best tool on firefox! (for me) Rated 5 out of 5 stars

for me is this tool not tool of the month rather tool of millennium! awesome work aris - my respect!
keep up the fantastic work!

This user has a previous review of this add-on.

Great! Rated 4 out of 5 stars

Great work, this tool really worked for me alot.Thanks

This user has a previous review of this add-on.

Indispensable Rated 5 out of 5 stars

indispensable for bringing back the sanity

Provides much need control Rated 5 out of 5 stars

FF is a decent browser, but the developers cannot leave good enough alone. Many of the newer changes have been for the worse, but this great add-on provides one with the ability to keep things the way they should be.

p.s. I use the (sadly, no longer supported) Noia Fox theme (one of the best ever made) and this add-on seems to work with it flawlessly.

V affects my All-in-one-Sidebar Rated 5 out of 5 stars

Sorry to say, but this great tool affects the size of my letters of my AIO-Sidebar text. It happened in the last week. They are bold and greater than normal. If i deactivate the CTR the letters are normal again.
I tried both addons with a fresh profile and could see it there too.

Thanks a lot for your solution, its a horror, if you have 10 addons and such a lot of preferences and adjustments - and if 1 point is wrong, how to find it.
Do you have a tip how to save the preferences of all addons: with FEBE, Opie, Mozbackup or another solution ?
And thanks once more for your help.

Which AIOS pages are affected by this?
If this is about the add-ons manager, you can disable its alternative appearance on CTRs prefwindow.
CTR prefs > Add-on manager > uncheck 'Alternative appearance'.

If this does not fix the issue, please post a report on CTRs support forum or send me an email. In both cases attach a screenshot of the issue.

V 1.5.8 affects my Addon page theme Rated 5 out of 5 stars

V 1.5.8 affects my Addon page theme. V1.5.7 works fine.
Thank you for response. Beta version and following instructions below fixed my theme problems (Stylish Flat and Dark Addons Theme/Windows 7)

This review is for a previous version of the add-on (1.5.8). 

A fixed version will be released soon. You can install the current beta and uncheck styling of add-on page on CTRs prefwindow or visit about:config and set extensions.classicthemerestorer.alt_addonsm to false

What theme and OS are you using?

Fantastic...thanks for "fixing" my Firefox Rated 5 out of 5 stars

This plugin is a lifesaver! I can't believe this WebExtensions thing that Firefox developers have decided to implement :( Shame on the product managers.

This review is for a previous version of the add-on (1.5.8). 

Sanity restored Rated 5 out of 5 stars

The popularity of this add-on shows how much Mozilla have strayed from the ethos of browser customisation - the very fact that I need it to implement text-instead-of-icons and tabs-below, mystifyingly removed in later versions of FF, proves it.

This review is for a previous version of the add-on (1.5.8). 

"width" of the search box not working Rated 5 out of 5 stars


as title says. as soon as i activate this in the latest betas, the search box with stretches the whole width of firefox, i can't even access the "next/previous" and the rest of the buttons.

great extension anyway.


thanks for your answer. :)

i found the culprit, it is a problem with another extension , findbar tweak.

i found following entry:


and i have no idea how that got there all of the sudden, i haven't opened the preferences of that extension for a long time.

i did set this now to 100 and CTR is working nicely. the findFieldWidth;100 has no effect now, strange. it crippled the search bar when it was 4000 and CTR settings had no effect, now it is the other way around.

This review is for a previous version of the add-on (1.5.7). 

Have you set a too large value for findboxes width?
Open CTRs preference window and uncheck "Toolbars (2) > Findbar > Findboxes width" or set a smaller value.
CTR does not change the width of the findbox, if that option is disalbed.

Alternatively set "extensions.classicthemerestorer.findb_widthcb" to false in about:cofig area.

Firefox has long been unusable without this add-on Rated 5 out of 5 stars

This add-on is such a lifesaver, returning the original sane interface to Firefox that they've gradually been chipping away at over the years, making it more and more unusable. I'm so glad to see (thanks to Add-on Compatibility Reporter) that it's one of my add-ons that are compatible with the upcoming multiprocess change to Firefox. I'm terrified, though, what will happen when Mozilla removes the original XUL and XPCOM add-on APIs and forces add-on authors to use the new WebExtensions APIs instead. I don't see how a cross-browser extension platform could customize a browser's UI to the extent that Classic Theme Restorer currently does. (Would love to see any comments from Aris on this...)

I only have two issues with this near-perfect add-on. This first is that individual options are difficult to locate given the number of them and their not always intuitive organization (a search across all option submenus would be helpful). The second is that unticking the "HTML5 full screen warning" option doesn't work completely. It removes the warning when you first go to full-screen, but the irritating popup still comes up if you mouse to the top of the screen. It would be nice if this could be enhanced so that the warning is disabled across the board, like the Disable HTML5 Fullscreen Alert add-on does.

Anyhow, hope this add-on will live on without much or any functionality loss into the WebExtensions era, and thank you so much for your work to preserve the option of a non-wrongheaded UI.

Update replying to Aris' reply:
Thank you for the detailed response regarding XUL and XPCOM vs. WebExtensions... Damn, I was afraid of that, but was hoping native.js was going to provide a sufficient compatibility layer, since the author of NoScript expects it to solve the limitations of WebExtensions for him (I realize NoScript has much lesser requirements to hook into the browser UI).

Looks like Pale Moon or another Firefox fork will be my browser in the future. Unfortunately I see that many add-ons don't work correctly in Pale Moon, including Classic Theme Restorer (not nearly as necessary since Pale Moon was forked pre-Australis, but I would still use options like returning the traditional UI where there was one tab close button on the right side of the tab bar), Disable HTML5 Fullscreen Alert (no full-screen-api.warning.* about:config options as a workaround, either), Flash Control (though the moribund Flashblock still works for now), iMacros, up-to-date versions of Video DownloadHelper (with updates for websites that need it), and YouTube Video and Audio Downloader. :-( Apparently the Pale Moon developers are strongly considering reforking off of a more recent version of Firefox, though, which would be good for both add-on compatibility and web standards compliance.

I guess Firefox Extended Support Release will be an option in the short term after the change, but then it'll have XUL and XPCOM ripped out of it as well. I suppose going back to SeaMonkey would be one other option (though there haven't been any announcements confirming it will retain XUL and XPCOM that I'm aware of), but I see that FindBar Tweak, Flash Control and Flashblock, iMacros, Noise, QuickJava, Video DownloadHelper, and YouTube Video and Audio Downloader all do not currently work with SeaMonkey. :-(

Yeah, I have no recommendations for rearranging options; a textual search that locates options for you is the only good solution I can think of. OK, no problem -- will continue to use Disable HTML5 Fullscreen Alert for its more complete banishment of that irritation.

This review is for a previous version of the add-on (1.5.7). 


once XUL and XPCOM got removed (about 2nd half of 2017) there is no way this add-on will continue to work, nor will it be possible to port it to WebExtensions API. Mozilla is claiming they want to find a way to make Firefox more customizable through WebExtensions, but at the current point there is nothing in the WebExtension API that could even change a toolbar color or move a button/item. Their priority lies somewhere else.
No matter how many Firefox users dislike such a move and not matter how many users would probably stop using Firefox, nothing will stop Mozilla from actually doing that move like done in the past with Australis, full themes, removal of main features or addition of features nobody ever wanted or used (-> Firefox Hello, Pocket).

You can read more about WebExtensions here:

Basically every add-on, that modifies the browser ui, will stop working once XUL is no more. From my point of view renaming "Extensions/Add-ons" to "WEBextensions" already shows the direction add-ons are meant to go: web-only modifications. If you take a look at Google Chrome, you will see where this is going. The only modifications Chrome allows is changing toolbars and tabs main color through what they call "themes". As a former full theme developer of Noia 4 I can tell, calling "toolbar colors or images a theme" is disrespectful to every developer of real themes and a punch in the face to everyone who spent thousands of hours to keep a full theme compatible to every change Mozilla made.

Al least Vivaldi browser shows what can be done to a browser ui based on Chromium, sonce Google Chrome and Microsoft Edge are a total black-out, when it comes to ui tweaks.


About locating different/new options on CTRs prewindow:
I know it sometimes is hard to find a specific option and I try to add most of them as close to their category meaning as possible, but sometimes they fit into multiple categories and I have to decide where an option goes. I'm open for suggestions, if someone can explain why one option fits more into another category.

The "HTML5 full screen warning" preference persist of two default browser preferences. CTR only offers a switch to modify both at once through CTRs preference window:
about:config > full-screen-api.warning.delay
about:config > full-screen-api.warning.timeout
CTR itself does not do anything to the warning ui. ;-)

It customizes nearly everything, ... Rated 5 out of 5 stars

..., except the white color of the url address bar (FF48.0.2, MacOS 10.8.5). I'd like to have a black url bar with grey text. If C.T.R. could customize that, it would be perfect.

This review is for a previous version of the add-on (1.5.7).  This user has a previous review of this add-on.

Rated 5 out of 5 stars

Very useful! Thanks!

This review is for a previous version of the add-on (1.5.7). 

Great addon for those who want something "unchromified" Rated 5 out of 5 stars

20 pages of customization options, allow everybody to tweak the Firefox UI to their hearts needs :)

This review is for a previous version of the add-on (1.5.7).  This user has a previous review of this add-on.

Belated Review Rated 5 out of 5 stars

I've been using this addon ever since Firefox screwed things up in attempt to cater to the mass market. Awesome work so far, really appreciate the constant attempt to stay compatible with newer versions.

This review is for a previous version of the add-on (1.5.7). 

@Aris: feature request Rated 5 out of 5 stars

<3 this extension so much, thanks for making it for all of us!

Would it be possible to include options to resize the favicon in a tab, as well as the tab itself, in a future version, please?

This review is for a previous version of the add-on (1.5.7). 

The favicon always had and still has 16x16px - 18x18px dimensions. Resizing it would only cause it to be blurry and stretched. As for the tab you already can set tab height and width on CTRs preferences window ("Tabs (1) category").

Makes Firefox useable Rated 5 out of 5 stars

The dev team seems content to continue making Firefox more and more like Chrome (that is to say, terrible). Thankfully Classic Theme Restorer is here to undo most of the damage.

This review is for a previous version of the add-on (1.5.7).  This user has a previous review of this add-on.

Great Rated 5 out of 5 stars

thank you to developping ths add on. it has restored the usefull Firefox UI !

This review is for a previous version of the add-on (1.5.7). 

Just great Rated 5 out of 5 stars

Thank you to giving us back original Firefox. Developer keeps add-on app to date. With this add-on I can really enjoy Firefox after they messed up good browser.

This review is for a previous version of the add-on (1.5.7). 

Hey firefox devs... Rated 5 out of 5 stars

This should not have to be an add-on! Firefox worked just fine, always had options, now, you make us add an add-on just to get back functionality... utterly stupid.... looks like to make firefox work, we have to rely on great developers like the ones who made this, to fix your stupid updates.

This review is for a previous version of the add-on (1.5.7). 

Aris Rated 4 out of 5 stars

I don't really need all the added bells and whistles of this add-on. But you have one thing that no other add-on has, and that is the hide the 'X' on the last tab. I am always accidentally clicking it and closing the browser. I was wondering whether you could just do a separate add-on just for that?


I was with you all the way up to: "This feature not really requires an own add-on".

Thanks anyway.

This review is for a previous version of the add-on (1.5.6). 

This feature not really requires an own add-on.
The script/style can be used in userChrome.css file (create it inside your "Firefox profile / chrome /" folder, if not present) or inside a Stylish style (install Stylish add-on and create a new style).

I posted the code here:

You can also set browser.tabs.closeWindowWithLastTab to false in about:config to not close the window with last tab.