Formatters

HTML Formatter

Beautify HTML markup online

Input

1:00 Bytes

Features

Beautify HTML

Reformats compressed or messy HTML into properly indented markup

Live Preview

Renders your HTML instantly in an inline iframe as you edit

Run HTML

Execute the HTML and see the rendered result side by side

Copy & Download

Copy formatted markup to clipboard or download as an .html file

Format and preview in one place

This tool combines two things you usually need separate tabs for: a formatter and a browser preview. Paste your HTML, click Beautify to indent it properly, then click Run to see how it actually renders. The preview renders in an inline iframe, so you see exactly what the browser would show — styles, scripts, and all.

When is this useful?

Email templates, CMS-generated markup, and server-rendered HTML are all notoriously messy to read in raw form. Pasting them here gives you a formatted version to inspect. The Run button is especially handy when you're working on a fragment — a card component, a modal, a form — and you want a quick sanity check without spinning up a dev server.