Free tools
Free tools for developers
We build website monitoring for a living, so we end up making little tools along the way. Here are a few we think you'll find handy. They're free, and none of them need a signup.
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DNS lookup
See every DNS record for any domain: A, AAAA, MX, TXT, and more, with a plain-English explanation of what each one does.
🪞Request Mirror
Send any HTTP request and see exactly what arrived. Good for debugging webhooks, API clients, redirects, and status codes.
📡Website down checker
Check whether a website is down for everyone or just you, live from six locations around the world.
