β Back to extensions
This validator checks the validity of Web documents in HTML.
This validator checks the validity of Web documents in HTML.
More in this category
React Developer Tools
π§βπ» Developer ToolsAdds React debugging tools to the Chrome Developer Tools. Created from revision 3cde211b0c on 10/20/2025.
4.05,000,000
FreeOpen source
ChromeEdgeFirefox
View details βWappalyzer - Technology profiler
π§βπ» Developer ToolsIdentify web technologies
4.63,000,000
Free
ChromeEdgeFirefox
View details βOctotree - GitHub code tree
π§βπ» Developer ToolsGitHub on steroids
4.9200,000
Free
ChromeEdgeFirefoxSafari
View details β