What is it called when you put a whole bunch of pictures together?

When you combine many photos into one single image or display, the most common word is a collage. You can make a digital collage on a computer or phone, or a physical one with printed photos on a board. A photo mosaic is a specific type where many small pictures form one larger image, like a heart or a date.

At a wedding, you might create a memory board of photos from your relationship, or a guest photo wall where people pin their own pictures. If you put photos together in a video with music, that is called a montage or a slideshow. If you arrange them in a grid on a page, that is simply a grid layout.

You do not need special software to make a collage. Many free tools let you drag and drop photos into a template. For a physical board, use double-sided tape or clips and arrange the pictures in a pleasing order, mixing sizes and orientations. The key is to leave a little space between photos so the overall look is tidy, not cluttered.