Poshmark photo size is not published as a pixel figure: its listing guide gives a count of 16 photos and no dimensions. Vinted and Mercari are the same. What you control is the long edge and the quality, and the table below pairs each job with the Smol setting.
| What you are sending | The limit you hit | The Smol setting |
|---|---|---|
| A closet shoot from an iPhone (HEIC) | Large HEIC files are slow to upload and take space | Compress, output JPG, quality 80, maximum dimension 1600 (starting points) |
| Photos for Poshmark (16), Vinted (20) or Mercari (12) | Photo counts per listing, from each app’s help page | One batch, same settings, then pick the best frames per app |
| Cross-listing the same item | Each app displays photos its own way, and none of the cited pages states a pixel size | One mid-size JPEG that works everywhere |
| Photos taken at home | GPS coordinates sit inside phone photos | Stripping is on by default; check one output file |
What is the right Poshmark photo size?
Poshmark’s own listing guide gives a count, not a size: the maximum is 16 photos per listing. It states no pixel size or resolution. Treat any exact figure you see for Poshmark as a seller’s guess until the app itself says otherwise.
That leaves you free to choose a size that is sharp on a phone screen and small to upload. A long edge of 1600 pixels is a sensible start: it keeps stitching and tags legible, and a 4032 × 3024 iPhone frame has about 12 million pixels while 1600 × 1200 has about 2 million, roughly 16% of them. That is our starting point, not a rule from any app. Upload one test photo, zoom in on the tag, and move up or down from there.
What are the Depop, Vinted and Mercari photo limits?
Vinted allows 20 photos per listing, Mercari 12, Poshmark 16. Only Vinted publishes rules about how the photos should look. This is what each cited page says, and what it leaves out.
| App | Photo count | Size or format stated? | Other rule | Source |
|---|---|---|---|---|
| Poshmark | 16 per listing | No pixel size or format on the page | Not stated on that page | Poshmark |
| Vinted | 20 per listing | No size or format on the page | First photo shows the whole item, no collages; no image editing; photos sharp and clear; no stock, ad or watermarked images | Help, Catalog Rules |
| Mercari | 12 per listing | No size, format or ratio on the page | Not stated on that page | Mercari |
| Depop | See the listing screen in the app | No Depop figure cited here | Check the live listing screen | Depop help center (not cited) |
Vinted’s catalog rules say “no image editing is allowed” and that photos must represent the item as it is. Keep your Smol settings to size and quality, and leave filters and retouching out. Smol is not a photo editor.
Which Smol settings suit resale listing photos from a Mac?
Compress to JPG at quality 75 to 80 with a maximum dimension near 1600. Those are our starting points, not thresholds measured against any app, so test one listing before a full batch.
| Photo | Operation and format | Quality | Maximum dimension |
|---|---|---|---|
| Garment and shoe shots, iPhone HEIC | Compress, output JPG | 80 (starting point) | 1600 |
| Close-ups of tags, stitching, flaws | Compress, output JPG | 85 (starting point) | 2000, Smol’s default |
| Quick listing photos in a hurry | Compress, output JPG | 75, Smol’s default | 1200 |
| Photos with a hanger or room visible | Compress, output JPG | 80 | 1600; check that nothing private shows |
Smol resizes images to fit inside 2000 × 2000 pixels unless you change it, and quality runs 0 to 100. Use Compress with the output set to JPG, not Convert: converting to JPG ignores the quality setting and writes a large, high-quality file. For the HEIC steps in detail see batch converting HEIC to JPG and converting a single HEIC.
For scale: on 24 small test photos (high-quality JPEGs, default settings, 768 × 512), Smol’s JPEGs came out 69.3% smaller. Those are small film photographs, not phone files, so your results will differ. Method and raw data are on the benchmark page.
How do I prepare a day of listing photos in one batch?
Do it once per shoot: export, drag the folder into Smol, check one file, upload. About ten minutes of setup the first time, then it is a drag and a click.
Export the day’s photos to a folder on your Mac
AirDrop or Image Capture both work. Keep the originals; by default Smol writes a copy with a
_compressedsuffix.Drag the folder into Smol
Whole folders are accepted, and HEIC is read as input.
Set output JPG, quality 80, maximum dimension 1600
Keep the resize mode on fit so no garment gets cropped.
Run it and open the biggest output
Smol shows per-file sizes. Zoom in on a tag. If it is soft, raise quality or dimension and rerun that file.
Check one file for location data
Open an output in Preview, choose Tools, Show Location Info. A stripped file shows nothing. More in stripping GPS from photos.
Upload the compressed copies
Lead with the whole item in the first photo, which is also Vinted’s rule, then tags and flaws.
How do resellers shrink photos today, and how do the options compare?
Free options come first, and for a handful of photos they are enough. The comparison of every Mac method is in compress images on Mac, every method compared.
| Option | Cost | Good for | Falls short |
|---|---|---|---|
| The app’s own upload | Free | A few photos, no prep | You do not control size or quality before upload |
| Preview: Tools, Adjust Size | Built in | One photo at a time | Manual work for large batches |
| Photos app export | Built in | Choosing JPEG and a size tier | Limited to its own export choices |
| sips in Terminal | Built in | Fast scripted resize | Command line only; no HEIC quality slider |
| Smol | $29 once | Batches, HEIC to JPG, quality, stripping | Mac only; slower than a sips loop |
For the Terminal route see the sips command. If you also sell on other marketplaces, our pages for product images for online stores and eBay listing photos use the same workflow.
Should I strip location data from resale photos?
Yes, if you shoot at home. Phone photos can carry GPS coordinates, and your living room is a location. Smol strips EXIF, GPS, IPTC and XMP from images by default, and it can be switched off.
- Verify one output with Show Location Info before trusting a batch.
- Metadata is not the only leak: a house number, a package label or a window view can place you. Read what to check before you post a photo.
- Smol runs on your Mac and uploads nothing, so the originals never leave the machine until you post.
When is Smol the wrong tool for resale photos?
Smol will not fix every listing problem. Skip it in these cases.
- You list from your phone alone and never use a Mac. Smol is macOS only.
- You need a lossless pass. Smol always re-encodes images; ImageOptim is the answer for pixel-identical output.
- You need backgrounds removed, lighting fixed or colors corrected. Smol compresses and converts; it does not edit.
- You have ten photos a week. Preview and the Photos export are free and enough.
- You need an exact byte cap. Smol sets quality and pixel size, not output bytes, so check the result against any cap you face.
Frequently asked questions
What is the Poshmark photo size?
Poshmark’s listing guide states a maximum of 16 photos per listing and gives no pixel size or resolution. Pick a size that stays sharp on a phone, such as a long edge near 1600 pixels, and test one listing before you run a full batch of photos.
What is the Depop photo size?
This page cites no Depop photo size, because it only gives figures from a help page it can quote. Check the photo screen when you create a listing. For any app, a JPEG with a long edge near 1600 pixels is a reasonable starting point; test one listing and adjust.
What are the Vinted photo requirements?
Vinted allows up to 20 photos per listing. The first photo should show the whole item without collages, photos must be sharp and clear, stock, ad and watermarked images are not allowed, and no image editing is allowed. Neither Vinted page states a pixel size or format.
What is the Mercari photo size?
Mercari’s listing guide says you can add up to 12 photos to a listing. The page states no photo size, format or aspect ratio, so choose your own long edge and quality, check how the photo looks in the app, and adjust.
Can I prepare resale listing photos from a Mac in bulk?
Yes. Drag a folder into Smol, set Compress to JPG with quality and maximum dimension, and it writes a copy of every photo beside the original. HEIC is accepted as input and metadata is stripped by default. It runs locally, with nothing uploaded.
Does compressing photos hurt how they look in the app?
Not at sensible settings. Quality 75 to 85 with a long edge of 1600 to 2000 pixels is a starting point we suggest, not a measured threshold. Zoom in on tags and stitching in one output, then raise quality if details look soft.
Keep reading
Smol for other teams