Opera browser required.
Right clicking a page allows you to validate the page using W3C NU Validator.
How to use:
1. Right click any page
2. Select 'Validate this page'
3. See the Validation results in a new tab.
- This extension can access your data on all websites.
Screenshot
About the extension
- Downloads
- 15,385
- Category
- Developer Tools
- Version
- 1.5.1
- Size
- 3.4 KB
- Last update
- 25 Aug 2015
- Licence
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