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Developer toolFormatted output

HTML Formatter

Indent and tidy HTML, or minify it.

100% FreeRuns instantlyNo watermark
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  1. 1Paste inputAdd the text, code or data.
  2. 2AdjustChoose formatting or generation options.
  3. 3RunProcess everything in the browser.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.

How to use HTML Formatter

Paste input

Add the text, code or data.

01
Adjust

Choose formatting or generation options.

02
Run

Process everything in the browser.

03
Copy

Copy or download the clean result.

04

Your files stay private

Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.

Learn more about privacy
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Generated HTML — from a CMS, an email builder, a framework — arrives without meaningful indentation, and finding the div that is one level too deep in a wall of markup is genuinely hard.

What HTML Formatter does

Indents HTML so nesting is visible, and minifies it when you want to ship it smaller.

HTML is far more forgiving than XML: browsers repair unclosed tags silently, which is convenient and means a formatter cannot reliably tell you the markup is broken.

What it does

FormatIndents to show nesting
MinifyStrips whitespace for transmission
Malformed HTMLUsually still formats — browsers are forgiving
Void elementsHandled (<code>br</code>, <code>img</code>, <code>input</code>)
Inline vs blockWhitespace between inline elements is significant
RunsIn your browser — nothing uploaded
NotA validator — use the W3C validator for that
Minified savingSmall once gzip is applied — see the tip

Detailed steps

  1. Paste the HTML.
  2. Format to read it, minify to ship it.
  3. Check inline elements after formatting — see the tip.

Worth knowing

Watch whitespace between inline elements. A space between two <code>&lt;span&gt;</code> or <code>&lt;a&gt;</code> tags renders as a visible gap, so reformatting can shift a layout subtly — words running together or drifting apart. Block elements are safe; inline ones are not, which is why formatting a template is not always a no-op.

Frequently Asked Questions

Will formatting break my layout?

It can, in one specific way: whitespace between inline elements renders as a space. Adding newlines between spans, links or inline-blocks can introduce visible gaps. Block-level markup is unaffected.

Is minifying worth it?

Less than it used to be. Gzip and Brotli already compress repeated whitespace very efficiently, so minified HTML often saves only a few percent over the wire. Worth doing for large documents, rarely worth a build step on its own.

Does it validate my HTML?

No. HTML is deliberately forgiving and browsers repair errors silently, so a formatter cannot reliably flag problems. Use the W3C validator for correctness.

Is my HTML uploaded?

No — everything runs in your browser. That matters more than it might sound: HTML pasted into a formatter is frequently an email template containing client names, a CMS export with draft copy, or a page fragment carrying API keys in an inline script. None of it is transmitted.

Is HTML Formatter free?

Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.

Are my files uploaded?

No. HTML Formatter runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.

Do I need to install anything?

No. HTML Formatter works in any modern browser on desktop, tablet or phone. Open the page and start.

How often can I use it? Is there a daily limit?

On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.

This tool processes everything locally in your browser. You can disconnect from the internet after the page loads and it will still work.