Aspect ratio
—
Free tool
What size should this photo be?
Pick where you're posting and the tool shows the recommended size and shape — then enter your photo's dimensions to get the exact crop that fills it without stretching.
Your photo
On iPhone: open Photos, tap the photo, swipe up to see its pixel dimensions.
Nothing is uploaded — the math runs in your browser.
Recommended target
—
Pick a platform and enter your photo size.
Your crop
—
Quality
—
Clean up the photo before you post it.
Object Cleanup erases background distractions — a stray hanger, a cluttered shelf, a photobomber — on-device, so your listing and profile photos never leave your iPhone. Free to try, no weekly subscription.
Reference
Recommended photo sizes (2026)
Instagram — Portrait post — 1080×1350 (4:5)
Best-performing feed format in 2026 — fills more of the screen than square.
Instagram — Square post — 1080×1080 (1:1)
Classic square. Safe everywhere; portrait now gets more reach.
Instagram — Story / Reels — 1080×1920 (9:16)
Keep text clear of ~250px at top and ~340px at bottom — the app UI overlays those.
eBay — Listing photo — 1600×1600 (1:1)
Hit 1600px on the long side to unlock eBay zoom. Min 500px; max 7 MB per image.
Poshmark — Listing photo — 1200×1600 (3:4)
2026 app shows listing photos portrait (3:4). Square still works but is padded.
Etsy — Listing photo — 2000×2000 (1:1)
Etsy recommends ~2000px on the shortest side for crisp zoom.
Depop — Listing photo — 1280×1280 (1:1)
Square is the safe Depop default and crops predictably in the grid.
Facebook Marketplace — 1200×1200 (1:1)
Square uploads display cleanest; minimum 500px on the long side.
LinkedIn — Profile photo — 400×400 (1:1)
Displays as a circle — keep the face centered, not at the edges.
X — In-post image — 1600×900 (16:9)
Landscape 16:9 previews without being cropped in the timeline.
FAQ
How the crop math works
What size should a photo be for selling online?
For marketplaces, bigger and square usually wins: eBay rewards 1600×1600 (it unlocks zoom), Etsy recommends about 2000px on the shortest side, and Poshmark’s 2026 app favors a 3:4 portrait at roughly 1200×1600. The common rule is to upload at least 1000–1600px on the long side so buyers can zoom in. This tool shows the recommended target for each platform and the largest crop your photo can fill.
How do I crop my photo to the right shape without stretching it?
Never stretch — crop. Enter your photo’s width and height above and pick a platform; the tool calculates the largest centered crop that matches the target shape (for example, trimming a 4032×3024 iPhone photo to 3024×3024 for a square listing). You keep full resolution and lose only the edges, instead of distorting the whole image.
My photo is smaller than the recommended size — is that a problem?
It still uploads, but the platform upscales it, which can look soft. The tool flags when your cropped photo is below the recommended target so you know it will be enlarged. iPhone photos are almost always large enough; the usual issue is screenshots or images saved from the web.
Does this tool upload or see my photos?
No. You type the pixel dimensions (Photos → tap a photo → swipe up, or the Files info panel shows them) and the math runs entirely in your browser. Nothing is uploaded or stored. To clean up a listing photo before you post it, Object Cleanup removes background distractions on-device, so your photos never leave your iPhone.
Prepping photos to sell? Read how to remove a person from a photo on iPhone or browse the Object Cleanup and Background Remover pages.