Warning message for low quality images

How it works

Zakeke automatically checks whether the uploaded image has sufficient quality for printing. If the quality is too low, the customer receives a warning suggesting either uploading a higher-quality image or resizing the current one. 

The system triggers a low-quality warning if a customer’s uploaded image does not have enough resolution to print clearly at its current size on the product, based on the configured DPI.

The logic is simple:
“Will the uploaded image, when printed at its current size on the product and at the selected DPI, appear sharp or blurry?”

To answer, Zakeke calculates the minimum number of pixels required for the image width using the following formula:

$\frac{\text{Image width on print area (cm)}}{2.54}\times \mathrm{DPI}$

Where:

• Image width on print area (cm) – current width of the image on the product’s print area.
• DPI – dots-per-inch value defined in the selected Printing Method .

If the uploaded image has fewer pixels than required, a low-quality warning appears. If it meets the requirement, the image passes. Customers can resize the image to cover more or less of the print area. Each resize dynamically recalculates the minimum pixel requirement.

Example:

• Image width: 2000 pixels
• Resized to 20 cm → minimum required width = 20 ÷ 2.54 × 300 ≈ 2362 pixels → warning appears
• Resized to 15 cm → minimum required width = 15 ÷ 2.54 × 300 ≈ 1772 pixels → warning disappears
• Resized to 25 cm → minimum required width = 25 ÷ 2.54 × 300 ≈ 2953 pixels → warning appears again

Managing the warning message

You can manage content and options from Settings > Messages and Alerts in your Zakeke back-office.

Other than edit the content of the message, you can also:

• Disable the message if you don't want to show it to your customers.
• Enable it, but make it dismissable by the customer.
• Disable the "add to cart" button when the message appears (so that customers cannot ignore the message and place orders if the image resolution is too low).
   

Important

You can't change the way the quality check works for products sourced from integrated third-party catalogs, as you cannot change the required DPI for those products.