Network Tools
HTTP references, cURL converters, WebSocket testing, and network utilities.
cURL to Fetch Converter
Paste a cURL command and get the equivalent JavaScript fetch() code instantly.
Port Numbers Reference
Look up well-known TCP/UDP port numbers with service names and descriptions.
WebSocket Tester
Connect to any WebSocket server, send messages, and view real-time responses.
Network Speed Estimator
Estimate your network latency and download speed using browser fetch timing.
HTTP Methods Reference
Complete guide to HTTP methods β GET, POST, PUT, DELETE, PATCH, and more.
Query String Builder
Visually build and parse URL query strings β add, edit, and remove parameters with ease.
User Agent Parser
Parse any User-Agent string to extract browser, OS, device type, and engine details.
IP Address Converter
Convert between IPv4, IPv6, decimal, binary, and hex formats. Shows address class and type.
Bandwidth Calculator
Calculate file transfer time given bandwidth, or required speed given file size and time.
HTTP Cookie Parser
Parse Set-Cookie headers and cookie strings into structured key-value pairs with attribute details.