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Image Merge

Merge two or more images into one picture, side by side horizontally or stacked vertically. It works well for before-and-after comparisons, product variations and long screenshots, with control over spacing, alignment and background color.

The interactive tool loads here when JavaScript is enabled. Files are processed locally in your browser.

How to use Image Merge

  1. Add two or more images and arrange their order.
  2. Choose a horizontal or vertical layout.
  3. Set the gap, alignment, background color and whether to match sizes.
  4. Merge and download the combined image as PNG, JPG or WebP.

Features

  • Optional size matching scales images to the same height (horizontal) or width (vertical).
  • Spacing and outer padding in pixels, with any background color.
  • Start, center or end alignment when images differ in size.
  • Transparent PNG output when the background is set to transparent.

Supported formats and limitations

Input: two or more JPG, PNG or WebP images. Output: one JPG, PNG or WebP image.

  • Results are limited to 16 megapixels and 8,192 pixels on the longest side.
  • Images are merged in a single row or column; use the Photo Collage Maker for grids.

Frequently asked questions

How do I combine two photos side by side?

Add both photos, choose Horizontal and turn on Match sizes so they share the same height, then merge.

Is there a size limit for the merged image?

The result can be up to 16 megapixels and 8,192 pixels on its longest side; larger layouts are scaled down to fit.

Can I make a grid of images?

For grids with several rows, use the Photo Collage Maker. Image Merge creates a single row or column.