Combine images into one
Put photos side by side, stack them or lay them out in a grid. Sizes are matched automatically.
Drop two or more images. They’re placed in the order below.
Your files are processed on this device. Nothing is uploaded.
Matching sizes is the whole problem
Put two photos next to each other at their own sizes and you get a ragged strip, with one tall image and one short one leaving a gap. The fix is to scale them to a common edge: side by side matches heights, stacked matches widths and a grid fits everything into equal cells.
The common edge is always the smallest one in the set. Scaling down keeps everything sharp; scaling up to match a larger image would blur the small one, which is worse than a slightly smaller result.
The three layouts
- Side by side
- Before and after, two options for comparison, a pair of product shots.
- Stacked
- Screenshots of a long conversation or a sequence of steps, read top to bottom.
- Grid
- A set of product photos, a contact sheet or a collage for a single social post.
Order
Images are placed in the order of the list, left to right and then top to bottom. File pickers often return files alphabetically, which is rarely the order you meant, so use the arrows to arrange them before combining.
Common questions
How do I put two photos side by side?
Drop both, choose side by side and combine. The taller photo is scaled down to match the height of the shorter one, so the pair lines up top and bottom instead of leaving one image floating in empty space.
Why did one of my images get smaller?
Every image is scaled down to match the smallest in the set, never up. Enlarging a small image to match a big one invents pixels and looks soft, so the combined image is only ever as large as the smallest input allows. If you need it bigger, start from larger originals.
Can I make a before and after comparison?
Yes, that is the most common use. Side by side with a small gap is the usual layout and the order in the list is the order left to right, so put the before image first.
What happens with a grid when the images are different shapes?
Each cell is the same size and each image is fitted inside its cell without cropping, so a mix of portrait and landscape photos leaves some background showing around the ones that don’t match. That is deliberate: cropping them to fill would cut off parts of your photos.
Should I save as JPG or PNG?
JPG for photographs, since the file will be much smaller. PNG for screenshots, diagrams or anything with text, which JPG compression smudges. The combined image is saved once either way.
Guides
The other tools
All of them work the same way: the file is read in your browser and never uploaded.