CSS Selector Analyzer
Paste one or more CSS selectors to get a full insight report — headline metrics, detailed statistics, warnings, and improvement suggestions. Everything is processed on your device.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
#main .card:hover .title, ul > li a
Example Output
specificity (a,b,c) per selector
How to Use
- 1Paste the one or more CSS selectors you want to analyze into the input box.
- 2If options are available (e.g. SQL dialect or regex flags), set them as needed.
- 3Click Analyze (or press Ctrl+Enter).
- 4Read the report: headline metric cards, detailed statistics, warnings, and recommendations.
About CSS Selector Analyzer
CSS Selector Analyzer computes each selector's specificity (a,b,c) — a=ids, b=classes/attributes/pseudo-classes, c=types/pseudo-elements — so you can compare which is "stronger". It warns about very specific multi-id selectors.
Useful when debugging why one rule overrides another.
FAQ
Is my data sent to a server?
No. The entire analysis runs in your browser with JavaScript. Nothing is uploaded, logged, or stored on our servers — safe for sensitive data.
How is this analyzer different from a parser, validator, or viewer?
An analyzer produces an insight report — metrics, statistics, warnings, and recommendations — to help you judge the quality or characteristics of the input. A parser breaks it into structure, a validator gives a valid/invalid verdict, and a viewer just displays it. An analyzer focuses on "how good / what are its characteristics".