I would like to install this SQLite Manager plug-in for Firefox on Mac OS X. However, the page advertising the plug-in does not offer the customary "get addon" link (or whatever it's called). There is only the possibility of downloading files.

Such as:


How do you use that to install the plug-in?


I believe you just drag-and-drop it to the addons window. Not on a Mac at least, though.

However, it also works on PC when you go to File -> Open and locate the XPI file. Does that work on a Mac?

  • Sorry. Long day. Drag and drop didn't work. Had zero effect. Any other way to do it? – Ethan Aug 1 '09 at 2:35
  • @Ethan - Ammended my response. – MiffTheFox Aug 1 '09 at 16:03

All you have to do is open the file in Firefox. The installation will then start (you may have to allow it by clicking yes or ok on a bar that appears on top).

Either go File -> Open, or drag the file into the address bar, etc.

  • This no longer works in recent versions of Firefox (e.g. 76). I get an error "This add-on could not be installed because it has not been verified". – Metamorphic Jun 4 '20 at 1:59

Just double-click the XPI file from the Finder.

  • That didn't work for some reason. Thanks, for the suggestion, though. – Ethan Aug 1 '09 at 19:21

You can also drag-and-drop the link into the address bar.


I actually like Mr. Tech Local Install to do it, because in addition to install from file, it overrides version check etc...

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