The detailed requirements for the sizes of all the images, pictures, and banners can be found right here. You can also download the specs in a PDF: Here.
General
Announcement Widget Image
File Type: JPG or PNG
Dimensions: 350 x Variable Height
Number Supported: 1
Badges
File Type: JPG
Dimensions: 400 x 400 Pixels
Number Supported: N/A
Certificates
File Type: JPG
Dimensions: 1800 x 1390 Pixels
Number Supported: N/A
Dialogue Banners
File Type: JPG or PNG
Dimensions: 770 x 150 Pixels
Number Supported: N/A
Dialogue Thumbnails
File Type: JPG or PNG
Dimensions: 350 x 200 Pixels
Number Supported: N/A
Login Page Images
File Type: JPG
Dimensions: 1920 x 1080 Pixels
Number Supported: Max of 5
Logo (Login Page & Navigation Bar)
File Type: Vector - EPS or AI
Dimensions: 170x70
Number Supported: 1
Module Thumbnails
File Type: JPG or PNG
Dimensions: 480 x 270 Pixels
Number Supported: N/A
Navigation Bar Image
File Type: Vector - EPS or AI
Dimensions: 1920 x 100 Pixels
Number Supported: 1
Page Banners
File Type: JPG or PNG
Dimensions: 770 x 200 Pixels
Number Supported: Max of 7
User Profile/Avatar Image
File Type: JPG or PNG
Dimensions: 200 x 200 Pixels
Number Supported: 1
Welcome page sidebar media?
File Type: JPG or PNG
Dimensions: 232 x 96 Pixels
Number Supported: 1
*Create twice the size for clearer image.
Restricted to Main Column
Main Column = 770 Pixel.
Buttons Widget Image
File Type: JPG or PNG
Dimensions: 770 x 195 Pixels
Number Supported: N/A
*Create twice the size for clearer image.
News Widget Image
File Type: JPG or PNG
Dimensions: 800 x 450 Pixels
Number Supported: N/A
*This will be scaled down to 770x433.125.
Pages Widget Image
File Type: JPG or PNG
Dimensions: 250 x Variable Height
Number Supported: N/A
*Create twice the size for clearer image
Restricted to Side Column
Side Column = 370 Pixel.
Buttons Widget Image
File Type: JPG or PNG
Dimensions: 370 x 92.5 Pixels
Number Supported: N/A
*Create twice the size for clearer image
Links Widget Image
File Type: JPG or PNG
Dimensions: 60 x 60 Pixels
Number Supported: N/A
Pages Widget Image
File Type: JPG or PNG
Dimensions: 375 x 60 (Minimum) Pixels
OR 375 X Variable Height
Number Supported: N/A
*Create twice the size for clearer image
Photos Widget Image
File Type: JPG or PNG
Dimensions: 370 x 370 Pixels
Number Supported: N/A
*Height adjusts based on image
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