This can happen because the file size (of the image) is too large. Incorrect file sizes can also cause sites and apps to load very slowly.
Below is a list of recommended image file sizes. You can also read more about editing and resizing images in our Education Resources article on this topic .
NOTE: The image sizes below may also vary depending on what device is being used to view the site, app, etc.
Image Dimensions in EventsAir
Contact Photos – Square | 600x600 pixels |
Contact Photos – Passport | 600x800 pixels |
Attendee App (Modern theme) | 144 x 144 pixels (only appears inside EventsAir - useful if you have multiple apps) |
Attendee App (Modern theme) | Minimum 96px high and width:height ratio of at least 3:1 or 4:1, or greater. |
Attendee App (Modern theme) Splash image | 640 x 960 pixels - appears briefly when app is loading. |
Attendee App (Modern theme) | 1600 x 900 - margin of 250px on all edges if text/logo must appear to allow for resizing (central 'safe area' of 1100 x400 will NOT be cropped even when scaling for different devices). |
Attendee App (Modern theme) | In Modern theme, leave blank OR add a plain image and ensure high contrast with text. |
Attendee App (Modern theme) | 1440 x 288 (5:1 ratio) |
Attendee App – Icon | 144x144 pixels (only appears inside EventsAir) |
Attendee App – Splash Image | 640x960 pixels |
Attendee App – Header | 1440 pixels wide (any height is accepted) |
Attendee App – Background Image | 1440x2880 pixels |
Organizer App – Icon | 144x144 pixels |
Organizer App – Splash Image | 640x960 pixels |
Organizer App – Header | 1440 pixels wide (any height is accepted) |
Organizer App – Background Image | 1440x2880 pixels |
Event website – Header & Footer | 1200 pixels wide (any height is accepted) - this is a MINIMUM image size for viewing on mobile. You may have more success with images that are 1920 x1080px. |
Interactive Sites – Header & Footer | 1000 pixels wide (any height is accepted). Again, sites viewed on a mobile device may look different and you should test other options. |
Interactive Sites– Hotel Images | 371x255 pixels |
Email - Header & Footer | 640 pixels wide (any height is accepted) |
App Store Apps – Header & Footer | 1000px wide (any height is accepted) |
Image Dimensions in OnAIR
Remote Attendee Portal |
|
Session Thumbnail | 1920x1080 pixels |
OnAIR 2D Mode |
|
Portal Sponsor Images | 870x155 pixels |
Sign In Screen | 890x940 pixels |
Header Bar Image | 360x50 pixels |
Gamification Icon | 144x144 pixels |
Lower Thirds Background Images | 132x1280 pixels excluding logo (transparency allowed) |
Lower Thirds Logo | 144x144 pixels |
OnAIR 3D Mode |
|
Poster Lobby & Exhibition Hall Background | 1920x1920 pixels |
Exhibition Hall Panorama Image | 3840x1920 pixels |
Standard Exhibition Stand | 940x650 pixels |
Large Exhibition Stand | 1400x650 pixels |