Important :  before submitting  you must  include in your extension all the locales you  already have in hand (with the relative locale lines in the install.rdf and/or chrome.manifest) so that they can be recognized by the WTS and available for translators .

You just have to click on Submit/update extension in the Main Menu-> Web Translation System on the left side.

In the new page that will open, you only have to select your extension and to click on "Send File".

Note: in order to use WTS the extension must contain at least the en-US locale. In case you need en-US version of your locale, send a message on BabelZilla board (Help section) in order to get a translator.

Please wait while the WTS is running : unzipping .xpi and .jar, parsing every file...
Processing big extensions may need a couple of seconds.

Note: you have to be logged in order to access to the Web Translation System

For more information, please see the other Questions & Answers