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This is fascinating stuff. I would love to see what the Google Photos team is doing in detail (but that will likely never happen).

• ec109685 10y ago
  Google uses lossy compression on its images, so it has more flexibility than Flickr does with regards to optimizations.
  • londons_explore 10y ago
    They likley still store the originals though, even though they don't make them available for download. YouTube does that, so that when a new video compression format comes along, they can transcode into it.
  • webmaven 10y ago
    Google uses lossy compression on it's unlimited free "high quality" image storage[0]. Storing original uncompressed images eats into the 15GB free storage budget, and uses paid storage upgrades after that. Unless you have a Pixel phone (free unlimited original uncompressed image storage). [0] https://support.google.com/photos/answer/6220791 https://support.google.com/photos/answer/6220791