Firefox and thumbnails in profile directory.

[Joop]

With FF version 24.8.1 and version 31.8.0 I have in the profiles directory a sub directory thumbnails. With these two versions I have thumbnails in this directory, but its taking space like hell (about 30k/picture). I don't want thumbnails, but can't find where to switch it off. In the about:config there are two lines about thumbnails. One has a setting with a long number, but that could be a date, the other has setting 3. Is there a way to stop producing automatic(?) thumbnails. There might be a change that some add-in does this, don't know. I looked everywhere. Does anyone of you have an answer on this subject?

[Dave Yeo]

In about:config, create these Boolean settings,  (right click on page)
name: browser.pagethumbnails.capturing_disabled with value: true
name: pageThumbs.enabled with value: false

[Joop]

In about:config, create these Boolean settings,  (right click on page)
name: browser.pagethumbnails.capturing_disabled with value: true
name: pageThumbs.enabled with value: false

Thanks Dave, found the first myself, that seems to work. No new thumbnails are stored in the directory. This brings me to your second, is this one needed too?

[Dave Yeo]

The second one should finish turning off the thumbnails, whether needed or not, I don't know.