rrewnd/peekr
Peekr adds instant thumbnails for PSD and PSB files in Windows Explorer, so you can see your work without opening Photoshop. Fast, tiny (~250 KB) and free, with no admin rights, background service or telemetry. Supports RGB, Grayscale and CMYK at 8 and 16 bit, with transparency. Open source (MIT). Early v0.1 release.
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