Adding and Editing Images
All the following types of content use the same workflow
process, so they need to be published in the same manner as
documents.
Images are graphical pieces of content; you add them by
selecting Image from the drop-down list. When you add an image, the
name of the content changes to the file of the image. So, if you upload
an image called photo.gif, it'll be accessible in Plone as photo.gif.
When adding or uploading a new image, you can select the image from
your hard drive by clicking the Browse button and selecting the
file.
It's common for image filenames to end with an extension such as .gif, .jpg, .jpeg, .png, or .pict.
You can display images inside Plone on a Web page without having to
download them to the local computer if the type of the image uploaded
is viewable in the user's Web browser. The most common image types are .gif, .jpg, and .png, which are visible on almost computer system.You can't edit images directly; instead, you can edit the image
on your hard drive using any program, such as Adobe Photoshop or GNU
Image Manipulation Program (GIMP). Once complete, clicking the edit tab
allows you upload your new image into Plone. If you do a lot of image
manipulation.

Experience Notes
Website Toolkit
Project websites
Workshops
IW Jobs
E-Bulletin