Help:How to Edit and Resize Images
The FamilySearch Wiki encourages users to submit images that improve the content of the FamilySearch Wiki and are appropriate to the Wiki. Unfortunately, not all images are small enough to make them usable on the Wiki. Below are instructions on how to re-size, edit, and compress images so they will be more suitable to submit to the FamilySearch Wiki.
Editing Images Using Picnik
7. After images have been resized and saved to your computer, you may Upload Images to the Wiki.