How to use it
- Click Choose files and pick two to nine pictures. Put them in the order you want: the first fills the first cell.
- Choose a Layout and an Output size, then set the space between pictures and any rounded corners.
- Drag a picture in the preview to choose the part that shows in its cell.
- Click Make collage, then download the PNG or JPEG.
Layouts and empty cells
The automatic grid uses as many cells as you have pictures, in the smallest square-like grid. The fixed layouts have a set number of cells: two across or stacked, a two-by-two or three-by-three grid, or one large picture with two or three small ones. When you have fewer pictures than cells, the empty cells keep the background colour, and the tool says how many are empty.
Filling each cell
Each picture fills its cell with cover: it is scaled until it covers the whole cell, and the parts that stick out are cut away. The focus decides which part stays. Drag a picture in the preview to move the focus, so a face or a subject stays in the frame. The corners can be rounded, and the spacing is the same on every side.
Output and quality
The collage is drawn at the size you choose, up to 2048 pixels. PNG keeps every pixel; JPEG is smaller and suits a photo collage for sharing. Each picture is read at full size when the collage is made, so its details are kept.
Example: four holiday photos in a square
You have four photos and want one square picture for a social media post. Choose the 2 × 2 grid, the square size, a space of 24 pixels and rounded corners of 40 pixels. Drag each photo in the preview so its subject is in the middle of its cell.
The result is one 2048 × 2048 picture with four equal cells. Each photo is cropped to its cell with the focus you set.
Frequently asked questions
How many pictures can I put in one collage?
Between two and nine. The layouts hold up to nine cells, and the automatic grid uses as many cells as there are pictures you add.
Why is a picture cut off in its cell?
A cell has a different shape from most photos, so the picture covers it and the parts at the edges are cut away. Drag the picture in the preview to move the part that shows.
Should I choose PNG or JPEG for the collage?
Choose PNG for graphics or when you need every pixel kept. Choose JPEG for photographs, where the file is much smaller and the quality is still very good.
Are my photos uploaded when I make a collage?
No. Your browser reads and draws each photo on your own device. You can check this by turning off your internet connection after the page has loaded.
Can I change the order of the pictures?
Yes. Use the arrows on each picture in the list to move it up or down. The first picture in the list fills the first cell of the layout.
Sources
- MDN: CanvasRenderingContext2D.drawImage(), placing a picture in a part of the canvas
- MDN: CanvasRenderingContext2D.clip(), the rounded corners
Figures and text last checked on Tuesday, November 10, 2026.