Merge images side by side, vertically or in a grid

Add both images, keep Side by side selected, and download. The first image goes on the left. Drag a thumbnail to swap the order.

With Match sizes on, which is the default, both photos come out the same height. The taller one is scaled down to the height of the shorter one. Nothing is cropped, and there are no empty bands above or below.

That makes it easy to join two photos side by side for a before-and-after comparison or two product colors. Merging images horizontally works the same way for 3 or more photos in one row.

Want a line between the two photos? Set a gap, such as 10 or 20 px, and pick a white or black background.

Choose Stacked (top to bottom), put the images in order, and download. The first image sits at the top, and each one after it goes below.

Match sizes gives every image the same width as the narrowest one. Wider images are scaled down to fit, never cropped.

Merging images vertically suits forms and records:

• The front of an ID card above the back, in one file
• A photo above a signature for an application form
• Several receipts in one image to send or save

Upload forms often cap the file size, such as 200 KB. After you merge, shrink the image to an exact size in KB.

You can also merge multiple images vertically into one long image. Stack 3, 10 or up to 30, such as a series of screenshots from a chat.

A very long result can pass the largest image your browser can make. It's then scaled down to fit, and the size readout says so. iPhones and iPads have a lower limit than computers.

Choose Grid and set 2 to 10 columns. Photos fill each row from left to right, in the order of the thumbnails. So 4 photos in 2 columns make a 2×2 grid, and 9 photos in 3 columns make a 3×3 grid.

A grid has two ways to size the photos:

• Match sizes (the default) makes even rows. Photos in a row share one height, and each full row is scaled to the same width. Wide and tall photos fit together with no empty holes and nothing cropped.
• Crop to fill makes every cell the same shape: Square, 4:3, 3:4 or 16:9. Each photo is cropped from the center to fill its cell.

When the last row has fewer photos, they're never enlarged to fill it. If that row comes up short, choose whether it sits left, center or right.

To line up photos of different sizes without cropping, keep Match sizes on. Each photo is scaled down to match the smallest one and is never enlarged, so nothing turns blurry or gets cut off.

For example, put a photo 3,000 px tall side by side with one 2,000 px tall, and both come out 2,000 px tall. Neither photo changes shape.

Two other options handle sizes in a different way:

• Original sizes (Side by side and Stacked): nothing is resized, and the background fills the space around smaller photos. Align them top, center or bottom, or left, center or right when stacked.
• Crop to fill (Grid): equal cells in the shape you pick, with each photo cropped from the center.

Gap, border and background

The gap and the border both start at 0, so the photos touch and there's no frame. That's how you merge photos without borders. To add space, use these settings:

• Gap: 0 to 100 px of space between the photos
• Border: 0 to 100 px of space around the outside edge
• Background: white, black, light gray, dark gray, or any color from the picker. It fills the gap, the border and the space around photos in Original sizes.
• Transparent: merge images without a background. The empty space stays clear in a PNG or WebP file, since JPG can't store it.

Keep Max size on Full size, the default. No photo is ever enlarged, so nothing turns blurry. With Match sizes, bigger photos are scaled down to match the smaller ones, never the other way round.

Need every photo at its full size? Choose Original sizes, and nothing is resized at all.

Then pick the format for the merged image:

• Auto saves a JPG, or a PNG when the background is transparent.
• JPG keeps photo files small. It's saved at quality 92 by default, and you can change that.
• PNG is lossless, so no detail is lost, but photo files get large.
• WebP is often smaller than JPG at the same quality, and it can keep a transparent background.

Under the preview, a live readout shows the result's size in pixels and an estimated file size, like "about 2.4 MB". Switch formats and watch it change before you download.

Sharing it online? Set Max size to 4000, 2000 or 1080 px on the long side for a smaller file.

Why a merged PNG can be bigger than your photos

Photos are usually saved as JPG or HEIC, which squeeze the file down. PNG stores every pixel without loss, so the same photos take far more space. A merged PNG can be several times the size of the JPGs that went into it. For photos, pick JPG or WebP.

An image merger puts two or more pictures into one image file. This one is free, with no sign-up, no watermark and no daily limit. Your photos are merged on your phone or computer and never leave your device.

• Works in the browser on phones, tablets and computers. There's no app to install.
• Opens JPG, PNG, WebP, AVIF, GIF, BMP, HEIC, HEIF and TIFF. Animated GIFs use the first frame.
• iPhone photos in HEIC open as they are, and phone photos come out the right way up.
• Merge up to 30 images at a time, up to 50 MB each.
• The download is named after your first photo, like IMG_2041-merged.jpg.