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ToolMug

Image Stitcher

Combine screenshots, photos or pages into a single image — stacked vertically into one long picture, or side by side. Images are resized to a common width or height so the result lines up neatly.

Runs in your browser — nothing you enter is uploaded

or drop files here

You can also paste an image with Ctrl+V / ⌘V

How to use

  1. Add two or more images, or paste screenshots one after another.
  2. Reorder them with the arrows.
  3. Choose vertical or horizontal, how to match sizes, and optional gaps, border and background.
  4. Download the combined image.

Options explained

Size
Match smallest scales every image down to the narrowest (or shortest), which keeps the result sharp. Match largest scales up. Keep original leaves sizes unchanged and aligns them.
Gap and border
Space between images and around the edge, filled with the background colour.

Examples

Long chat screenshot. Four phone screenshots, vertical, no gap.

Before and after. Two photos, horizontal, 20 px gap on a white background.

Frequently asked questions

Is there a size limit?

Browsers can create images up to about 16,384 pixels on a side and about 16.7 million pixels in total (the iPhone limit). Larger results are scaled down automatically, with a notice. To keep them sharp, use Match smallest or split into several images.

Can I combine chat screenshots into one image?

Yes — that is a common use. Add them in order, choose Vertical and Match smallest, and download.

Are my images uploaded?

No. Everything is combined in your browser.

Privacy

This tool runs entirely in your browser. Your files and text are processed on your device and are never uploaded to our servers.

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