Simple, fast, in-browser developer utilities. No data leaves your machine.
Prettify, minify, and validate JSON
Prettify and validate YAML syntax
Encode and decode Base64 strings
Decode JWT tokens (header + payload)
Convert Unix timestamps and dates
SHA-1, SHA-256, SHA-512 hashing
Subnet calculator and CIDR breakdown
Parse cron expressions to human text
Encode and decode URL strings
JSON, shell, and whitespace escaping
Generate UUID v4 identifiers
Generate secure random passwords
Random tokens for API keys and secrets
Test regex patterns with highlighting
Uppercase, lowercase, sort, dedupe lines
Collapse multiline text to single line
camelCase, snake_case, kebab-case, etc.
Remove duplicate lines from text
Convert between YAML and JSON
Length, data size, temperature, and more
Convert seconds to human-readable durations
Break URLs into components
Parse and format query strings
Base64 secrets, env-to-YAML, label formatter
Compare two text blocks side by side