Collage preset sizes

What each button writes

Open the collage and look at the Size panel. The buttons are Square, IG Story, IG Portrait, FB Post, and FB Cover. Clicking one fills the width and height fields. Export PNG then downloads collage- plus a timestamp. The canvas is drawn at pixel ratio 1, so a 1080×1350 canvas is a 1080×1350 PNG, not a doubled file.

The fields win over the button

Gap and margin are percentages of the shorter side of the canvas. Both start at 1% and stop at 20%. Roundness stops at 50% of the shorter side of a cell. A custom layout stops at 10 rows, and each row stops at 5 cells. None of those controls change the pixel size of the file. They change the gaps inside it.

1. Click a preset if it is close to the frame you want.
2. Type a width and a height if it is not. The fields replace the button. There is no second export size hiding behind them.
3. Press Export PNG. The filename is collage- and a timestamp. Gap, margin, and roundness are baked into that one PNG. They are not a separate file.

Instagram frames, without repeating the help page

The Instagram sizes page is the place that quotes the help page. Checked 2026-10-26, a feed photo is kept when its ratio sits between 1.91:1 and 3:4, and width above 1080 is sized down to 1080. At width 1080 that is a height from 566 to 1440. This page only says which collage button lands inside that range.

Square at 1200×1200 is inside the ratio, and the width is above 1080, so Instagram scales it. Type 1080 and 1080 if you want the file to already be that width. IG Portrait at 1080×1350 is 4:5. It sits inside the range. The tall edge the help page names is 3:4, which is 1080×1440. There is no button for 1440. Type 1080 and 1440.

IG Story at 1080×1920 is 9:16. Height 1920 is past 1440. Use that button for a story. If you post the same PNG as a feed photo, you are outside the range the help page describes. The tool will still export it. Instagram does the crop, not Collage87.

Facebook presets are export sizes

FB Post and FB Cover are names on buttons in this collage. They are not a size Facebook publishes as a requirement, and this page does not cite a Facebook help URL for them. The numbers come from the buttons, last checked 2026-10-26.

FB Post is 1200×630, about 1.90:1. That is near the wide edge of the Instagram range (1080×566 is 1.91:1), but it is wider than 1080. If the destination is an Instagram feed and you want the wide edge exactly, type 1080 and 566. If the destination is a wide Facebook post and the preset is enough, leave the button.

FB Cover is 1920×721, about 2.66:1. A cover is cropped differently on a phone than on a desktop. The practical rule in this tool is to keep faces and text in the center of the 1920×721 frame. The collage does not preview Facebook’s crop. It only writes the PNG.

A preset is not a layout

The size buttons do not choose 2×2 or 3×3. Layout is the other panel. Square plus 4 Photos (Grid) is a 1200×1200 file with four cells. IG Portrait plus 2 Photos (V) is a 1080×1350 file with two cells side by side. The layout guide is the one that names those buttons.

Split photo does not use these presets. A 3×3 puzzle is a ZIP of pieces from one photo, and the piece size depends on the source photo, the gap, and the margin. If you need nine files, open split photo. If you need one file at a preset size, stay here.

Questions