Mercari Listing Photo Size
Mercari displays a square thumbnail, and the first photo drives nearly all of the click-through.
Finding the best quality that fits…
- Original
- —
- Result
- —
- Reduction
- —
- Dimensions
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How to use this tool
- Select your file, drag it onto the box above, or paste it from your clipboard.
- Processing starts automatically — there is nothing to configure.
- Check the result panel, which shows the original size, the final size and the output dimensions.
- Click Download to save it.
Marketplace image rules are part technical requirement and part commercial lever — some thresholds unlock features like zoom that measurably affect conversion.
The specification
| Shape | Square (1:1) |
|---|---|
| Recommended | 1080 × 1080 pixels |
| Photos per listing | Up to 12 |
Why uploads get rejected
Meeting the size is only part of it. These are the failures that actually come up:
- The photo is cropped awkwardly because it was shot in portrait.
How it works
Most compressors pick a fixed quality level and hope for the best, which is why they either overshoot the limit or land far below it and throw away detail you did not need to lose.
This tool runs a binary search instead. It encodes your image at a mid-range quality, measures the resulting file, then narrows the range — higher if there is room, lower if it is over — repeating seven times. It keeps the largest result that still fits. If the lowest quality is still too big, it reduces the pixel dimensions and searches again.
All of it runs on your own device using the browser's canvas API. Nothing is transmitted.
Who uses this
Mercari sellers preparing listing photographs.
Frequently asked questions
What image size does Mercari need?
Square (1:1). This tool outputs 1080 × 1080 pixels.
Why does image size affect sales?
Several marketplaces gate features on resolution — zoom in particular. Buyers who cannot zoom cannot inspect condition or detail, and they buy less as a result.
Can I use one image across marketplaces?
Largely yes. A 2000 × 2000 white-background JPEG satisfies Amazon, clears eBay’s 1600 px zoom threshold, and sits just under Shopify’s 2048 px recommendation. Export a copy under 1 MB for Etsy and you have covered all four.
Does this remove the background?
No. It places your image on a white canvas, which handles transparent PNGs correctly, but it cannot cut a product out of a photographed background.
Are my files uploaded to a server?
No. Everything runs inside your browser on your own device. Your file is never transmitted and never stored by us. You can confirm this by opening your browser’s Network tab while you use the tool — you will see no upload request.
Is there a limit on how many files I can process?
No. There is no daily cap, no account, and no watermark. Because the work happens on your device rather than our servers, there is nothing for us to ration.
Is this tool really free?
Yes — no account, no trial, no watermark, and no cap on usage. It runs on your own device rather than our servers, so there is no cost for us to pass on.
Does it work on mobile?
Yes. The interface adapts to phone and tablet screens, and everything runs in the browser, so there is no app to install.
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Your files stay on your device. This tool runs entirely in your browser. No file is uploaded, transmitted, or stored. You can verify this by opening your browser's Network tab while using the tool.
Disclaimer. Specifications published by exam boards, governments and platforms change without notice. We verify and date every specification on this site, but you should always confirm against the official source before submitting an application. See our full disclaimer.