CSS Formatter Online (Beautify & Unminify CSS Free)
Format minified or messy CSS with 2- or 4-space indent in your browser. A simple beautifierโnot Prettier. Click Format CSS after you paste. No file upload.
CSS Formatting
Paste CSS, pick 2- or 4-space indent, then format. This is a simple indent tool, not Prettier or a CSS linter.
How to Use
- Select indentation size (2 spaces or 4 spaces)
- Enter CSS code to format in the input area
- Click the "Format CSS" button
- Copy and use the formatted result
Key Features
- Format minified CSS for readability
- Indentation options (2 spaces / 4 spaces)
- Brace alignment and line breaks
- Whitespace cleanup and code alignment
- Not Prettier, stylelint, or a CSS parserโno syntax validation
๐ก Note: Formatting runs in your browser and is not sent to a server. This is a simple indent/unminify tool, not Prettier. It does not check that CSS is valid and is not a drop-in for Prettier or stylelint.
Why Use an Online CSS Formatter?
Minified or cramped CSS is hard to read. This page is a local pretty-printer: it inserts line breaks around { } and ; and indents with 2 or 4 spaces. It is not Prettier, stylelint, or a CSS parser, and it does not check that the stylesheet is valid.
Paste CSS, choose indent size, then click Format CSS. Processing runs in your browser with JavaScript. Code is not uploaded to a Toolo server. Selector colons such as :hover and ::before stay attached; property colons get a space after them. /* */ comments are kept; // comments are not a CSS comment mode.
Key Features & Benefits
Built for a simple local indent of pasted CSS:
Client-Side Privacy
Formatting runs in the browser. Stylesheets are not uploaded or saved on a remote server.
2- or 4-Space Indent
Choose 2 spaces (default) or 4 spaces. There is no tab indent, no Prettier config, and no other style presets.
Unminify by Braces and Semicolons
Single-line CSS with { } and ; is typically expanded onto multiple lines. Nested braces increase indent depth. :hover and ::before stay intact. It is not a Sass/SCSS compiler.
Free, No Account
Use it without a login or paid plan. There is no coded file-size field. Very large pastes can still slow the tab. There is no file picker.
Frequently Asked Questions (FAQ)
Is my CSS code stored or logged on any external server?
No. Formatting runs in your browser with JavaScript. Code is not transmitted to or saved on a Toolo server.
Can this tool format minified CSS stylesheets?
Usually yes for ordinary minified CSS that uses braces and semicolons. It restores line breaks and indent; it does not validate syntax or perfectly align every declaration.
Does the CSS formatter support modern CSS syntax like nested rules and custom properties?
Custom properties such as --color: red; format like other declarations. Nested { } blocks indent by depth. Selector colons (:hover, ::before) are kept without extra spaces. It is still a brace/semicolon pretty-printer, not a CSS3 or PostCSS engine.
Is this the same as Prettier?
No. Prettier parses CSS into an AST and reprints it with a large set of rules. Toolo only indents and line-breaks around { } and ; in the browser. Use Prettier (or stylelint) in your editor or CI if you need that output. This page is for quickly unminifying or spacing CSS you paste.