I built an image compressor that never sees your images published

Every online image compressor I tried had the same problem: they upload your photos to a server. TinyPNG, iLoveIMG, Compress2Go — they all work the same way. You pick a file, it goes to someone else's computer, gets compressed, comes back. The compression is good. But your photo — with its GPS coordinates, device serial number, and timestamps baked into the EXIF data — just sat on a server you don't control. I kept thinking: image compression is just math. It's Canvas API, quality parameters, an