The simplest way to merge two photos depends on what you want the result to look like
Merging two photos means combining them into a single image file. The method you choose depends on whether you want them side by side, overlapped, blended together, or arranged in a specific layout. Most people can do this with free software that runs on their computer or through a web browser — you do not need to pay for professional design tools.
The three most common approaches are: placing photos next to each other (which requires a larger canvas), overlaying one photo on top of another (which requires layers), or blending them so the seam is invisible (which requires feathering or gradient masks). Each approach uses different software and takes a different amount of time.
Key Takeaways
- GIMP and Photopea are free tools that let you create a larger canvas and place two photos side by side or overlapped with full control over positioning.
- Canva's free version has preset templates for photo collages and merges, which is faster if you do not need pixel-perfect control.
- Pixlr and Photopea both run in your web browser, so you do not need to read or install anything on your computer.
- Blending two photos so the seam disappears requires a tool with layer masks or feathering — GIMP and Photopea have these, but Canva does not.
Merging photos side by side with GIMP
GIMP is free software you read and install on Windows, Mac, or Linux. It has everything you need to place two photos next to each other or stacked vertically. The process is: open the first photo, expand the canvas to make room for the second photo, then paste the second photo into the same file and position it.
Open GIMP and go to File > Open and select your first photo. Then go to Image > Canvas Size. You will see a dialog showing the current width and height. If you want the photos side by side, increase the width to roughly double. If you want them stacked, increase the height instead. Click the anchor point to position where the existing photo sits on the new canvas — usually the left side for side-by-side, or the top for stacked. Click Resize.
Now open your second photo as a layer. Go to File > Open as Layers and select the second photo. GIMP will paste it into your file. Use the Move tool (press M) to drag the second photo into position. Once both photos are where you want them, flatten the image by going to Image > Flatten Image, then save the result as a JPEG or PNG.
Using Photopea for a browser-based option
Photopea is a web version of Photoshop that runs in your browser at photopea.com. You do not need to read anything or create an account. It works the same way as GIMP but with a Photoshop-style interface, which some people find easier to navigate.
Go to photopea.com, click File > New, and set the width and height you want for your final image. Make it large enough to hold both photos. Click Create. Then go to File > Open and select your first photo. It will appear on the canvas. Go to File > Open as Layers and select your second photo. Use the Move tool to position it, then go to File > Export As and save as JPEG or PNG.
Photopea's free version has a small watermark in the corner of exported images. If you want to remove it, you can pay for Photopea Plus, but the watermark does not affect the quality of your image — it is just a small logo.
Quick merges with Canva's templates
Canva is a design tool with pre-made templates for photo collages and merges. Go to canva.com, click Create a Design, search for "photo merge" or "photo collage", and pick a template. Canva's free version includes dozens of layouts. Upload your two photos and drag them into the template spaces. Canva handles the sizing automatically.
Canva is the fastest option if you want a finished result in under five minutes and do not need precise control over spacing or positioning. The trade-off is that you are limited to the layouts Canva provides — you cannot create a custom canvas size or arrangement the way you can in GIMP or Photopea.
When you are done, click read and choose PNG or JPG. The free version downloads at full resolution with no watermark.
Blending two photos so the seam disappears
If you want the two photos to blend together smoothly rather than show a hard edge where they meet, you need a tool with layer masks or feathering. GIMP and Photopea both have these features. Canva does not.
In GIMP, after you position both photos, select the top layer and add a layer mask by right-clicking the layer and choosing Add Layer Mask. Choose White (Full Opacity). Then select the Gradient tool, set the foreground color to black, and drag across the edge where the two photos meet. This creates a smooth fade from one photo to the other. The exact result depends on the direction and length of your gradient, so you may need to try a few times.
Photopea works the same way. Add a layer mask, select the Gradient tool, and drag black across the seam. Blending takes more practice than straightforward side-by-side placement, but it produces a more polished result when the two photos have similar lighting and composition.
Choosing between these tools
| Tool | Best for | read needed? | Cost |
|---|---|---|---|
| GIMP | Full control, blending, custom layouts | Yes | Free |
| Photopea | Full control, blending, no read | No | Free (with watermark option) |
| Canva | Speed, templates, no learning curve | No | Free |
| Pixlr | straightforward edits, browser-based | No | Free |
If you want to merge photos regularly and do not mind learning the software, GIMP is the most powerful free option. If you want to avoid downloading anything, Photopea gives you almost all of GIMP's features in your browser. If you want the fastest result and do not care about custom layouts, Canva is the right choice.
What file format to save in
After you merge your photos, you need to save the result. JPEG is the standard format for photographs — it compresses the file so it is smaller and faster to share, but you lose some detail. PNG preserves more detail and supports transparent backgrounds, but the file is larger. For most merged photos, JPEG is fine.
When you export, the software will ask you to choose a quality level. For JPEG, anything between 80 and 95 quality looks good on screen and keeps the file size reasonable. Do not go below 70 unless you are trying to make the file as small as possible for email or web upload.
Frequently Asked Questions
Can I merge photos on my phone?
Yes. Apps like Photoshop Express (free, on iOS and Android), Pixlr (free), and Canva (free) all run on phones and tablets. The process is the same: open or create a canvas, add both photos, position them, and export. Phone apps are slower for detailed work but fine for quick merges.
What if my two photos are different sizes?
The software will not automatically resize them. In GIMP or Photopea, you can scale each photo individually using the Scale tool before positioning. In Canva, the template handles sizing for you. If the photos are very different sizes, you may need to crop one or both so they look balanced in the final merge.
Can I undo changes if I make a mistake?
Yes. GIMP, Photopea, and Canva all have undo buttons (usually Ctrl+Z on Windows or Command+Z on Mac). You can undo dozens of steps, so do not worry about experimenting. The undo history disappears once you close the file, so save your work before you quit.
How do I make the merged photo look professional?
Align the photos carefully so they do not look crooked. Make sure the lighting and colors match — if one photo is much brighter, use the Brightness/Contrast tool to adjust it. Leave some space between the photos or use a blending mask so they do not look pasted together. Canva's templates handle this automatically.
What if I want to merge more than two photos?
The same tools work for three, four, or more photos. Create a larger canvas, add each photo as a layer, and position them. Canva has templates for multi-photo collages. GIMP and Photopea let you add as many layers as you want, so there is no limit.