Network Tools
A free toolbox for everyday networking tasks — subnet math, MAC vendor lookup, port reference, DNS records, HTTP headers, Wi-Fi QR codes and password generation. Everything runs in your browser or on our server, no signup.
Subnet calculator
Calculate subnet mask, network and broadcast address, host range and CIDR for any IPv4 address. Works for /24, /16, /8 and every prefix between 0 and 32 — handy when planning a TP-Link, Asus, Netgear or MikroTik LAN.
MAC vendor lookup
Identify the manufacturer of any device from its MAC address. Powered by the IEEE OUI database with 39,000+ registered vendors including Cisco, Apple, Samsung, TP-Link, Huawei, Xiaomi, Hikvision and Ubiquiti.
Port reference
Look up any TCP or UDP port number — 22 (SSH), 80 (HTTP), 443 (HTTPS), 3389 (RDP), 8080, 25565 and 1,500+ IANA-registered services. Find which application runs on a port before opening it on your router.
Wi-Fi QR generator
Generate a Wi-Fi QR code from your SSID and password. iPhone and Android scan it to connect instantly — no typing the WPA2/WPA3 key from your TP-Link, Huawei, Asus or Zyxel modem.
Password generator
Create cryptographically random passwords for your router admin panel, Wi-Fi network, IP camera or IoT device. Adjustable length (8–64), uppercase, numbers, symbols — generated entirely in your browser.
DNS lookup
Query A, AAAA, MX, NS, TXT and CNAME records for any domain in real time. No third-party API — direct DNS lookup against Google 8.8.8.8 and Cloudflare 1.1.1.1.
HTTP headers
Inspect any URL's response headers and security policy. Check HSTS, Content-Security-Policy, X-Frame-Options, X-Content-Type-Options, Referrer-Policy plus Server, Content-Type, Cache-Control in one click.
IP security check
Instantly see your public IP address, location, ISP, and connection details. All information is detected automatically from your connection.
Password strength
Test how strong your password is. We check length, complexity, common patterns, and estimate how long it would take to crack.
Base64 Decoder & Encoder Online — Free Converter
Free online Base64 encoder and decoder. Encode text or binary to Base64, or decode Base64 back to its original form — entirely in your browser.
URL Encoder Decoder Online — Free Percent-Encoding Converter
Free URL encoder and decoder. Convert special characters to %XX percent-encoding for use in query strings, or decode back to readable text.
Hash Generator Online — Free MD5 SHA-1 SHA-256 SHA-512
Compute MD5, SHA-1, SHA-256 and SHA-512 hashes of any text in your browser. No upload — input never leaves the page.
UUID v4 Generator Online — Free Bulk UUID Generator
Generate cryptographically random UUID v4 identifiers in your browser. Useful for primary keys, idempotency tokens and unique resource IDs.
Unix Timestamp to Date Converter Online — Free Epoch Converter
Convert between Unix epoch seconds and human-readable dates. Supports milliseconds, ISO 8601 and your local timezone.
JWT Decoder Online — Free Decode JWT Token Header & Payload
Decode a JSON Web Token in your browser to inspect its header and payload. Signature is NOT validated — debugging only.