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Is It Compatible? 0.5.3.1-signed
**Notice: This addon is no longer maintained.** Are your addons compatible with the next version of Firefox? Find out straight from the Addons window! **Version 0.6.0 is available from the Versions page, it was never approved by AMO**
About this Add-on
This addon does exactly one thing: displays Firefox or Thunderbird compatibility versions for each addon in the addons window (Tools Menu -> Add-ons).
It also adds the ability to copy an extension's ID to the clipboard ("Copy ID" in extension's context menu). If you only need to quickly reference the ID, it's available as a tooltip on the compatibility range.
Works for extensions, themes, and locales.
Google group: http://groups.google.com/group/isitcompatible
Source code: https://bitbucket.org/eternicode/isitcompatible/