Mercari listing photo size spec (2026)
Mercari doesn't publish an official pixel spec, but the reseller-community standard — and what the app actually renders — is 1200 × 1200 pixels in 1:1 square. Every Mercari feed thumbnail is a square crop, so anything you upload that isn't square gets clipped from center. Pre-resizing to 1200 × 1200 is the only way to control exactly what buyers see in the grid.
| Spec | Mercari requirement |
|---|---|
| Recommended size | 1200 × 1200 px (1:1 square) |
| Official pixel spec | Not published — community standard |
| Accepted formats | JPG, PNG |
| Media per listing | Up to 12 photos + 1 video |
| Auto-crop | Non-square uploads cropped to 1:1 |
Source: Mercari Help — How to Take Great Photos
Mercari's auto-crop and how to avoid the shoe/sleeve problem
Mercari's feed renders every listing thumbnail as a square crop, and the app auto-crops non-square uploads from the center — phone photos in portrait routinely lose shoes, sleeves, and price tags. Pre-resizing to 1200 × 1200 square is the only way to control exactly what buyers see.
Mercari doesn't publish an official pixel spec, but the app displays thumbnails at roughly 1200 × 1200 on Retina phones. Over-uploading at 3000+ px doesn't help — Mercari's backend re-compresses to around 2 MB per photo regardless.
How to resize Mercari photos in bulk
- Drop your listing photos into the tool above — drag-drop, click, or paste straight from the clipboard.
- Keep Crop to fill so the item fills the square thumbnail; switch to Fit with padding when you need the full shoe or garment silhouette on clean white.
- Click Resize for Mercari. Every photo is converted locally on your device — nothing is uploaded.
- Click Download All for a ZIP, then upload the square JPGs through the Mercari app's listing flow.
Mercari photo tips that convert
- Crop to square yourself. Pre-resizing to 1200 × 1200 stops Mercari's center auto-crop from clipping shoes, sleeves, or tags.
- Fill the frame. Top-converting cover photos have the item taking up 70%+ of the square — distant shots look like clutter in the feed grid.
- Shoot in natural daylight on a clean neutral backdrop. Mercari buyers scroll fast; a bright, uncluttered cover stops the thumb.
- Use most of your 12 slots. Mercari's own data shows listings with 8+ photos sell faster than those with 3–4 — add tags, flaws, and detail shots.
- Add a short video on mid-to-high-ticket items. Mercari allows one 10–30s clip per listing, and movement converts on drape, sparkle, and condition.
Frequently asked questions
What's the best photo size for Mercari listings in 2026?
The reseller-community standard is 1200 × 1200 pixels in 1:1 square format, matching Mercari's feed thumbnail rendering. Source: Mercari Help — How to Take Great Photos.
Does Mercari publish an official pixel spec for listing photos?
No — Mercari's Help Center covers composition tips but doesn't specify pixel dimensions. Industry-standard 1200 × 1200 comes from measured feed rendering.
How many photos can I add per Mercari listing?
Up to 12 photos. Mercari's data shows listings with 8+ photos sell faster than those with 3–4.
Why does Mercari crop my photos weirdly in the feed?
Because any non-square upload gets auto-cropped from center to fit square thumbnails — often clipping shoes or sleeves. Resize to 1200 × 1200 square before upload.
Are Mercari and Poshmark photo requirements the same?
Close but not identical. Both use 1200 × 1200 squares. Differences: Mercari allows 12 photos (Poshmark 16); Mercari has no portrait option; Mercari allows videos.
JPG or PNG for Mercari photos?
JPG is the default and performs best — smaller, universally compatible, matches what Mercari serves to shoppers.
Can I add videos to Mercari listings?
Yes — Mercari allows 1 short video per listing (roughly 10–30 seconds). Video significantly boosts conversion on mid-to-high-ticket items.
What makes a top-converting Mercari cover photo?
Three factors: (1) item fills 70%+ of frame, (2) clean neutral backdrop, (3) natural daylight lighting.
Does Mercari compress my uploaded photos?
Yes — Mercari re-encodes to roughly 2 MB and delivers JPEG to all clients. Uploading at 1200 × 1200 minimizes the extra compression.
Can I cross-list the same photos from Poshmark to Mercari?
Absolutely. 1200 × 1200 is the shared spec. Resize once and upload to both via the platforms' apps or a cross-listing tool like List Perfectly.
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