Hey Product Hunt community! 👋 I'm excited to share JJ Toolbox with all of you today! 🚀 As developers and designers, we use daily online utilities all the time—formatting JSON, parsing JWTs, generating QR codes, inspecting hashes, testing regex, and converting text. But let's be honest: most existing web toolkits out there are either cluttered with heavy ads, slow to load, or constantly sending your sensitive code/data back to third-party servers. That’s why I built JJ Toolbox—a fast, privacy-first, and 100% client-side collection of developer utilities. 💡 Key Highlights: 100% Client-Side & Offline: All parsing, formatting, and cryptography run entirely inside your browser. Zero server logs, zero data transmission. Your sensitive keys and tokens stay completely private. Lightning Fast & Clean: No heavy bloat, no distracting popups. Just pure, clean tools ready when you need them. 18+ Essential Utilities (and counting): From JSON Formatter, JWT Inspector, Hash/HMAC Generator, and Regex Tester to QR Code Studio and Case Transformers. I'd love for you to give it a try and let me know what you think! Which tool do you use most in your daily workflow? What other utilities or features would you like to see added? Huge thanks for your support and feedback! ❤️

JJ Toolbox

Pure Client-Side Developer & Web Utilities

Pure Client-Side Developer & Web Utilities