Put two photos side by side

Put two to twenty photos on one canvas, as a grid, a mosaic, a filmstrip or placed by hand, and download the result as a single picture.

Drop your files here

.jpg, .jpeg, .png, .webp, .avif · up to 50 MB

Choose files

How to Build the collage

1
Add your photos
JPG, PNG, WebP or AVIF, two to twenty of them, up to 50 MB each and 300 MB in total. Drag the cards to set the order.
2
Pick a layout and set the gaps
Grid, mosaic, filmstrip or free placement. Gap, padding, background colour, corner radius and shadow all update the preview as you move them.
3
Download the collage
One file comes back: collage.jpg, or collage.png if you asked for a transparent background.

Two strips on a square canvas

Add two photos and the page lays them out with “Filmstrip, across” under “Layout” and the 1080 × 1080 square under “Canvas size”. With a “Margin around the edge” of 24 pixels and a “Gap between photos” of 12, each photo gets a strip of 510 × 1032 pixels. The photo fills its strip, and what does not fit is cut equally from both sides, so the middle stays. Nothing is stretched. In our check on October 21, 2026, a landscape phone photo of 4032 × 3024 kept the middle 37 percent of its width. An upright 3024 × 4032 photo kept 66 percent, and a 16:10 one only 31.

Which canvas keeps more of each photo

The shape of the canvas decides the crop. On 1920 × 1080 the strips grow to 930 × 1032 pixels. There the landscape photo kept 68 percent of its width, and the upright one its full width and 83 percent of its height. The story canvas, 1080 × 1920, is the worst for a wide photo, which kept 20 percent. Two landscape photos for a square post fare better one above the other. With “Filmstrip, down”, each kept its full width and 66 percent of its height, or 79 for the 16:10 photo.

Both photos whole: a canvas in their shape

The two strips are always the same size, so an upright photo next to a landscape one always loses something. Two photos of the same shape can stay whole. Pick “Custom size” and fill in “Canvas width” and “Canvas height”. With the default margin and gap, 1608 × 1080 fits two upright 3:4 photos and 2812 × 1080 two landscape 4:3 ones. In our check, both pairs came out uncropped. The crop always keeps the middle, so a subject near the edge of a frame can fall outside it. Crop that photo first in Crop Image and choose what stays yourself.

Order, file size and the next step

The first photo goes on the left. The arrows under “Photo order” swap the two, and “+ Add files” brings in a third photo as a third strip. In our check in Chrome on a Mac, two phone photos of 10 MB in total became a collage in about two seconds. “Download JPG” gave collage.jpg: 578 kB on the square, 1 MB on 1920 × 1080. JPG, PNG, WebP and AVIF go in up to 50 MB each; a HEIC photo goes through HEIC to JPG first. On a phone the settings sit behind the “Settings” button, and the photos stay on the device. For a before-and-after pair, Add Text to Photo in the row of next tools puts a caption on the collage.

The photos never leave your browser

Decoding, layout, drawing and encoding all happen inside this tab, on your own device. Nothing is uploaded, and there is no account and no queue. That also means the work costs us nothing, so there is no limit on how many collages you make. To continue in another tool, PulsarKit may store a local copy of your input or result in this browser. It can remain after you close the tab or restart the browser. Clear PulsarKit’s site data to delete it.

Frequently asked questions

How many photos can I put in one collage?

Twenty, and at least two. Above twenty the cells get too small to see and the browser starts struggling with the memory, so extra files are left out and the page tells you how many. The total across all the pictures is capped at 300 MB; if you are over it, compress them first; the link is on the error.

Will my photos be stretched or squashed?

No. Every picture is scaled by the same factor horizontally and vertically, in both cover and contain mode. Cover fills the cell and trims the overhang; contain fits the whole picture and leaves background-coloured margins. Neither one distorts a face or a building.

What is the difference between cover and contain?

Cover is about the collage looking solid: every cell is filled edge to edge, and whatever does not fit is cropped away, centred. Contain is about the photos staying whole: everything you shot is still there, and the space left over in each cell is painted with the background colour. Cover is the default because most collages are looked at, not studied.

How do I change the order of the pictures?

Drag the cards in the list, or use the up and down buttons on each card if you would rather not drag. Grid and filmstrip layouts follow that order exactly. Mosaic is the exception: it sorts by shape so the rows come out even, so the card order does not control it.

Can I print the collage on A4?

Yes. Choose the 2480 × 3508 canvas, which is A4 at 300 dpi, the resolution a photo printer actually uses. Use photos of a decent size for that: twenty small phone screenshots blown up to a third of a sheet each will look soft no matter what the tool does.

Are my photos uploaded to a server?

No. Everything runs in your browser, in this tab. There is no upload, no account and no daily limit. To continue in another tool, PulsarKit may store a local copy of your input or result in this browser. It can remain after you close the tab or restart the browser. Clear PulsarKit’s site data to delete it.

How do I add a caption to the collage?

Build the collage, then send the result straight to Add Text. It is one of the next steps offered under the download button, and the file carries over without another upload. Add a border around the whole thing the same way.