Social Square 640

640 x 640 px sRGB 1:1 square

A 640 by 640 px square. A legacy square size from earlier Sketchpad versions; modern square social workflows have standardized on 1080 px.

about a phone-screen-wide square

About this size

The 640 by 640 square was the standard Instagram upload size before Instagram raised the bar to 1080. Files at this size still display on every platform but get upscaled to the modern resolution baseline, which can introduce softness. New work targeting square social formats should use 1080 by 1080.

Small square posts
Profile graphics
Icons

Pro tips

1 A legacy size. For new square social work, use the 1080 by 1080 Instagram Square template instead.
2 Files at 640 by 640 get upscaled by Instagram, which introduces slight softness. The original 640 standard has not been the platform default for years.
3 Still useful for legacy workflows or specific platforms (older link-preview standards) that target the smaller square size.