Best Image Format for Ecommerce Product Photos
Updated May 21, 2026
Why this matters for a store
On an ecommerce site, the images are the product. They also make up most of the page weight, and slow product pages cost sales directly — shoppers leave, and search engines rank slow pages lower. The goal is sharp product photos that load fast, and format is the first decision.
Use WebP for product photos
For the main product images, WebP is the best choice. It compresses 25-35% smaller than JPG at the same quality, so a product gallery loads noticeably faster, and every modern browser displays it. Faster pages mean lower bounce rates and better conversion.
Keep a JPG version as a fallback only if your platform must support very old browsers — most modern store platforms handle WebP automatically.
When to use PNG
Use PNG for product images that need a genuinely transparent background — a product shown with no backdrop so it can sit on any page color. PNG keeps those edges clean. Once an image is finalized, though, WebP also supports transparency and will be smaller, so WebP is still worth considering.
Avoid PNG for ordinary photographic product shots — it produces needlessly huge files there.
Never use these
- HEIC — browsers cannot display it. If your product photos were taken with an iPhone, convert them before uploading.
- BMP or TIFF — uncompressed or lightly compressed, far too large for the web.
Size and compression matter as much as format
Format alone is not enough:
- Resize to what the page uses. If product images display at 1200 pixels wide, do not upload 4000-pixel files. Resize them first.
- Compress consistently. Aim for around 200 KB for a main product image. A compress-to-200KB tool hits that target automatically, or use the image compressor for manual control.
- Be consistent. Use the same dimensions and format across the catalog so pages render predictably.
The practical recipe
Resize each product photo to your display size, convert it with JPG to WebP, and compress to roughly 200 KB. Sharp images, fast pages, happy shoppers.
For the wider picture, see the best image format for the web.