Series
How I built Fizzdoc: 74 free PDF, photo and audio tools that run entirely in the browser, with no backend and no uploads. WebAssembly, on-device AI, offline support and what the real traffic looks like.
Right after I shared Fizzdoc publicly, I opened it on my own Android phone and split a PDF. It took six minutes. Six. On my laptop the same kind of job took about a second. The link was already out in
When you’re the only engineer in the family, you automatically become the unpaid IT department, video producer, and resident graphic designer, because to relatives, "computers" is just one big subject
Most "free online PDF tool" sites have the same architecture: your file goes up to their server, gets processed, and comes back. The privacy policy says they delete it after an hour. You have to take
Working out how many real people use a free tool, using only the CDN's numbers.
