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Construct 3 recompress images4/8/2024 ![]() For my 70,000 images, that’s 4 GB of data I don’t want. Metadata for my images was 60 KB per image. In my case, I want GPS locations and Date Taken, but none of the camera details (exposure time, ISO setting, camera model name). You also want to run it in parallel across multiple threads, and it’s worth trimming unwanted metadata from your images. I couldn’t get it to build, and there wasn’t a built Windows executable handy, but another repo has published releases (under vendor/win), or get it here (MIT license).įor archive quality, run jpeg-recompress with the default settings. I finally found jpeg-recompress, which saves at multiple quality levels and runs a “human-perceived difference” algorithm to measure the perceived loss. ![]() I researched different tools (,, ImageMagick, PNGQuant), but it was important to me that the tool wouldn’t compress the photos too much, and I have too many photos to review the outputs manually. I figured our phones would produce decently optimized JPG photos directly, but it turns out that a quick pass with an optimization tool reduced the sizes by half with no difference that I could perceive. I recently decided to make a local and second-cloud backup of our digital photos, and decided to see if I could optimize them in the process. ![]()
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