When you're working on a project, whether it's for your company or home, most of us can't design our own illustrations, so need to resort to professional images to produce a professional document.

Commissioning a professional graphic artist isn't a cheap alternative and you can never be sure that they'll interpret your requirements in their design.

The Open Clip Art Library is a collection of professional clip art images that you can use within any project, whether you're designing for personal or commercial use.

Better still, there are currently over 6,900 images within the library, covering topics such as office, animals, science and much more.

New images are submitted every day, so it's worth browsing the website for additional images.