Merge multiple PNGs vertically or horizontally
Combine multiple PNGs in the order you upload them, either vertically (top to bottom) or horizontally (left to right), into a single image. Handy for combining transparent images, screenshots, or diagrams into one continuous PNG. Everything runs inside your browser, so files are never uploaded to a server.
Select PNG files
You can drop multiple files at once
How to use
- 1
Drop the PNG files to merge into the area above, or click to select. Add them in the order you want them joined.
- 2
Choose the merge direction (vertical / horizontal). Vertical joins top to bottom, horizontal joins left to right.
- 3
If the images differ in size, adjust the alignment. Vertical merges align by width (fit to narrowest / fit to widest) and horizontal merges align by height (fit to shortest / fit to tallest). The result is saved as PNG, so any empty areas stay transparent.
- 4
Press "Merge images" to build the combined PNG. Use the download button to save it right away.
FAQ
- How is the merge order decided?
- PNGs are joined in the order you upload them: top to bottom for vertical merges, left to right for horizontal merges. To change the order, remove the files and add them again in the order you want.
- What happens if the screenshots have different sizes?
- Vertical merges align by width and horizontal merges align by height. With "Fit to smallest", the others scale down to the smallest image. With "Fit to largest", everything matches the largest image and smaller ones get padding around them, filled with the background color.
- Is the PNG transparent background kept?
- Yes. The result is always saved as PNG, so the original transparent areas are preserved whether you merge vertically or horizontally. Any empty space created when images differ in size also stays transparent.
- Are my PNGs uploaded to a server?
- No. Merging happens entirely in your browser. Images are never uploaded to a server and disappear from memory the moment you close the page.