Free tool
Community image size guide and resizer
Pick a platform and an image slot, drop in a picture, and download it at the exact size. It all happens in your browser: your image is never uploaded.
Output 1084 × 576 px · 1.88:1
Reference
Image sizes by platform
Width × height in pixels, as each platform recommends them.
Skool
| Image | Size (px) | Ratio |
|---|---|---|
| Community cover image | 1084 × 576 | 1.88:1 |
Skool also builds the ads it runs for paid communities from this cover image.
Circle
| Image | Size (px) | Ratio |
|---|---|---|
| Space cover image | 1600 × 500 | 16:5 |
| Mobile thumbnail | 800 × 450 | 16:9 |
| Welcome banner | 1680 × 600 | 14:5 |
| Course directory banner | 1279 × 680 | 1.88:1 |
| Post cover image | 840 × 300 | 14:5 |
| Pinned post cover image | 1260 × 450 | 14:5 |
| Card view thumbnail | 600 × 300 | 2:1 |
| Event cover image | 1024 × 366 | 2.80:1 |
| Mobile lock screen image | 1840 × 460 | 4:1 |
| Community logo | 240 × 60 | 4:1 |
| Space icon | 280 × 280 | 1:1 |
| Community icon | 32 × 32 | 1:1 |
| Open Graph image | 1200 × 630 | 1.90:1 |
One of Circle's mobile-app articles gives the thumbnail as 800 × 460; its image size guide, used here, says 800 × 450.
Mighty Networks
| Image | Size (px) | Ratio |
|---|---|---|
| Primary image | 1920 × 1080min. | 16:9 |
| Global header brand | 1155 × 245min. | 4.71:1 |
| Network logo | 500 × 500min. | 1:1 |
Mighty Networks gives these as minimums. A larger image with the same shape works too.
Discord
| Image | Size (px) | Ratio |
|---|---|---|
| Server banner | 960 × 540 | 16:9 |
| Profile banner | 600 × 240 | 5:2 |
A server banner needs Server Boost Level 2. A profile banner needs Nitro.
Discord doesn't publish these sizes in a guide we could verify. These are the figures in wide use, checked Nov 3, 2026.
Facebook Groups
| Image | Size (px) | Ratio |
|---|---|---|
| Group cover photo | 1640 × 856 | 1.92:1 |
Desktop shows only the middle band, about 1640 × 662. Keep text and logos inside the dashed guide.
Facebook Groups doesn't publish these sizes in a guide we could verify. These are the figures in wide use, checked Nov 3, 2026.
Mateflow
| Image | Size (px) | Ratio |
|---|---|---|
| Space cover | 1600 × 400 | 4:1 |
| Course cover | 1600 × 900 | 16:9 |
| Join page image | 1600 × 900 | 16:9 |
| Logo | 400 × 100 | 4:1 |
| Square logo | 256 × 256 | 1:1 |
| App icon | 512 × 512 | 1:1 |
| Favicon | 32 × 32 | 1:1 |
| Social share image | 1200 × 630 | 1.90:1 |
Space covers are cropped to 4:1 when you upload them, and course covers to 16:9.
Source: the upload hints in Mateflow's admin, checked Nov 3, 2026.
Community image size questions
Quick answers about cover and banner sizes.
1084 × 576 pixels. Skool's help center recommends that size for the community cover, which Skool also uses in the ads it runs for paid communities.
1600 × 500 pixels (16:5) on desktop. Circle's image size guide also asks for an 800 × 450 mobile thumbnail, so the same space looks right in the apps.
960 × 540 pixels (16:9) is the size in wide use, and the banner needs Server Boost Level 2. A profile banner is a different slot, at 600 × 240 (5:2).
1640 × 856 pixels is the size in wide use; Meta doesn't publish an official one. Desktop shows only the middle 1640 × 662, so keep text and logos inside that band.
No. The resizer reads your image and crops it on a canvas in your browser tab. Nothing is sent to Mateflow or anywhere else, and closing the tab discards it.
Building a community?
Mateflow gives you spaces, courses, events and paid memberships on your own domain. Free for up to 100 members.