Opera Software ASA

Opera Extensions API guides

Last update: June 30, 2011

Overview

Opera extensions are software applications which extend the functionality of the Opera browser. They are small, lightweight programs which can further enhance the browsing experience.

Opera extensions are built using the Opera Extensions API guides and open web standards. This makes Opera extensions easy to create, quick to debug, and fast to install. Opera extensions for Opera 11 can be downloaded by going to the Opera Extensions Catalog.

The following API guides contain essential data regarding the construction of Opera extensions.

• Button & Badge guide
• config.xml resource guide
• Injected Scripts guide
• Messaging guide
• Popup guide
• Speed Dial guide
• URL Filter API
• Widget object guide
• Windows and Tabs guide

Developer references

Please see additional Opera extension articles and tutorials at our Dev.Opera developer website:

• Dev Opera: Extensions