About WebDesktopTools

A reference for the 38 browser-based tools that web work actually runs on — the encoders and formatters you open in a second tab, the header and CORS checks you reach for when something is failing, and the performance and security tools that matter once a site is public.

What each page tries to do

Not document flags — the underlying tools already do that. These pages cover the part that is harder to find: when a tool genuinely helps, what failure it distinguishes from what other failure, and whether it is worth running automatically rather than when you happen to think of it. Four sections per tool, in the same order every time.

The relationship to NetTests.NET

Every tool described here is a live check on NetTests.NET, which is where you point it at your own site and where the useful ones can be scheduled, stored and alerted on. This site is the explanation; that one is the platform. The links are the point rather than an afterthought.

And the sibling site

nettoptools.com covers the same platform from the other direction — DNS, routing, TLS auditing, mail authentication and the rest of the infrastructure side. A handful of tools appear on both, because they genuinely serve both audiences, and those pages are written separately for each. If you run the network rather than build the pages, that is the more useful site.