Transform messy HTML into clean, readable, well-structured code. Format, minify, and validate markup with flexible options: custom indentation, max line length, whitespace preservation, self-closing void tags, and lowercase tag names.
Open HTML Formatter → free, no sign-inAuto-generated HTML — from a CMS export, a template engine, an email builder, or a web scraper — is rarely readable. Tags are nested inconsistently, indentation is absent or wrong, and attribute order is arbitrary. The HTML Formatter tidies all of that up: paste your markup, click Format, and get back clean, consistently indented HTML. The minify option works in reverse for production code; the validator catches structural errors.
Developers cleaning up generated markup, designers inspecting code from a no-code tool, content managers preparing HTML for a CMS, and anyone who needs to read or maintain HTML that wasn't written by hand — this makes it legible.
No tutorials. No learning curve. Open it and get started.
No server uploads. Flexible formatting options let you set your preferred indentation size, maximum line length, and whether void tags should self-close — so the output matches your project's code style.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. HTML Formatter was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
What does 'Format' do?
It reformats your HTML with consistent indentation and structure, making it easier to read and maintain.
What does 'Minify' do?
It strips whitespace and unnecessary characters to produce the smallest possible HTML — useful for production.
Can I set custom indentation?
Yes — set your preferred number of spaces or tabs.
Does it validate HTML errors?
Yes — the validate function checks for common HTML errors.
Is this free?
Yes — free, no sign-in required.
Free. Instant. No sign-in. Open it and get the job done.
Open HTML Formatter on Doathingy.com →