QR 
EN Little Free Dev Tools 🐾
UUIDs, passwords, hashes and Base64 — computed on your device, no ads, no upload, no “pro” tier.
A lot of “online tools” wrap basic arithmetic in ads and upsells. These run entirely in your browser with the platform's own crypto — instant, private, and free.
🔑 UUID (v4)
A random, universally-unique identifier.🔒 Password generator
Cryptographically random — never leaves your device.#️⃣ SHA-256 hash
Type text; the hash updates live.🔤 Base64
UTF-8 safe encode / decode.More free, private tools 🐾
QR Puppy started with QR codes — but a lot of things people pay for are just work your own device can do. So we give those away too.