Developer Tools
Privacy-first developer tools that run entirely in your browser. No data collection, no tracking, available at no cost.
Featured Tools
All Tools
QR Code Generator
Create WiFi, vCard, URL QR codes instantly. Zero tracking, maximum privacy
Image Compressor
Compress images client-side without losing quality. WebP, PNG, JPEG support
Password Generator
Generate cryptographically secure passwords with true randomness. Zero storage
JSON Formatter & Validator
Format, validate, and beautify JSON locally. No data transmission
Markdown Editor
Live Markdown preview with GitHub Flavored Markdown. Private writing
Base64/URL/Hex Encoder
Base64, URL, Hex encoder and decoder. Zero-knowledge, client-side
Hash Generator
Generate SHA-256, SHA-1, MD5 hashes for text and files. Client-side only
UUID Generator
Generate cryptographically secure UUIDs (v1, v4, v7). Zero storage
AES-256-GCM Encryptor
Client-side AES encryption for text and files. Zero knowledge architecture
Timestamp Converter
Convert between Unix timestamps and human-readable dates. Multi-timezone
JWT Decoder
Safely decode and inspect JWT tokens. No verification, maximum privacy
Text Case Converter
Convert text case: camelCase, snake_case, PascalCase, and more
Text Diff Tool
Compare two texts and highlight differences. Line-by-line diff viewer
HMAC Generator
Generate HMAC signatures for API authentication. Client-side only