100% Client-Side • Instant & Private • Zero Cloud Upload
Free CSS Unminifier & Formatter
Convert minified, dense, or obfuscated single-line CSS into cleanly indented, human-readable stylesheet code. Inspect selectors, properties, media queries, and variables with ease.
Configurable Indentation
Syntax Highlighting Mode
calc() Spacing Preserved
Ctrl + Enter Shortcut
What Unminifying Can & Cannot Do: Unminifying restores structural indentation, clean line breaks, and readable hierarchy. However, any original code comments or descriptive variable names that were completely discarded during prior minification cannot be recovered, as they do not exist in the minified source.
Minified Input Size
0 B
0 lines
Formatted Output Size
0 B
0 lines
Structural Expansion
0 Lines
No change
Formatting Speed
0 ms
100% In-Browser
What does a CSS Unminifier do?
A CSS unminifier (also called a CSS beautifier or de-minifier) takes dense, single-line, compressed stylesheets and reconstructs them into well-structured, properly indented, and formatted CSS code. It restores line breaks, tabs/spaces, and clean visual spacing between rules.
Can an unminifier recover comments removed during minification?
No. When CSS is minified for production, comments are permanently discarded to save bytes. Because the removed comments do not exist in the minified file, no unminifier can magically recreate original developer notes. However, any existing comments (such as license blocks) are preserved cleanly.
Does unminifying CSS change how my website looks?
Not at all! Unminifying strictly modifies whitespace, newlines, and indentation formatting. All selectors, properties, values, media queries, and cascade orders remain 100% identical in function.
Are my stylesheets uploaded or stored on your servers?
No. All tokenization, parsing, formatting, and file export are performed entirely within your web browser using client-side JavaScript. Your stylesheet code never leaves your device and is never logged on any remote server.
How does this tool handle calc() expressions and CSS variables?
Our tokenizing parser explicitly detects CSS math functions (such as calc(), min(), max(), and clamp()) and guarantees that mandatory spaces around addition (+) and subtraction (-) operators are never removed, ensuring valid CSS syntax.
