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Extensions und Themes fuer Mozilla Firefox
Browser erweiterungen
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System- Voraussetzungen

  • Red Hat Linux 7.0 und höher
  • Mac OS X 10.1.x, 10.2.x und höher
  • Windows 98 und höher

Mozilla Firefox Erweiterungen (Extensions) - Übersicht

Mozilla Firefox bietet neben der hohen Sicherheit eine Menge an guten Funktionen. Mit kostenlosen Erweiterungen (Extensions) kann der Funktionsumfang erweitert werden. So kann man sich seine Funktionen selber wie in einem Baukastensystem zusammenstellen. Die integrierte Schnittstelle macht diese Vorgänge einfach. Ein Klick genügt zur Installation. Die Anzahl der Erweiterungen für den Firefox Browser wird ständig grösser.
Mit Themes kann der Browser auch optisch angepasst werden.

Kategorien Uebersicht:


Empfehlenswerte Erweiterungen für Firefox:

   Tabbrowser Extension
Image Zoom
Preferences Toolbar
Image Toolbar
Context Search
MeasureIt AllPeers
weitere... 5 6 7

Developer Tools - Assist in XUL and website design


Bugxula is a client for Bugzilla installations. It aims to let you do everything you can do with the current web-based interface to Bugzilla and more with a rich user interface like that of a desktop or client-server application.


Document validation and analysis Extension for Firefox, Mozilla and Netscape.
Easy to use interface to many free and commercial online validation and analysis services. Validate, analyze, view and inspect documents containing HTML, XHTML, CSS, RDF, RSS, XML, P3P, hyperlinks, metadata and many more. Check Section 508 and WAI compliance of your documents with many helpful services.


Application creation tool built on JSLib and XPTK.
Goal: Create a tool that is intuitive, logical, and real easy to use and understand.


Stylesheet modifier in the Sidebar. Test current stylesheet in live browser.
EditCSS is a useful extension for web developers and web designers, that works for Mozilla Firefox. It allows you to edit current stylesheets of a page in live, and display the result as you type. It appears in a sidebar. The project is based on Jesse Ruderman's "Edit Style" bookmarklet, that has done the essential work.

Extension Uninstaller API

An API for extension uninstallation.

Html Validator (based on Tidy)

Adds HTML validation to the View Page Source of the browser.

JavaScript Console Status

Status bar icon for javascript warnings/errors. Display a statusbar icon for webpage JavaScript errors.

JS Console

Tool for JavaScript developers to write and evaluate code snippets or JS files.


An API Library for other extensions.


Check the validity of links on any webpage.
Check webpage links at a glance with simple color coding.


Developer tool to show information about HTTP headers.

Macro Editor

Easily create/run macros written in Javascript.


Gelungene Messfunktion für Pixelausmasse auf eine beliebigen Website.


An advanced text editor


A JavaScript library providing useful general purpose object-oriented classes.


Tools to easily write and query RDF files.

Small Screen Rendering

Check how a web site renders on a cellphone.


Outstanding JavaScript debugger. Venkman is the code name for Mozilla's JavaScript Debugger. Venkman aims to provide a powerful JavaScript debugging environment for Mozilla based browsers, including Firefox 1.0.x, Firefox 1.5.x, the Netscape 7.x series of browsers and Mozilla milestone builds.

Web Developer

Als ausgesprochen nützlich für Webentwickler erweist sich die Firefox Werkzeugleiste von Chris Pederick. Per Mausklick zur Verfügung stehen Funktionen wie: Stylesheets und Javascript ausschalten, Meta- und Cookie Informationen, Grösse des Browserfensters anpassen, Bilder verstecken, Validierung oder Outline-Effekte für Tabellen. Nur für Nutzer des Firefox Browsers.
Adds a menu and toolbar of web devloper tools.
The Web Developer extension adds a menu and a toolbar to the browser with various web developer tools. It is designed for Firefox and Mozilla, and will run on any platform that these browsers support including Windows, Mac OS X and Linux.

Webpanel Enhancer

Adds some features to Firefox's Webpanel tool.
Tool to have several views in the sidebar : webpanel (send current page/link to the sidebar) sourcepanel (send source to the sidebar) or builtin tools : downloads and plugins are shown in the sidebar


XPTK stands for Cross Platform Tool Kit. This toolkit will start out by providing a simple set of widgets for application developers to use for their XP applications. By having a standard GUI toolkit as part of the infrastructure for Mozilla Application Development, the job of the application author will be greatly simplified.

XUL Console

XUL Console is a Mozilla/Firefox extension to ease the XUL developer work.
Even if you're an expert in XUL coding, you sometimes need to quickly verify some code construction.
And if you're a newbie, you'll probably find XUL Console very handy to try some examples and soon become a XUL Guru.

Download Tools - Ease downloading of files

Download Manager Tweak

Greatly enhances the current download manager. A modification of the Firefox download manager that changes its appearance and allows it to be opened in a separate window, a new tab, or the sidebar.

Download Sort

Automatically save downloads to specific folders based on the file type.

Download Statusbar

Track downloads in a hide-away status bar.


Download files with external programs. DownloadWith is Mozilla/Firefox extension to download files with external programs like wget, prozilla, Downloader for X, Download Accelerator Plus and GetRight.


A number of tools to make media collection more efficient. Magpie is a set of tools that makes saving media from web pages easier - you can save all media of a specific type linked from a web page, save all tabs following the current tab, etc to time stamped folders.

MIME Type Editor

Mozilla's Helper Application preference panel as an extension for Firefox.
Save Link in Folder

Save Link in Folder

Easily save links in personally customized folders.
Links in eigenem Ordner speichern.


A utility for downloading complete websites.

Games - Fun and Games


A Tetris-like game. Blockfall is a Tetris-like game, with hexagonal and triangular variants, and the option to have blocks composed of varying numbers of tiles.


A collection of patience (solitaire) card games. Included are: Aces Up, Black Widow, Canfield, Double Solitaire, Grounds for Divorce, Fan, FreeCell, Golf, Gypsy, Klondike, Maze, Mod 3, Montana, Pyramid, Regiment, Russian Solitaire, Sanibel, SeaHaven Towers, Simple Simon, Spider Solitaire, TriPeaks, Wasp, Whitehead, and Yukon.
Features autoplay, hints, unlimited undo, scoring, animation, and "intelligent" moving of cards when you right click on them.


Play adventure games available in the Z-machine format.


Classic and Hexagonal Minesweeper.

Kiosk Browsing - Useful in web kiosk environments


Auto-Hide FullScreen (a la IE). Hides the toolbars when entering full screen, and contains features like, A la IE floating, customizable static bars, etc.
Supported languages: cs-CZ de-DE en-US fr-FR it-IT ja-JP pl-PL zh-TW

Full Screen

Adds 'Full Screen' toolbar button and context menu command.
by Patrick H. Lauke,


Quickly clear all privacy-related data. xKiosk provides a toolbar button (which you can place wherever you wish via View > Toolbars > Customize... - it's labelled "Paranoia") from which you can quickly clear privacy sensitive data, specifically: history, form info, saved passwords, download history, cookies, and the cache (both disk and in memory cache).
When you click the button you are asked to confirm the action, after which all the data is cleared. It is expected that this could be useful in web kiosks (hence the name).
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