Merge Images Side by Side
Place two or more photos in a neat horizontal row — even spacing, optional border, your choice of background. Free and in your browser.
Drop photos to make a collage
Drag & drop, paste, or pick files — add as many as you like
PNG · JPG · WebP · GIF · BMP — made on your device
Why merge side by side?
Putting images in a horizontal row is the classic way to show a comparison — before and after, two options next to each other, or a panorama of related shots. A side-by-side merge keeps every photo the same height and lines them up left to right, so the eye reads them as a set.
You control the gap between the photos, whether each has a border or rounded corners, and the background that shows in the gaps and around the edge. Export as JPG for a small file, or PNG/WebP if you want the background to stay transparent.
How to merge images side by side
- Add your photos. Drop two or more images onto the tool, paste, or pick files.
- Choose side by side. Select the side-by-side layout to line them up in a single row.
- Set the spacing. Adjust the gap, border, corners, and background colour.
- Download. Pick a format and size, then save the merged image.
Match the heights
Side-by-side works best when the photos are a similar shape. Set the fill mode to Fill so each photo crops to the same height for a clean, even row — or use Fit if you'd rather keep every photo fully visible.
Side-by-side row: how the cells are arranged
Every photo is placed in a single horizontal row at the same height and spread evenly left to right (the engine sets columns to the number of photos and uses one row). The eye reads them as a connected set rather than separate pictures.
What this layout is good for
- A before-and-after or this-or-that comparison shown left to right
- A two- or three-up of related options or angles of the same subject
- A simple panorama of shots that belong together horizontally
Practical tip
Side-by-side reads cleanest when the photos are a similar shape — set the fill mode to Fill so each crops to a matching height for an even row, or use Fit if every photo must stay whole.
More ways to make a collage
Frequently asked questions
How many images can I merge side by side?
Two or more — there's no limit. They're spread evenly across a single horizontal row at the same height.
Can I add a gap between the photos?
Yes. The gap slider sets the spacing between images, and you can add an outer frame and a border around each photo too.
What's the best format for a comparison?
JPG keeps the file small and is fine for photos. Choose PNG if you need a transparent background or crisp edges on graphics.
Where is my image processed?
Your collage is created in your browser, so the new file is made on your own device. How any data associated with the tool is handled is described in our privacy policy.
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