- Speed Dial
- Opera Widgets
- Opera Link
- Opera Turbo
- Opera Unite
- Content blocking
- Fraud and Malware Protection
- Display modes
- Developer tools
- Advanced Preferences
- Keyboard shortcuts
- Using the mouse
- Using voice
- Email and news
- Backing up Opera
Press Page Down and Page Up to switch slides.
What developer tools are provided by Opera?
Opera includes several tools to aid web developers:
- Opera Next - a parallel build of Opera, with cutting-edge features
- Opera Dragonfly - a complete developer toolkit that also enables remote debugging of webpages
- Error console - an error-reporting tool for webpages rendered by Opera
- Source viewer - a simple tool for examining the source code of a webpage, and making quick changes.
See also Opera Developer Tools.
What is Opera Next?
Opera Next is a parallel build of Opera, with cutting-edge features. It is useful especially to developers and testers. You can install it and run it independently of your primary version of Opera; the two do not mix. To avoid confusion, Opera and Opera Next are distinguishable by their appearance:
- Distinct application icons
- Distinctly-colored menu buttons
but it is the difference in behavior that truly distinguishes Opera Next:
- Distinct settings
- Distinct auto-update behavior
By default, Opera Next is auto-updated every time a new snapshot appears on the Opera Desktop Team blog, including all of the alphas and betas released by Opera. To slow down the release cycle, so that you only get alphas and betas, but not all the snapshots from the Opera Desktop Team, unselect the option DownloadAllSnapshots, and save the setting.
|Opera Next (with snapshots)||X||X||X||X||X||X||X|
|Opera Next (no snapshots)||X||X||X|
For stable day-to-day browsing, use Opera; to experiment with the latest and greatest features, use Opera Next.
What is Opera Dragonfly?
One of the standout features of Opera Dragonfly is remote debugging. Remote debugging makes it possible to debug webpages as seen on a mobile phone or a television from your desktop.
The complete list of features in Opera Dragonfly is too long to detail here. For more information, see the following pages:
How do I open Opera Dragonfly?
To open Opera Dragonfly, take one of the following steps:
- Right-click an element of the page, and select from the context menu.
- From the main menu, select .
- Use the keyboard shortcut Ctrl + Shift + I.
How do I close Opera Dragonfly?
To close Opera Dragonfly, take one of the following steps:
- Click the close icon ("X") on the upper right side of the Opera Dragonfly window.
- From the main menu, uncheck .
- Use the keyboard shortcut Ctrl + Shift + I.
- When the Opera Dragonfly window has focus, use the keyboard shortcut Ctrl + W, as with any other tab.
What is the error console?
The error console reports errors that Opera encounters while rendering webpages. To avoid confusion, it is necessary to distinguish between two similar features:
- In Opera: The error console
- From the Opera main menu, select .
- In Opera Dragonfly: The Errors panel
- In Opera Dragonfly, select the panel
In summary, the difference is that the Errors panel in Opera Dragonfly provides better context, but it only begins reporting errors after Opera Dragonfly is opened, while Opera's error console is the better choice when you require complete error reporting from the time that the browser is first opened.
What is the source viewer?
The source viewer is a simple tool for analyzing and modifying webpages. If you want to have a look at the source code of the current webpage, take one of the following steps:
- Right-click the page and select "Source"
- From the menu, go to
- Use the keyboard shortcut Ctrl + U
The source viewer opens in a new tab on your tab bar, and it has syntax highlighting to give you a better overview of the source. It is not just a viewer, but also an editor, and allows you to make changes to the page. It may surprise you to learn that you can make changes to the page (temporarily), even if it is not on your computer! If the page is on your computer, changes to the page are applied permanently. If not, changes to the page are applied only in cache, and reloading the page will reset it to its original state.
The source viewer includes two buttons for modifying and saving the page:
- Apply Changes - Once you have edited the source, this button applies the changes to the page
- Save - This button saves the (possibly modified) page source to a location of your choice
If you prefer to use an external program for source viewing and editing, you can specify it in the programs preferences.
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