In-Stream Photo: Minimum 440 x 220 (2:1 Ratio) 1  Minimum to appear expanded 440 x 220 pixels (a 2:1 ratio). 2  Can tweet up to 4 images at one time. 3  Can edit images if tweeting from Twitter iOS or Android app. 4  Maximum to appear expanded 1024 x 512 pixels. 5  Appears in stream collapsed at 506 x 253 pixels on desktop.