Understanding how images display across Guroo Academy helps you create a better visual experience for your learners. This article outlines the size requirements and best practices for banners, thumbnails, and icons in your course.
Banner Images
The minimum banner image dimensions are 1400px (width) × 300px (height). Ideally, uploaded images should match these dimensions exactly. Images that are larger or smaller than the minimum size will be automatically resized proportionally to fit. Please note that resizing smaller images may result in pixelation. Images that do not match the recommended dimensions will be cropped to fit the banner area. The image is always anchored to the top, meaning any cropping will occur on the bottom edges.
Program Banner Text Overlay & Display Behaviour
Note: This does not apply to the Page Banners.
The Program Banner is displayed with a text overlay added automatically by the platform. For this reason, it is recommended to select an image that provides sufficient contrast to ensure text readability. Additionally, the program banner may appear in multiple areas, such as the Program Homepage, Catalogue Program Page and throughout the Enrolment and Application flow.
Longer program titles or changes in screen width (such as on mobile devices) may cause the banner height to adjust. The image is always anchored to the top-left, meaning any cropping will occur on the right and bottom edges. Please keep this in mind when adding logos or brand overlays to the image.
Thumbnail Images
The minimum thumbnail size across the platform applies to all thumbnails, including those for program activities or program displays in the catalogue. The recommended dimensions are 800px (width) × 600px (height) (4:3). Images that are larger or smaller than the recommended size will be automatically resized proportionally to fit. Please note that resizing smaller images may result in pixelation. Images that do not match the recommended dimensions will be cropped to fit the thumbnail area.
Thumbnail Display Behaviour
Changes in screen width (such as on mobile devices) or depending on where the thumbnail is displayed may cause its size to adjust. The image is always anchored to the top-left, meaning any cropping will occur on the right and bottom edges. Video Thumbnails will automatically include a white ‘play’ icon centered on the image. Please keep this in mind when adding logos or brand overlays to ensure important elements are not obscured. We recommend placing logos or overlays in the top-left corner.
Icons
The minimum icon size across the platform applies to all icons, including those used for program activities and other platform areas. The recommended dimensions are 512px (width) x 512px (height). Images that are larger or smaller than the recommended size will be automatically resized proportionally to fit.
Please note that resizing smaller images may result in pixelation. Images that do not match the recommended dimensions will be cropped to fit the icon area.

Stock Icons vs Custom Icons
The platform provides a set of stock icons. Within the Theme Settings, users can choose from six different icon styles. Once a stock icon is selected and applied to a program activity, it will automatically inherit the icon colour defined in the theme settings. If the icon style is changed in the theme settings, all selected stock icons will automatically update to reflect the new style. Custom icons are not automatically themed within the platform and will remain in their original uploaded colours.
By following these image guidelines, you can ensure your visual content displays consistently and professionally across all areas of Guroo Academy.