How to Fix Error 20012: Image Size Limit Exceeded on Amazon
Error 20012 is thrown when a product image’s longest side exceeds 10,000 pixels or its shortest side is under 500 pixels, and only JPEG, TIFF or PNG formats are accepted. Sellers must resize the image to ≤10,000 px (and ≥500 px on the short side) and re‑upload via the Seller Central listing editor.
Overview
Amazon sellers encounter error 20012 when an uploaded product image exceeds the platform’s size limits. The issue appears during listing creation or image updates and can halt the publishing process. Resolving the error quickly keeps catalog timelines on track and prevents missed sales opportunities.
Key Points
- Maximum dimension — The longest side of any image must not be larger than 10,000 pixels; a 12,500‑pixel width will trigger error 20012.
- Minimum dimension — The shortest side must be at least 500 pixels; a 400‑pixel height will be rejected even if the longest side is within limits.
- Supported formats — Amazon accepts JPEG (.jpg/.jpeg), TIFF (.tif/.tiff) and PNG (.png); a BMP file will be blocked.
- Resolution impact — High‑resolution files from DSLR cameras often exceed the pixel cap despite modest file size, leading to the error.
- Aspect‑ratio pitfalls — Panoramic shots or heavily cropped images can have one side that unintentionally crosses the 10,000‑pixel threshold.
- Error scope — The problem does not affect account health metrics, but it stops image uploads and delays listing activation.
How to Fix Error 20012
- Check image dimensions — Open the file in any image viewer or right‑click → Properties → Details to see width and height. For example, a 13,200 × 7,800 pixel JPEG will show the longest side as 13,200 pixels, which is over the limit.
- Resize to compliant size — Use an editing tool (Photoshop, GIMP, or a free online resizer) to shrink the longest side to 10,000 pixels or less while keeping the shorter side above 500 pixels. If the original is 13,200 × 7,800, set the width to 10,000 pixels; the height will automatically adjust to about 5,909 pixels, preserving aspect ratio.
- Maintain aspect ratio — Ensure the “constrain proportions” option remains active during resizing to avoid distortion. A product photo of a coffee maker should retain its original shape after scaling down.
- — Save the resized file as JPEG, TIFF, or PNG. If the original was a TIFF, you might convert it to JPEG to reduce file size while staying within format rules.
Analysis & Recommendations
Why This Matters
A non‑compliant image (e.g., 12,500 × 9,000 px JPEG) will be rejected, pausing the product launch and potentially delaying sales. Fixing the dimensions restores the publishing flow, keeping catalog timelines on schedule and preserving conversion rates.
Key Takeaways
- Maximum dimension is 10,000 px; a 12,500‑pixel width triggers error 20012.
- Minimum dimension is 500 px; a 400‑pixel height is rejected even if the long side is within limits.
- Supported formats are JPEG, TIFF, and PNG; BMP files are blocked.
- Resizing a 13,200 × 7,800 px image to 10,000 × 5,909 px (or 9,800 × 7,050 px) resolves the error and allows the listing to go live.
Recommended Actions
- →Check image dimensions: open the file properties or run a script (e.g., Python) to verify width ≤10,000 px and height ≥500 px before uploading.
- →Resize the image: use Photoshop, GIMP, or ImageMagick to set the longest side to ≤10,000 px while keeping the short side ≥500 px, preserving aspect...
- →Re‑upload the corrected file: in Seller Central, go to the listing editor, replace the image with the resized JPEG/PNG/TIFF, and save the changes.
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