Prepare a consistent product photo set
Different photo sizes make a store grid feel uneven. Choose one square size for your listing images, then use the same fit and background across the set. SellerKit creates 600, 800, 1200 or 2000 pixel square images. These are general-purpose sizes, rather than guarantees of compliance with any marketplace. Check your destination’s current specifications before publishing.
Choose padding or center crop
Keep entire photo preserves the whole product and fills any unused area with white. It is useful for tall bottles, wide accessories and items where no detail should be cut off. Fill square enlarges the image until the square is covered, then crops equally around the center. Check the preview carefully: handles, packaging text and edges may be cropped. All formats receive a white background, including transparent inputs.
Balance quality and file size
Start with JPG or WebP at 85% quality and inspect fine texture, text and edges. Lower quality can reduce download size but may introduce visible compression artifacts. PNG ignores the quality slider because it uses lossless compression. Changing formats or increasing dimensions may produce a file larger than the original; the result card shows both sizes so you can compare.
A simple listing workflow
Select up to ten photos, choose the output size, fit, format and quality, then press Resize photos. Each output has its own preview and download link. If you change settings, press Resize photos again to regenerate the batch. The originals are never modified. Processing happens in memory, so large images can be slower on phones or exceed available browser memory.
Keep pricing in the same workflow
Once your product photos are ready, check the profit margin for your listing price. Before adding a sale badge to those photos, use the discount calculator to see how much contribution remains per order.
Frequently asked questions
Are my photos uploaded?
No. The browser decodes, resizes and encodes your photos locally. Downloaded files are generated on your device.
Does resizing improve a blurry original?
No. Enlarging an image adds pixels but cannot recover missing detail. Start with a sharp, well-lit original.
Which format should I choose?
JPG usually suits product photos. WebP can offer smaller files if your destination supports it. PNG is lossless but often larger. Check the destination requirements.
What happens to transparent backgrounds?
All output uses a white background, including PNG and WebP. This gives a consistent square product image.
Can I batch resize photos?
Yes. Choose up to 10 JPG, PNG or WebP photos and download each result. Individual inputs are limited to 20 MB and 40 megapixels.