Hey Product Hunt 👋 What inspired this: I kept hearing the same complaints from people around me. A friend gets sent a .heic photo from an iPhone and it won't open on their Windows laptop. Another friend running a small business is either paying monthly for an invoice tool or rebuilding one in Word every time. Someone else just needs a QR code and every generator wants an account first. The problem underneath all of it was the same shape, a small task made either expensive or sketchy by whatever's free online. So I built tooldo: 9 everyday file tools (PDF merge/split, image conversion, video compression, invoices, QR codes, CSV/JSON, and more), with one rule, nothing ever uploads. Everything runs in your browser, on your device. How the approach changed along the way: I originally shipped a 10th tool, a background remover using a hosted ML model. It passed every test, then started failing for real visitors, traced to the model host's CDN caching an error at some edge locations. A retry didn't fix it. I ended up removing the tool entirely rather than take on hosting the model myself, it was the only tool depending on infrastructure I didn't control, which went against the whole point of the project. That decision shaped everything after it: no tool ships unless it can run fully client-side. Start with the PDF tool if you want to see it in action, drop a file in, every page becomes a card you can drag, rotate, or remove. Open source, MIT licensed. Would love your feedback. tooldo.online

tooldo

9 free tools that run entirely in your browser

9 free tools that run entirely in your browser