The fastest way to join two pictures depends on what device you have

You can combine two pictures on Windows, Mac, iPhone, or Android using built-in tools that come with your device — you do not need to buy anything. On Windows, the Photos app lets you open both images and paste one onto the other. On Mac, Preview does the same thing. On iPhone, the Photos app has a feature called Markup that lets you add one image on top of another. On Android, Google Photos has a built-in editor that can combine images side by side.

The method you choose depends on whether you want the pictures placed side by side, stacked vertically, or overlapped. This guide walks you through the most straightforward path for each device type.

Key Takeaways

  • Windows users can combine pictures in the Photos app by opening one image, copying another, and pasting it as a new layer.
  • Mac users can open both images in Preview, resize one, and drag it onto the other to join them together.
  • iPhone users can use the Markup tool in Photos to add one image directly onto another image.
  • Android users can open Google Photos, use the Tools menu, and select the collage option to arrange multiple images.
  • All these methods are free and built into your device — no separate software purchase is needed.

Joining pictures on Windows using the Photos app

Open the Photos app on your Windows computer. Click the folder icon in the top left and navigate to the folder where your pictures are stored. Find and open the first picture you want to use as your base image.

Once the first picture is open, right-click on it and select Edit. In the editing window, look for the pencil or paintbrush icon at the top — this opens the Markup tools. Click the image icon (it looks like a small picture frame) to insert another image. Navigate to your second picture and select it. The second image will appear on top of the first one. You can drag it to reposition it, and use the corner handles to resize it. When you are satisfied with the placement, click Save a copy at the top right to save your combined image.

Joining pictures on Mac using Preview

Open the first picture in Preview — you can do this by right-clicking the image file, selecting Open With, and choosing Preview. Once the image is open, go to Tools in the menu bar and select Annotate, then click the image icon (it looks like a small picture). This opens a dialog to insert your second image. Select the second picture from your files.

The second image will appear on the first one. Click and drag it to move it where you want it. Use the corner handles to make it larger or smaller. Once you have positioned both images the way you want them, go to File and select Export. Choose your file format (JPEG or PNG work well) and click Save. Your combined image is now saved as a new file.

Joining pictures on iPhone using Markup

Open the Photos app and select the first picture you want to use. Tap Edit in the top right corner. At the bottom of the screen, tap the three dots (more options) and select Markup. This opens the drawing and annotation tools.

In the Markup toolbar at the bottom, look for the plus sign icon and tap it. Select Image from the menu that appears. Choose your second picture from your photo library. The second image will appear on top of the first one. You can pinch to resize it and drag it to reposition it. When you are done, tap Done at the top right, then tap Save to save your combined image to your photo library.

Joining pictures on Android using Google Photos

Open Google Photos on your Android phone. Find one of the pictures you want to combine and tap it to open it. Tap the pencil icon (Edit) at the bottom of the screen. Tap Tools at the bottom, then scroll right and tap Collage.

Google Photos will automatically select multiple images from your library and arrange them in a grid. You can tap different images to swap them out, or tap the layout icon to change how they are arranged (side by side, stacked, or in a grid). Once you have the images and layout you want, tap the checkmark at the top right to save your collage. The combined image is saved as a new file in your Google Photos library.

Using free online tools if you prefer not to use your device's built-in app

If you want more control over how your images are combined, websites like Pixlr, Canva, or Photopea let you upload two pictures and arrange them however you want. These tools work on any device with a web browser — you do not need to install anything. Go to the website, click the option to create a new project or collage, upload your first image, then upload your second image. You can resize, rotate, and position each image before downloading your final combined picture.

The trade-off with online tools is that you need an internet connection and you are uploading your pictures to a server. If your pictures contain personal information or you prefer to keep everything on your device, stick with the built-in apps described above.

What to do if the combined image does not look right

If your second image is too small or too large, use the resize handles (usually small squares at the corners) to adjust it. Drag from a corner handle to keep the image proportional. If the image is in the wrong spot, click and drag it to move it. If the colors look washed out or the brightness is wrong, go back to the edit menu and look for brightness or contrast adjustments.

If you saved the combined image and want to try again, you can always open the original pictures and start over. None of these tools change your original files — they create a new combined image, so your original pictures are still there if you need them.

Frequently Asked Questions

Can I join more than two pictures at once?

Yes. Most of these tools let you add multiple images. On Windows and Mac, you can repeat the process of inserting images one at a time. On Android, Google Photos' collage tool automatically arranges multiple images in a grid. On iPhone, you can use Markup multiple times to layer several images together.

What file format should I save the combined image in?

JPEG and PNG are the most common formats. JPEG files are smaller and work on any device, but they lose a tiny bit of quality each time you save. PNG files are larger but preserve perfect quality. For most purposes, JPEG is fine. If your combined image contains text or needs to stay very sharp, use PNG.

Will combining pictures make the file size much larger?

The combined image file will be roughly the size of your largest original image, not the sum of both. If one picture is 2 MB and the other is 1 MB, your combined image will be around 2 to 3 MB, not 3 MB. Exact size depends on the resolution and format you choose when saving.

Can I undo changes after I save the combined image?

Once you save the combined image, the original file is created and you cannot undo the changes. However, your original two pictures are still separate and unchanged. If you want to try a different arrangement, open the original pictures again and combine them differently.

What if I want the pictures side by side instead of overlapped?

On Android, Google Photos' collage tool automatically places images side by side. On Windows, Mac, and iPhone, you can resize your second image to be narrower and position it next to the first image instead of on top of it. Online tools like Canva give you preset layouts that place images side by side, which is often easier than doing it manually.