Everyday
Site down checker
Check if a website is down right now, or test popular sites.
Status
-
- Response time-
- Checked URL-
This check only shows whether the server answered, not the exact HTTP status code. Ad blockers, VPNs, or strict networks can cause false "down" readings - if a big site shows down here but loads in a tab, trust the tab.
Popular sites
How to use this checker
1. Type any website address and press Check now. 2. A green Up means the server answered; a red Down means nothing answered within 15 seconds. 3. Use the popular-sites board to test big sites one by one, or press Check all.
Worked example
Checking google.com usually returns Up in well under a second. Checking a made-up address like this-site-does-not-exist-12345.com returns Down or unreachable, because no server answers.
How the check works
Your browser sends a lightweight request to the address with a 15 second timeout and measures how long the server takes to answer. The request runs in a mode that hides the exact HTTP status code, so the answer is reachable or unreachable - not 200 versus 404 versus 500. The check runs entirely in your browser; nothing is sent to CrunchBench.