Author-it does not offer built-in graphics editing functions. Author-it's File object enables you to specify scaling in each output format, which is performed when you generate the document. However, this can cause distortion in the online formats.
Scaling really only works in the Word and PDF outputs because print resolution is higher than online screen resolution. The online graphics are literally mapped images, one pixel at a time. When you change the size, you squeeze the pixels closer together and blur the edges of picture elements such as lines and blocks of color. If you need to scale online images, we recommend that you use a dedicated graphics editor to scale your graphics before inserting them to avoid distortion.