Blog Banner/Push Alert
850 pixels x 400 pixels (400 pixels is the max height, can be smaller)
under 150k file size
Blog Avatar
100 pixels x 100 pixels
under 100k file size
Digital Sign
Landscape: 3840 pixels x 2160 pixels
Portrait: 2160 x 3840
Gallery: 3840 x 2160
Sign Holder Print Size
22" x 28" (can be double sided)
Special Collections Website Banner
850 x 320 pixels; 72 dpi
Special Collections Gallery Print Sign
22" x 28" double sided
Facebook Event Image
1920 pixels x 1080 pixels
Facebook Timeline Image
1200 pixels x 630 pixels
Instagram
1080 pixels x 1350 pixels
Twitter
1200 pixels x 675 pixels