← Back to Ummity

Photo guidelines

How to get crisp, well-framed photos everywhere they appear.

When you add a photo, we let you frame it to the right shape first, then save that framed version. That way your photo looks the same — and your subject stays in view — on every screen, whether you’re on the website or the mobile app. Here’s what to expect.

Shapes & sizes by type

Each kind of photo is cropped to a fixed shape so cards and banners line up neatly:

PhotoShapeBest size (or larger)
Marketplace listing photos (up to 8)4:3 landscape1600 × 1200
Event, news & fundraiser covers16:9 wide banner1600 × 900
Business & community logos1:1 square1024 × 1024
Chat photosAny — not croppedShown in full

You can zoom and drag to choose exactly what’s in frame before saving.

Formats & file size

  • We accept JPEG, PNG, WebP, and HEIC (the format iPhones use).
  • Maximum file size is 10 MB. We automatically shrink large photos for you before they upload, so most end up well under that.
  • Logos are saved as PNG so a transparent background stays transparent.

Why was my photo rejected?

“This photo is too small.”

For a sharp result, photos need a minimum resolution — at least 1080 × 810 for listings, 1280 × 720 for covers, and 512 × 512 for logos. Zoom out in the cropper, or pick a higher-resolution image. (Zooming in too far on a small photo can also push it under the minimum.)

“Couldn’t read this image” on a computer.

Desktop browsers can’t open Apple’s HEIC photos. On a computer, export the photo as JPEG first — or just upload it straight from your phone, where HEIC works fine.

Tips for the best-looking photos

  • Start with the highest-resolution photo you have — you can always crop down, but not up.
  • Keep the subject roughly centered so it survives the crop on every screen.
  • For covers, choose a wide shot with room on the sides; for logos, a clean square works best.
  • Good lighting and a simple background make listings and covers pop.

On mobile

The mobile apps follow these same shapes and sizes, so a photo you add on your phone looks identical on the website and vice-versa. This page works on your phone too — you can open it any time from a photo field.

Need more help? Reach your community’s admins, or contact us through Settings.