Internetten met Firefox

The powerful and secure Mozilla Firefox web browser is included in Xubuntu. Firefox features tabbed browsing, pop-up blocking, built-in search, and live bookmarks. Also supported are popular plug-ins such as Java, Flash, and RealPlayer.

Firefox can be launched by clicking ApplicationsNetworkFirefox Web Browser.

Alternatieve webbrowsers

As well as the default Firefox Web Browser, Xubuntu also provides a large selection of alternative browsers. A list of some of these is given below:

  • Epiphany webbrowser

  • Konqueror

  • Mozilla Webbrowser

  • Opera

See Hoofdstuk 11, Toepassingen installeren, verwijderen en bijwerken for help on installing new software.

Plugins voor uw webbrowser verkrijgen

Een plugin is een klein programma dat de mogelijkheden van een ander programma uitbreidt. In het geval van webbrowsers maken plugins het doorgaan mogelijk om verschillende typen multimedia af te spelen of om kleine, web-gebaseerde programma's uit te voeren.

Om een lijst van momenteel geïnstalleerde plugins in de Firefox webbrowser te zien, typ “about:plugins” in de adresbalk, en druk op Enter.

Eenvoudig de meest voorkomende plugins installeren

It is possible to install a whole set of commonly-used restricted plugins at once, by installing the xubuntu-restricted-extras package.

Restricted plugins are those which cannot be distributed with Xubuntu because of legal issues surrounding their use in some countries. Check that you are allowed to use this software before installing it. See the Ubuntu website for more information on restricted software.

  1. Install the xubuntu-restricted-extras package from the “Multiverse” repository (see Hoofdstuk 11, Toepassingen installeren, verwijderen en bijwerken).

  2. Herstart de Firefox webbrowser om de bijgevoegde browserplugins beschikbaar te maken.

Naast de plugins en de multimedia-codecs, worden Java en een aantal Windows-lettertypen geïnstalleerd.

The following plugins and codecs are installed by the xubuntu-restricted-extras package:

  • flashplugin-nonfree

  • libdvdread3

  • liblame0

  • msttcorefonts

  • libxine1-ffmpeg

  • sun-java6-plugin

  • unrar

Audio en video-plugins

Op het internet worden veel verschillende multimedia-indelingen gebruikt, en dus kan het voorkomen dat u sommige audio- of videobestanden niet kunt afspelen zonder eerst de juiste plugin te installeren.

Zie de volgende artikelen voor informatie over het installeren en het gebruiken van multimediaplugins in de Firefox webbrowser:

Flash multimedia-plugin

Flash is een fabrikantseigen plugin die u de mogelijkheid geeft om op het internet video's en animaties te bekijken.

Om in de Firefox webrowser Flash-beelden te bekijken:

  1. Install the flashplugin-nonfree package from the “Multiverse” repository (see Hoofdstuk 11, Toepassingen installeren, verwijderen en bijwerken).

  2. Herstart Firefox om de plugin beschikbaar te maken.

Het installeren van het pakket zoals hierboven is beschreven, zal de plugin downloaden en installeren. Om dit te kunnen doen hebt u een internetverbinding nodig. Als u na het installeren van de toepassing de plugin later moet downloaden en installeren, typt u de volgende opdracht in een terminalvenster:

sudo dpkg-reconfigure flashplugin-nonfree

Java browserplugin

Sommige websites gebruiken kleine Java-programma's, die de Java-plugin vereisen om te kunnen worden uitgevoerd.

Deze instructies zijn alleen voor i386 en AMD64 computers. De plugin is momenteel niet voor andere computers beschikbaar.

  • If you are using an i386 computer install the sun-java6-plugin package from the “Multiverse” repository.

  • Als u een AMD64 computer hebt, installeer het j2re1.4-mozilla.plugin pakket uit de “Multiverse” pakketbron.

See Hoofdstuk 11, Toepassingen installeren, verwijderen en bijwerken for help on installing new software.

For a more complete Java installation, see de paragraaf “Java”.

Customizing Firefox

The Firefox Web Browser is highly customizable - you can change the way it looks and works to suit your needs, with very little effort.

Adding and removing toolbar buttons

By default, Firefox has a toolbar consisting of five large buttons at the top of its screen, which you can use to navigate the web. These are in a particularly convenient location because you will often find yourself using these buttons, so it makes sense to put them where they are easy-to-reach. But what if there are certain other actions which you often perform which you'd like to make just as easy to reach?

To add new buttons to the toolbar:

  1. Right-click any of the (active) buttons on the toolbar and select Customize... to open the Customize Toolbar window

  2. Look for a button which you would like to add to the toolbar. The New Tab button is particularly useful

  3. Drag the button onto the desired location on the toolbar

  4. Press Done

You can remove items from the toolbar in a similar way. Instead of dragging a button from the Customize Toolbar window to the toolbar, drag it from the toolbar into the Customize Toolbar window.

If you would like to change the way that the toolbar buttons are displayed, select a different option from the drop-down list labelled Show.

Changing the theme

Firefox looks like any other application on your computer. However, you can completely change the way it looks by changing the theme. There are many different themes available - most of these have been made by members of the Firefox community and are available for free.

[Opmerking]

Only install themes from websites you trust. It is best to only use the official website, addons.mozilla.org

[Let op]

Some themes may be poorly designed, and can occasionally cause Firefox to experience problems. If this happens, just remove the theme.

To apply a new theme
  1. Press ToolsAdd-ons and select the Themes tab

  2. Press Get Themes. You will be taken to a website with a large collection of themes to choose from

  3. Choose a theme you like and press the Install Now button on that theme's page

  4. A window will appear, asking if you would like to install the theme. Press Install Now

  5. Go back to the Add-ons window and wait for the theme to be downloaded. The progress of the download is shown in the Installation tab

  6. Once the download and installation has finished, go to the Themes tab

  7. Select the newly-installed theme and press Use Theme

  8. Go back to the Installation tab and press Restart Firefox to apply the new theme

To switch to another theme, which is already installed
  1. Press ToolsAdd-ons and select the Themes tab

  2. Select the theme you want to use and press Use Theme

  3. Restart Firefox to apply the new theme

To remove a theme
  1. Press ToolsAdd-ons and select the Themes tab

  2. Select the theme you want to remove and press Uninstall

  3. You will be asked for confirmation. Press Uninstall

  4. The theme will be uninstalled when you close Firefox

De standaard lettergrootte wijzigen

Als u vindt dat het lettergrootte in Firefox te klein is om gemakkelijk te kunnen lezen, dan kunt u de standaardlettergrootte vergroten.

  1. Klik op BewerkenVoorkeuren en kies de Inhoud tab.

  2. Wijzig onder Lettertypen & kleuren de Grootte naar een hogere waarde (rond 20 is vaak het meest comfortabel om te lezen).

  3. Tekst op webpagina's zou meteen groter moeten zijn. Klik op guibutton>Sluiten

Om tijdelijk de tekstgrootte van een webpagina te vergroten, klikt u op BeeldTekstgrootteVergroten. U kunt ook de Ctrl-toets ingedrukt houden en met uw muiswiel omlaag scrollen, of druk op Ctrl++.

Om de tekst naar de normale grootte terug te brengen, klikt u op BeeldTekstgrootteNormaal.

De startpagina wijzigen

Als u Firefox opent, is de eerste pagina die wordt weergegeven, uw startpagina. Dit is doorgaans een webpagina die u elke keer wilt zien als het internet gebruikt, zoals een nieuwssite, zoekmachine of een online e-mailaccount.

Om uw startpagina te wijzigen:

  1. Open de pagina die u als uw startpagina wilt gebruiken

  2. Klik op BewerkenVoorkeuren en kies het tabblad Algemeen.

  3. Klik onder Opstarten op de knop Huidige pagina gebruiken, en klik vervolgens op Sluiten.

Als u Firefox opstart of op de Startpagina-knop drukt, zult u naar uw nieuwe startpagina gaan.

Als u meer dan één startpagina wilt hebben, opent u alle pagina's die u als startpagina wilt gebruiken in aparte tabs. Volg vervolgens bovenstaande procedure.

Extending Firefox

You can add all sorts of useful extras to Firefox by installing Extensions. These provide features such as advert-blocking, news readers and a download manager. There are literally thousands of extensions to choose from.

To install a new extension
  1. Press ToolsAdd-ons and select the Extensions tab

  2. Press Get Extensions. A web page will open with a collection of extensions that you can install

  3. Find an extension you like and press the Install Now button on the page for that extension

  4. You will be asked to confirm that you want to install the extension. Press Install Now

  5. Go back to the Add-ons window and select the Installation tab to watch the progress of the installation

  6. Once installation is complete, press Restart Firefox to enable the extension

To change the settings of an extension

Many extensions have a number of settings that you can change.

  1. Press ToolsAdd-ons and select the Extensions tab

  2. Select the extension that you want to change the settings of

  3. Press Preferences and change settings as appropriate

Some extensions may not have any settings for you to change, and so will not have a Preferences button.

To remove an extension
  1. Press ToolsAdd-ons and select the Extensions tab

  2. Select the extension you want to remove and press Uninstall

  3. You will be asked to confirm that you want to uninstall the extension. Press Uninstall

  4. Restart Firefox to fully remove the extension

Handling private information in Firefox

Protecting your privacy online is important, and Firefox offers many ways for you to protect or remove private information such as your passwords, which websites you have been looking at and so on.

Clearing your browsing history and other data

When you browse the web, a list of the pages that you have recently visited is stored by Firefox. This is called the browsing history, and is useful if you want to go back to a site that you recently visited, but can't remember the web address.

However, if someone else has access to your user account, they can look at the browsing history and see which websites you have been visiting.

As well as the browsing history, Firefox stores other information about how you use the web. This information is intended to make browsing websites faster and more convenient for you, but you may wish to remove it every so often to help protect your privacy.

To clear the browsing history list and other information
  1. Press ToolsClear Private Data...

  2. Tick the items that you want to clear and press Clear Private Data Now

  3. The items you selected will be cleared

Searching for things on the web

The easiest way to find something on the Internet is to search for it using a search engine such as Google. Firefox has a handy search box feature which makes searching for information quick and easy.

The search box can be found in the top right of the Firefox window.

To search for something

  1. Click the search box and type what you want to search for, e.g. 'weather report'

  2. Press the Return key. The search will be carried out in the current tab

The default search engine in Firefox is Google. However, there are several other types of search that you may find useful, including Wikipedia (which searches an online encyclopedia) and Last.fm (which searches for music-related information).

To change which search engine is being used:

  1. Press the button immediately to the left of the search box (it has a small icon and a down-arrow)

  2. Select the search engine that you want to use from the list

  3. Click the search box and type what you want to search for

  4. Press the Return key to carry out the search

Bookmarking pages for viewing later

If you visit a particular website often, or just want to remember a page for viewing later, why not create a bookmark for that page?

To create a bookmark:

  1. Visit the page you want to bookmark

  2. Press BookmarksBookmark This Page...

  3. If you like, change the name of the bookmark

  4. Under Create in, choose which bookmarks folder you would like to put the bookmark in

  5. Press Add to create the bookmark

Bookmarks can be organized into different folders and locations. All of you bookmarks can be accessed by using the Bookmarks menu or by pressing ViewSidebarBookmarks.

Add sites which you use particularly often to the Bookmarks Toolbar Folder. The Bookmarks Toolbar is shown immediately below the Address Bar, so it is very easy to access.

For a quick way of adding a bookmark to the Bookmarks Toolbar, go to the Address Bar and drag the small icon immediately to the left of the web address onto the toolbar.

If you have a very large collection of bookmarks, press BookmarksOrganize Bookmarks... for a tool to help you organize them.