Opera 브라우저가 필요합니다.
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.
- 이 확장 기능은 모든 웹 사이트의 데이터에 액세스할 수 있습니다.
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확장 기능 정보
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