This guide, or rather a documentation, is my attempt to help make sense of those files that you may find in your Opera profile or preferences folder.

The information that I have gathered and provided below has no connection to Opera Software ASA and is the work of many bored hours spent online by yours truly.

To find out about a file or a folder simply click on it to open a page with more details.

…/opera/

• cache
• dictionaries
• icons
• images
• mail
• opcache
• sessions
• skin
• styles
• temporary_downloads
• thumbnails
• toolbar
• vps
• widgets
• autoupdate_response.xml
• bookmarks.adr
• browser.js
• cookies4.dat
• download.dat
• fontswitch.ini
• global_history.dat
• link_queue_myopera.dat
• link_queue_out_myopera.dat
• lock
• notes.adr
• opcacrt6.dat
• opcert6.dat
• opera6.ini
• operaprefs.ini
• opicacrt6.dat
• oprand.dat
• opssl6.dat
• opthumb.dat
• optrb.dat
• optrust.dat
• opuntrust.dat
• override_downloaded.ini
• pluginpath.ini
• search.ini
• speeddial.ini
• tasks.xml
• typed_history.xml
• upgrade.log
• urlfilter.ini
• vlink4.dat
• wand.dat
• widgets.adr

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