What image sizes are recommended for Skio features?

Unless otherwise noted, images must be uploaded in a supported format (SVG, PNG, JPG/JPEG, or GIF) and be no larger than 2 MB.

The following outlines image requirements by feature area, including upload method, recommended dimensions, file size limits, and supported formats.

Customer Portal v2

Banner image

• Upload method: Image URL

• Preferred aspect ratio: 16:9

• Validation: Must be a valid http:// or https:// URL

• Optional: Banner image link (click-through URL)

Loyalty logo

• Upload method: Image URL

• Validation: Valid URL format

Customer Portal CPv3

Login splash image (desktop)

• Upload method: Drag-and-drop file upload

• Recommended aspect ratio: 3:4 (portrait)

• Max file size: 2 MB

Login splash image (mobile)

• Upload method: Drag-and-drop file upload

• Recommended aspect ratio: 3:1 (landscape)

• Max file size: 2 MB

Subscription custom banner (desktop & mobile)

• Upload method: Drag-and-drop file upload (separate images for desktop and mobile)

• Recommended aspect ratio: 3:1 (for example, 1200 × 400 px)

• Max file size: 2 MB

• Optional: Banner link (click-through URL)

Loyalty brand logo

• Upload method: Drag-and-drop file upload

• Max file size: 2 MB

Build-A-Box

Box cover image

• Upload method: Drag-and-drop file upload

• Max dimensions: 800 × 400 px

• Notes: Displayed on the storefront and Shopify product page. No strict file size limit is enforced, but smaller files are recommended for performance.

Journeys

Banner (desktop & mobile)

• Upload method: Image URL

• Recommended aspect ratio: 3:1

• Optional: Banner link (click-through URL)

Referrals

Referral block – promotional image

• Upload method: Drag-and-drop file upload

• Recommended aspect ratio: 2:3

• Max file size: 2 MB