WebP Won't Upload to Your Marketplace? Here's the Fix
You hit upload, you pick your image, and the marketplace throws an error — “unsupported file type” or just a silent failure. You check the file and it's a .webp. This is one of the most common upload walls sellers run into, because some of the biggest marketplaces don't accept WebP at all. The fix is quick: convert the WebP to JPG, then upload that.
How to convert WebP to JPG so it uploads
QuickWand's free WebP to JPG converter runs in your browser — nothing is uploaded to a server.
- Open the WebP to JPG converter.
- Drag your
.webpimages into the drop zone, or click to browse. You can add the whole listing's photos at once. - Choose JPG as the output format and set quality around 90%.
- Click Convert, then download each JPG or use Download all (.zip). Upload those JPGs to your marketplace and the error is gone.
Why marketplaces reject WebP
WebP is a newer, web-focused format from Google, and marketplace upload systems haven't all caught up. Here's where things stand:
- Amazon — does not support WebP for product images. Its accepted formats are JPEG, TIFF, PNG, and non-animated GIF, with JPEG preferred.
- Etsy — does not list WebP among its accepted formats (.jpg, .gif, .png, .svg, and .heic).
- eBay — technically accepts WebP, but JPEG is recommended for product photos and is more reliable.
- Shopify — accepts WebP and even serves it automatically, but recommends uploading JPG for product images.
The pattern is clear: JPG works on every platform, every time. When a WebP upload fails, converting to JPG is the universal fix.
A note on transparency
If the WebP you're converting has a transparent background, choosing JPG will fill those transparent areas with a solid background, because JPG can't store transparency. For most listing photos that's exactly what you want. If you need the transparency preserved, convert to PNG instead — though check that your marketplace accepts transparent PNGs first, since Etsy, for example, flattens them.
Related tools
If the JPG is over the marketplace's size limit, the free image compressor shrinks it with a live preview. And for PNG photos that need the same treatment, use the PNG to JPG converter.