Which shape should an Instagram post be?

Feed posts have long run from 1.91:1 landscape to 4:5 portrait, and 4:5 is the classic portrait shape: taller than square, so it takes more room in the feed. Instagram shows a preview before you post, so check there that nothing you want is trimmed. Square 1:1 is the original Instagram post shape. A story is 9:16, the full height of a phone screen.

Its longest side follows your largest picture, so a collage of phone photographs saves well above the 1080 pixels wide Instagram displays, and Instagram scales it down when you post. The exact size is printed under the collage before you download.

Can I post it straight from my phone?

Yes. Make the collage in your phone's browser, download it, and save it to your photo library: on an iPhone open it from Downloads in the Files app and choose Share then Save Image; on Android it is in the Download folder. Then pick it in Instagram as you would any photograph.

Can I split one picture across several posts instead?

That is a different job, a grid split, which the Image Splitter does: it cuts one picture into a grid of tiles, numbered by row and column. This page joins several pictures into one.

Instagram Collage Maker

Make a photo collage shaped for Instagram. This page opens on Portrait 4:5, the classic portrait shape for a feed post, with the first picture large and the rest around it. Pick Square 1:1 for a square post, or Story 9:16 for a story. Each picture is cropped to fill its cell rather than stretched, and the pictures are decoded and drawn in this browser tab, so nothing is uploaded and there is no account.

Export1920 × 2400 · PNG

Shape4:5, a portrait feed post and the shape of an 8 × 10 print.

No pictures yet. Drop some in, or use Add pictures.

· or drop them anywhere on the stage

Never uploadedNo size limitNo accountUp to 12 pictures

Layout

Gap

Background

Format

Download size

1920 × 2400

Lossless, so every pixel is kept as drawn, and the format that can keep a clear background. The download size follows the largest picture you dropped in, so a collage of phone photographs saves far bigger than it looks on this screen.

Five holiday photosfeature layout, 16 px gap
one big, two down the side, two beneath
A portrait from a phonecarries an orientation tag
saved upright, not sideways
A 40 MB camera filedecoded in this tab
no upload, no size limit but memory

Your pictures stay on this device. There is no upload, no account and no watermark, and no image byte is handed to analytics either: the only thing the page records is that the tool was used.

Common questions

Which shape should an Instagram post be?: Feed posts have long run from 1.91:1 landscape to 4:5 portrait, and 4:5 is the classic portrait shape: taller than square, so it takes more room in the feed. Instagram shows a preview before you post, so check there that nothing you want is trimmed. Square 1:1 is the original Instagram post shape. A story is 9:16, the full height of a phone screen.
How big is the file?: Its longest side follows your largest picture, so a collage of phone photographs saves well above the 1080 pixels wide Instagram displays, and Instagram scales it down when you post. The exact size is printed under the collage before you download.
Can I post it straight from my phone?: Yes. Make the collage in your phone's browser, download it, and save it to your photo library: on an iPhone open it from Downloads in the Files app and choose Share then Save Image; on Android it is in the Download folder. Then pick it in Instagram as you would any photograph.
Can I split one picture across several posts instead?: That is a different job, a grid split, which the Image Splitter does: it cuts one picture into a grid of tiles, numbered by row and column. This page joins several pictures into one.

The file you download is the canvas at the pixel size printed under it, at full resolution rather than the size shown on screen, and photographs are rotated to match their own orientation tag so a phone picture is not saved sideways. Your pictures are decoded in this tab and never uploaded, and a small source picture cannot be made any sharper than it already is.