⚠️ Browser Limitation: This feature requires a server backend and cannot be implemented in the browser. This page is for demonstration only.
Free online website uptime checker. Enter a URL to check if a website is accessible. Shows HTTP status code, response time, server info. Supports batch checking multiple sites.
Zero Deps · Works OfflineCheck via browser HTTP request. Some sites may be unreachable due to CORS policy. HEAD method recommended to save bandwidth.