Concatenate image tiles to larger image
Often sites display larger images split up in tiles of e.g. 256×256 pixels. The tiles can easily be retrieved using e.g. curl. The full image can be reconstructed using ImageMagick montage:
montage +frame +shadow +label -tile NxM -geometry +0+0 *.jpg joined.jpg
where N is the number of horizontal tiles and M is the number of vertical tiles.