Client-Side Developer Tools That Respect Your Code Privacy
Fast, zero-latency developer utilities. Format and validate JSON, encode/decode Base64 and URLs, generate Web Crypto hashes and UUIDs, decode JWT tokens, and test regular expressions.
No Server Transmission
Inspect JWT tokens and format JSON without sending secrets across the wire.
Instant Execution
All algorithms run locally using browser V8 and WebAssembly engines.
Offline Capable
Installed as a PWA, developer tools continue working even without Wi-Fi.
Recommended Toolkit (8 tools)
Every tool is browser-first, free, and privacy-protected.
JSON Formatter & Validator
Prettify, format, validate, and minify JSON with syntax highlighting and error markers.
Base64 Encoder & Decoder
Encode text and files to Base64 strings or decode Base64 back to readable text.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 cryptographic hashes in real time.
JWT Decoder
Decode and inspect JSON Web Token (JWT) headers, claims, and expiry dates.
UUID / GUID Generator (v4)
Generate standard RFC 4122 v4 UUIDs individually or in bulk up to 500.
Regex Tester
Test regular expressions in real time with live match highlighting and flags.
Cron Expression Generator
Build cron schedule expressions with human-readable descriptions.
Color Converter (HEX, RGB, HSL, CMYK)
Convert colors between HEX, RGB, HSL, and CMYK formats with visual color preview.
Frequently Asked Questions
Are my tokens or source code stored on your servers?
Never. All developer tools execute entirely client-side. No network requests are made with your data.