Why a fit-inside image can be smaller than your target box
Understand the difference between bounding dimensions and an exact-size canvas before exporting product pictures.
Treat the box as a limit
Fit inside keeps an image within the width and height you choose while preserving its shape. The selected dimensions describe a bounding box, not necessarily the final canvas. A tall image and a wide image can therefore produce different output dimensions from the same settings.
The 0UB fit-inside mode does not enlarge a smaller source. If the original already fits within the selected box, the result can remain smaller. Increasing the target numbers alone does not promise a larger or sharper product photograph.
Choose an exact canvas only when necessary
White padding and center crop produce the requested canvas dimensions. Padding keeps the entire picture visible and fills the surrounding space with white. Center crop fills the frame but can remove edges, so a product photographed close to the border may need another choice.
Decide whether consistent rectangular dimensions or keeping the complete product is more important for your destination. Check the destination instructions yourself; the available modes are workflow options, not a promise of compliance with any marketplace or social platform.
Verify a downloaded sample
Use one image to compare the resize modes. Download each result and inspect its actual pixel dimensions, product placement, and background. A preview can show the overall composition, but it does not replace opening the finished file.
Keep the source photo and record the chosen width, height, and mode before processing more images. Single-image processing remains free; batching and ZIP downloads require a pass. If a device has limited memory, use smaller batches and check any reported failures rather than assuming every source was exported.