W3C Validator Checker
W3C Validator Checker is a Firefox extension that checks the validity of the current web page against W3C standards. It is intended for web developers and testers who need a quick validation check from the browser.
Overview
4 featuresW3C Validator Checker sits in PulseGate's Browser DevTools & extensions category. It focuses on checking whether web pages comply with W3C validation standards. It is built as a B2B product for web developers and website testers. W3C Validator Checker costs nothing to use. It runs on the web, embeddable surfaces, macOS, Windows, and Linux.
It is developed by Solouvi, and it first shipped in 2025. Among its 4 catalogued features are page validation, browser toolbar access, and HTML checking. The interface is available in 32 languages, including Czech, German, and Greek.
Summary written by a language model from the project’s public pages.
- Page validation
- Browser toolbar access
- HTML checking
- Permission controls
Built with & integrations
Trust & compliance
Indexing history
1What PulseGate has recorded for this listing
- Indexed17 Sep · 22:26 UTCW3C Validator Checker verified via Firefox Add-onsSource: Firefox Add-ons · Open
Frequently asked questions about W3C Validator Checker
- What does W3C Validator Checker do?
- W3C Validator Checker focuses on checking whether web pages comply with W3C validation standards. It is catalogued under Browser DevTools & extensions on PulseGate.
- Who should use W3C Validator Checker?
- W3C Validator Checker is a B2B product built for web developers and website testers.
- Does W3C Validator Checker have a free plan?
- Yes — W3C Validator Checker is free to use.
- What platforms does W3C Validator Checker run on?
- W3C Validator Checker runs on the web, embeddable surfaces, macOS, Windows, and Linux.
- Is W3C Validator Checker still active?
- Unverified. W3C Validator Checker has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
- What are alternatives to W3C Validator Checker?
- Similar projects tracked by PulseGate include CSS Validation Checker, (X)HTML5 Checker, and DNS Checker.CSS Validation Checker(X)HTML5 CheckerDNS Checker
- Who makes W3C Validator Checker?
- W3C Validator Checker is developed by Solouvi.
- When did W3C Validator Checker launch?
- W3C Validator Checker first shipped in 2025.
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