Network & Web Tools

IP converters, subnet calculators, MAC generators, port tools, URL parsers, and web header builders — all offline.

14 tools in this category

  • IPv4 Address Converter

    Convert IPv4 addresses between dotted decimal, hexadecimal, binary, octal, and integer representations.

  • IPv4 CIDR Range Expander

    Expand a CIDR block (e.g. 192.168.1.0/24) into the full list of IP addresses with network and broadcast identification.

  • IPv6 ULA Generator

    Generate RFC 4193 Unique Local IPv6 addresses from a random or custom 40-bit Global ID with full /48 prefix output.

  • MAC Address Generator

    Generate random MAC addresses with configurable separators (colon, hyphen, dot) and unicast/multicast/universal/local bits.

  • MAC Vendor Lookup

    Identify the hardware vendor from a MAC address OUI prefix using an offline IEEE database — no network calls.

  • Random Port Generator

    Generate random unused port numbers in configurable ranges (1024-49151 registered, 49152-65535 ephemeral) with well-known port avoidance.

  • WiFi QR Code Generator

    Generate QR codes for WiFi credentials — enter SSID, password, and encryption type (WPA/WPA2/WEP/None) to share networks instantly.

  • SafeLink / URL Unwrapper

    Decode Microsoft SafeLinks, Google AMP redirects, Bitly, and other URL wrappers to reveal the actual destination URL.

  • URL Parser & Dissector

    Break any URL into protocol, host, port, path, query parameters, hash fragment, and origin — with individual field editing.

  • Meta Tag & Open Graph Generator

    Generate HTML meta tags, Open Graph, Twitter Card, and JSON-LD structured data with live preview of social sharing cards.

  • MIME Type Lookup

    Search file extensions to find MIME types and vice versa — covers 800+ registered IANA media types with descriptions.

  • ETA / Download Time Calculator

    Estimate file download and upload times from file size and connection speed — supports Mbps, MB/s, and real-world overhead factors.

  • Device & Browser Information

    Display your browser, OS, screen resolution, GPU renderer, CPU cores, memory, battery status, connection type, and installed plugins.

  • Punycode / IDN Converter

    Convert internationalized domain names (IDN) to Punycode and back — supports full domain and individual label conversion.