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I wish this were compatible with the current version of firefox. I miss it!
not even session manager can restore old tabs from sessions in which this plugin took over your tabs and unloaded them. after you deinstall the plugin. all that's left are new tabs. complete disaster!!
I used to love this Add-on but it no longer works.
For the past few weeks Unload Tab fails to function. The version of Firefox I'm running is 52.0.2 (32-bit).
I am also having the problem that others are having with some tabs that fail to load losing all history, of what they were trying to load in the first place. : (
Please FIX THIS ADD-ON !!!!!!
If firefox crashes, or needs to be restarted all of the unloaded tabs are permanently lost.
This app used to work very well. It'd save me a lot of Ram while having 100+ tabs opens while not losing information. I don't know what happened, but I think that it was recently updated. It still does most of what I mentioned before, but if your browser were to crash or close for any reason, all of the unloaded tabs become new tabs and useless. I have switched to Suspend Tab which works like this add-on used to work.
Any tabs that are unloaded when firefox closes are lost. This makes the addon practically useless
I regularily end up with 50, 100 or a couple of hundred tabs.
At some point I got annoyed that even tabs who hadn't been used for hours would still eat CPU. Google search results was an example of this: Once or twice a minute it would ping my CPU for no good reason.
This extension unloads old tabs but doesn't close them. That way when I come back they just reload. You can also add exceptions for sites like youtube, in case you like to listen to videos in background tabs.
As others have mentioned it sometimes fails to capture state when Firefox is restarted.
Interferes with the site save function when shutting down browser.
If you use this prepare to have most tabs not reappear after shut down.
This fix will not work with all tabs but it will work with most of them,
the fix is to uncheck bypass cache when restoring a tab option in addon settings.
Unloaded tabs at the time the browser is closed will appear as 'New Tab' once the session is resumed. I Don't often close the browser, but still a major problem. Other than that, Good Addon!
This add-on worked great up until FF 44.0.3. Since then there has been this annoying issue where unloaded tabs reload as blank tabs. 
Same problem reported by others here. Unloaded tabs becoming into "New Tab" and losing URL.
I am encountering the same problem many reported already: Unloaded tabs get lost and cannot be recovered when Firefox crashes.
As other users have stated this add-on seems great to start with until you realize if firefox crashes there is no way to recover your tabs. There is a chrome plug-in that unloads tabs in a way that stores an app url in order to keep the page that the tab was last on so if a 'session' is recorded the page can be re-opened. Without this, this plug-in is useless.
At first I thought it was a great addon, but then I discovered that I was loosing unloaded tabs after a Firefox restart. So in fact it now is useless.
This add-on worked great up until FF 44.0.3. Since then there has been this annoying issue where unloaded tabs reload as blank tabs. If like me you still need to use this add-on then I recommend installing FF 44.0.2 and disabling automatic FF updates. I would still really appreciate it if someone would fix the blank tab issue and update the add-on so it is compatible with the latest version of FF. Then I would consider giving this add-on a 5 star rating!
It now turns unloaded tabs into blank tabs with not even history and no any way to restore.
If the original maker doesn't update it anymore, could someone take over please?
Like many here I keep loosing tab metadata without any reason
muy bueno cambio mi forma de navegar y hacer mas con mozilla.... ya no es tanto una relacion de amor odio con mozila....ahora es mas amor
No fix anymore...
The unloaded tabs become blank and lose the title and address after a restart. What are the alternatives and will there be a fix?
It is a great memory saver, but don't think your unloaded tabs will wait for you after FF closes or crashes.
This is the biggest and so far only flaw: If a tab is unloaded, and you close FF, the tab saves blank. Only solution is to go through your browser history and re-open the tabs manually - not very useful if your browsing sessions usually go over 10 tabs. Please fix this issue and you can have 5 stars from me.
Could you add the feature that we can set how many tabs have be opened to start unloading? Like if there are only 5 tabs open, the addon won't unload anything even after 10 mins cause it won't be necessary. But if there are more than 5 tabs open, it will start unloading and keep 5 most recent tabs open.
I can't load tabs that were suspended before restarting Firefox (45.0 and newer). I was forced to revert to Firefox 44.0.2 :( I know that this is an old version of vulnerabilities, but I can not do.
The author, please reply to reviews with the same complaint when the has released a patched version.
I can't load tabs that were suspended before restarting Firefox (45.0.2)