Firefox add-on with keyword - override
Add-ons (also known as extensions) are small programs that run inside web browsers like Mozilla Firefox. They add extra features to the browser without having to download anything new. You can use extensions to make browsing faster, easier, and safer. Some extensions even let you do things like translate text on websites, search the web, and play games.
There are over 28,000 Firefox-addons and 480,000 themes, making it hard to find the best ones. so we have created a way to sort through all of them. Use the dropdown above to set different filters. Add-ons are sorted by number of active users.
To set even more advanced filters, and sort the Firefox add-ons differently, please visit our Advanced search tool. Note that Advanced search tool is only available to premium members.
![New Tab Override](https://addons.mozilla.org/user-media/addon_icons/626/626810-64.png?modified=mcrushed)
#1, New Tab Override
![New Tab Override](https://addons.mozilla.org/user-media/addon_icons/626/626810-64.png?modified=mcrushed)
![CSS Override](https://addons.mozilla.org/user-media/addon_icons/2603/2603342-64.png?modified=18c426cd)
#2, CSS Override
![CSS Override](https://addons.mozilla.org/user-media/addon_icons/2603/2603342-64.png?modified=18c426cd)
![Resource Override](https://addons.mozilla.org/user-media/addon_icons/2622/2622669-64.png?modified=f9e60f74)
#3, Resource Override
![Resource Override](https://addons.mozilla.org/user-media/addon_icons/2622/2622669-64.png?modified=f9e60f74)
![Override Text Encoding](https://addons.mozilla.org/user-media/addon_icons/2741/2741489-64.png?modified=443ff633)
#4, Override Text Encoding
![Override Text Encoding](https://addons.mozilla.org/user-media/addon_icons/2741/2741489-64.png?modified=443ff633)
![json-content-type-override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#5, json-content-type-override
![json-content-type-override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#6, The Halloween Override
![uBlock Origin](https://addons.mozilla.org/user-media/addon_icons/607/607454-64.png?modified=mcrushed)
#7, uBlock Origin
![uBlock Origin](https://addons.mozilla.org/user-media/addon_icons/607/607454-64.png?modified=mcrushed)
![User agent override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#8, User agent override
![User agent override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![Cookie Override](https://addons.mozilla.org/user-media/addon_icons/2693/2693733-64.png?modified=3be75d83)
#9, Cookie Override
![Cookie Override](https://addons.mozilla.org/user-media/addon_icons/2693/2693733-64.png?modified=3be75d83)
![SelectTab Shortcut Override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#10, SelectTab Shortcut Override
![SelectTab Shortcut Override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![Simple Translate](https://addons.mozilla.org/user-media/addon_icons/857/857110-64.png?modified=260ce8c8)
#11, Simple Translate
![Simple Translate](https://addons.mozilla.org/user-media/addon_icons/857/857110-64.png?modified=260ce8c8)
![User-Agent Switcher](https://addons.mozilla.org/user-media/addon_icons/812/812521-64.png?modified=1699730142)
#12, User-Agent Switcher
![User-Agent Switcher](https://addons.mozilla.org/user-media/addon_icons/812/812521-64.png?modified=1699730142)
![Allow Right-Click](https://addons.mozilla.org/user-media/addon_icons/984/984446-64.png?modified=88632a19)
#13, Allow Right-Click
![Allow Right-Click](https://addons.mozilla.org/user-media/addon_icons/984/984446-64.png?modified=88632a19)
![PepperTab - Override new tab with cool widgets](https://addons.mozilla.org/user-media/addon_icons/2607/2607147-64.png?modified=982bcfba)
#14, PepperTab - Override new tab with cool widgets
![PepperTab - Override new tab with cool widgets](https://addons.mozilla.org/user-media/addon_icons/2607/2607147-64.png?modified=982bcfba)
![OverbiteWX](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#15, OverbiteWX
![OverbiteWX](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![no track | Override Copied Links](https://addons.mozilla.org/user-media/addon_icons/2618/2618104-64.png?modified=8d6e41c5)
#16, no track | Override Copied Links
![no track | Override Copied Links](https://addons.mozilla.org/user-media/addon_icons/2618/2618104-64.png?modified=8d6e41c5)
![RoboForm-Override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#17, RoboForm-Override
![RoboForm-Override](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#18, Snow Covered Berries
![startpage](https://addons.mozilla.org/user-media/addon_icons/2258/2258025-64.png?modified=c46457f1)
#19, startpage
![startpage](https://addons.mozilla.org/user-media/addon_icons/2258/2258025-64.png?modified=c46457f1)
![Moesif Origin & CORS Changer](https://addons.mozilla.org/user-media/addon_icons/990/990387-64.png?modified=fdef6420)
#20, Moesif Origin & CORS Changer
![Moesif Origin & CORS Changer](https://addons.mozilla.org/user-media/addon_icons/990/990387-64.png?modified=fdef6420)
![History Overrides](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#21, History Overrides
![History Overrides](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![History Overrid](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#22, History Overrid
![History Overrid](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![Netflix Max Bitrate](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#23, Netflix Max Bitrate
![Netflix Max Bitrate](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
![Maximo Timeout Override](https://addons.mozilla.org/user-media/addon_icons/2604/2604904-64.png?modified=a30e8bd4)
#24, Maximo Timeout Override
![Maximo Timeout Override](https://addons.mozilla.org/user-media/addon_icons/2604/2604904-64.png?modified=a30e8bd4)
![Disable Ctrl-Q and Cmd-Q](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)
#25, Disable Ctrl-Q and Cmd-Q
![Disable Ctrl-Q and Cmd-Q](https://addons.mozilla.org/static-server/img/addon-icons/default-64.d144b50f2bb8.png)