Free Adobe Illustrator symbols are available online from Vector Portal, DeviantArt, GraphicXtras, Code Zebra and many other websites. The majority of the symbols on these sites are royalty-free and fully editable.
A symbol is an art object that can be reused in a document multiple times by adding instances of the symbol without actually recreating the complex art. Using symbols saves time and reduces file size. Examples of some of the symbols available for free on websites include burst symbols, explosion symbols, abstract lines and vector halftone symbols. They are often grouped into categories according to their purpose, such as architectural, landscaping and building services symbols.