How-To Geek

Quick Firefox Functionality Tweaks: Undo Close Tab & Resize Text

Are you looking for a way to quickly reopen accidentally closed tabs or resize webpage text from the Status Bar? Then you might want to take a look at the two Firefox extensions that we have to share with you today.

Reopening an Accidentally Closed Tab Easily

Suppose you have multiple tabs open and accidentally close the wrong tab instead of the one next to it that you intended to close? Frustrating would be a good way to describe it.


Usually that would mean going through the “History Menu” (or the “Address Bar”) to reopen that tab. What if you could do it quicker and easier?


With the Quick Undo Tab extension all that you will have to do is right click anywhere within one of the remaining webpages and select the “Quick Undo Tab Command”.


And just like that your “accidentally closed tab” is reopened and focused to the front. Convenient and quick…

Note: There are no options to bother with for the extension.


Changing Text Size Easily from the Status Bar

Everyone has a preferred method for changing the text size in webpages such as using the “View Menu” or “Keyboard Shortcuts”…


Here is another option for those who may prefer changing text size from their “Status Bar”. The Text Scaler extension is easy to install and has no options to worry with. It will add three small icons in the “Status Bar” with “M” being the default/standard size. All that you need to do is simply click on the “S” to make the text smaller or on the “L” to make text larger. “M” will reset back to the standard size…


Here is an example after clicking on “L”…



These extensions may not be suited to everyone but they can be helpful for those who have been wanting this kind of functionality in their Firefox Browsers.


Download the Quick Undo Tab extension (Mozilla Add-ons)

Download the Quick Undo Tab extension (Extension Homepage)

Download the Text Scaler extension (Mozilla Add-ons)

Akemi Iwaya is a devoted Mozilla Firefox user who enjoys working with multiple browsers and occasionally dabbling with Linux. She also loves reading fantasy and sci-fi stories as well as playing "old school" role-playing games. You can visit her on Twitter and .

  • Published 12/8/09

Comments (7)

  1. Anna

    I just wanted to add that there are two other ways to quickly reopen a closed tab. Right-clicking on the tab bar will pop up a menu; one of the options is “undo close tab”. There’s also the keyboard shortcut: ctrl + shift + t. Neither of those ways requires an addon. :)

  2. ray

    I agree with Anna, that undo closed tab extension is just a waste of resources. The functionality is already built in to the browser. All you have to do is right click on the tab bar.

  3. Eric

    There are also the following keyboard shortcuts for resizing text:

    Control + Increase font size
    Control – Decrease font size
    Control 0 Reset font size

  4. Vaibhav Kanwal

    These are nice tips. Will make working with Firefox even more easier. Thanks for sharing

  5. Peter

    For me, the easiest way to re-open accidentally closed tabs is by configuring the Tab Mix Plus extension so that double-clicking any tab or empty space on the tab bar re-opens closed tabs. Quick, easy, and brainless: just the way I like it. Admittedly, Tab Mix Plus offers a large number of customizations and these can take some time to set up your first time ’round. But once you set up Tab Mix Plus the way you like, it can make browsing a lot easier and more convenient. It’s one of the first extensions I install.

    Additional Tab Mix Plus customizations of mine:

    * ctrl-click on a tab copies the tab’s URL
    * shift-click on a tab duplicates the tab
    * single click on a tab toggles foreground display back and forth between that tab and the previously viewed tab — good for jumping back and forth beween two tabs separated by a large number of other tabs
    * new tabs open next to the current tab rather than next to the last tab
    * and many more…

    As for page zooming, I use two extensions:

    Zoom Toolbar, which works pretty much like Text Scaler, except that you “customize” your toolbars and drag its buttons to the location you want them.

    Default Full Zoom Level, which allows you to automatically zoom all new pages to a preset size, or autofit them to the window. This is handy for hi-res widescreen displays. The extension also makes it easy to change the default zooming increments to something different. (I went for more granularity and regularity, with 0.1 differences between zoom levels throughout the scale.) You have the option of having Firefox remember zoom levels for sites or pages that you have custom-zoomed. In short, once you have zoomed a page or site to where you like it, you won’t have to do it again.

    By the way, the present page ( is flagged by my Firefox security functions as using an invalid or unsupported form of compression. I had to open it in Chrome. I may have opted for more security checks than the average Firefox user, but the warning did advise me to let the website owners know.

    Hope some of this was useful!

  6. Zahir Khan

    I agree with everyone. When you can do it using Ctrl + Shift + T why on this earth would you need an addon for this?

  7. zuarxpdc

    nice tutorial..:-)

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