DevKit
v1.0.0Essential Developer Utilities
All your favorite developer tools in one place. Privacy-first, ad-free, and blazingly fast. No logins required, data stays in your browser.
Privacy First
All tools run locally in your browser. Your data never touches our servers.
Lightning Fast
Instant load times, zero pop-ups, no distractions. Just pure productivity.
Always Growing
New tools added regularly based on community feedback and requests.
Available Tools
Click on any available tool to get started
Base64 Encoder
Encode and decode Base64 text and files with image preview
Text EncodingColor Viewer
Pick colors, check WCAG contrast, generate palettes, and simulate color blindness
Data ConversionCron Expression Builder
Build and visualize cron expressions with a visual editor
Data ProcessingDate Converter
Convert between timestamps and human-readable dates
Data ConversionDiff Checker
Compare text side-by-side with word-level and unified diff views
Text ProcessingHash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes
Security ToolsJSON Formatter
Format, validate, minify, diff, and explore JSON with tree view
Data ProcessingJWT Decoder
Decode, inspect, and analyze JWT tokens with expiry checks
Security ToolsPassword Generator
Generate secure passwords and passphrases with entropy analysis
Security ToolsRegex Tester
Test regular expressions with live match explanations
Text ProcessingString Case Converter
Convert between camelCase, snake_case, kebab-case, and more
Text ProcessingURL Encoder/Decoder
Encode, decode, parse, and build URLs with query parameter editing
Text EncodingUnix Timestamp Converter
Convert Unix timestamps with live clock and relative time
Data ConversionUUID Generator
Generate UUID v4, v7, ULID, and NanoID with validation
Security Tools