Get flash to fully experience Pearltrees
Introduction This tutorial will take you through the steps required to build a very basic extension - one which adds a status bar panel to the Firefox browser containing the text "Hello, World!". Note: The extension created by this tutorial won't work in Firefox that don't have a static status bar (that is, Firefox 4 and up). You can find a more up-to-date tutorial in the XUL School tutorial The Essentials of an Extension .
This content covers features introduced in Firefox 2 Firefox 2 supports the OpenSearch description format for search plugins. Plugins that use the OpenSearch description syntax are compatible with IE 7 and Firefox. Because of this, they are the recommended format for use on the web. Firefox also supports additional search capabilities not included in the OpenSearch description syntax , such as search suggestions and the SearchForm element. This article will focus on creating OpenSearch-compatible search plugins that support these additional Firefox-specific features.
Reposted with permission from Robert Nyman :
From MozillaZine Knowledge Base Two major extension developers' features introduced in Firefox 1.5 were the greatly simplified chrome registration scheme and the reworked Extension Manager . These changes make it even easier to start writing extensions.
This tutorial explains how to create a toolbar extension for Firefox . It provides an overview of how extensions are developed, the tools required to create them, and details on how toolbars are created. Please note that this tutorial is lengthy; I recommend spending time with it over the course of a few days (it makes for a good weekend read). Extension development isn’t difficult, though some basic programming knowledge is required.