concatenate two images one below the other

Question

Using the convert command, we can concatenate img1.png with img2.png:

convert img1.png img2.png +append  full_img.png

However, the command above adds img2.png to the right of img1.png. How to add img2.png at bottom of img1.png using the convert command?

Solution

Just:

convert img1.png img2.png -append  full_img.png

See the manpage:

    -append         append an image sequence top to bottom (use +append for left to right)

Comments

[Smeterlink]

Preserve the quality: convert -quality 100 img1.png img2.png -append full_img.png