Assay - the URL Inspection tools

Assay - the URL Inspection tools provide information about whois, subdomain, GeoIP, DNS, Ads, analytics, live HTTP headers, page source, page links, page archives, cookies, web crawlers (robots.txt), domain graph, domain reputation, malware, and much more of a website.

Mozilla Firefox:
Microsoft Edge:
Google Chrome:


Privacy notice

Please refer to the privacy policy


Version 1.0 - Aug 3, 2020

Version 0.6 - May 1, 2020

Version 0.5 - Apr 19, 2020

Version 0.4 - Apr 9, 2020

Version 0.3 - Apr 4, 2020

Version 0.2 - Mar 30, 2020

Version 0.1 - Mar 6, 2020

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Thanks for using the Assay extension. I’d like to hear your valuable feedback. If you have any feature requests or just like this extension, then please leave a comment on the extension review page.