100% Client-side
Developer Toolbox
Fast, free, client-side tools for developers
JSON Formatter
Format, validate and minify JSON
Base64
Encode and decode Base64
URL Encoder
Encode and decode URLs
Hash Generator
Generate MD5, SHA-1, SHA-256 hashes
Color Converter
Convert HEX, RGB, HSL colors
UUID Generator
Generate UUID v4 and ULID
Timestamp Converter
Convert Unix timestamps to dates
Regex Tester
Test regular expressions with live matching
JWT Decoder
Decode JWT tokens — header, payload, expiry
YAML ↔ JSON
Convert between YAML and JSON formats
Diff Viewer
Compare two text blocks and highlight differences
HTML Encoder
Encode and decode HTML entities
Cron Parser
Explain cron expressions and show next run times
Base Converter
Convert between binary, octal, decimal, hexadecimal
CSV ↔ JSON
Convert between CSV and JSON with table preview
Password Generator
Generate secure passwords with custom options
Case Converter
Convert text between camelCase, snake_case, kebab-case and more
cURL Builder
Parse and build cURL commands