You open your project folder, switch to "Large Icons" view, and... nothing. Just a sea of identical blue generic file icons. You have to click, wait, and guess which file is your final character model or which texture is the right normal map.
Check out 3D Viewer (built into Windows 10/11). It doesn't give you thumbnails, but it opens STL/OBJ files instantly. Should You Install MysticThumbs Today? Only if you are on Windows 10 LTSC (offline, stable) and you have a license key. mysticthumbs full
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Rest in peace, MysticThumbs. You made Windows feel like it actually respected artists. Did you use MysticThumbs back in the day? Do you have a modern alternative for previewing .skp or .fbx files? Let me know in the comments below. You open your project folder, switch to "Large