CSS Formatter

Online tool for formatting CSS rules with indentation, line breaks, and minification.

Обработка выполняется локально в браузере. Данные не отправляются на сервер.

For this tool, processing runs locally in your browser and data is not sent to the server.

CSS Formatter is a free online tool for formatting CSS with indentation or minification. Useful for DevTools fragments, CMS, and style blocks. Processing runs locally in your browser.

What it does

Output

Processing

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How to use

Paste CSS code, minified CSS, DevTools fragment, style block, or stylesheet.
Choose mode: format with indentation or minify.
Configure indent, comment preservation, property wrapping, and other options.
Copy the result and review warnings if CSS contains media queries, keyframes, variables, or SCSS-like syntax.

More about this tool

CSS Formatter brings CSS code to readable form with line breaks and indentation.

Useful for minified styles, DevTools fragments, CMS, email templates, style blocks, and small stylesheets. Choose 2 or 4 space or tab indent, preserve comments, put each property on its own line, minify CSS, and get warnings for @media, @keyframes, @supports, CSS variables, and SCSS-like nesting.

The service formats CSS but does not replace Stylelint, PostCSS, Autoprefixer, or a full CSS validator.

Processing runs locally in your browser.

Formats CSS with indentation
Can minify CSS
Supports media queries and keyframes
Preserves CSS variables
Can preserve comments
Suitable for DevTools, CMS, email templates, and style blocks
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What does the CSS formatter do?

It adds line breaks and indentation to CSS so styles are easier to read, check, and edit.

Can I minify CSS?

Yes. Minify mode removes non-significant whitespace and line breaks while preserving CSS meaning.

Are CSS comments preserved?

Yes, if comment preservation is enabled. If disabled, comments can be removed from the result.

Are @media and @keyframes supported?

Yes. The tool should format nested @media, @supports, and @keyframes blocks with clear indentation.

What happens to CSS variables?

CSS custom properties such as --color-primary and var(--color-primary) should stay unchanged.

Can properties be sorted alphabetically?

Yes, but sorting is off by default because property order sometimes matters for fallback values and cascade.

Is SCSS or LESS supported?

This tool is for CSS. SCSS/LESS-like nesting may trigger a warning but SCSS or LESS compilation is not performed.

Is this a CSS validator?

No. The formatter makes CSS readable. Use Stylelint, PostCSS, or a dedicated CSS validator for strict checks.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.

How to use

Paste CSS code, minified CSS, DevTools fragment, style block, or stylesheet.

Choose mode: format with indentation or minify.

Configure indent, comment preservation, property wrapping, and other options.

Copy the result and review warnings if CSS contains media queries, keyframes, variables, or SCSS-like syntax.

More about this tool

CSS Formatter brings CSS code to readable form with line breaks and indentation.

The service formats CSS but does not replace Stylelint, PostCSS, Autoprefixer, or a full CSS validator.

Processing runs locally in your browser.

Formats CSS with indentation
Can minify CSS
Supports media queries and keyframes
Preserves CSS variables
Can preserve comments
Suitable for DevTools, CMS, email templates, and style blocks
Runs in the browser
Data is not sent to the server
No registration required

Frequently Asked Questions

What does the CSS formatter do?

It adds line breaks and indentation to CSS so styles are easier to read, check, and edit.

Can I minify CSS?

Yes. Minify mode removes non-significant whitespace and line breaks while preserving CSS meaning.

Are CSS comments preserved?

Yes, if comment preservation is enabled. If disabled, comments can be removed from the result.

Are @media and @keyframes supported?

Yes. The tool should format nested @media, @supports, and @keyframes blocks with clear indentation.

What happens to CSS variables?

CSS custom properties such as --color-primary and var(--color-primary) should stay unchanged.

Can properties be sorted alphabetically?

Yes, but sorting is off by default because property order sometimes matters for fallback values and cascade.

Is SCSS or LESS supported?

This tool is for CSS. SCSS/LESS-like nesting may trigger a warning but SCSS or LESS compilation is not performed.

Is this a CSS validator?

No. The formatter makes CSS readable. Use Stylelint, PostCSS, or a dedicated CSS validator for strict checks.

Is my data sent to the server?

No. Processing runs locally in your browser and data is not sent to the server.

Do I need to register?

No. The tool works without registration.