This form places two rectangular panels beside or above each other. It has no opacity, overlap, subject alignment or AI blending controls. Choose it when you want both pictures to remain separate and visible in one file.
Merge Two Images
Put two pictures side by side or one above the other and download a single PNG, JPG or WebP. Set their order, spacing and background color. The images keep their proportions and are resized to a shared height or width.
You may also need:Image Resizer·Image Cropper·Image Splitter·Compress Image·Watermark Maker·Browse all tools
Side by side or stacked: choose your layout
For a before-and-after photo, a pair of screenshots or two product views, start with the order you want people to read them. Select one picture in each slot, using a format your browser can preview, such as PNG, JPG or WebP. Each upload can be up to 20 MB; input and output sides must stay within 8,192 px.
Horizontal
Image 1 is on the left and image 2 on the right. Both are scaled proportionally to the taller source's height.
Vertical
Image 1 is above image 2. Both are scaled proportionally to the wider source's width.
Swap Images
Exchanges the two slots, reversing left/right or top/bottom order.
Gap
Advanced Settings offers 0, 5, 10, 20 or 30 px between the images. The default is 0.
Background color
The default is white. The chosen solid color fills the gap and shows through transparent areas of the sources.
The smaller picture may be enlarged to match the larger one. For example, horizontal 800×600 and 400×300 sources become two 800×600 panels; adding a 10 px gap produces 1610×600. This calculation helps you plan the layout. It does not mean the enlarged picture gains detail.
How to combine two images into one
1
Choose the pictures and their order
Add one file to each slot. Each uploads immediately. Check both previews and use Swap Images to reverse the order without uploading again.
2
Set the layout, gap and background
Choose Horizontal or Vertical. In Advanced Settings, adjust spacing and the solid background, then select PNG, JPG or WebP. JPG and WebP also show quality choices. There is no crop or output-size field here.
3
Merge and save the finished image
Click Merge Images to process the two uploaded sources. Download the completed file and check the order, small text, border and total dimensions.
Pick an output that suits the two pictures
PNG is a useful starting point for screenshots and lettering. For photographs, compare a JPG or WebP copy if your destination accepts it. The selected background is solid in every output, including PNG and WebP.
PNG
Selected by default. There is no quality selector. Scaling can still change the source pixels.
JPG or WebP
Quality choices are “Strong compression”, “Moderate compression”, “Balanced”, “High quality” and “Highest quality”, initially “High quality”. Both use lossy encoding; “Highest quality” is not a lossless mode.
Result dimensions
Width and height must each stay within 8,192 px. The total includes the gap; two individually usable pictures can produce an oversized result.
Animated input
Only the first frame is used. This tool does not join animations or create a slideshow.
A file with two full-size panels can be much wider or taller than either source. Resize large originals before merging if necessary, and keep them for later edits. Original metadata is not retained in the merged file.
Prepare pictures that are easy to compare
A clear composition helps more than simply choosing a higher quality setting.
Match framing in a before-and-after pair
Keep the subject at a similar scale and position in both pictures. Use Image Cropper beforehand to remove unrelated space. The merge itself does not align subjects or blend their edges.
Keep screenshot text readable
When one screenshot is much smaller, reduce the larger source with Image Resizer before merging. Check the final image where it will be displayed; fitting a wide pair into a narrow message can make both panels too small.
Download the result promptly because uploaded and generated files are temporary. This tool produces a static layout; it does not create a panorama, animation or AI-generated scene.
Questions about joining images
There are two input slots. You can reuse a downloaded result in another merge, but each pass can resize or re-encode it and changes the layout. Keep the original pictures rather than repeatedly editing the only copy.
Horizontal layouts match the taller source's height; vertical layouts match the wider source's width. A smaller image can therefore be enlarged. Start with a larger original or reduce the larger picture first. Raising output quality cannot recreate missing detail.
For one picture per PDF page, use Image to PDF. For these two pictures together on one PDF page, merge them here first and convert the downloaded image. This page itself outputs PNG, JPG or WebP.
The chosen solid color fills the canvas and shows through transparent parts of the inputs. Selecting PNG or WebP does not change that behavior. The default background is white; choose another color before merging if needed.
Put your two pictures together
Choose their order and spacing, then save one image for your comparison.