Enter Website URL
About Website Status Checker
Free online website status checker. Quickly check if any website is online or offline. Enter a URL to test availability, response time, and HTTP status code. Everything runs locally: https and other values are processed on your device, never sent to a server. Ideal for web admins, developers, and DevOps professionals.
This tool uses the browser's Fetch API with no-cors mode to send a lightweight request to the target website. It measures the round-trip time to determine if the server is responding. While browser security policies (CORS) prevent reading the exact HTTP status code, the tool reliably detects whether a website is reachable from your network.
Common Use Cases
- Website monitoring: Quickly verify if your website is accessible from a different network
- Troubleshooting: Check if a site is down for everyone or just your connection
- Response time benchmarking: Measure how quickly a website responds to requests
- Development testing: Verify if your staging or production server is reachable
- API endpoint checks: Test if your REST API endpoints are responding
Understanding Website Status Results
Online: The website responded to the request within the timeout period. The response time indicates how quickly the server replied.
Offline / Unreachable: The request failed before receiving a response. This could mean the server is down, the domain doesn't resolve, or a firewall is blocking the connection.
Timeout: The server didn't respond within 10 seconds. This often indicates server overload or network issues.
CORS: Due to browser security policies, the tool cannot read the exact HTTP status code. However, a successful CORS response confirms the website is reachable.
Frequently Asked Questions
How does the Website Status Checker work?
This tool sends an HTTP request from your browser to the target website (using no-cors mode), measures the response time, and determines if the site is reachable. If the request succeeds or returns a response, the site is marked as online. If it times out or encounters a network error, it is marked as offline. All checks happen locally in your browser.
Why does it show CORS instead of HTTP status code?
Due to browser cross-origin security policies (CORS), a pure frontend tool cannot directly read HTTP status codes from other websites. The no-cors mode can detect if a site is reachable, but cannot retrieve detailed HTTP status information. This is a browser security restriction, not a tool limitation.
The site shows offline but I can access it?
Possible reasons: 1) Your network environment restricts cross-origin requests; 2) The target website has strict CORS policies; 3) A firewall or proxy is blocking the request; 4) The website uses special redirect strategies. We recommend cross-checking with other tools.
Does this tool upload my data?
No. All checks happen locally in your browser and do not pass through any intermediate server. The URL you enter is only used to initiate a browser-side request and is never recorded or uploaded.
Can I check multiple websites at once?
The current version supports checking one website at a time. Enter a URL, check it, then enter another. For batch monitoring, we recommend using a dedicated website monitoring service.
Website Status Checker Β· Client-side only Β· No data upload