Total ratings
4.23 (Rating count: 26)
Receive review notifications
Get notified when new reviews are posted so you can respond quickly.
Review summary
Pros
- Helps users catch HTML errors effectively while browsing or coding, improving code quality.
- Long-standing and reliable tool appreciated by users serious about writing clean HTML.
- Provides validation results directly within the browser, integrating well with developer workflows.
Cons
- No longer supports CSS HTML Validator, limiting its validation capabilities.
- Offline validation can cause false warnings, such as incorrect missing tags.
- Validation of frames and certain HTML elements is broken or no longer possible in recent Firefox versions.
- Options and compatibility issues with newer Firefox versions and Chrome cause partial functionality or failure.
- Requires extra clicks to access validation results and lacks immediate visual indicators, reducing usability.
Upgrade to see all 32 reviews
User Reviews
Recent rating average: 4.70
All time rating average: 4.23
Upgrade to see all 32 reviews
5 star 4 star
3 star
2 star
1 star
| Date | Author | Rating | Comment |
|---|---|---|---|
| 2025-03-27 | 远离***** | ||
| 2025-02-13 | 远离***** | ||
| 2024-07-02 | Fi***** | this add is good | |
| this add is good | |||
Upgrade to see all 32 reviews
Best Html Validator Alternatives
Here are some Firefox add-ons that are similar to Html Validator:
HTML Valid
Sonclub
HTML Validator Plus
OK365
Validate HTML
OKVIP
(X)HTML5 Checker
Francesco De Stefano
CSS Validation Checker
Lô đề online
Accessibility Validator
789Bet
HTML Tag Error Checker
macha
a11y.css accessibility checker
Stephane Deschamps
HTML, CSS, JS Validator
Martin Sullivan
HTML Comment Finder
VRZ
Web Developer Checklist
Toptal
webhint
webhint