag indentation. Review HTML validity, accessibility, and XSS separately.

HTML

Formatted HTML

Next actions

XML Formatter HTML Entity Converter

What is it

HTML Formatter lets you paste code or strings and inspect the result immediately. It is useful for debugging, validation, and encoding tasks without server storage.

indentation changes at opening and closing tags

How to use

1Paste the input.
2Choose a mode if available.
3Read and copy the result.

Reference

HTML Formatter — Browser Developer Tool Reference
Input	Result
sample	indents HTML tag structure

Sources & standards

MDN Web Docs: Client-side web APIs - MDN Web Docs
ECMAScript Language Specification - Ecma International

FAQ

Is HTML Formatter input sent to a server?

No. This tool runs in your browser and does not send input to a server.

Can I use HTML Formatter with sensitive values?

It runs in the browser, but avoid pasting tokens or passwords on shared devices or during screen sharing.