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    Working with AMO

    AMO ( is the main add-ons hosting site for Firefox and other Mozilla applications. Although you can distribute your add-ons on your own website, AMO provides free hosting and update services as long as you comply with their basic guidelines.

    Updating icons and descriptions

    (Firefox 4 / Thunderbird 3.3 / SeaMonkey 2.1)

    Firefox 4 periodically asks AMO for updated information about all installed add-ons, and uses that information to update the information displayed in the Add-ons Manager panel. This means that you can change basic details about how your add-ons are presented without needing to update your add-on, by simply modifying the information using the AMO developer tools web site.

    The following pieces of information are automatically updated:

    • Name
    • Descriptions
    • Homepage
    • Icons
    • Screenshots
    • Contributions
    • Reviews
    • Creator/developers/contributors/translators

    Opting out of AMO updates

    Sometimes you may not want your add-on to automatically update the information listed above from AMO, or you may prefer that Firefox not include your add-on in the list of installed add-ons that it sends to AMO. You can opt out of information updates on a per-add-on basis by simply including the following preference in one of your add-on's default preference files:

    pref("extensions.<ID>.getAddons.cache.enabled", false);

    Document Tags and Contributors

    Contributors to this page: Sheppy, Mossop
    Last updated by: Sheppy,
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