Image Merger
Combine multiple images into one horizontal or vertical image.
Image Merger
Merge Images Side by Side or Vertically
Upload multiple photos or screenshots, choose the merge direction, arrange the order, preview the combined canvas, and download one finished image.
Upload Images
Drag and drop multiple images here
Max file size: 200MB per fileMerge Settings
Merged Preview
Awaiting Images
Add at least two images to see the merged preview here.
Image Merger: Join Photos Side by Side or Vertically
Use this free Image Merger to combine separate photos, screenshots, scans, or visual panels into one image. You can place images horizontally from left to right or stack them vertically from top to bottom, then download the finished file from your browser.
The tool is designed for simple edge-to-edge stitching. It is useful for before-and-after comparisons, scrolling screenshots, document scan parts, product strips, tutorial images, and any situation where several images need to become one clean output.
Merge Horizontally
Join images side by side when you want direct comparison or a single wide strip.
Merge Vertically
Stack screenshots, pages, or image parts in sequence from top to bottom.
Choose Padding Color
Fill gaps caused by different image sizes with a solid background color.
This Is an Image Merger, Not a Collage Editor
The tool joins images edge to edge. It does not create decorative collage layouts, overlapping layers, custom spacing, filters, or panorama blending.
When images have different widths or heights, the smaller side is not stretched. The empty area is filled with the background color you choose, which keeps the original image proportions intact.
What the Image Merger Does
The Image Merger takes multiple image files and creates one combined output. The merge direction controls the layout: vertical places images one under another, while horizontal places images next to each other.
The arrangement controls the order. The first image appears at the top in a vertical merge or on the left in a horizontal merge. You can move items up or down before downloading.
How to Merge Images Online
- Upload two or more PNG, JPG, JPEG, or WEBP images.
- Choose vertical if the images should read from top to bottom.
- Choose horizontal if the images should sit side by side.
- Pick a background color for padding gaps.
- Use the arrangement buttons to set the correct order.
- Check the preview canvas.
- Download the merged image.
Horizontal vs Vertical Merging
Horizontal merging is best for direct comparison. It works well for before-and-after images, product color options, design variations, and side-by-side screenshots.
Vertical merging is best for sequence. It works well for long conversations, scrolling screenshots, multi-part tutorials, document scans, and stacked visual steps.
How Different Image Sizes Are Handled
In a vertical merge, the output uses the widest image as the canvas width. Narrower images keep their original size, and any empty space to the side is filled with the selected background color.
In a horizontal merge, the output uses the tallest image as the canvas height. Shorter images keep their original size, and the empty space below them is filled with the background color.
Choosing the Background Color
White works well for most documents, screenshots, and light user interfaces. Black works well for dark screenshots, night mode designs, and images with dark edges.
If your screenshots use a grey app background, choose a similar grey so padding strips look less visible. The background color only fills empty canvas space; it does not recolor the images themselves.
Browser-Based Privacy
The merge process happens in your browser using the canvas. Your selected images are read locally, previewed locally, and exported locally.
This is useful when merging private screenshots, client materials, internal documents, chat captures, invoices, or personal photos that should not be uploaded to a remote editor.
When Not to Use This Tool
Do not use this tool for panorama stitching, lens correction, overlapping photo blends, or pixel-perfect alignment between two images. Those tasks need specialized editing software.
Very long vertical outputs can become large files. If you merge many full-screen screenshots, some apps may struggle to display or send the final image.
Common Uses for an Online Image Merger
- Combine scrolling screenshots into one long image.
- Create before-and-after comparisons.
- Join product photos into a single strip.
- Merge document scan halves after cropping.
- Stack tutorial screenshots in order.
- Prepare visual evidence for support or reports.
- Create simple side-by-side design comparisons.
- Combine social media images before sharing.
Image Merger Specifications
| Feature | Details |
|---|---|
| Merge direction | Vertical stacked layout or horizontal side-by-side layout |
| Background color | Solid fill color for empty padding areas |
| Image order | Move images up or down before export |
| Supported input | PNG, JPG, JPEG, and WEBP |
| Output format | Uses the first uploaded image type for the downloaded file |
| Processing | Runs in the browser with canvas-based merging |
Image Merger FAQ
How many images can I merge?
You can add multiple images, but very large batches may slow the browser or create a very large output file. Two to five images usually work comfortably.
Can I merge images with different sizes?
Yes. The tool keeps each image at its original size and fills empty canvas space with the background color you choose.
Can I control which image appears first?
Yes. Use the arrangement buttons to move images up or down before downloading.
Does the tool stretch or crop my images?
No. Images are drawn at their original proportions. Padding is added when sizes do not match.
What format is the merged image saved as?
The download uses the file type of the first uploaded image, such as PNG, JPG, or WEBP.
Can this create a panorama?
No. It joins images edge to edge but does not analyze overlapping details or blend perspective like panorama software.
Are my images uploaded to a server?
The merge workflow runs in your browser, so your images are processed locally on your device.
Is it good for screenshots with text?
Yes. Screenshots keep their original clarity because the tool draws the source images onto one canvas.
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