DevFixProDev Toolkit

Tidy messy HTML and CSS markup

Re-indent tangled HTML or CSS so you can read and edit it — entirely in the browser.

By The DevFixPro Editorial Team · independent editorial research project

Private by design. Every tool linked below runs 100% in your browser — your code, text, and tokens never leave your device.

Markup with no breathing room

A copied template, a generated block, or a hand-edited stylesheet has lost all indentation. You cannot tell where a tag or rule ends. Re-indenting by hand is error-prone.

Indent it in place

Use the HTML / CSS Beautifier, switch between HTML and CSS mode, and paste your markup. Tags nest by indentation (HTML) or braces by indentation (CSS) so the hierarchy is visible at a glance.

Worked example

<div><p>Hello</p><span>World</span></div> expands into a readable tree. A flat CSS rule block gains per-property lines and brace alignment.

Boundaries

  • Basic indentation only — it does not validate markup or resolve malformed tags.
  • For strict, spec-compliant formatting, use a dedicated HTML/CSS formatter in your build.

FAQ

Will it fix broken HTML? No — it only indents what parses. Validate separately if structure is wrong.

Self-closing tags? Common void elements (br, img, input…) are treated as non-nesting.

Related tools

Open the utility this guide covers and try it on your own data.

Tool

HTML / CSS Beautifier

Re-indent messy HTML or CSS markup for quick readability, locally.

Open tool →Tool

JavaScript Beautifier

Indent and tidy minified or hand-edited JavaScript in your browser, no upload.

Open tool →

Frequently Asked Questions

Does reformatting markup ever change how a page renders?

Between block elements the whitespace is insignificant, so reindenting changes nothing visible. Inside inline contexts some whitespace can matter, which is why a formatter that preserves it rather than collapsing everything is the safer choice.

Why does my closing tag error appear at the end of the file?

Because the browser recovers by nesting everything after the mistake inside the unclosed element, so the failure surfaces wherever the imbalance finally becomes impossible to resolve rather than at the real cause.

Which is easier to audit, the HTML or the CSS?

Both benefit, but for different reasons. Indentation on markup exposes nesting errors, while a formatted stylesheet makes the order and weight of competing selectors visible, which is how a cascade problem becomes obvious.

← All guides

Related tools from our network

A focused set of free calculators and guides across related topics — no account required.

Tools

Practical tools