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CSS Analyzer & Stylesheet Stats

Analyze a stylesheet instantly: size, rules, selectors, colors, fonts, specificity, media queries and custom properties, plus common problems like !important and ID selectors.

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CSS Difference Checker

Compare two CSS files by rules and properties, not lines. See added, removed, changed, moved and renamed rules, highlighted in both versions.

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Duplicate CSS Remover & Merger

Remove duplicate CSS rules and properties. Merges rules with the same selector, keeps the value the browser uses, keeps fallbacks, and explains every change.

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CSS Box Model Visualizer

See how the CSS box model works. Change content size, padding, border and margin, compare content-box and border-box, and copy the CSS.

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Remove Empty Lines

Remove empty lines from text or lists instantly. Remove every blank line, keep one between paragraphs or trim only the start and end, and tidy trailing spaces.

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Unused CSS Finder - Command Line Version

For a more comprehensive audit, try our command-line PHP version. It crawls every page of your site, compares your stylesheets against all of them, and produces a full report with optional cleaned CSS files.

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CSS Logical Properties Converter

Free CSS logical properties converter. Transform margin-left, padding-top, width and more into flow-relative equivalents for RTL and i18n-ready layouts. Includes shorthand conversion and writing mode simulator.

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Unused CSS Finder

Free tool to find and remove unused CSS. Scan HTML, CSS, and JS to get a cleaned stylesheet, byte savings, and a breakdown of every removable selector.

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CSS Skeleton Loader Generator

Generate production-ready CSS skeleton loader components instantly. Customize card type, quantity, size, colors, border radius, and animation style

Updated

CSS Validator

CSS Validator has had a complete makeover, it now uses a newly developed CSS validation engine.

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CSS Position Visualizer

An interactive visual reference for every CSS position value - static, relative, absolute, fixed, and sticky - plus z-index, stacking contexts, and a live layout debugger.