Check if any website is online and measure its response time instantly. Free uptime checker with visual status indicators and ping history. 100% client-side, no data sent to servers.
This free website ping test checks if a website is online by attempting to load its favicon and measuring the response time. Unlike traditional ping commands that use ICMP (which browsers cannot send), this tool uses HTTP-based techniques that work from any browser without plugins or special permissions. It's perfect for quickly checking if a site is down for everyone or just for you.
Unlike traditional ICMP ping (which requires system-level access), this browser-based tool checks website availability using two HTTP techniques: (1) loading the site's favicon with a cache-busting timestamp, and (2) attempting a fetch request. Both methods measure timing and report whether the site responded.
Browsers enforce CORS (Cross-Origin Resource Sharing) policies that prevent reading response details from other domains. We can detect if a resource loads (online) or fails (offline), but we cannot read the exact HTTP status code without a backend proxy.
This tool provides a good indication of whether a website is reachable from your current network and location. Results may differ from server-side monitoring tools due to CDN routing, geographic location, and local network conditions. For critical monitoring, combine this with dedicated uptime services.
You can check most public websites. Some sites may block favicon requests or have strict CORS policies that limit what we can detect. Sites behind authentication, IP restrictions, or aggressive bot protection may show as offline even when they are up.