CSS Selector Specificity Analyzer

About this tool

Calculate ID, class-like, and type selector counts for comma-separated CSS selectors, including zero-specificity :where(). CSS Selector Specificity Analyzer is designed for a specific developer workflow and runs on the supplied source directly in this browser. Paste a representative input, review the example to understand path, syntax, or output conventions, and run the operation to inspect a structured result. The tool performs parsing or transformation locally and does not transmit code or configuration to a Tool Fly server. Invalid source is reported with an error instead of being silently treated as valid. Copy or download the result for use in your own editor, build pipeline, or review process.

How to use this tool

1. Paste the source into each labeled field.
2. Use the example to confirm the accepted format, then run the operation.
3. Review the output and copy it or download it as a file.

How it works

CSS Selector Specificity Analyzer applies its configured css operation to the labeled source fields. The engine parses input locally, validates format constraints, and returns a structured output or an actionable parsing error. The source remains in browser memory; no build service, external API, or server-side code runner is involved.

When to use this tool

• Inspecting CSS source before committing or sharing a change.
• Converting a small CSS sample into a form required by another development tool.
• Checking parser feedback without installing a local command-line utility.

Limitations

CSS Selector Specificity Analyzer is a local syntax and transformation helper, not a substitute for the target application runtime, schema, or security review. Validate its output in the intended environment.

Privacy

Code and configuration pasted into CSS Selector Specificity Analyzer are processed in browser memory and are not sent to Tool Fly servers.