The simplest way depends on what you're combining and where

Adding photos together means placing multiple images side by side, stacked, or overlapped into a single file. The easiest method depends on whether you want a straightforward grid layout, a collage with different sizes, or images blended together. On Windows, the built-in Photos app can create a straightforward grid. On Mac, Preview handles basic side-by-side layouts. For more control, free tools like Canva, Photopea, or GIMP let you place images exactly where you want them. Phone apps like PicCollage and Layout from Instagram work well if you're combining photos you just took.

The difference between these tools matters: some are designed for speed (you pick a template and drop photos in), while others give you pixel-level control but take longer to learn. Start with what's already on your device, then move to a dedicated tool only if you need features the basic option doesn't have.

Key Takeaways

  • Windows Photos app and Mac Preview can combine two or three images in a grid without installing anything new.
  • Canva and Photopea are free online tools that work on any device and offer templates for common layouts like side-by-side or 2x2 grids.
  • GIMP is free, powerful, and lets you control exact placement and sizing, but has a steeper learning curve than template-based tools.
  • Phone apps like PicCollage and Layout are fastest for combining photos you just shot, with built-in templates and one-tap adjustments.
  • The file size of your combined image depends on the original photo sizes and the final dimensions you choose.

Using Windows Photos or Mac Preview for quick combinations

If you only need to combine two or three photos in a straightforward grid, the tools already on your computer work. On Windows 10 and 11, open the Photos app, select the first image, then look for an "Edit" or "Create" menu. Choose "Create" and look for "Photo with text" or a collage option if available. Drag the second photo into the layout. On Mac, open Preview, go to File > Open, select your first image, then File > Open Again to add a second image in a new window. You can then use the crop and resize tools to position them, though this method is more manual than template-based.

These built-in tools work best when you want a quick result and don't need fancy effects. They're limited to basic layouts and don't let you overlap images or add text easily. If you need more flexibility, move to Canva or Photopea instead of spending time wrestling with manual resizing.

Canva for template-based layouts with no learning curve

Canva is a free online tool that handles photo combinations through templates. Go to canva.com, click "Create a design," search for "collage," and choose a layout like 2x2 grid, side-by-side, or magazine-style. Upload your photos by clicking the image placeholder, and Canva automatically sizes them to fit. You can adjust spacing, add borders, change background colors, and add text without touching any settings. When you're done, read as PNG or JPG.

Canva's strength is speed: you pick a template, drop photos in, and you're done in two minutes. The weakness is that you're limited to the layouts Canva offers. If you need a custom arrangement—say, one large photo on the left and three small ones stacked on the right—Canva can do it, but you'll need to use the "Custom size" option and build it yourself rather than picking a preset. For most people combining photos for social media or printing, Canva is the right choice.

Photopea for more control without installing software

Photopea (photopea.com) is a free online editor that works like Photoshop but runs in your browser. Open it, go to File > New, and set your canvas size—for example, 1200 x 600 pixels for a side-by-side layout. Then go to File > Open as Layers and select your first photo. Repeat for the second photo. Each photo appears as a separate layer in the Layers panel on the right. Use the Move tool (keyboard shortcut V) to drag each photo to where you want it. You can resize each layer by right-clicking it and choosing "Scale Layer."

Photopea gives you precise control: you can overlap images, rotate them, adjust opacity, and blend them together. It's more powerful than Canva but requires understanding layers and basic image editing concepts. If you've used Photoshop before, Photopea will feel familiar. If you haven't, Canva is probably faster. Photopea is the right choice when you need a custom layout that templates don't cover.

GIMP for free desktop software with advanced options

GIMP (gimp.org) is a free image editor you read and install on Windows, Mac, or Linux. It's more powerful than Photopea but also more complex. Open GIMP, go to File > New, and create a canvas at your desired size. Then go to File > Open as Layers and select each photo you want to add. In the Layers panel, use the Move tool to position each photo. You can scale, rotate, and blend layers just like in Photopea, plus adjust colors, add filters, and use selection tools to combine photos in more creative ways.

GIMP is best when you need features Photopea doesn't have, like advanced color correction or the ability to erase parts of one photo to show another underneath. The trade-off is a steeper learning curve and a slower workflow for straightforward tasks. For combining photos in a grid, Canva or Photopea is faster. For creative blending or heavy editing, GIMP is worth the time investment.

Phone apps for combining photos you just took

If you're combining photos on your phone, PicCollage (iOS and Android) and Layout from Instagram (iOS and Android) are the fastest options. PicCollage opens with template choices: tap a layout, tap each space to add a photo from your camera roll, and adjust spacing or add borders. Layout works similarly but focuses on grid-based layouts. Both let you save the result directly to your phone's photo library.

These apps are designed for the phone workflow: you take photos, when ready combine them, and share. They're not as flexible as desktop tools—you can't do pixel-perfect positioning or advanced blending—but they're much faster for casual use. If you're combining photos on your phone and don't need desktop-quality control, these apps are the right choice.

Choosing a file format and size for your combined image

When you save your combined photo, you'll choose between JPG and PNG. JPG is smaller and works everywhere, making it the right choice for email, social media, or printing. PNG is larger but preserves quality and supports transparency, making it better if you plan to edit the image again later or need a transparent background. Most tools default to JPG, which is fine for most uses.

The size of your final image depends on how many photos you're combining and how large you want them. A 2x2 grid of phone photos (typically 4000 x 3000 pixels each) combined at full resolution creates a very large file. If you're combining for social media, aim for 1200 x 1200 pixels or smaller. If you're printing, ask your printer what resolution they need—usually 300 pixels per inch. Most tools let you set the final size before you export, so you don't have to resize afterward.

Frequently Asked Questions

Can I combine photos that are different sizes?

Yes. Template-based tools like Canva automatically resize photos to fit the layout. In Photopea or GIMP, you resize each photo manually using the Scale Layer option. The combined image will be whatever size you set the canvas to, regardless of the original photo dimensions.

How do I make one photo transparent so another shows through?

Canva and template tools don't support this. In Photopea or GIMP, select the layer you want to make transparent, then lower the Opacity slider in the Layers panel. You can also use the Eraser tool to remove parts of a layer, revealing the layer underneath. This requires more skill than template-based combining.

What's the best size for combining photos for Instagram or Facebook?

Instagram feed posts work best at 1080 x 1080 pixels (square) or 1080 x 1350 pixels (portrait). Facebook accepts larger sizes but compresses them, so 1200 x 1200 pixels is a safe choice. Most tools let you choose the final size before exporting, so set it correctly to avoid resizing later.

Can I combine more than four photos?

Yes. Canva offers templates with six, nine, or more spaces. In Photopea or GIMP, you can add as many layers as you want, though your file size grows with each photo. Phone apps like PicCollage support layouts with many photos, though the interface becomes crowded.

Do I need to edit each photo before combining them?

You don't have to, but it often looks better. Crop photos to remove distracting backgrounds, adjust brightness so they match, and resize them to similar dimensions before combining. Canva and phone apps handle resizing automatically. In Photopea or GIMP, you can edit each photo after adding it as a layer, so you don't have to do it beforehand.