Appearance and Customization

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Personas Plus

Personas (now known as lightweight themes) are free, easy-to-install "skins" for Firefox. Personas Plus extends that built-in functionality to give you even more control and easier access to new, popular, and your own favorite themes.

Rated 3 out of 5 stars (931)
1,309 weekly downloads

Forecastfox (fix version)

Get international weather forecasts from AccuWeather.com and display them in any toolbar or statusbar with this highly customizable and unobtrusive extension.

Now Available for: Firefox, Thunderbird and SeaMonkey!

Rated 5 out of 5 stars (205)
1,174 weekly downloads

No need flash plugin on embeded youtube movies No Restart

No need flash plugin on embeded youtube movies

Rated 4 out of 5 stars (2)
830 weekly downloads

Lightning Calendar Tabs

Displays tabs which allows quick navigation between time periods in Lightning calendar. All views of calendar are supported. Color of tab texts can be adjusted.

Rated 4 out of 5 stars (8)
771 weekly downloads

Website to PDF

Convert the current webpage into a PDF file!

Just for now - get also a PRO version for FREE!

Rated 1 out of 5 stars (2)
693 weekly downloads

Menu Wizard

Customize menus : Helps removing, moving and renaming menus and menu items
Colorize important menu for ease of use! (use Style (CSS))
Change or disable any of used keyboard shortcuts
Support: Firefox, Thunderbird and SeaMonkey

Rated 5 out of 5 stars (172)
594 weekly downloads

Simple Locale Switcher

An easier management of the user interface language

Rated 5 out of 5 stars (7)
590 weekly downloads

NoiaButtons No Restart

The 'NoiaButtons' add-on offers cartoonish toolbar button icons (known from Noia themes) for default theme and lightweight themes. Further more lite silver and dark versions of Noia themes are included.

Rated 5 out of 5 stars (14)
519 weekly downloads

Color Folders

Color your Folder Treeview Icons!

Rated 4 out of 5 stars (142)
305 weekly downloads

OutlookAlike BETA

Makes Thunderbird looking like Outlook.

Rated 4 out of 5 stars (29)
295 weekly downloads

Perfect View No Restart

Image viewer with smooth dynamic zoom, pan and rotate. View slide shows of images or files and capture page elements and tab content. Apply image filters. Save images in various formats.

Rated 5 out of 5 stars (6)
270 weekly downloads

HTitle (discontinued)

Hide title bar if window is maximized.

[!] This add-on has been discontinued.

This extension created only for GNOME 3. It can create problems with another DE. However, you can use HTitle at your own risk (need enable "legacy" mode on settings).

Rated 5 out of 5 stars (104)
257 weekly downloads

GNotifier No Restart

Add-on for Firefox and Thunderbird. Replaces built-in notifications with the OS native notifications. It supports most Linux Desktop Environments, Windows 8.1 & 10.

Rated 5 out of 5 stars (11)
214 weekly downloads

Lightweight Themes Manager No Restart

Manage your installed personas (lightweight themes).

Rated 5 out of 5 stars (9)
198 weekly downloads

Firesizer

Allows you to resize the window to specific dimensions.

NOTE: Users of Firefox 29 and above must install "The Addon Bar" extension to use this, as Firesizer uses the add-on bar that has been removed in Firefox 29.

Rated 4 out of 5 stars (129)
183 weekly downloads

Lightning Colors Reminder

Let's show the calendar color on Lightning reminders!

Not yet rated
176 weekly downloads

Send Later Button

A simple button to invoke the (already existing) send later functions.

Not yet rated
175 weekly downloads

Hide Local Folders

Removes the "Local Folders" entry from the folder pane.

Rated 4 out of 5 stars (19)
161 weekly downloads

Noia Fox options

Options manager and fixes for Noia Fox theme 3.x.x

Rated 5 out of 5 stars (15)
157 weekly downloads

Element Inspector No Restart

In the DOM Inspector,quickly navigate to the any elements

Rated 5 out of 5 stars (28)
141 weekly downloads