Overview Now what? Overview Once you've finished this page and the Getting Started tutorial, you'll be all set to start writing extensions. The basics...
https://developer.chrome.com/extensions/overview
* Getting Started * APIs that the browser provides to web pages * content scripts * cross-origin XMLHttpRequests * bookmarks * tabs * browser actions * page actions * Developer's Guide * Chrome Developer Dashboard * Hosting * predefined message * Manifest Files * persistent background pages * event pages * Event Pages * Background Pages * tabs.create * Browser Actions * Options * Override Pages * Communication between pages * Content Scripts * tabs.create * runtime.getURL * tabs.query * tabs.update * chrome.* API docs * chrome.extension * storage * web storage API * tabs.Tab * windows.Window