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So, say I have 25GB of photos on my OneDrive. How would I go about compressing them all in a lossless way similar to the way this website does it? I use Windows

So, say I have 25GB of photos on my OneDrive. How would I go about compressing them all in a lossless way similar to the way this website does it? I use Windows so no imageoptim for me.

kcbanner 12y ago
You use optipng, which this site just wraps.
- slowmotiony 12y ago
  What about JPEGs?
  - rast-a 12y ago
    For bigger images the quality always gets downgraded to 80 and Huffman tables are optimized. For smaller ones the quality differs so he's using a tool to automatically pick the right quality. @wouwi: what's the tool used for JPEGs?
    - wouwi 12y ago
      jpegoptim and jpegtran