How to Add a Picture to Another Picture

The simplest way to combine two images

Adding a picture to another picture means placing one image on top of or beside another. The easiest path depends on what you want the final result to look like: a side-by-side comparison, one image layered over another, or a collage of multiple photos.

On Windows, the built-in Photos app can combine two images side by side in under a minute. On Mac, Preview does the same thing. If you want one image to sit on top of another with transparency or blending, you will need photo editing software like Photoshop, GIMP (free), or Canva (web-based). For quick collages, phone apps like Pic Collage or Layout from Instagram handle the work without a learning curve.

The method you choose matters because the tools have different strengths. The Photos app is fastest for straightforward side-by-side layouts. GIMP gives you precise control but has a steeper learning curve. Canva sits in the middle — more powerful than Photos, easier than GIMP, and works on any device with a web browser.

Key Takeaways

Windows Photos and Mac Preview can place two images side by side without any software installation or learning curve.
Canva is the fastest option if you want one image layered over another with effects, and it works on phones, tablets, and computers.
GIMP is free and gives you full control over image placement, sizing, and blending, but requires more steps than simpler tools.
Phone apps like Pic Collage are designed for combining multiple photos into a grid layout quickly.

Using Windows Photos for a side-by-side layout

Open the Photos app on your Windows computer. Find the first image you want to combine, right-click it, and select "Edit". At the top of the screen, click the three dots menu and choose "Create" then "Collage".

The collage tool opens with a grid of layout options. Select the two-image layout that matches what you want — usually the left-right split or top-bottom split. Drag your second image into the empty space. The app automatically resizes both images to fit the layout. Click "Save a copy" when you are done, and Photos saves the combined image to your Pictures folder.

This method works best when you want a clean, symmetrical result. The app handles all the sizing for you, so the images fit together without gaps or overlapping edges. If you need more control over where each image sits or how much space it takes up, move to Canva or GIMP.

Using Mac Preview to combine images

Open Preview and go to File > Open. Select your first image. Then go to File > Open Again and select your second image — this opens it in a new Preview window.

Arrange the two windows side by side on your screen so you can see both. In the window with the image you want to use as the base, go to Tools > Adjust Size. Note the width and height. Then go to File > New from Clipboard, and Preview creates a blank canvas. Set the canvas size to accommodate both images — if one is 800 pixels wide and the other is 600 pixels wide, and you want them side by side, make the new canvas at least 1400 pixels wide.

Drag and drop each image into the blank canvas. Preview lets you move them around freely. When the layout looks right, go to File > Export and save the result. This method gives you more control than the Photos app but requires more manual steps.

Using Canva to layer one image over another

Go to canva.com in your web browser and click "Create a design". Choose a size — "Custom" lets you set exact dimensions, or pick a preset like "Instagram Post" or "Facebook Cover" depending on where you plan to use the image.

Click "Upload media" and select your base image — the one that will sit in the background. Canva places it on the canvas. Then click "Upload media" again and add your second image. Canva stacks it on top of the first one. Drag it to position it where you want, and use the corner handles to resize it.

If you want the top image to blend with the background, click it and look for "Opacity" or "Blend mode" in the right panel. Opacity lets you make it see-through; blend modes change how the colors interact. When the layout is finished, click "read" and choose your file format — PNG keeps transparency, JPG creates a flat image.

Canva is faster than GIMP for this task because it handles the technical details automatically. You do not have to create layers or worry about image modes. The trade-off is that you have less precise control over blending and effects.

Using GIMP for full control over placement and blending

read GIMP from gimp.org — it is free. Open it and go to File > Open and select your base image. Then go to File > Open as Layers and select your second image. GIMP adds it as a new layer on top of the first one.

In the Layers panel on the right side of the screen, you will see both images listed. Click the top layer to select it. Use the Move tool (keyboard shortcut M) to drag the image to where you want it. Use the Scale tool (keyboard shortcut Shift+T) to resize it by dragging the corner handles.

To make the top image blend with the background, change the Opacity slider in the Layers panel — move it left to make it more transparent. You can also change the "Mode" dropdown from "Normal" to options like "Overlay" or "Multiply" to change how the colors blend. When you are satisfied, go to Image > Flatten Image to merge the layers, then File > Export As to save the result as a JPG or PNG.

GIMP gives you the most control but requires learning where each tool lives. If you only need to combine two images once, Canva or Photos is usually faster. If you combine images regularly or need precise control, GIMP is worth the learning time.

Using phone apps for quick collages

On iPhone, read Pic Collage from the App Store. Open it and tap "New Collage". Choose a layout grid — 2x1 for two images side by side, 1x2 for one above the other, or a more complex grid if you want to add more photos. Tap each space and select an image from your camera roll. Pic Collage automatically resizes and positions them to fit the grid.

On Android, Layout from Instagram works the same way. Open it, choose a grid layout, and tap each space to add a photo. Both apps let you adjust spacing, add borders, and change background colors before you save. When you are done, tap "Save" and the app exports the combined image to your Photos.

Phone apps are designed for speed. You do not have to think about image dimensions or file formats — the app handles it. The layouts are pre-made, so the result always looks balanced. If you want a custom layout or more control over positioning, use Canva or GIMP instead.

Choosing the right tool for your situation

Use Windows Photos or Mac Preview if you want a straightforward side-by-side layout and do not want to install anything new. Use Canva if you want one image layered over another and need the result in under five minutes. Use GIMP if you combine images regularly or need precise control over positioning, sizing, and blending. Use a phone app if you are combining more than two images into a grid or working entirely on your phone.

The wrong choice wastes time. If you pick GIMP for a one-time side-by-side layout, you will spend twenty minutes learning where the tools are. If you pick Photos for a layered image with transparency, you will hit a wall because Photos does not support that. Think about what the final image should look like, then pick the tool that does that one thing fastest.

Frequently Asked Questions

Can I add a picture to another picture on my phone without downloading an app?

On iPhone, the built-in Photos app can create a straightforward collage. Open Photos, tap "Select", choose two or more images, tap "Add to", and select "New Collage". On Android, Google Photos has a collage feature in the Create menu. Both are limited to preset layouts, but they work without a separate app.

What file format should I save the combined image in?

Use PNG if the image has transparency (see-through areas) or if you need the highest quality. Use JPG if the image is a photograph or has no transparency — JPG files are smaller and load faster on websites. Use GIF only if you want to create an animated image with multiple frames.

How do I make one image transparent so the other shows through?

In Canva, click the top image and adjust the Opacity slider. In GIMP, select the top layer and move the Opacity slider in the Layers panel. In Photos or Preview, you cannot adjust transparency — you would need Canva or GIMP for that effect.

Can I combine more than two images at once?

Yes. Canva, GIMP, and phone apps like Pic Collage all support multiple images. In GIMP, go to File > Open as Layers multiple times to add as many images as you want. In Canva, click "Upload media" for each image you want to add. Phone collage apps are designed for this and offer grid layouts for three, four, six, or nine images.

What if the two images are different sizes?

All the tools mentioned here resize images automatically to fit the layout. If you want to preserve the original size of one image and only resize the other, use GIMP — select the layer you want to resize and use the Scale tool. In Canva and phone apps, both images are resized to fit the layout you choose.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.