Adding a frame to an image

You can add a simple frame to an image or to text by using the \frame{...}, \framebox{...}, or \fbox{...} commands. However, this would give a simple box with thin black lines and a certain distance to the content. How about changing the color, line thickness, or distance? The classic way to do the latter is by changing the LaTeX lengths \fboxrule and \fboxsep. It's a bit laborious, especially when the lengths can vary. It can be made easier.

How to do it...

We will load the adjustbox package. It provides several useful commands for modifying boxes. It implicitly loads the graphicx package and exports its own features to the \includegraphics command. Follow these steps:

1. Load the xcolor package:

   \usepackage{xcolor}

2. Load the adjustbox package with the export option:

   \usepackage[export]{adjustbox}

3. At the place in your document where the image is to be placed, use the \includegraphics command, like in the previous recipe. This time, add the cframe option:

   \includegraphics...