Preferences

Opera's preference dialog holds a great number of useful settings to change the browser behavior to suit you.

Access the preferences by going to Settings > Preferences or by pressing Ctrl+F12.

Preferences tabs

The Preferences dialog has 5 tabs (note that the Advanced tab is split into distinct sub-topics):

Tab	Allows you to change settings for ...
General	Start up tabs Home page Pop-ups Language
Forms	Passwords Personal data saved for forms
Search	Search engines and keywords
Webpages	Opera Turbo Images Page zoom Fonts
Advanced: Tabs topic	Tabs
Advanced: Browsing topic	Page loading Page icons Scrolling and scroll bar Page dimensions display Tooltips Exit actions Display full web address in address bar Spell checker
Advanced: Notifications topic	Notifications Sound clips for browser events
Advanced: Content topic	Animated images on webpages Sound in webpages JavaScript Plug-ins Styles Site preferences Content blocking
Advanced: Fonts topic	Fonts
Advanced: Downloads topic	Downloads
Advanced: Programs topic	Use other programs for certain actions Source viewer
Advanced: History topic	History
Advanced: Cookies topic	Cookies
Advanced: Security topic	Security Fraud and Malware Protection Security certificates Auto-update
Advanced: Network topic	Servers and proxies Referrer information Automatic redirection Geolocation
Advanced: Storage topic	Storage Work offline
Advanced: Toolbars topic	Customize toolbars
Advanced: Shortcuts topic	Mouse gestures Mouse setup Keyboard shortcuts