CryptoKit — UUID v4, SHA-256/512, Base64 & JWT Inspector
All-in-one client-side developer Swiss army knife: bulk UUID v4 generator, Web Crypto SHA-256/SHA-512 digest calculator, UTF-8 Base64/URL codec, and offline JWT token decoder.
More Instant Bengal Bytes Utilities
QR Code Studio
Generate crisp custom-colored QR codes for URLs, Wi-Fi auto-connect, vCard business cards, WhatsApp links, and emails — export high-DPI PNG or infinite-scale SVG instantaneously in your browser.
A4 + 80mm POSInvoice & POS Maker
Create clean A4 client invoices or 80mm thermal POS receipts in BDT (৳), USD ($), EUR (€), GBP (£), or INR (₹) with automatic tax/discount calculation, live fountain-pen signature stamping, and instant PDF print.
WebP / JPG / PNGImage Compressor
Shrink photo file sizes by up to 85% and convert between WebP, JPEG, and PNG locally inside browser RAM — inspect live Before vs After savings with zero server uploads.
EN + অভ্র বাংলাTypewriter Desk
Tactile mechanical typewriter with swinging typebar physics, synthesized acoustic keystrokes, 5 ink ribbons, 4 paper stocks, Avro phonetic বাংলা input, fountain-pen signature stamping, and aged-paper JPG/PNG export.