URL Inspector
Break an absolute URL into protocol, host, path, query pairs and hash.
💻 Developer tools
Formatters, validators and everyday utilities for developers. All free, all running locally in your browser.
HTTP Status Lookup
Look up common HTTP status codes with class and a practical meaning.
Cron Expression Explainer
Turn a five-field cron expression into plain language and upcoming run times.
CIDR Subnet Calculator
Find the IPv4 network, broadcast, usable hosts, and subnet mask for any CIDR prefix.
Unicode Escape Converter
Convert non-ASCII text to JavaScript-style \u escape sequences and decode them back to readable characters.
Variable Case Converter
Convert identifier names between camelCase, PascalCase, snake_case, kebab-case and CONSTANT_CASE for any programming language.
UUID Generator
Generate up to 100 random UUID version 4 identifiers at once, uppercase or without hyphens. Cryptographically secure, free, no sign-up.