Rated 5 out of 5 stars

This extension gives the user what might be the easiest way to compress the SQLite files, which really can improve TB's speed.
<br>There's currently a misleading bug with a function that warns the user of large folder sizes (default 200mb). There's no indication that the warning is caused by this extension, but rather it looks like a core feature of TB. Would have filed it as a bug on Mozdev, but can't.

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Edited review, based in the amazingly fast response from the dev! Wow!

This review is for a previous version of the add-on (2.7.0). 

You are certainly correct about the problem with the dialog's title not being clear enough. This is remedied in version 2.8 which is available on this site. However, automatic downloads of the new version are not happening correctly at this time. I am looking into that. Meanwhile, find and download version 2.8 or higher by clicking the version information link at the bottom of the addon's page then click the complete version history link that is shown below that. Enjoy!