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Provided by the W3C consortium, it will check the HTML of any online page, file or text submitted. It will

Enter any URL and view all the requests made if you were loading this page; all requests not only to

Enter any site or page URL and it will analyse what cookies this page is using. The list of cookies,

Test any URL against WCAG accessibility web standards. Fast. Be ready to: suppress italics add missing labels repeating IDs increase

Super convenient file sharing system, encrypted from end to end. Upload any of your big file you have to share

An interactive map, showing worldwide internet network status. Powered by Cisco and updated every 5 minutes, it show the status

An online antivirus: VirusTotal acts as an aggregator of various virus, threat and breach scanners. You can submit your file

If you have problems with your server sending emails, usually a SMTP or DNS problem, this is it for testing.

You wonder how others format their text on LinkedIn, while the LinkedIn GUI does not permit it ? This is

A very effective tool to visualize where Cumulative Layout Shift (CLS) is exactly coming from and increase your page score