Why I Built a Browser-Based Image Tool That Never Uploads Your Photos

Why I Built a Browser-Based Image Tool That Never Uploads Your Photos Every time you upload an image to an online tool, you're trusting that server with your data. Your photos contain GPS coordinates, camera serial numbers, timestamps, and sometimes even facial recognition markers — all embedded as EXIF metadata that most people don't even know exists. I wanted to build something different. A tool that processes images entirely in the browser, so your photos never leave your device. Here's what I learned building PixelFresh, and the technical decisions behind it. The Hidden Data in Your Photos Before diving into the technical side, let's look at what's actually in your photos. A typical JPEG from a smartphone contains: EXIF Field Privacy Risk GPS Coordinates Exact location where photo was taken DateTime When you were at that location Camera Make/Model Device fingerprinting Serial Number Unique device identifier Thumbnail May contain original crop before editing Software What apps you u