BigCommerce Product Image Size (2026): 1280×1280, 8 MB Limit and Variant Images

BigCommerce product image size, in short: upload square images of about 1280×1280 pixels, the size BigCommerce gives as optimal and the largest it serves for zoom. Each product or variant image can be up to 8 MB, a product can have up to 1,000 images, and each variant gets one image. Use JPG, PNG, GIF or WebP; TIFF and PDF aren't supported.

More on this topic: Marketplace image requirements, every guide in one place.

Third-party guides quote anything from 800 to 2000 px for BigCommerce. The platform's own help and developer docs are clearer: thumbnails and listing images are generated from your original, and zoom images larger than 1280×1280 are resized down. This guide covers the official limits, the ratio to use, variant images, file size and how to bring a catalog of mixed supplier photos up to one standard. The free marketplace image resizer exports any custom size, including 1280×1280, in your browser.

What size should BigCommerce product images be?

1280×1280 pixels. BigCommerce's help center calls that the optimal size and generates thumbnails and smaller versions from your original. Its API documentation notes that zoom images larger than 1280×1280 come back resized, so uploading much bigger files adds upload time without a sharper zoom.

BigCommerce's product image limits in its help center and developer documentation were checked in October 2026. Marketplaces change their rules, so confirm the current requirements in your seller dashboard before you upload a large batch.

If you also sell on Amazon or Shopify, keep a larger master file (2000–2048 px) and export a 1280 px copy for BigCommerce. See Shopify product image size and Amazon product image requirements for those channels.

What aspect ratio should BigCommerce product images use?

Square (1:1) for most stores. Theme product cards and category grids are designed around consistent shapes, and a catalog where every image is square lines up cleanly on desktop and mobile. If you sell mostly clothing, a portrait ratio can work, but use it for every product.

Mixed shapes are the most common problem in imported catalogs: supplier images come in every size, and the category page looks ragged. Pad each one to a square instead of cropping, so no part of the product is cut off. The free square image maker does that with white, any color or a blurred background.

Why are my BigCommerce product images blurry?

Usually because the original is smaller than the space the theme displays it in, or because a small image was stretched before upload. Thumbnails and zoom are generated from what you upload, so a 600 px original can't produce a sharp 1280 px zoom.

• Check the original size: open the file on your computer and confirm it's at least 1280 px on the longest side.
• Don't stretch small images in an editor; that just blurs pixels. Upscale them with AI or reshoot.
• Avoid heavy compression: JPG quality below about 70% shows blocky artefacts on product edges.
• Trim excess white space: a product that fills only half the frame looks small and soft in category grids. Aim for the product filling about 80–85% of the square.

The AI image upscaler enlarges a photo 4× for 3 credits, so a 400 px supplier image becomes 1600 px, enough to export a sharp 1280 px version. How to edit supplier product photos covers cleaning up imported images.

How do variant images work on BigCommerce?

Each variant (for example, a specific color and size) can have one image, which replaces the main image when a shopper selects that option. The product itself can hold up to 1,000 images for the gallery.

1. Photograph or generate one clear image per color, at the same angle, size and background as the main image.
2. Export each at 1280×1280 px and under 8 MB.
3. Upload them to the product's image gallery, then assign each one to its variant.
4. Check on mobile that switching options swaps the image and the framing stays consistent.

What file size and format should I use?

JPG at around 80% quality for photos, PNG for cutouts or graphics that need transparency, and WebP if your workflow produces it. Keep files well under the 8 MB limit; a 1280×1280 JPG is usually a few hundred kilobytes when compressed sensibly.

The free image compressor reduces JPG, PNG and WebP files in your browser. See JPG vs PNG vs WebP for product images for the trade-offs.

How should I name BigCommerce product images and write alt text?

Name each file with the product and variant before uploading, and fill in the image description (alt text) for every image in the product's gallery. File names and alt text help image search and accessibility, and they make a 1,000-image catalog far easier to manage.

Describe what the image shows in plain words, one short sentence, without stuffing keywords. Our product image alt text guide has examples for every product type.

How do I resize a whole catalog for BigCommerce?

Pick one master spec, apply it to every image, and re-upload. A consistent catalog looks more trustworthy than a few perfect images among dozens of mismatched ones.

1. Decide the spec: 1280×1280 px, square, white background, product filling about 85% of the frame.
2. Make the main image of each product white: AiArter's white background tool cuts the product out onto pure white for 4 credits.
3. Upscale anything under 1280 px with the AI upscaler.
4. Resize everything to 1280×1280 with the free resizer (custom size, pad with white).
5. Compress, rename files with the SKU, and upload.

Also useful: website image sizes for banners and category images, and how to keep product photos consistent.

Frequently asked questions

What is the best image size for BigCommerce?

1280×1280 pixels, square. BigCommerce calls it the optimal size and generates thumbnails from the original.

What is the maximum image file size on BigCommerce?

8 MB per product or variant image, including images added by URL.

How many images can a BigCommerce product have?

Up to 1,000 images per product, and one image per variant.

What image formats does BigCommerce support?

JPEG/JPG, PNG, GIF and WebP. TIFF and PDF aren't supported.

Should I upload images larger than 1280 px?

You can, but zoom images larger than 1280×1280 are resized down, so larger uploads mostly add file size. Keep a bigger master for other channels.

Why do my BigCommerce images look blurry?

The original is probably smaller than the display or zoom size, or was stretched or over-compressed. Upload at least 1280 px and upscale small originals with AI.

Can I use animated GIFs on BigCommerce?

Yes, up to 150 frames and 5120×5120 px, but short videos or still images usually load faster.