Resize, square, and white-background up to 50 product images at once, rename them with Amazon's bulk naming pattern, and download one ZIP. Everything runs in your browser — nothing is uploaded.
100% in your browser. Your images are processed on your own device and never uploaded to any server.
Drop product images here
JPEG, PNG or WebP · up to 50 images · 0/50 added
Adds white (#FFFFFF) borders so every image is a 1:1 square, without stretching the product.
Trims surrounding background, then scales the product to fill a set share of the frame. Works best on photos already shot on white.
Amazon's main-image guidance is for the product to fill about 85% of the frame. Check your category's style guide.
The near-white trap: a background that looks white can actually be 248 or 252 grey — off-white enough that it can be flagged as a non-white background. This snaps every pixel at or above the threshold to pure 255 white.
Lower = more aggressive. Too low and white or silver parts of the product itself get blown out, so check results on light-coloured products.
85–92 is a good balance of sharpness and file size. Amazon caps upload file size, so very high values on 2000 px images make larger files.
Uses Amazon's bulk image naming pattern: IDENTIFIER.VARIANT.jpg, e.g. B0XXXXXXXX.MAIN.jpg, B0XXXXXXXX.PT01.jpg.
Mark one file as MAIN in the list; the others are numbered PT01, PT02… in list order.
Naming rules and accepted variant codes can change — confirm the current convention in Seller Central's image upload help before a large upload.
Agencies and catalog sellers: zonfy generates the full image gallery, listing copy and A+ Content for every SKU from one product link each.
How to use it
Drag in up to 50 JPEG, PNG or WebP product photos, or pick them from a folder.
Pick 1000, 1600 or 2000 px, pad to a white square, auto-crop to the product at your chosen fill, and snap near-white backgrounds to pure white.
Enter your ASIN or SKU, mark the MAIN image, and the rest are numbered PT01, PT02… — or give each file its own SKU.
Process the batch, check each result, then download everything as one ZIP or file by file.
Catalog sellers and agencies rarely fix one image at a time. Supplier photos arrive at random sizes, on backgrounds that look white but aren't, with the product floating in a sea of empty space. Fixing each one by hand in an editor is slow and inconsistent.
This tool applies the same rules to every image in the batch: a square canvas at the size you choose, a pure #FFFFFF background, and the product scaled to a consistent share of the frame. Amazon's main-image guidance is commonly summarised as a pure white background with the product filling about 85% of the frame — but requirements vary by category, so check your category's style guide.
It also renames each file with Amazon's bulk image naming pattern (identifier, variant code, extension — e.g. B0XXXXXXXX.MAIN.jpg) so the ZIP is ready for a bulk image upload. Confirm the current convention in Seller Central's image upload help before uploading large batches.
All processing happens locally in your browser using the canvas API. Your images are never sent to a server, so unreleased products and client files stay private.
No. Decoding, resizing, cropping and JPEG encoding all happen inside your browser on your own device. The images never leave your computer, and closing the tab discards them.
Amazon's bulk image upload matches files to listings by filename: the product identifier (ASIN or SKU), a dot, a variant code, and the file extension — for example B0XXXXXXXX.MAIN.jpg for the main image and B0XXXXXXXX.PT01.jpg through PT08 for additional images. Amazon can change accepted codes, so confirm the details in Seller Central's image upload help.
A background can look white on screen while its pixels are actually light grey, such as RGB 248 or 252. Amazon asks for a pure white (RGB 255, 255, 255) main-image background, so off-white backgrounds can be flagged. The near-white option snaps every pixel at or above your threshold to pure white. Set it too low and light parts of the product itself can be washed out, so review light-coloured products.
1000 px on the longest side is widely cited as the minimum for Amazon's zoom feature. Larger sizes give shoppers more zoom detail, but only if the source photo has that detail — enlarging a small photo does not add real sharpness. Many sellers use 1600 or 2000 px when their source images allow it.
They are still processed, but the tool flags them as low-resolution because enlarging a small image makes it softer. For those, try the free Product Image Upscaler first, then run them through this tool.
Auto-crop looks for the product's edges against a white or near-white background, so it works best on photos already shot on white. On busy or coloured backgrounds it may keep the full frame. For those, remove the background first with the Product Background Remover.
More free tools
Check if your main image will pass Amazon: white background, 85% fill, resolution, text and logos.
Resize to 1000/1600/2000 px, pad to square, force a pure-white background, and export Amazon-ready.
Exact dimensions for every A+ module — and crop or pad your image to fit it.