Overview
W3C CSS Validator is a validator bot from W3C used for markup validation, accessibility testing, structured-data review; it appears in server logs as .
Profile
- Operator
- W3C
- Classification
- Validator
- Verification
- Verified
- Last verified
- Aug 7, 2026
- Common Use
- W3C CSS Validator is used for markup validation, accessibility testing, structured-data review, and technical page-quality checks.
- Company
- W3C
- Confidence
- Medium
- Family
- W3C
- Identity Type
- official-documented
- Kind
- validator
- Purpose
- css-validation
- Respects Robots
- unknown