I am a graphic designer from a small town in Punjab, India. For years I have watched the same scene at print shops here. A customer walks in and says "bhaiya, last month wala card dobara print karna hai, file aapke desktop pe hi hai". The desktop has hundreds of files called final, final 2 and final new, and every .cdr shows up as a blank white icon. So the shop owner opens them one by one in CorelDRAW while the customer waits. I had the same problem in my own folders, just with fewer customers watching. So I built Opsyra. It is a small Windows app that adds real thumbnails for design files in File Explorer: CorelDRAW, Illustrator, Photoshop, EPS, Figma, Procreate, Blender, SketchUp and around 50 formats in total. You see the actual design on the icon. It works even if the original software is not installed on that computer, and everything runs offline. No file names, paths or files leave your machine. Some things I learned building it: Every format is its own rabbit hole. Some files carry a usable preview inside them, some need to be rendered from scratch, and for a few the best I can honestly do is an info card. 3D files were the hardest. Showing a Blender or FBX preview without Blender installed meant writing my own small renderer. I shipped it only through the Microsoft Store. Certification went through on the first try, which honestly surprised me. It is live here if you want to try it: https://apps.microsoft.com/detail/9N92CTCWPWPK?cid=reddit\_sideproject I would really like feedback on two things: Which file formats do you use that Windows still shows as a blank icon? Is the free tier enough to be useful, or does it feel too limited? Happy to answer anything about the build or the Store process.   submitted by   /u/Tutorialsbynitin [link]   [comments]