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Amazon image size requirements checker
Amazon's technical image spec has four hard parts: 500–10,000 px longest side, at least 72 dpi, an accepted format (JPEG/TIFF/PNG/GIF), and RGB color. This tool checks the measurable parts of a photo locally in your browser.
100% local · FileReader + canvas · nothing uploaded
How to use it
The four parts of Amazon's spec
The measurable parts of Amazon's technical requirements are pixels, format and file size; DPI and color mode live in the file's export settings rather than the pixels themselves. Drop a photo to see the pixel and format verdict immediately. For DPI and color mode, check your editor's export dialog: choose at least 72 dpi, RGB (not CMYK), and save as JPEG for the smallest reliable file. The fourth requirement — naming — matters most when you upload in bulk: files must be named product ID + variant code + extension, such as B000123456.MAIN.jpg, with periods only, no spaces or dashes.
Real numbers
Amazon technical specifications
| Requirement | Specification |
|---|---|
| Image size | Longest side 500–10,000 px (required) |
| Resolution | At least 72 dpi (required) |
| Color mode | RGB (preferred) |
| Supported formats | JPEG, TIFF, PNG, non-animated GIF; JPEG recommended |
| File naming | Product ID + variant code + extension (B000123456.MAIN.jpg) |
| Main image background | Pure white, RGB 255,255,255 |
Source: Amazon Seller Central, Product Image Requirements (G1881), verified 2026-09-20 — sellercentral.amazon.com/help/hub/reference/external/G1881
Practical guide
Export settings that pass first try
- Export at source resolution. If your camera shoots 4000 px and you export at 2000 px on the longest side, you stay inside the window with room for zoom and crops. Never upscale a smaller file to meet the minimum.
- Choose JPEG for photos, PNG for graphics. Both are accepted. JPEG keeps product photos small and sharp; PNG is fine for flat graphics and is also in the accepted list.
- Watch CMYK exports. Design tools sometimes default to CMYK for print work. Amazon prefers RGB, and converting later can shift colors — export for web as RGB from the start.
- Name files for the uploader. Spaces or dashes in the filename stop the file from uploading in bulk flows. Use dots only: B000123456.MAIN.jpg.
Amazon's file-naming rule exists because bulk uploads are matched by filename, not by a separate label: the product identifier can be a barcode number, ASIN, UPC, ISBN, EAN, GTIN or JAN, followed by a period, the variant code, a period and the extension — for example B000123456.MAIN.jpg. Spaces, dashes or any other separator break the match and stop the file from uploading. If you use a digital asset management system or a spreadsheet to track images, bake the final filename into the export step so the name on disk is always the name Amazon expects. The 72 dpi minimum and RGB preference are part of the same technical spec, so check them in your editor's export dialog alongside the pixel size.
The DPI number in Amazon's spec is worth demystifying: DPI only matters when an image is printed or scaled to physical size, so a 72 dpi image and a 300 dpi image with the same pixel dimensions look identical on screen. What actually protects quality is pixel resolution, which is why this checker reads dimensions rather than DPI metadata. The practical workflow is to export from your editor at the pixel size you need (1000–2500 px longest side), keep the color mode RGB, and let the DPI tag ride along at whatever your editor defaults to — Amazon's 72 dpi minimum is rarely the thing that fails an export. If you also use images for print marketing, keep separate print masters at 300 dpi and never feed those straight into Amazon.
FAQ
Common questions
What are Amazon's image size requirements?
The longest side must be 500–10,000 pixels, resolution at least 72 dpi, color mode RGB, and the file must be JPEG, TIFF, PNG or non-animated GIF. Naming follows product ID + variant code + extension.
Does Amazon check DPI on product images?
Yes, Amazon lists a minimum 72 dpi in the technical requirements. In practice pixel dimensions matter most, but exports below 72 dpi are outside the spec.
How are Amazon image files named?
Files use product identifier + variant code + extension separated by periods, for example B000123456.MAIN.jpg. Spaces, dashes or other characters block the upload.
What is the MAIN variant code?
MAIN marks the main image that shows in search results and first on the product page. Other codes include SWCH (swatch), PT01–PT99 (alternate views) and DTLS (multi-pack).
Why does Amazon prefer RGB color mode?
Amazon's spec lists RGB as the preferred color mode for product images. Files exported in CMYK can shift color when converted, so export web images as RGB.
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