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UAControl |
This extension will allow you to control what string is sent as the User-Agent in HTTP header, per each site (domain).
Note this cannot control the native User-Agent string used by JavaScript (e.g.... |
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control, ua, User Agent, useragent |
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Ubiquity |
Allows the user to use dynamic commands |
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Dynamic Commands |
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uBlock |
µBlock is not (just) an ad blocker; it's a general-purpose blocker. µBlock blocks ads through its support of the Adblock Plus filter syntax. µBlock extends the syntax and is designed to work with... |
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ABE, abp, adblock, ads, block, privacy |
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uBlock Origin |
An efficient blocker: easy on memory and CPU footprint, and yet can load and enforce thousands more filters than other popular blockers out there.
Illustrated overview of its efficiency: https://... |
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adblock, ads, advertisement, antiads, ublock |
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uggc protocol |
Links that have been ROT-13 encoded should just work. This makes http:// scheme (but not https:// yet) links work properly while encoded. The ROT-13 code is a simple Caesar cipher, where characters... |
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ROT, ROT 13, ROT13, uggc, uggc:// |
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Ukranian dictionary |
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Dictionary, spell-check, spell-checker, spell-checking, ukranian, Українська |
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Ukranian language pack |
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langpack, language pack, ukranian, Українська |
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uMatrix |
Point & click to forbid/allow any class of requests made by your browser. Use it to block scripts, iframes, ads, facebook, etc.uMatrix: A point-and-click matrix-based firewall, with many privacy-... |
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block, gorhill, privacy, script, security |
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Undo Close Tab |
Allows you to restore the tab you just closed with a single click—plus it can offer a list of recently closed tabs within a convenient context menu. |
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restoring tabs, tab, Tabs |
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Undo Closed Tabs Button |
Creates a button that reopens closed tabs. |
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Tabs |
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Unicode Input Tool/Converter |
Allows for the lookup of Unicode international symbols. |
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Conversion, Languate |
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UnMHT |
UnMHT allows you to view MHT (MHTML) web archive format files, and save complete web pages, including text and graphics, into a single MHT file in Abrowser. |
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Archival |
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UnPlug |
UnPlug is an extension that allows you to download video from sites such as YouTube, MetaCafe, and Vimeo. At your option, a button is placed on the right of the built-in search box in the browser,... |
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download, Flash, video, youtube |
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Update Scanner |
Monitors web pages for updates. Useful for websites that don't provide Atom or RSS feeds.
Due to changes in Firefox, Update Scanner has been completely rewritten, and not all of the previous features... |
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change, changes, check, monitor, monitoring, RSS, scan, scanner, update, updatescan, updatescanner |
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Upper Sorbian dictionary |
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Dictionary, hornjoserbsce, spell-check, spell-checker, spell-checking, upper sorbian |
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Uppity |
Allows the user to navigate up one directory. |
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Navigation |
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Urdu dictionary |
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Dictionary, spell-check, spell-checker, spell-checking, urdu, اُردو |
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URL Fixer |
URL Fixer corrects typos in URLs that you enter in the address bar. For example, if you type google.con, it will correct it to google.com (asking first, if you enable confirmation).
This version will... |
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address, bar, Mistakes, restartless, typos, urlfixer |
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URL Link |
Allows for the opening of text URL's in new tabs. |
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links, URL |
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User Agent Switcher |
The User Agent Switcher extension adds a menu and a toolbar button to switch the user agent of a browser. |
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User Agent, useragentswitcher |
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User-Agent JS Fixer |
This addon can change the JavaScript User-Agent on a per-site basis, rather than changing for the whole session.
It does nothing by itself, but it complements the functionality of another addon like... |
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control, ua, uacontrol, User Agent, useragent |
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Utopia White |
Bright, cleaned up theme, with black and white buttons. Same as Utopia FFSE White except without the Firefox mascot. |
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bright, clean, modern, monochrome, white |
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Valencian Catalan Language Pack for Firefox |
Language pack for having Firefox interface in Valencian Catalan variant.
This addon enables Firefox interface in Valencian Catalan variant.
Compared to the generic version, Valencian genuine forms... |
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català, catalan, langpack, language pack |
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Vertical Toolbar |
Adds a vertical toolbar at the edge of the window. |
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vertical toolbar |
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Video WithOut Flash |
This extension is glue between Firefox and the video links, not an actual video engine. This extension fetch the direct link to videos using regular expression, XPath, and DOM. When available, a... |
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Flash, html5, TheDrev, video |