Maximum file size
All files uploaded to the platform must be smaller than 2MB.
On-site messages can be created as alert or pop-up style. Guidelines are provided for each style.
Alert
Suggested dimensions: 256x256 px (must be squared)
Valid image formats: PNG, JPG (JPEG), GIF
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Pop-up
For pop-ups we recommend that you create a number of templates that implement your brand guidelines for pop-ups, with different button types (e.g., two-button CTA). On those templates, you can set brand colours as outlined below. First navigate to the templates section (Content > Templates) and select on-site message:
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Once in the editor select pop-up and click on the paint brush to edit the colour palette used for key components.
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This graphic illustrates how settings map to the various components of the pop-up:
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Once you have templates setup with the default colour values, you can add images when creating individual pop-up campaigns.
Image dimensions
Dimensions: The maximum image size is 2000x2000 px. The image height setting (auto by default) will resize the displayed image proportionately.
Valid image formats: PNG, JPG (JPEG), GIF (animated too)
.png?sv=2026-02-06&spr=https&st=2026-07-03T07%3A33%3A31Z&se=2026-07-03T07%3A44%3A31Z&sr=c&sp=r&sig=UdK0Y5TpVsl5Pqt6llddU2pU2PLlML3S%2BXtNLvEF47U%3D)