Merge Images Vertically (Free, Stack Top-to-Bottom)
Combining screenshots, panes or product shots into one vertical image is the classic way to build before/after graphics and long-form comparisons. The Merge Images tool stacks them — in your browser, with zero upload.
Try the free tool now
100% in your browser — no upload, no account, no watermark.
Open Merge Images VerticallyWhen vertical merging shines
Before/after sliders as a single static image, screenshot tutorials, UI flows, and comparison strips all use vertical stacks. One file, one share link, perfect ordering.
Stack images in one flow
- Open the Merge Images tool.
- Upload the images in order, top-first.
- Choose stacked (vertical) mode.
- Set a gap and background color if needed, then download.
Keep the widths consistent — the merger aligns all panes to the same final width.
Format for every destination
Export PNG for crisp screenshots and text, or JPG for photos. For web use, compress the merged result to keep the single image lightweight.
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Frequently Asked Questions
Can I control the gap between images?
Yes — the tool lets you set a custom gap and background color between panes.
What if my images have different widths?
The merger normalizes them to a consistent width automatically for a clean stack.
Is vertical merging different from side-by-side?
Yes — vertical stacks top-to-bottom; side-by-side places them left-to-right. The same tool does both.