From Opera 9.50, cache files no longer use file extensions. The following will add advanced search, thumbnails and sorting to opera:cache.

1. Copy language file (*.lng) from Opera installation directory to your profile (Help → About Opera → Paths → Opera Directory).
2. Open language file in any text editor and replace string for -1713924769 with modified one.
3. Go to Preferences → General → Language → Details… → Use Interface language → Choose… and select modified language file.
4. Restart Opera.
5. Type opera:cache in address field to see extra features.

Advanced search, thumbnails & sorting in opera:cache

Note: You have to update modified language file, whenever you install major version of Opera.

[via A.Ruzanov]

You can paste the contents of clipboard to any text area in Opera with middle mouse button using this mouse gesture.

Create a new mouse gesture in Advanced → Edit Widget section with Button3 as input context & shortcut and Paste mouse selection | Paste as action.

Now you can paste clipboard contents to any text area in Opera by clicking middle mouse button.

Note: Paste mouse selection will work only in Linux.

You can auto-hide any toolbar in Opera after enabling it via keyboard shortcut or mouse gesture or button.

Keyboard shortcut / Mouse gesture

Create new keyboard shortcuts or mouse gestures in Application section with following action codes.

To modify auto-hide time, change Delay, X value (time in milliseconds) in above code.

To hide/show a toolbar without auto-hide use the following.

Button

You can add buttons to any toolbar (main bar, tab bar, address bar, navigation bar, view bar, status bar, start bar or panels) except menu bar & personal bar simply by dragging button links to required place. Clicking on the button links without dragging will add the buttons to Tools → Appearance → Buttons → My Buttons for later use.

When you try to add a button, a dialog box with following message will popup. Press OK to add button.

Adding new button with action

[Action]

Do you want to proceed?

To remove a button, right-click on it and select Remove From Toolbar.

Get buttons for above from here as Opera button links won’t work in Opera Watch (WordPress).

Opera has 9 Speed Dials by default but you can add more in Opera 9.50.

1. Note the path to Opera directory (Help → About Opera).
2. Close Opera.
3. Open speeddial.ini file in any text editor from Opera directory.
4. Add the following lines and adjust number of rows & columns to your requirement. If you use widescreen monitor, increase number of columns.

   [Size]
Rows=4
Columns=4

5. Start Opera.

Click on image to view fullsize

Keyboard shortcuts CTRL+1 to CTRL+9 will open Speed Dials 1-9 respectively.

To open extra Speed Dials using keyboard shortcut, create new keyboard shortcuts in Application section with action Go to speed dial, X where X is Speed Dial number.

Set opera:config#UserPrefs|SpeedDialSearchType to 0 to remove Speed Dial search box.

[via RemcoLanting]

Opera’s preferences window (keyboard shortcut: CTRL+F12) provides access to preferences the are most commonly adjusted. There are many more options that are available for you to adjust, however, they are hidden and can be found in the built-in preferences editor.

To access the hidden preferences editor, type opera:config into the address bar and press enter. To learn more about each opera:config entry, click the help link at top right side in the preferences editor.

Opera Preferences Editor

The following are some useful opera:config entries.

^# = Copy & paste in address bar or select entry, right click & click Go to URL
^! = Requires Opera restart
^* = Available in Opera 9.50

I recently made a video showing off WinGogi (the Windows version of the preview build available at Opera Labs) scoring 100/100 on the Acid3 test and passing the Acid2 test. In that video I also mentioned that it was a lot more efficient on Google Maps. I said that current weekly and stable builds of Opera have a hard time with Google Maps. While I was testing out some stuff in a virtual machine running Vista x64 (the same version I made the video on, and the same version I normally browse on) I found that this was not entirely true. The latest weekly build at that time (Windows build 9864) of Opera 9.5 runs Google Maps much better than I thought.

With Opera, the most common cause of performance and stability issues (not only like the one I ran into, but crashing issues as well) are related to a single file. This file is opera6.ini and it is where Opera stores all of your settings. The issue is believed to be caused over time as you update from version to version of Opera (due to this reason, weekly build users like me tend to experience this issue much more frequently), or when system crashes and such cause corruption to the opera6.ini file. When there are discrepancies in this file, it tends to cause problems in Opera ranging from lowered performance and hang-ups to crashing.

Fortunately for those of us suffering from opera6.ini related issues, the fix is as simple as deleting/renaming the opera6.ini file. The down side is that you will have to reconfigure Opera as if it were brand-new, as Opera will create a new opera6.ini file with the default set of preferences the next time you launch it (note that just a re-install of Opera cannot fix this issue). The plus side is that you can simply rename opera6.ini to opera6.ini.bak (or any other name you want) so that your old opera6.ini file is still there in case generating a new opera6.ini didn’t fix your problems.

So, how do you go about deleting opera6.ini? It’s simple. Just follow these instruction:

• Open “About Opera” (click help, then click on “About Opera”).
• Find the path to the preferences file.
• Copy and paste that path into the address bar in “My Computer”.
• Make sure that Opera is no longer running at this point, otherwise this will not work.
• Find the file named opera6.ini (or a file called opera6 that Windows claims is a “Configuration Settings” file).
• Rename that file to something like opera6.ini.bak or backup_opera6 so that you keep a backup copy of it.
• Close “My Computer”, and open Opera.
• Now you just need to set Opera back up the way you like it.

To make it easier to assimilate these instructions, I’ve also made a short video detailing how this works. The video can also be downloaded in WMV (7.7M) and XviD (9.5M) formats. Both are 800×600 pixels in size, and were recorded in Windows XP Professional Service Pack 2 running in VMWare.

You can remove all typed-in addresses using delete private data (Tools → Delete Private Data… → Clear history of typed-in addresses).

To remove a (mis)typed-in address,

1. Note the path to Opera directory (Help → About Opera).
2. Close Opera.
3. Open opera.dir in any text editor from Opera directory.
4. Remove the line containing unwanted entry & save. Never delete first line as it contains number of typed-in addresses. Opera will update first line automatically.

To remove an entry, delete that line in opera.dir file

If you also want to remove site from drop down list of suggestions, see How to remove specific webpages from your browsing history?

Here’s a great tip for those of you who want to use StumbleUpon in the Opera browser.

Generally in Firefox and Internet Explorer, you need to install the StumbleUpon toolbar. However there’s no official support for Opera and Safari at this point.

Here’s how to use StumbleUpon in Opera without installing any toolbars.

Visit (and bookmark) this URL: http://www.stumbleupon.com/demo/#url=http://operawatch.com/

The above URL will show a virtual toolbar above the webpage. Click on the ‘Stumble’ button to start discovering cool and interesting websites.

(StumbleUpon in the Opera browser)

(via Labnol)

The Opera Mini team just added a new screen for power-user settings (via a server upgrade) in Opera Mini.

In the address bar, type: opera:config

(Opera Mini power-user settings)

Opera offers quick access for foreign language translation with just a couple clicks.

Here’s how to translate:

1. Select the text you wish to translate
2. Right click to open the context menu
3. Click on ‘Translate’
4. Select the language to translate

(Translate text in the Opera browser)

Problem: In some cases Opera Mini re-installs each time you startup the browser, even though it has already been installed. The screen shows ‘Installing’ and then prompts you to accept the end-user license agreement (EULA).

Solution: Use Menu > Exit to close Opera Mini 4. Other methods for closing Opera Mini can interrupt important Java processes and cause “installing” on next startup.

I’ve been having this issue a lot with Opera Mini on my Samsung M610 phone. Over the past few months I’ve had lots of conversations with the Opera Mini team to try to solve this issue. They’re working on fixing this problem. In the meantime, I suggest you close Opera Mini using the menu option.

The issue is likely caused by the manner in which the phone handles its RMS. The phone uses RMS to store the application’s settings and other information.

Google Maps and other Java apps
I’ve noticed this issue with other Java applications, such as Google Maps, where it prompts you to accept the EULA each time you load the application. Closing the application via Menu > Exit solves the problem.

(via a tip in the Opera Forums)

By default Opera blocks unwanted pop-ups. There may, however, be times when you do want to see a particular pop-up window/tab/ad.

Q: How do I open a blocked pop-up window?

A: Click on the ‘Trash bin’ icon (located on the top right corner). All of the blocked popups should be listed under the ‘Blocked Pop-ups From’ option. To open the pop-up of your choice, simply click on its title.

(Unblock pop-up ads in Opera)

If you’ve set a homepage in Opera, you could quickly get to it by pressing the CTRL key together with the Spacebar.

By default, the Opera browser will block all unwanted popup ads/tabs/windows.

Whenever Opera blocks a pop-up, a small notification is shown (usually on the top right corner of the browser) telling you that the popup has been blocked. You can click on the notification to open the blocked popup.

(Blocked pop-up notification)

How to disable these popup notifications?
In the menu bar, go to Tools > Preferences > Advanced > Notifications… Uncheck the following option: “Show notifications for blocked pop-ups”.

(Stop showing notifications for blocked popups in Opera)

Did you know that you could talk to the Opera browser? Well, you can!

Opera has a cool feature where it allows you to say commands and tell Opera to do things. For example, if you say ‘Opera Go Back’, Opera will go back to the previous page in your browsing history. Here is the complete list of commands.

Watch the video below from PC Mechanic that explains Opera Voice. It’s pretty cool.

Note: For those of you who can’t play the video below, try watching it here.

Here’s a quick way to go up one directory level in the URL of a Webpage. Simply press the CTRL+Backspace - this will move you up one directory on the Webpage.

For example: