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add an example, a script, a trick and tips
Opera - Print web page to PDF without the title and footer?
You can remove the header and footer by going to
opera:config and disabling the
Header preference. Be sure to save the
Note: You could also clear the
Print Left Header String,
Right Header String,
Print Left Footer String
Print Right Footer String fields.
Has Opera 10 beta dropped support for the background-size CSS rule?
What tools exist to override an IP from a DNS lookup per browser?
A method that works with all browsers is to set up a proxy
server, such as Privoxy or Squid, that has the ability to rewrite
requests. When a HTTP proxy server is used, the full URL is sent
to the proxy without performing any name resolution.
Opera 11 (on Linux with KDE): "Open in new tab" from Context Menu doesn't work
You may have another dialogue open for a different tab, such as
the prompt to bookmark a page, which will prevent other GUI
options from functioning correctly. The easy way to clear up this
particular problem is to just exit Opera, then come back (it will
restore all your tabs, and Back/Forward history so you won't lose
your position in your current workflow).
Alternatively, to open a link in a new tab, hold the Shift key
(either one) while clicking once (with the left mouse button
[since you seem to be using the default "right-handed mouse
I use this feature frequently, and I find that holding down the
Shift key to start a link in a new tab is a wonderful
What do I have to do to hide the title bar in Opera?
Right-click on the tab bar (yes, I know you want to change the
title bar, bear with me) and de-select the option "Show
Border". (Maximise the window to see the full effect.) Also see
this thread on the Opera forums.
Alternatively, depending on your flavour of Linux (not sure about
GTK), your OS may allow you to achieve the same effect by using
specific window decoration settings, or you could
use Compiz to hide the window decorations altogether (the
result may not be to everyone's taste).
Linux Mplayer Instead of flash any distro/browser
Your question is not terribly clear, but if you want to use
Mplayer as a plugin for your browser, you can use mplayerplugin,
http://mplayerplug-in.sourceforge.net/ . It lets
you use mplayer as a plugin inside Firefox.
Could it be a graphics issue on the machine? If X is using a
completely accelerated driver because the installer didn't know
the right one to select (or simply doesn't have one) for your
graphics hardware you might see this sort of behaviour as the
browser reflows the page during updates.
Though if this is the case I would expect every application to
show visible signs of slow performance, not just browsers (though
browsers tend to update their display repeatedly while content it
loading/updated so they are likely more obviously affected than
It is worth checking to see what driver your X setup is using and
(if it isn't using the right one already) trying to install a
better one. This might involve installing a proprietary (binary
How to disable font Arial in Opera?
I think you should be able to use Opera's config options:
to define a style rule. While my approach isn't a negative
statement it should achieve the same result:
src: url(path/to/replacement/font.ttf); /* or local(path/to/replacement/font.ttf); */
I'm not sure if there's a way to force Opera to use your
user.css file for Arial fonts, or not, but it might
work. And it's the best I could think of at the time...good luck!
Edited following comments:
This seems reasonable but it did not work. May be it has to be
used with some element definitions. - temujin.ya.ru
and the response, from ChrisW:
@temujin.ya.ru See whether it works when used with a stylesheet
that specifies Arial explicitly. If so then the problem is with
stylesheets that specify Arial implicitly, e.g. by specifying
"sans-serif". Also I wonder whether there are other/similar
font names e.g. "Arial Cyr", "Arial Cyrillic", etc.
If the problem is related to implied fonts (
sans-serif; for example) then the above could be added to,
with the following:
src: url(path/to/replacement/font.ttf); /* or local(path/to/replacement/font.ttf); */
But this approach would become unwieldy very, very quickly.
An alternative, and possibly better, approach is:
[in Opera] Tools > Preferences > Advanced > Content >
Style Options > Presentation Modes
And configure the options available there, which allows you to
specify whether pages render under 'author' (author of the
web-site) or 'user' (your own) css modes. You can limit this to
'page fonts and colours,' or 'My fonts and colours.'
Though I'm not sure how good, or bad, this alternative might be.
How to open new Instances of Opera (New Window/ Speed Dial) in Linux- Workspaces?
You left unclear, which window manager/desktop environment you
Assuming you use Gnome, you can do the following:
grep -r opera *, which should output something
about/%gconf.xml: <stringvalue>opera -newpage %s</stringvalue>
http/%gconf.xml: <stringvalue>opera -newpage %s</stringvalue>
https/%gconf.xml: <stringvalue>opera -newpage %s</stringvalue>
unknown/%gconf.xml: <stringvalue>opera -newpage %s</stringvalue>
Open these files with your favourite editor and change all those
-newpage (or whatever value your files show as
-newwindow. Keep in mind, that now
every link you open from
outside Opera will open in a
new window/instance, only links opened from
within Opera will open in the
I guess this is not quite the answer you were looking for, but as
far as I know, there is no (convenient) way you can probe for an
already running instance of a window on the same desktop to
differentiate this behaviour.
How to disable Opera alt button?
How you get there:
CTRL+F12 (or menu -> Settings
Click Advanced tab, Shortcuts at the bottom (step 1 on pic);
Perform step 2 (click on edit on the shown part);
Use the hit at the bottom..
(Okay forgot step 5: select it; step 6: click delete.)
Opera is a
graphical Web browser available on several platforms. The
desktop version described in this manual page runs on
GNU/Linux and FreeBSD. Versions for Windows and MacOS X are
If you find a bug in Opera please report it to
command line options
These support both double and single dash as prefix. Several
other options are also supported, notably including many generic
X Toolkit options; see --help output for details.
Use path as personal configuration directory (ignore
Send command to an existing Opera window. See "REMOTE
COMMANDS" section below.
Start Opera without internal e-mail client (also disables chat
Do not open a saved window session or homepage.
Suppress X shape-extension for widgets, to make their full
underlying rectangle visible (useful for debug).
Do not open any document windows.
Display version information and exit.
Print option summary and exit.
Private data for each user is stored in a personal configuration
directory. By default this is ~/.opera but you can
override this by setting OPERA_PERSONALDIR (for example in
your login shell’s standard configuration file) to a
location of your choosing; or by passing a chosen directory with
the --personaldir command-line option. For the most part
it is best to access the files in this directory via the
preference and appearance dialogs - accessed either from the
Tools menu of the Opera user interface or via a keyboard
shortcut: type Alt+P for the main preferences
dialog, Shift+F12 for the appearance dialog or
simply F12 for a menu of the more commonly set basic
preferences from each. (You can control Opera entirely from the
keyboard, including any of these dialogs; to dismiss a dialog,
use the Esc key.)
Most files in the directory have names which express their
functions. Many of them have backups saved in *.bak files.
The file operaprefs.ini in this directory records most
user preferences. Entries in it can override the locations of
some of the other files; this description relates each to its
default location. A fuller account of the operaprefs.ini
file may be found at
Bookmarks are recorded in bookmarks.adr, and global
browsing history is recorded in global.dat; browsing
histories for individual tabs are a part of the session state
saved as files in sessions. In this sub-directory, the
state of the current session is saved in autosave.win;
other sessions may be saved (see the Sessions sub-menu of the
main File menu) to other files in this directory. It is prudent
to save such a named session before starting up Opera with a
radically new version (especially if it is a beta release).
Override default personal configuration directory
Use owner-only permissions for all files created (as if by
umask 077) if set to YES, TRUE (case insensitively
matched) or 1. Otherwise honour umask setting in the
Override the operating system name. If set, Opera will use this
value as part of the User Agent string instead of trying to
detect the operating system.
files and directories
Installation directory for Opera binaries, with a separate
plugins sub-directory for plugins.
Opera shared resource directory. Contains assorted data files.
Default settings for Opera configurations; may be overridden by
the operaprefs.ini in a user’s personal
System settings for Opera configurations; cannot be overridden by
The default personal configuration directory.
Since commands include parentheses, which have special meaning to
the shell, it is important to enclose remote commands in quotes,
like --remote ’openURL()’ so as to prevent the
shell from interpreting the parentheses. In the following,
destination is one of new-window for a new window,
new-page for a new page (or tab) or background-page
for a new background page (opened in an inactive new tab).
Open "Go to" dialog box prompting for input.
Open URL in active window.
open URL in destination window, tab or background.
Open file selector in destination window or page
(background not supported).
Open Opera mail client list view in a new window.
Open Opera mail composer in a new window.
Add URL to bookmark list.
Raises the Opera window.
Lowers the Opera window.
opera --help for a fuller list of
for an on-line account of the supported options.
for more general on-line help (also available via the Help
menu on Opera’s main toolbar).
was written by Opera Software ASA
http://www.opera.com/. Please refer to
/usr/share/doc/opera/copyright for more