Opera FAQs, Tips, Tricks & Tweaks

User JavaScript is a powerful tool and it can be used for many purposes, including:

• Fixing broken scripts on Web pages. Opera uses browser.js to automatically fix incompatible Web pages, out of date scripts, and pages that inadvertently block Opera.
• Enhancing Web pages by changing or adding your own content to the page.

Installing/Uninstalling User JavaScripts

If you don't have UserJS directory, create a directory with name userjs (preferably inside profile directory) and enter path to it in Tools > Preferences... > Advanced > Content > JavaScript Options... > User JavaScript files

Path to User JavaScript files

• To install, place User JavaScript file (*.js or *.user.js) inside User JavaScript directory.
• To uninstall, remove corresponding User JavaScript file from User JavaScript directory.
• To disable, change corresponding User JavaScript file extension from *.js to *.js.x

You can also use UserJS Manager for Opera to perform above actions.

Download

Download (size: 48.3 KB) all the following User JavaScripts in a single zip file, unzip and place it inside User JavaScript directory.

1. Autosizer
2. Breadcrumb URL
3. Clean URI
4. Cooliris alike
5. Gallery crawler
6. Get feed link
7. Image thumb
8. Link alert
9. Power drag
10. Linkify URL
11. View Selection Source
12. Ultimate Search Highlighter

Useful User JavaScripts

1. Autosizer
   Autosizer will enhance image viewing in Opera by adding five different sizing modes to images: "Original", "Shrink to Fit", "Maximize", "Fit to Width" and "Fit to Height". "Shrink to Fit" is enabled by default. Simply click on the image to view in next mode or hold down Shift key while clicking to view in previous mode. Move cursor to top right corner to view the menu. See help for more information.

   
   Autosizer

2. Breadcrumb URL
   Breadcrumb URL will place link to each directory of current URL at the top left corner of the page. Useful if you browse without address bar or browse in full screen mode.

   
   Breadcrumb URL

3. Clean URI
   Clean URI will recognise links that use redirected URLs (example: http://www.google.com/url?q=http://winmerge.sourceforge.net/ ) and replace them with the direct URL.

   
   Clean URI

4. Cooliris alike
   Similar to Cooliris extension for Firefox and helps to preview links without leaving current tab. Hold Ctrl key and hover any link to open preview window in top right corner of current tab. Size of preview window can be changed to 3 heights by clicking "Restore" icon.

   
   Cooliris Alike

5. Gallery crawler
   Gallery crawler adds link to next and previous image so pictures numbered sequentially can be viewed without flipping through links, ads and poor page design.

   
   Gallery crawler

6. Get feed link
   Get feed link will place feed icons at the top left corner of the page. Useful if you browse without address bar or browse in full screen mode or if you need feed link URL.

   
   Get feed link

7. Image thumb
   Image thumb will show thumbnail in bottom left corner when you hover an image link. Hold Ctrl key to view image in original size.

   
   Image Thumb

   This UserJS breaks functioning of autosizer UserJS.

8. Link alert
   Link alert identifies links to specific file types, and displays an appropriate icon when the link is hovered.

   
   Link alert

9. Power drag
   Power drag will help you to resize textareas, select boxes, iframes, objects, images or input fields by holding Shift key and then dragging lower right corner of an item. Double click lower right corner to restore the original dimensions. You can enable the dragging corner always, or use another modifier key.

   
   Power drag

10. Linkify URL
    Linkify URL makes text http/https/ftp URLs clickable.

    
    Linkify URL

11. View Selection Source
    View Selection Source allows you to see HTML source of any part of a page, it’s very useful for web developers. If you don't know how to edit menu setup see this and add the following under [Hotclick Popup Menu].

    Item, "View selection source"="Go to page, "javascript:opera.getSelectionSource()""

    
    View Selection Source

12. Ultimate Search Highlighter
    Ultimate Search Highlighter will show search bar at the top and can show number of search results, jump to next instance of highlighted term or previous (hold Shift key and click on term in toolbar) and supports RegExp highlighting. Move cursor to top to show search bar after timeout period. Get USH button or search field from here or create a search engine with the following.

    javascript:opera.USH.run(opera.USH.check='%s','newSearch');

    
    Ultimate Search Highlighter

You can modify strings in language file to your need.

Create a copy of language file, english.lng in Opera installation directory and rename it to english-modified.lng. Then Tools → Preferences... → General → Language → Details... → Use Interface language → Choose... → [SELECT] english-modified.lng

1. Modify string -2061349988 to impress your friends with custom message in Opera startup dialog.

   -2061349988="Welcome to Opera"

   to

   -2061349988="Welcome back, Tamil!"

   
   Opera startup dialog

2. Most of us don't use some of the labels. You can modify and use them.

   1827310912="Call back"
   1665342300="Meeting"

   to

   1827310912="Work"
   1665342300="Friends"

   
   Opera labels

3. Modify string -1713924769 to have advanced search, thumbnails & sorting in opera:cache. See Thumbnails in opera cache post.

   
   Advanced search, thumbnails & sorting in opera:cache

4. Modify string -1303632626 to show plugin versions in opera:plugins. See Descriptions in opera:plugins and more post.

   
   Descriptions in opera:plugins

Note: You have to update english-modified.lng file when there is an major update to Opera. See Update Opera custom keyboard setup/menu setup/mouse setup/language/dialog files using WinMerge.

Update:
Mar 24, 2008
Jun 16, 2008

Opera has only few choice of update intervals for feed. You can change it to any required interval.

Note the path to mail directory. Close Opera, open index.ini in any text editor from mail directory and change Update Frequency= with required number of seconds.

Update Frequency=-1 for never
Update Frequency=60 for 1 minute
Update Frequency=3600 for 1 hour
Update Frequency=86400 for 1 day
Update Frequency=604800 for 1 week

Use search & replace all option in text editor if you have several feeds as it will take time to change update interval for each feed in Manage feeds....

Press keyboard shortcut, F5 or drag & drop Check for new feeds button to feeds tab and click.

Check for new feeds button