About

StackTools is a small, independent site with utilities I got tired of looking for: formatting some JSON, decoding a token, checking a DNS record. Nothing more.

Almost everything runs in your browser. Your input is not uploaded, stored or logged. The two exceptions are DNS Lookup, which queries a public DNS-over-HTTPS resolver, and Webhook Tester, which sends your request through this server because browsers block cross-origin calls.

There are no accounts, no analytics and no ads. Hosting is paid for out of pocket and with donations. See the tools list to get started.