
isitdown.page
Is it down? Plus 25 free web diagnostic tools
What it does
isitdown.page checks if any website is down in real time, not crowdsourced reports, not cached data. Alongside the checker, 25 free diagnostic tools that developers and site owners actually use: DNS Lookup, SSL Checker, HTTP Headers, Ping, WHOIS, Port Checker, Speed Test, Email Auth, Security Headers, Redirect Checker, Tech Stack Detector, and more. No signup. No account. No paywall. Every tool is free. We also monitor 450+ sites around the clock.
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- IMI made a down detector for down detectorNov 2025 · downdetectorsdowndetector.com · ▲591
After down detector went down with the rest of the internet during the Cloudflare outage today I decided to build a robust, independent tool which checks if down detector is down. Enjoy!!

- IMI made tool that let's you see everything about any website2024 · v1.web-check.xyz · ▲411
Yes, it's open source: https://github.com/lissy93/web-check :) Why I'm building this? There are a lot of tools out there for discovering meta and security data relating to a website, IP or server. But currently, there isn't anything that does everything, all in one place and without a paywall/ user sign up. It's still a WIP, and I'm working on a new version, with some more comprehensive checks, so any feedback would be much appreciated :)

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