Difference between revisions of "Opera"

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{{i18n|Opera}}
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[[bg:Opera]]
[[Category:Web Browser (English)]]
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[[cs:Opera]]
 
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[[de:Opera]]
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[[es:Opera]]
 
[[fr:opera]]
 
[[fr:opera]]
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[[it:Opera]]
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[[pt:Opera]]
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[[Category:Web Browser]]
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{{Article summary start}}
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{{Article summary text|Installing and configuration of the Opera browser and plugins.}}
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{{Article summary heading|Related}}
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{{Article summary wiki|Browser Plugins}}
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{{Article summary wiki|Firefox}}
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{{Article summary wiki|Chromium}}
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{{Article summary end}}
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[http://www.opera.com Opera] is a free of charge web browser developed since 1994 by the Norwegian company [[Wikipedia:Opera Software|Opera Software]]. It is known for being the first to bring new browsing features to the world that have become common on all web browsers, such as tabbed browsing and built-in search.
  
[http://www.opera.com Opera] is a [[Wikipedia:Web_browser|web browser]] and [[Wikipedia:Internet_suite|Internet suite]] developed by [http://www.opera.com/company/ Opera Software]. The browser handles common Internet-related tasks such as displaying websites, sending and receiving e-mail messages, managing contacts, IRC online chatting, downloading files via BitTorrent, and reading web feeds.<sup>[1]</sup> Opera consumes approximately 36 MB installed on disk and is built for speed, incorporating numerous options and shortcuts to simply web tasks. <small>:<sup>[1]</sup> "Opera_(web_browser)". <u>Wikipedia</u>. 19 Sep. 2010. Wikimedia Foundation, Inc. 22 Sep. 2010 <http://en.wikipedia.org/wiki/Opera_(web_browser)></small>.
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Opera continues to innovate with its integrated mail client, one-click bookmarking, tab stacks (a way of organizing your tabs) and very good support for [[Wikipedia:HTML5|HTML5]] features.
  
 
== Installation ==
 
== Installation ==
 +
Opera can be [[Pacman|installed]] with the package {{Pkg|opera}}, available in the [[official repositories]].
  
The {{Package Official|opera}} package can be found in the [[Official Repositories|official repositories]].
+
Development versions can be found in the [[AUR]]:
 +
* {{AUR|opera-beta}} - a beta release version.
 +
* {{AUR|opera-next}} - an alpha/development version.
  
 
== Plugins ==
 
== Plugins ==
Opera can use Mozilla-based plugins; see [[Browser Plugins]] for details. The plugin path can be specified under {{Codeline|Settings > Preferences > Advanced > Content > Plug-in Options}}
+
Opera can use Netscape-based plugins that are supported by most major browsers, like Firefox and Chromium. For details about different plugins and installation instructions see [[Browser Plugins]]. In Opera, the plugin path can be specified under ''Settings > Preferences... > Advanced > Content > Plug-in Options''.
  
=== 64-bit Flash ===
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=== Adobe Flash ===
Install the {{Package Official|flashplugin}} package from the [[Official Repositories|official repositories]].
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{{Box||See the main article: [[Browser Plugins#Flash Player]]|#E5E5FF|#FCFCFC}}
  
==Performance tweaks==
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=== Java Support ===
===Disabling features and services===
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{{Box||See the main article: [[Browser Plugins#Java (IcedTea)]]|#E5E5FF|#FCFCFC}}
One of the keys to maximizing application performance is to disable undesired features and services through the native [http://www.opera.com/browser/tutorials/personalize/behavior/ opera:config Preferences Editor].
+
  
* Start Opera without the default system tray icon by unchecking the following option:
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=== Adblock ===
opera:config#UserPrefs | ShowTrayIcon
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Install Adblock support using the {{AUR|opera-adblock-complete}} package from the [[AUR]].
  
Other commonly disabled feature sets include but are not limited to:
+
== Performance tweaks ==
 +
Although Opera is quite fast on modern hardware, it can be tweaked even more. For further examples, see the [http://operawiki.info/operaperformance Opera wiki page] on performance.
  
* BitTorrent [http://farm5.static.flickr.com/4113/5026641169_926bc07c3e_b.jpg Example Screenshot]
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=== Disabling features and services ===
* Geolocation
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One of the keys to maximizing application performance is to disable undesired features and services through the native [http://www.opera.com/browser/tutorials/personalize/behavior/ opera:config Preferences Editor.]
* Multimedia
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* Web Server
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Additional command-line options are available for further control over browser features and services:
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Some commonly disabled features are:
 +
* '''Systray Icon''': uncheck ''Show Tray Icon'' under opera:config#UserPrefs.
 +
* '''BitTorrent''': uncheck ''Enable'' under opera:config#BitTorrent.
 +
* '''Geolocation''': uncheck ''Enable geolocation'' under opera:config#Geolocation.
 +
* '''Multimedia''': unckeck desired options under opera:config#Multimedia.
 +
* '''Web Server''': uncheck ''Enable'' under opera:config#Web Server.
  
* Start Opera without the default internal e-mail client
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To more easily find these options just write the respective path (without spaces) in the address bar, for example {{ic|<nowiki>opera:config#UserPrefs|ShowTrayIcon</nowiki>}} or use the build-in search.
 +
 
 +
==== Disable the e-mail client ====
 +
Additional command-line options are available for further control over browser features and services. To start Opera without the default internal e-mail client:
 
  $ opera -nomail
 
  $ opera -nomail
:*Alternatively, if you want to permanently disable the internal e-mail client without using "-nomail", you can uncheck the setting "Show E-mail Client" in opera:config
 
opera:config#UserPrefs|ShowE-mailClient
 
  
* Start Opera without an [[Wikipedia:ARGB|ARGB]] (32-bit) visual, without [http://www.lirc.org/ LIRC] infrared control support and {{Codeline|mailto:}} links disabled:
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Alternatively, if you want to permanently disable the internal e-mail client you can uncheck the ''Show E-mail Client'' option under opera:config#UserPrefs.
$ opera -noargb -nolirc -nomaillinks
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===Improving Flash performance===
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==== Disable ARGB, LIRC and mailto links ====
* Set the following environment variables before starting Opera, or export the entries in [[xinitrc]], or [[Startup files#Shells|.bash_profile]], or for system-wide changes, to {{Filename|/etc/profile}}:
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To start Opera without [[Wikipedia:ARGB|ARGB]] (32-bit) visuals, [http://www.lirc.org/ LIRC] infrared control support and with {{ic|mailto:}} links disabled:
 +
$ opera -noargb -nolirc -nomaillinks
 +
 
 +
=== Improving Flash performance ===
 +
To improve Flash performance you can set the following environment variables before starting Opera, or export the entries in [[xinitrc]], or [[Bash|~/.bash_profile]], or for system-wide changes, to {{ic|/etc/profile}}:
 
   OPERAPLUGINWRAPPER_PRIORITY=0
 
   OPERAPLUGINWRAPPER_PRIORITY=0
 
   OPERA_KEEP_BLOCKED_PLUGIN=1
 
   OPERA_KEEP_BLOCKED_PLUGIN=1
  
====xinitrc example====
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Another environment variable which may help resolve Flash issues:
#!/bin/bash
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#
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/usr/bin/urxvtd -q -f -o &
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export OPERAPLUGINWRAPPER_PRIORITY=0
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export OPERA_KEEP_BLOCKED_PLUGIN=0
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exec ck-launch-session /usr/bin/jwm
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+
====Command-line example====
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$ OPERAPLUGINWRAPPER_PRIORITY=0 OPERA_KEEP_BLOCKED_PLUGIN=1 opera &
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* Another environment variable which may help resolve Flash issues:
+
 
+
 
  GDK_NATIVE_WINDOWS=1
 
  GDK_NATIVE_WINDOWS=1
  
 
See the blog article [http://my.opera.com/ruario/blog/flash-problems-on-linux Flash problems on Linux?] for additional details.
 
See the blog article [http://my.opera.com/ruario/blog/flash-problems-on-linux Flash problems on Linux?] for additional details.
  
=== Profile in tmpfs ===
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==== .xinitrc example ====
The default Opera profile is typically located in {{filename|$HOME/.opera}}. This profile can be relocated to an available [http://en.wikipedia.org/wiki/Tmpfs tmpfs] filesystem, including {{filename|/tmp}}, or {{filename|/dev/shm}} for improvements in application response as the the entire profile is now stored in RAM. Another benefit is a reduction in disk read and write operations, of which SSD drives benefit the most.
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{{hc|~/.xinitrc|<nowiki>
 +
...
 +
export OPERAPLUGINWRAPPER_PRIORITY=0
 +
export OPERA_KEEP_BLOCKED_PLUGIN=0
 +
...</nowiki>
 +
}}
  
* At system startup, recursively copy the folder {{filename|/home/arch/.opera}} to {{filename|/dev/shm/.opera}} while preserving mode, ownership and file timestamps:
+
==== Command-line example ====
  #!/bin/bash
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To use the variables from the command line call Opera as:
#
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  $ OPERAPLUGINWRAPPER_PRIORITY=0 OPERA_KEEP_BLOCKED_PLUGIN=1 opera &
# /etc/rc.local
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#
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cp -pR /home/USER/.opera /dev/shm
+
  
* [http://en.wikipedia.org/wiki/Rsync rsync] can be used in place of the [http://en.wikipedia.org/wiki/Cp_(Unix) cp] command:
+
=== Profile in tmpfs ===
#!/bin/bash
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Relocate the browser profile to a [[Fstab#tmpfs|tmpfs]] filesystem, including {{ic|/tmp}} for improvements in application response as the entire profile is now stored in RAM. Another benefit is a reduction in disk read and write operations, of which SSDs benefit the most.
#
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# /etc/rc.local
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#
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rsync -a /home/USER/.opera /dev/shm
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#!/bin/bash
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There are currently two ways of doing this:
#
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* using [[Profile-sync-daemon]], that automatically detects and relocates the Opera profile to tmpfs.
# /etc/rc.local.shutdown
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* using the {{ic|-pd}} command-line flag to tell Opera where to store its profile data:
#
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  $ opera -pd /tmp/opera
  rsync -a --delete /dev/shm/.opera /home/USER
+
  
* To copy only bookmarks and session files back to the disk profile:
+
== Appearance ==
  
#!/bin/bash
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=== Themes ===
#
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Although Opera is cross-platform, it can be made to integrate very well into various Linux desktop environments.
# /etc/rc.local.shutdown
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; Qt: To make the menus look integrated with Qt, install your preferred Qt theme and apply it by using {{ic|qtconfig}}.
#
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; KDE: To make Opera use [[KDE]] icons, you can install a theme such as [http://my.opera.com/community/customize/skins/info/?id=8141 this one].
rsync -a --delete /tmp/.opera/sessions/ /home/bbs/.opera/sessions &
+
; GTK+: A nice GTK+ skin that uses the Tango icon theme can be found [http://my.opera.com/community/customize/skins/info/?id=3465 here].
rsync -a /tmp/.opera/bookmarks.adr /home/bbs/.opera
+
  
* In the case of [http://aur.archlinux.org/packages.php?ID=48680 opera-next], launch Opera with the {{Codeline|-pd}} option to set the location of the alternative Opera preferences folder:
 
  
$ opera -pd /dev/shm/.opera
+
=== Tab modes ===
 +
Opera has native support for tab cascading and tiling mode. Appropriate buttons can be found by activating the "Main" toolbar or by dragging and dropping the buttons anywhere desired, found in ''Menu > Appearance > Buttons > Browser''.
  
* Any number of command-line options may be included in the string:
+
=== Fonts ===
 
+
Fonts can be configured under ''Settings > Preferences... > Advanced > Fonts''.  
$ opera -newprivatetab -noargb -nolirc -nomail -nomaillinks -pd /tmp/.opera
+
 
+
===Disabling Xft fonts===
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[http://en.wikipedia.org/wiki/Xft Xft] font rendering can consume unnecessary resources on certain systems. Avoid the use of Xft fonts by unchecking the following option:
+
 
+
opera:config#UserPrefs|EnableXftFonts
+
 
+
{{Note|In newer versions of Opera, this setting does not exist.}}
+
 
+
== Microsoft fonts and Opera ==
+
Configure fonts under {{Codeline|Settings > Preferences > Advanced > Fonts}}. If {{AUR|ttf-ms-fonts}} has been installed before running Opera for the first time, Opera will use those fonts by default, regardless of what is specified by local GTK options, [[GNOME]], or KDE font management. To force existing installations of Opera to use the options set by your font manager:
+
  
 +
If the {{AUR|ttf-ms-fonts}} package has been installed before running Opera for the first time, Opera will use those fonts by default, regardless of what is specified by local GTK+ options, [[GNOME]] or KDE font management. To force existing installations of Opera to use the options set by your system:
 
* Close all running instances of Opera.
 
* Close all running instances of Opera.
 
* Un-install the {{AUR|ttf-ms-fonts}} package.
 
* Un-install the {{AUR|ttf-ms-fonts}} package.
* Move the existing profile folder: {{Codeline|mv -i ~/.opera ~/.opera.bak}}
+
* Move the existing profile folder: {{ic|mv -i ~/.opera ~/.opera.bak}}
 
* Run an instance of Opera and verify that your font manager settings have been applied.
 
* Run an instance of Opera and verify that your font manager settings have been applied.
* Restore bookmarks and desired filter files from {{Filename|~/.opera.bak}} to {{Filename|~/.opera}} except for the {{Filename|operaprefs.ini}} file.
+
* Restore bookmarks and desired filter files from {{ic|~/.opera.bak}} to {{ic|~/.opera}} except for the {{ic|operaprefs.ini}} file.
 
* Re-install the {{AUR|ttf-ms-fonts}} package, if desired.
 
* Re-install the {{AUR|ttf-ms-fonts}} package, if desired.
  
== UI appearance ==
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== Private tabs ==
* To make the menus look integrated with Qt, install your preferred Qt4 theme and apply it by using {{Codeline|qtconfig}}.
+
To browse without leaving obvious traces of the Web sites you visit, you can use a private tab. When you close a private tab, the following data related to the tab is deleted:
* To make Opera use [[KDE]] icons, download a native skin such as [http://my.opera.com/community/customize/skins/info/?id=8908 fixed_window_skin]
+
* A nice gtk2 skin with tango icon theme can be found [http://my.opera.com/community/customize/skins/info/?id=6960 here]. Integrates very well to xfce4 and other gtk2 environments.
+
 
+
==Private tabs==
+
To browse without leaving any trace of the Web sites you visit, you can use a private tab. When you close a private tab, the following data related to the tab is deleted:
+
 
* Cache
 
* Cache
 
* Cookies
 
* Cookies
Line 131: Line 122:
 
* Logins
 
* Logins
  
This is similar to the [http://www.google.com/support/chrome/bin/answer.py?hl=en&answer=95464 --incognito option] in Chrome/[[Chromium]] and [https://wiki.mozilla.org/PrivateBrowsing PrivateBrowsing] in [[Firefox]].
+
This is similar to the [http://www.google.com/support/chrome/bin/answer.py?hl=en&answer=95464 --incognito option] in Chrome/[[Chromium]] and [https://wiki.mozilla.org/PrivateBrowsing PrivateBrowsing] in [[Firefox]].  
 
+
* Open the URL (if a URL is defined) in Opera with a private tab.
+
  
 +
To open a private tab from the command-line use:
 
  $ opera -newprivatetab
 
  $ opera -newprivatetab
  
 
To ensure only private tabs are used throughout the duration of the browsing session:
 
To ensure only private tabs are used throughout the duration of the browsing session:
* Set {{Codeline|Settings > Preferences... > General > Startup > Start without open tabs}}
+
* Set ''Settings > Preferences... > General > Startup > Start without open tabs''.
* Clear any entries in {{Codeline|Settings > Preferences... > General > Home page option}}
+
* Clear any entries in ''Settings > Preferences... > General > Home page option''.
* Enable {{Codeline|Settings > Preferences... > Advanced > Tabs > Additional tab options... > Allow windows with no tabs}}
+
* Enable ''Settings > Preferences... > Advanced > Tabs > Additional tab options... > Allow windows with no tabs''.
  
== Java Support ==
+
To open a new window for private browsing when already running Opera you can just press {{Keypress|Ctrl+Shift+N}} or look under ''Menu > New Tabs and Windows > New Private Window''. All subsequent opened tabs with be private as well.
  
{{Note|Oracle's proprietary version of the JRE has been pulled from the [[Official_Repositories#.5Bcommunity.5D|[community] repository]]. Read [http://mailman.archlinux.org/pipermail/arch-general/2011-August/021671.html here] for more information.}}
+
== Accessibility Tips ==
* ''(Recommended)'' Install the open source [[Wikipedia:Openjdk|OpenJDK]] environment along with the [http://icedtea.classpath.org/wiki/IcedTea-Web IcedTea-Web] browser plugin provided by these two packages: {{Pkg|openjdk}} and {{Pkg|icedtea-web}}.
+
  
{{Note|If you want to use Java version 7, use the packages {{Pkg|jre7-openjdk}} and {{Pkg|icedtea-web-java7}} instead.}}
+
=== Disable text selection ===
  
* Alternatively, install the proprietary, closed source [[Wikipedia:JRE#Execution_environment|Java Runtime Environment]] from Oracle from the [[AUR]]: {{Package AUR|jre}}
+
It is possible to disable text selection in Opera. However, text selection through JavaScript will still work (for example in forms, etc.). To get to the setting follow the link bellow:
 +
opera:config#System|DisableTextSelect
  
See [[Java#OpenJDK_JVM]] for additional details and references.
+
=== Grab and scroll mode ===
  
== Troubleshooting ==
+
Besides setting text selection off, grab and scroll mode makes page scrolling possible with mouse dragging. It is very useful, especially when you have a touchscreen. Copy and paste the link bellow to get to the mentioned setting.
 +
opera:config#UserPrefs|ScrollIsPan
  
=== Java on Arch64 ===
+
It is also possible to change this setting on the fly by dragging and dropping the appropriate Opera button into a toolbar. The button can be found in ''Menu > Appearance > Buttons > Browser View''.
  
{{Accuracy}}
+
=== Long pressing a link opens it in a background tab (extension) ===
  
1. Add to {{Filename|~/.bash_profile}}, or {{Filename|/etc/profile}} to make this setting affect all logins:
+
It is possible to open up any long-clicked link in a new background tab by installing [https://addons.opera.com/en/addons/extensions/details/open-in-background-with-long-press/ this] extension.
# openjdk
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export LD_LIBRARY_PATH=/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/server/
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# jre
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export LD_LIBRARY_PATH=/opt/java/jre/lib/amd64/server/
+
Alternatively, create a symlink to {{Filename|libjvm.so}}:
+
# openjdk
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cd /usr/lib/jvm/java-6-openjdk/jre/lib/amd64
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ln -s server/libjvm.so .
+
# jre
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cd /opt/java/jre/lib/amd64
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ln -s server/libjvm.so .
+
  
2. Edit the path to Java in Opera: ''Menu -> Tools -> Preferences -> Advanced -> Content -> Plugin-Options''.
+
=== Virtual On-Screen keyboard (extension) ===
#openjdk
+
 
/usr/lib/jvm/java-6-openjdk/jre/lib/amd64/
+
There is an extension which allows the use of an on-screen virtual keyboard. Further details and installation link can be found [https://addons.opera.com/en/addons/extensions/details/virtual-keyboard/ here].
#jre
+
 
/opt/java/jre/lib/amd64/
+
== Troubleshooting ==
  
 
=== Slow scrolling on NVIDIA cards ===
 
=== Slow scrolling on NVIDIA cards ===
Line 184: Line 164:
  
 
=== Horizontal mouse wheel scrolling ===
 
=== Horizontal mouse wheel scrolling ===
Check {{Codeline|Settings > Preferences > Advanced > Shortcuts > Mouse > Middle-Click Options... > Enable horizontal panning}}
+
Check ''Settings > Preferences... > Advanced > Shortcuts > Mouse > Middle-Click Options... > Enable horizontal panning''.
  
 
or
 
or
  
* Highlight {{Codeline|Settings > Preferences > Advanced > Shortcuts > Mouse > Opera Standard}}
+
* Highlight ''Settings > Preferences... > Advanced > Shortcuts > Mouse > Opera Standard''.
* Duplicate {{Codeline|Settings > Preferences > Advanced > Shortcuts > Mouse > Opera Standard}}
+
* Duplicate ''Settings > Preferences... > Advanced > Shortcuts > Mouse > Opera Standard''.
* Edit... {{Codeline|Settings > Preferences > Advanced > Shortcuts > Mouse > Copy of Opera Standard}}
+
* Edit... ''Settings > Preferences... > Advanced > Shortcuts > Mouse > Copy of Opera Standard''.
* Search the {{Codeline|Forward}} and {{Codeline|Back}} input contexts and edit the appropriate button shortcuts to {{Codeline|scroll left}} and {{Codeline|scroll right}}
+
* Search the {{ic|Forward}} and {{ic|Back}} input contexts and edit the appropriate button shortcuts to {{ic|scroll left}} and {{ic|scroll right}}.
* Rename {{Codeline|Settings > Preferences > Advanced > Shortcuts > Mouse > Copy of Opera Standard}} as desired
+
* Rename ''Settings > Preferences... > Advanced > Shortcuts > Mouse > Copy of Opera Standard'' as desired.
  
 
=== Launching an external browser ===
 
=== Launching an external browser ===
Opera does not display sites well at times. A workaround is to launch the currently displayed page in an external browser.
+
If Opera does not display a site well, a workaround is to launch the currently displayed page in an external browser.
  
{{Note|The following method appears to be deprecated in favor of the built-in {{filename|Open With}} menu accessed via the right mouse button.}}
+
{{Note|The following method appears to be deprecated in favor of the built-in {{ic|Open With}} menu accessed via the right mouse button.}}
  
* Set the following line under {{Codeline|[Site Navigation Toolbar.content]}} in {{filename|$HOME/.opera/toolbar/standard_toolbar.ini}}:
+
* Set the following line under {{ic|[Site Navigation Toolbar.content]}} in {{ic|$HOME/.opera/toolbar/standard_toolbar.ini}}:
 
  Button0, "Chromium"="Execute program, "chromium, "%u", , "Chromium""
 
  Button0, "Chromium"="Execute program, "chromium, "%u", , "Chromium""
  
Line 208: Line 188:
 
  Button0, "Chromium"="Execute program, "chromium --block-nonsandboxed-plugins --disable-java --incognito --safe-plugins --start-maximized --user-data-dir=/tmp/.chromium", "%u", , "Chromium""
 
  Button0, "Chromium"="Execute program, "chromium --block-nonsandboxed-plugins --disable-java --incognito --safe-plugins --start-maximized --user-data-dir=/tmp/.chromium", "%u", , "Chromium""
  
=== Opera crashes when starting or closing with gtk2 2.24.7+ ===
+
=== Opera crashes when starting or closing with GTK+ 2.24.7+ ===
 
+
You can work around this for now by changing the DialogToolkit option to 4:
+
  
 +
If this crash occurs, you can work around it by changing the ''DialogToolkit'' option to 4:
 
  opera:config#FileSelector|DialogToolkit
 
  opera:config#FileSelector|DialogToolkit
  
This will disable Gtk styling support and hence avoid the issue. It will probably be fixed in the next Opera release (11.60+).
+
This will disable GTK+ styling support and hence avoid the issue.
 +
 
 +
=== Unreadable input fields and address bar with dark GTK+ themes ===
 +
 
 +
When using a dark GTK  theme, one might encounter Opera address bar and Internet pages with unreadable input and text fields (e.g. Amazon can have black text on black text field background). This can happen because the site only sets either background or text color, and Opera takes the other one from the theme.
 +
 
 +
Using an installed clear theme and a command help to work around the problem:
 +
{{ic|env GTK2_RC_FILES&#61;/usr/share/themes/<light-theme-name/gtk-2.0/gtkrc opera}}
 +
 
 +
to turn it as default, use a prefered text editor and edit the file {{ic|/usr/bin/opera}}.
 +
e.g. using Opera 12.14:
 +
{{bc|
 +
sudo gedit /usr/bin/opera
 +
...
 +
#!/bin/sh
 +
export OPERA_DIR&#61;${OPERA_DIR:-/usr/share/opera}
 +
export OPERA_PERSONALDIR&#61;${OPERA_PERSONALDIR:-$HOME/.opera}
 +
exec /usr/lib/opera/opera "$@"
 +
}}
 +
 
 +
edit the file and follow the example changing to...
 +
{{bc|
 +
/usr/bin/opera
 +
...
 +
#!/bin/sh
 +
export OPERA_DIR&#61;${OPERA_DIR:-/usr/share/opera}
 +
export OPERA_PERSONALDIR&#61;${OPERA_PERSONALDIR:-$HOME/.opera}
 +
env GTK2_RC_FILES&#61;/usr/share/themes/Clearlooks/gtk-2.0/gtkrc /usr/lib/opera/opera "$@"
 +
}}
  
==Additional Resources==
+
this will make the browser use a clear theme that you set in the file {{ic|/usr/bin/opera}} that was used in the above example the theme "Clearlooks" and the problems will be solved.
  
* [http://operawiki.info/Opera Opera Browser Wiki]
+
== See Also ==
 +
* [http://operawiki.info/Opera Opera Wiki]
 
* [http://www.opera.com/support/kb/ Opera Knowledge Base]
 
* [http://www.opera.com/support/kb/ Opera Knowledge Base]
 
* [http://my.opera.com/community/forums/forum.dml?id=3 Opera For UNIX Forums]
 
* [http://my.opera.com/community/forums/forum.dml?id=3 Opera For UNIX Forums]
 +
* [http://www.opera.com/support/bugs/ Opera Bug Report]
 +
* [http://www.opera.com/browser/tips/ Opera Tips]
 +
* [http://www.opera.com/docs/ Opera Documentation]
 +
* [http://help.opera.com/Linux/12.10/en/ Opera Help]

Revision as of 16:27, 11 June 2013

Template:Article summary start Template:Article summary text Template:Article summary heading Template:Article summary wiki Template:Article summary wiki Template:Article summary wiki Template:Article summary end Opera is a free of charge web browser developed since 1994 by the Norwegian company Opera Software. It is known for being the first to bring new browsing features to the world that have become common on all web browsers, such as tabbed browsing and built-in search.

Opera continues to innovate with its integrated mail client, one-click bookmarking, tab stacks (a way of organizing your tabs) and very good support for HTML5 features.

Installation

Opera can be installed with the package opera, available in the official repositories.

Development versions can be found in the AUR:

Plugins

Opera can use Netscape-based plugins that are supported by most major browsers, like Firefox and Chromium. For details about different plugins and installation instructions see Browser Plugins. In Opera, the plugin path can be specified under Settings > Preferences... > Advanced > Content > Plug-in Options.

Adobe Flash

Template:Box

Java Support

Template:Box

Adblock

Install Adblock support using the opera-adblock-completeAUR package from the AUR.

Performance tweaks

Although Opera is quite fast on modern hardware, it can be tweaked even more. For further examples, see the Opera wiki page on performance.

Disabling features and services

One of the keys to maximizing application performance is to disable undesired features and services through the native opera:config Preferences Editor.

Some commonly disabled features are:

  • Systray Icon: uncheck Show Tray Icon under opera:config#UserPrefs.
  • BitTorrent: uncheck Enable under opera:config#BitTorrent.
  • Geolocation: uncheck Enable geolocation under opera:config#Geolocation.
  • Multimedia: unckeck desired options under opera:config#Multimedia.
  • Web Server: uncheck Enable under opera:config#Web Server.

To more easily find these options just write the respective path (without spaces) in the address bar, for example opera:config#UserPrefs|ShowTrayIcon or use the build-in search.

Disable the e-mail client

Additional command-line options are available for further control over browser features and services. To start Opera without the default internal e-mail client:

$ opera -nomail

Alternatively, if you want to permanently disable the internal e-mail client you can uncheck the Show E-mail Client option under opera:config#UserPrefs.

Disable ARGB, LIRC and mailto links

To start Opera without ARGB (32-bit) visuals, LIRC infrared control support and with mailto: links disabled:

$ opera -noargb -nolirc -nomaillinks 

Improving Flash performance

To improve Flash performance you can set the following environment variables before starting Opera, or export the entries in xinitrc, or ~/.bash_profile, or for system-wide changes, to /etc/profile:

 OPERAPLUGINWRAPPER_PRIORITY=0
 OPERA_KEEP_BLOCKED_PLUGIN=1

Another environment variable which may help resolve Flash issues:

GDK_NATIVE_WINDOWS=1

See the blog article Flash problems on Linux? for additional details.

.xinitrc example

~/.xinitrc
...
export OPERAPLUGINWRAPPER_PRIORITY=0
export OPERA_KEEP_BLOCKED_PLUGIN=0
...

Command-line example

To use the variables from the command line call Opera as:

$ OPERAPLUGINWRAPPER_PRIORITY=0 OPERA_KEEP_BLOCKED_PLUGIN=1 opera &

Profile in tmpfs

Relocate the browser profile to a tmpfs filesystem, including /tmp for improvements in application response as the entire profile is now stored in RAM. Another benefit is a reduction in disk read and write operations, of which SSDs benefit the most.

There are currently two ways of doing this:

  • using Profile-sync-daemon, that automatically detects and relocates the Opera profile to tmpfs.
  • using the -pd command-line flag to tell Opera where to store its profile data:
$ opera -pd /tmp/opera

Appearance

Themes

Although Opera is cross-platform, it can be made to integrate very well into various Linux desktop environments.

Qt
To make the menus look integrated with Qt, install your preferred Qt theme and apply it by using qtconfig.
KDE
To make Opera use KDE icons, you can install a theme such as this one.
GTK+
A nice GTK+ skin that uses the Tango icon theme can be found here.


Tab modes

Opera has native support for tab cascading and tiling mode. Appropriate buttons can be found by activating the "Main" toolbar or by dragging and dropping the buttons anywhere desired, found in Menu > Appearance > Buttons > Browser.

Fonts

Fonts can be configured under Settings > Preferences... > Advanced > Fonts.

If the ttf-ms-fontsAUR package has been installed before running Opera for the first time, Opera will use those fonts by default, regardless of what is specified by local GTK+ options, GNOME or KDE font management. To force existing installations of Opera to use the options set by your system:

  • Close all running instances of Opera.
  • Un-install the ttf-ms-fontsAUR package.
  • Move the existing profile folder: mv -i ~/.opera ~/.opera.bak
  • Run an instance of Opera and verify that your font manager settings have been applied.
  • Restore bookmarks and desired filter files from ~/.opera.bak to ~/.opera except for the operaprefs.ini file.
  • Re-install the ttf-ms-fontsAUR package, if desired.

Private tabs

To browse without leaving obvious traces of the Web sites you visit, you can use a private tab. When you close a private tab, the following data related to the tab is deleted:

  • Cache
  • Cookies
  • History
  • Logins

This is similar to the --incognito option in Chrome/Chromium and PrivateBrowsing in Firefox.

To open a private tab from the command-line use:

$ opera -newprivatetab

To ensure only private tabs are used throughout the duration of the browsing session:

  • Set Settings > Preferences... > General > Startup > Start without open tabs.
  • Clear any entries in Settings > Preferences... > General > Home page option.
  • Enable Settings > Preferences... > Advanced > Tabs > Additional tab options... > Allow windows with no tabs.

To open a new window for private browsing when already running Opera you can just press Template:Keypress or look under Menu > New Tabs and Windows > New Private Window. All subsequent opened tabs with be private as well.

Accessibility Tips

Disable text selection

It is possible to disable text selection in Opera. However, text selection through JavaScript will still work (for example in forms, etc.). To get to the setting follow the link bellow:

opera:config#System|DisableTextSelect

Grab and scroll mode

Besides setting text selection off, grab and scroll mode makes page scrolling possible with mouse dragging. It is very useful, especially when you have a touchscreen. Copy and paste the link bellow to get to the mentioned setting.

opera:config#UserPrefs|ScrollIsPan

It is also possible to change this setting on the fly by dragging and dropping the appropriate Opera button into a toolbar. The button can be found in Menu > Appearance > Buttons > Browser View.

Long pressing a link opens it in a background tab (extension)

It is possible to open up any long-clicked link in a new background tab by installing this extension.

Virtual On-Screen keyboard (extension)

There is an extension which allows the use of an on-screen virtual keyboard. Further details and installation link can be found here.

Troubleshooting

Slow scrolling on NVIDIA cards

Try running the following command:

$ nvidia-settings -a InitialPixmapPlacement=2

On some computers, http://helion.pl works extremely slow without this hack, making it a perfect site for testing.

Horizontal mouse wheel scrolling

Check Settings > Preferences... > Advanced > Shortcuts > Mouse > Middle-Click Options... > Enable horizontal panning.

or

  • Highlight Settings > Preferences... > Advanced > Shortcuts > Mouse > Opera Standard.
  • Duplicate Settings > Preferences... > Advanced > Shortcuts > Mouse > Opera Standard.
  • Edit... Settings > Preferences... > Advanced > Shortcuts > Mouse > Copy of Opera Standard.
  • Search the Forward and Back input contexts and edit the appropriate button shortcuts to scroll left and scroll right.
  • Rename Settings > Preferences... > Advanced > Shortcuts > Mouse > Copy of Opera Standard as desired.

Launching an external browser

If Opera does not display a site well, a workaround is to launch the currently displayed page in an external browser.

Note: The following method appears to be deprecated in favor of the built-in Open With menu accessed via the right mouse button.
  • Set the following line under [Site Navigation Toolbar.content] in $HOME/.opera/toolbar/standard_toolbar.ini:
Button0, "Chromium"="Execute program, "chromium, "%u", , "Chromium""
  • If Firefox is desired, or preferred:
Button0, "Firefox"="Execute program, "firefox", "%u", , "Firefox""
  • Any number of command-line options may be included in the string:
Button0, "Chromium"="Execute program, "chromium --block-nonsandboxed-plugins --disable-java --incognito --safe-plugins --start-maximized --user-data-dir=/tmp/.chromium", "%u", , "Chromium""

Opera crashes when starting or closing with GTK+ 2.24.7+

If this crash occurs, you can work around it by changing the DialogToolkit option to 4:

opera:config#FileSelector|DialogToolkit

This will disable GTK+ styling support and hence avoid the issue.

Unreadable input fields and address bar with dark GTK+ themes

When using a dark GTK theme, one might encounter Opera address bar and Internet pages with unreadable input and text fields (e.g. Amazon can have black text on black text field background). This can happen because the site only sets either background or text color, and Opera takes the other one from the theme.

Using an installed clear theme and a command help to work around the problem: env GTK2_RC_FILES=/usr/share/themes/<light-theme-name/gtk-2.0/gtkrc opera

to turn it as default, use a prefered text editor and edit the file /usr/bin/opera. e.g. using Opera 12.14:

sudo gedit /usr/bin/opera
...
#!/bin/sh
export OPERA_DIR=${OPERA_DIR:-/usr/share/opera}
export OPERA_PERSONALDIR=${OPERA_PERSONALDIR:-$HOME/.opera}
exec /usr/lib/opera/opera "$@"

edit the file and follow the example changing to...

/usr/bin/opera
...
#!/bin/sh
export OPERA_DIR=${OPERA_DIR:-/usr/share/opera}
export OPERA_PERSONALDIR=${OPERA_PERSONALDIR:-$HOME/.opera}
env GTK2_RC_FILES=/usr/share/themes/Clearlooks/gtk-2.0/gtkrc /usr/lib/opera/opera "$@"

this will make the browser use a clear theme that you set in the file /usr/bin/opera that was used in the above example the theme "Clearlooks" and the problems will be solved.

See Also