Network & Web
22 tools available
API Request Builder
Build HTTP API requests with method, URL, headers, and body, then generate cURL, fetch, axios, or Python code
Bandwidth Converter
Convert between bandwidth units: bps, Kbps, Mbps, Gbps, Tbps, B/s, KB/s, MB/s, GB/s. Includes common use cases.
CIDR Calculator
Calculate CIDR ranges, subnet details, usable hosts, broadcast address, and network class for IPv4 and IPv6
CORS Tester & Builder
Analyze CORS response headers for security issues and build CORS configurations with code generation for multiple server platforms
DNS Record Type Reference
Educational reference for DNS record types (A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, PTR) with explanations and examples
DNS Record Reference
Quick reference guide for DNS record types including A, AAAA, CNAME, MX, TXT, NS, SOA, SRV, and PTR
HTTP Header Analyzer
Parse and analyze HTTP headers with explanations for each header's purpose and security recommendations
HTTP Method Reference
Comprehensive reference guide for all HTTP methods with properties, use cases, and common status codes
HTTP Status Code Reference
Searchable reference of all HTTP status codes with descriptions and common use cases
IP Address Converter
Convert IPv4 addresses between decimal, binary, hex, and integer formats with class and privacy detection
IP Subnet Calculator
Calculate network address, broadcast, subnet mask, host range, and more from an IPv4 address and CIDR prefix
JWT Builder
Build and sign JWT tokens from scratch with HMAC-SHA256 or create unsigned tokens
JWT Decoder
Decode JSON Web Tokens (JWT) to inspect the header, payload, and expiration status
MAC Address Lookup
Validate MAC addresses, format them in multiple notations, and identify unicast/multicast and administration type
MIME Type Lookup
Search for MIME types by file extension or type name
Network Speed Calculator
Calculate file transfer times across different connection speeds including 3G, 4G, 5G, WiFi, and Ethernet.
Port Number Reference
Searchable reference of common TCP/UDP port numbers with service names, protocols, and detailed descriptions
Port Reference
Searchable reference of common TCP/UDP port numbers with service names and protocols
Subnet Calculator
Calculate subnet mask, network address, broadcast address, and host range from CIDR notation
URL Parser
Parse URLs into their components, inspect query parameters, and reconstruct URLs from parts
URL Shortener Preview & Expander
Analyze shortened URLs, detect redirect services, parse UTM parameters, and strip tracking from links
WebSocket Tester
Test WebSocket connections, send and receive messages in real-time, and monitor connection status