This page shows how the number of frames in the rotatable photo affects the smoothness of the rotation, as well as the file size.

16 frames is enough for most items and the most popular choice as it's a good compromise between file size and smoothness, but more complex items can benefit from more frames.

Each example is 200 pixels wide x 174 pixels high.

16 frame rotation = 102KB
 

24 frame rotation = 151KB
 

32 frame rotation = 200KB
 

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