If you would like to change your platform's login background image, please send the image to the 12Twenty Support team (firstname.lastname@example.org). The image must adhere to the following specifications:
Image Format: JPG
Max File Size: 800kb
Max Image Dimensions: 1920x1080
Minimum Image Dimensions: 1280x800
Please note that the login screen window is responsive, so the page will keep the center of the image in the center of the screen. Therefore, any element of the image that you would like to keep in view should be in the center of the image, or as close to it as possible.
Here is a good example of a background image. The students are walking in the center of the screen (both horizontally and vertically) and the image itself is very symmetrical:
Here is a bad example of a background image. The bicyclist is in the center of the screen, but her head is at the top of the screen, so it could get cropped off. It would be better if the students head were lower, closer to the center of the image.