Dimas' Toolbox: Free browser tools with no sign-up, paywalls, or uploads

Hey Product Hunt 👋 I'm Dmytro (Dimas), a developer and product manager from Ukraine. I built Dimas' Toolbox out of frustration. Every time I needed something trivial — merge two PDFs, compress a photo, decode a JWT, convert HEIC to JPG — I'd land on a site that wanted me to sign up, hit a "3 free files per day" wall, slapped a watermark on the result, or quietly uploaded my files to who-knows-where. So I set a few rules: • No accounts, no paywalls, no limits, no watermarks • Everything runs client-side — your files and data never leave the browser • Each tool does one job and does it well It started with a QR code generator and has grown to 270+ tools across PDFs, images, text, dev utilities, CSS/design generators, and calculators. A few personal favorites: the on-device AI Background Remover, the Negative Film Scanner (turn a phone + screen into a film light table), and HDR Photo Merge. I'm adding new tools constantly, so I'd love to hear: what small tool do you keep searching for that's always locked behind a sign-up? Tell me in the comments and I'll try to build it. Thanks for checking it out! 🙏