Skip navigation.

exploreopera

| Help

Sign up | Help

Opera FAQ's, Tips, Tricks & Tweaks

More about Opera browser

Useful opera:config (Opera Preferences Editor) entries

, , , ,

Opera's preferences window Tools → Preferences... 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
Opera Preferences Editor

The following are some useful opera:config entries.

EntryDescription
BitTorrent|EnableEnables file distribution using BitTorrent
ECMAScriptAvailable memory for JavaScript engine in kB
Highlighted BackgroundBackground of text that is highlighted (after a search for instance)
Highlighted Background UnfocusedBackground of text that is highlighted but has no focus
Highlighted TextColor for text that is highlighted
Highlighted Text UnfocusedColor for text that is highlighted but has no focus
Selected Background9.50Background of text that is selected
Selected Text9.50Color for text that is selected
DiskCache|SizeDisk cache size in kilobytes
Frames Show ActiveShows active frame with border
IFramesEnables inline frames
ISP|Id!Custom user agent substring
User agent with custom string 'Tamil'.
Opera/9.50 (Windows NT 5.1; U; Tamil; en)
Enable Content BlockerEnables content blocker
Enable HostName Web LookupUse Web service to search if server name lookup fails
HostName Web Lookup AddressURL to Web search to use if server name lookup fails
Password LifetimeExpiry time in minutes for master password in memory
Keep Entries DaysDays to keep entries in transfer manager
Addressbar Content Search9.50Enables address bar content search
Allow Empty WorkspacePermits the last tab to be closed
Alternative Page Cycle ModePage cycle mode to use when cycling without displaying list of pages
0 = Recently used order
1 = Page bar order
Application Icon!, WindowsFull path to alternative icon file.See How to customize Opera icon & title?
Auto DropdownAllows auto completion dropdown
opera:config#UserPrefs|BrowserJavaScriptWhether to download and use the browser.js file. Enable by setting to 1, Opera will then download the file and set to 2.
0 = Never download or use
2 = Use and check for updates weekly
1 = browser.js signature invalid. On next check for update, a new browser.js will be downloaded and the value set to 2.
Cache Directory4Full path to cache directory
Check For New OperaKeeps track of weekly check for new updates. Set to 0 to disable. See How to disable check for new version of Opera?
Color List Row ModeAlternate background colours in lists.
1 = light blue (default)
3 = white (off)
Ellipsis In CenterShorten button and tab names in the middle
Enable Edit Triple ClickUNIXHandling double clicks in text edit fields.
0=Double-click text to select all
1=Double-click to select word, triple-click to select all
Enable Mouse Flips9.51Enables mouse flips (FlipBack & FlipForward)
Enable Usage StatisticsEnables usage statistics sent to Opera. See Help us help you! for more info.
Enable config URLEnables opera:config
If you want to enable opera:config after disabling, close Opera, delete the line Enable config URL=0 in opera6.ini file.
History Navigation Mode1 = Automatic mode
2 = Compatible mode
3 = Fast mode
Read more about history navigation.
Ignore TargetDisallows documents to create new windows/pages
Max Direct History LinesMaximum numbers of typed-in URLs
Maximum Font SizeDo not allow fonts larger than value in pixels
Min Allowed GDI ResourcesWindowsAttempt to free system resources when low by value in percentage
Number Of HitsPreferred number of search results per page.
0 = Use search engine's own default
Google only. To work in other engines, you have to append &x=%i to search engine address where x is search query name for number of results. For Google, http://www.google.com/search?q=%s&num=%i
Open Dialog Under MouseUNIXLaunch dialog where mouse pointer is already located
opera:config#UserPrefs|ScaleDefault document zoom, in percent
Scroll Is Pan9.50Enables grab-and-scroll mode. Alternatively, hold down CTRL+ALT and then click & drag the page to enable on the fly scroll.
Enable Scroll Marker9.60Enables scroll marker. Scroll maker will indicate the previous position of the bottom or top of the page after a scroll action.
0 = Off
1 = Show when reaching the bottom or top of the page, and when the last scroll action scrolls less than a full page's amount
2 = Always show when scrolling
Shows Address In Caption!Displays URL rather than page title in title bar
Show Bookmarks In Addressfield Autocompletion9.60Enables bookmarks in the address field auto-completion drop-down
Speed Dial Search TypeSet to 0 to remove Speed Dial search bar
Speed Dial StateAvailable options:
0 = Folded ("Show speed dial" message)
1 = Normal view
2 = Read Only (Hides "What is Speed Dial" & "Show speed dial" buttons)
3 = Disabled
TitleMain caption on title bar. Shows standard caption by default; Page title and Opera. Add "%s" to display Opera's build number. See How to customize Opera icon & title?
Use Integrated SearchUses available multi-search field or "Find in page" field instead of dialog for "Find in page"
opera:config#UserPrefs|UserJavaScriptonHTTPSAllows User JavaScript on secure servers. Use with caution.
Visited Pages9.50Enables content search
VisitedLink|StrikeThroughStrikethrough on visited links

! = Requires Opera restart
X.YZ = Available in Opera version X.YZ
UNIX = Available only in UNIX
Windows = Available only in Windows

Updates:
2008: Jun 26, Jul 7, Aug 28, Sep 10

Shutdown System when Opera completes transfersUpdated posts

Comments

avatar
Excellent, thanks.

By Darken, # 20. May 2008, 21:26:10

avatar
thanks indeed! :up:

By pfelelep, # 21. May 2008, 14:14:18

avatar
Excellent ! you are doing a fine job.

By anamorphose, # 21. May 2008, 17:59:19

avatar
Hi Tamil
Congratulations by this blog, it has very useful information for whole opera users.

I have a blog: http://my.opera.com/el_esponjoso/blog/ in spanish, I had translated almost all your posts but this post will be very difficult for me writing it because the information is on a table and I don`t know how to put information in tables in posts of My Opera blogs,

so I ask you, (if only you want or wish), please sending me by PM the source code of this post for facilitating me the writing of this post in spanish.

Cheers.
:wink: :wink: :wink:

By el_esponjoso, # 28. May 2008, 00:07:46

avatar

Originally posted by el_esponjoso:

please sending me by PM the source code of this post for facilitating me the writing of this post in spanish.
Check your PM or right click on this page Source :wink:

By Tamil, # 28. May 2008, 03:19:18

avatar
Thank you very much by the source code, Tamil

Cheers
:wink: :wink: :wink:

By el_esponjoso, # 28. May 2008, 04:37:16

avatar
Hi Tamil, i have recently upload opera 9.27 to 9.5.
I want to synchronize my opera, but the menu File->Synchronize does not exists! do you know if it is some configuration mistake, or a bug or whatever?

By leoalassia, # 12. June 2008, 20:08:15

avatar

Originally posted by leoalassia:

I want to synchronize my opera, but the menu File->Synchronize does not exists!
See Opera FAQ #76.

By Tamil, # 12. June 2008, 21:17:49

avatar
thanks a lot!
but now when I restarted opera, all my bookmarks dissapears!!! (I entered in links.opera.com and there were, but not in my pc!)

By leoalassia, # 13. June 2008, 04:07:36

avatar
Addressbar Content Search - Enable address bar content search
Visited Pages - Enables content search

Those two could be clearer.

Addressbar Content Search - Determines whether to search the contents of the database in the addressbar.
Visited Pages - Controls whether full-page content should be indexed or not.

By rseiler, # 23. June 2008, 22:17:50

avatar
Anonymous writes:

Great tips ! :smile:

Is it possible to have the IS ID to change the string instead of just added a substring ?
It doesn't really spoof the id, it just add another string to the first...

By anonymous user, # 7. July 2008, 18:31:10

avatar
Is it possible to have the IS ID to change the string instead of just added a substring ?
Nope.

By Tamil, # 7. July 2008, 18:33:54

avatar
Kostas writes:

Hi Tamil,
Thanks for your info. It Is a very interesting blog.
I would like to ask your help, for a problem I have. Using version 9.51, I cannot keep the entered addresses. For me it is very useful, the addresses to be kept and to be reused without entered words.
Thanks in advance.
Kostas.

By anonymous user, # 23. July 2008, 06:30:27

avatar
Do you use Delete private data with Clear history of visited pages option?

By Tamil, # 23. July 2008, 07:09:56

avatar
Anonymous writes:

Thank you Tamil :-)
Everythink its ok.

By anonymous user, # 23. July 2008, 08:08:17

Write a comment

Comment
(BBcode and HTML is turned off for anonymous user comments.)

Please type this security code : 36ccfb

Smilies

October 2008
SMTWTFS
September 2008November 2008
1234
567891011
12131415161718
19202122232425
262728293031