It is possible to resize a picture within the ePortfolio content tab. To do this, you MUST insert the picture in a text area using the "insert stuff" button.
To begin, add a text area in your content area using the "Add Component" box.
After this, go to the upper left side of the text editor and you will see a button called "Insert Stuff" click this button.
Select the picture you would like to add from your list of artifacts then hit next. A window will pop up that allows you to resize the picture within the text area. Make sure you check the "lock aspect ratio" box. The preview below this box will refresh. Make sure you check the "this is decorative" box to avoid link text being over your picture.