Type any web address — get a live verdict in seconds: status code, response time. No signup.
01 Address input
Ready--------
02 Step row — watched addresses
03 Recently checked
Site
State
Code
Resp
When
04 Health summary — local AI
05 Frequently asked
How do I check if a website is down?
Type the address above and press Run. UpChecker sends a real request from the server and shows the HTTP status code and response time in seconds.
Is this website down for everyone or just me?
Because UpChecker checks from our servers, not your device, an UP result means the site is down for everyone — or the problem is on your side (Wi-Fi, DNS, VPN).
Is UpChecker free?
Yes — completely free, no signup, no limits shown. Checks are plain GET requests.
What do the status codes mean?
200–399 mean the site responded normally. 403/429 often mean bot protection or rate limiting. No code at all means the server never answered.
What counts as “down”?
A real outage is when nothing answers at all — connection refused, timeout, DNS failure — or the server returns a 5xx error (500, 502, 503, 504). Codes below 400 mean the host answered, so we call it up even if the page itself is restricted (401/403) or missing (404). The status-code guide decodes each one.
Why does a site show as up here but won’t load for me?
Because the check runs from our servers, not your network. If we reach it but you can’t, the problem is almost certainly on your end — connection, DNS, a firewall, or a stale cache. Try another network, an incognito window, or a router restart; the 30-second routine walks you through it.
Do you store the websites I check?
Yes — only the domain, the result (status, code, response time, timestamp), and when it was checked, so the homepage recents and per-site history work. Checks are anonymous; nothing about you as a visitor is stored. Details on the legal page.
Can I monitor my own website continuously?
UpChecker is built for on-demand checks, not 24/7 monitoring with downtime alerts. Use it for quick “is it just me?” checks — for continuous monitoring with notifications, a dedicated uptime service is a better fit.
Is checking a website this way safe or intrusive?
No. A single HTTP request is exactly what every browser does when it loads a page — we just do it once, from our server. It puts no meaningful load on the target site.