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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 I have tried that. It doesnt work. 

Amethyst requires many image sizes, including the original size. Even without the original size, rescaling for all sizes the app can use takes more space than just keeping the original.
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semisol | 4 months ago (raw) | root | parent | reply | flag 
 For profile pictures you do not need the original size usually.

Have a proper cache with mixed LRU/LFU and store 2 sizes: the original, and a smaller optimized version that can be on-demand scaled down to whatever you need.
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Vitor Pamplona | 4 months ago (raw) | root | parent | reply | flag 
 It's funny that you think I don't have a proper cache even though I use state of the art caching system.