Before including it in a document, an image should be prepared using graphics software. LaTeX is not the right tool for post-processing of images. However, there are some basic ways to customize the way an image is included.
The graphicx package allows customization via simple options:
By scaling an image, you can specify a scaling factor, like so:
\includegraphics[scale=0.5]{filename}You can resize to a fixed width, using width and height options as in the previous recipe.
You can rotate by specifying a clockwise rotation angle, like so:
\includegraphics[angle=90]{filename}You can rotate around a certain origin by adding a key, such as
cfor center,Bfor the base line, andl,r,t, andbfor left, right, top, and bottom, respectively. A combination would be understood, such astlfor top-left corner:\includegraphics[angle=90,origin=tl]{filename}You can trim and clip, like here, where we cut off 1 cm at the left, 2 cm at the bottom, 3 cm at the right, and 4...