What are the dimensions of the 4iE custom background image?

The 4iE custom background screen is 320 x 240 px. However, image scaling is not required thanks to auto-scaling when you upload your custom background.

Tips: Make sure the image you use has a 4:3 landscape aspect ratio (standard camera aspect ratio), to avoid the image being stretched when we scale it. We accept jpg, png, HEIC. Not PSD etc.

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https://warmupedia.warmup.com/questions/connect-4ie-wifi/

https://warmupedia.warmup.com/questions/how-do-i-register-a-4ie/