Web Developer & Network Tools
Parse URLs and query strings, convert IP addresses and calculate subnets, look up HTTP status codes, generate HTTP headers and meta tags, and inspect your browser, screen and keyboard events.
🔒 Runs in your browser — nothing is uploaded ✓ Free, no signup
- URL ParserNewBreak a URL into protocol, host, path, query parameters and hash.
- IP Address ConverterNewConvert IPv4 between dotted, decimal, hex and binary, and expand IPv6.
- HTTP Status CodesNewEvery HTTP status code explained in plain English — searchable.
- User Agent ParserNewSee your user agent and parse any UA string into browser, OS and device.
- Subnet CalculatorNewCalculate network, broadcast, host range and mask for any IPv4 CIDR.
- Meta Tag GeneratorNewGenerate SEO meta tags, Open Graph and X card tags with live previews.
- Cookie ParserNewParse Cookie and Set-Cookie headers into a readable table with security checks.
- CORS Header GeneratorNewGenerate CORS and security headers for Nginx, Apache, Express, Next.js and more.
- Screen Resolution CheckerNewSee your screen resolution, viewport size and device pixel ratio instantly.
- Keycode InfoNewPress any key to see its event.key, event.code and keyCode.