What is the default sizings for Instagram images?
Instagram standard image sizing is as follows:
Square Image: 1080px in width by 1080px in height
Vertical Image: 1080px in width by 1350px in height
Horizontal Image: 1080px in width by 566px in height
Instagram and Socialdraft will take other sizing between 566px and 1350px in height but the maximum size for allof the image formats are set to 1080px.