Website Uptime Checker
Check if a website is up or down, verify server availability, and test HTTP response status.
How to Use Website Uptime Checker
Enter website URL.
Click 'Check Uptime'.
View live online/offline status.
Frequently Asked Questions
How does it detect if a site is up?
It attempts an immediate fetch request and measures status codes.
Related Developer Tools
Explore more free client-side developer utilities in this category
API Tester
Test REST API endpoints live in your browser with custom HTTP methods, headers, query params, and body.
REST API Client
Lightweight, postman-like browser REST client for debugging and testing web services.
API Documentation Generator
Generate clean, markdown and HTML API documentation from endpoint definitions and JSON payloads.
GraphQL Playground
Test GraphQL queries and mutations with variables and custom authentication headers.
Webhook Tester
Inspect, test, and simulate webhook payloads, event triggers, and signature verifications.
cURL Command Generator
Build custom cURL commands visually with method, headers, auth tokens, query params, and body.