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> many might be surprised that instagram only keep 612x612 images

How do we know that for sure?

They could easily have the full res versions stored elsewhere. They own them, after all.



Because the resolution shift happens client side, before the photo is transmitted to their servers.

They couldn't have the full res version stored elsewhere.

That's how we know.


How do we know the resolution shift happens client side? I did a quick google and found nothing.


It also uploads before you confirm your posting to make the process faster.


One could watch the traffic when posting a photo.


Because the uploading is damn fast.




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