Developer Tools
Format and minify JSON payloads, encode and decode Base64 strings, visually build Linux cron expressions, and inspect JWT tokens 100% locally in your browser memory.
JSON Formatter & Validator
Format, validate, beautify, and minify JSON strings with live syntax error checking.
Base64 Encoder & Decoder
Encode plain text into Base64 format and decode Base64 strings back to readable text.
Cron Expression Generator & Explainer
Generate Linux cron schedule expressions visually with human-readable schedule explanations.
JWT Token Decoder & Inspector
Decode JSON Web Tokens (JWT) to inspect color-coded headers, payload claims, and expiration dates.
Free QR Code Generator
Generate customized, high-resolution QR codes for websites, WiFi networks, text messages, emails, and phone numbers. 100% private and client-side.
Secure Password & Passphrase Generator
Generate strong, unhackable passwords and memorable Diceware passphrases using cryptographically secure randomness. Includes entropy analysis and bulk generation.
Image Compressor & WebP Converter (100% Private In-Browser)
Compress PNG, JPEG, and WebP images by up to 90% directly in your browser without uploading files to any external server.
100% Free AI Background Remover & Transparent Cutout Studio
Remove image background online free with instant studio backdrops (Transparent, Pure White, Passport Blue, DSLR Blur) and 100% client-side privacy.
Client-Side Screen Recorder & Video Trimmer
Record your desktop screen, app windows, or browser tabs with microphone audio free online with 100% client-side WebRTC privacy.
Instant Client-Side Execution
Calculations and string formatting run in your browser JavaScript runtime with zero network latency.
100% Private & Secure
Your API keys, JWT tokens, and private JSON data are never sent to external servers or logged.
Developer Friendly
Clean code formatting, copy buttons, and visual builders designed to speed up daily engineering tasks.