Opera bookmarks file
File type: Settings, options, themes or skins file
An .adr file is a bookmarks file used by the Opera web browser.
It stores saved web page bookmarks and their folder organization for use in compatible Opera releases.
Found 5 different file type records with the same adr filename suffix.
File type category:
Settings, options, themes or skins file
Date updated: October 30, 2026
The adr file format was developed for the Opera web browser by Opera Software. Opera used these files to maintain bookmarks saved by the user.
An adr file can contain bookmarked page addresses, titles, descriptions, folders, or contacts used by Opera. Opera generated or updated the file as the user added, edited, or removed bookmarks.
The format belongs mainly to older, Presto-based Opera releases for Microsoft Windows, macOS, and Linux. Current Opera versions use a different bookmarks system, so ADR is now considered a legacy format. Transmute for Microsoft Windows also supports Opera bookmark files.
Use a compatible older version of the Opera browser to import an .adr file through its bookmark management tools. Current Opera releases may not open this legacy format directly.
On Microsoft Windows, Transmute can also read Opera bookmark files and transfer their bookmarks to supported formats or applications.
Import the file into a compatible older Opera release and export the bookmarks to a format supported by the destination browser, where available. Transmute for Microsoft Windows can also transfer ADR bookmarks to other supported bookmark formats.
The file contains browser bookmarks rather than a general-purpose document, so conversion is normally performed as a bookmark import or export.
Software apps that convert adr files:
Microsoft Windows
Software apps that import adr files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that export adr files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software apps that manage or store settings in adr files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
File type category:
Various data file
Date updated: June 20, 2018
The adr file extension is associated with some applications contact management applications, such as Smart Address for Microsoft Windows developed by X2Net.
The adr file stores addresses of contacts.
Use Smart Address to open *.adr files.
Probably can be converted to other formats.
Software applications that can open adr files:
Microsoft Windows
Software applications that can edit adr files:
Microsoft Windows
Software capable of saving adr files:
Microsoft Windows
Software apps that create adr files:
Microsoft Windows
File type category:
Various data file
Date updated: November 23, 2018
The adr file extension is used by Adress PLUS SQL, a leading professional database management system for Microsoft SQL Server from Version 7.
The adr file stores database in SQL database file format.
Use compatible tools to work with *.adr files.
Probably can be exported to other formats.
Software applications that can open adr files:
Microsoft Windows
Software applications that can edit adr files:
Microsoft Windows
Software capable of saving adr files:
Microsoft Windows
Software apps that create adr files:
Microsoft Windows
Software apps that print adr files:
Microsoft Windows
Software applications that handle other tasks involving adr files:
Microsoft Windows
File type category:
Digital video and movie file
Date updated: September 11, 2017
Record marked as obsolete and not updated for a long time.
The adr file extension is associated with an After Dark screen saver application for Apple MAC OS Classic.
The adr file stores random screen saver module. Application is not developed yet. Old file extension.
File type category:
Various data file
Date updated: July 23, 2019
The adr file extension is related to the z-Tree, a software package for developing and carrying out economic experiments, available for Microsoft Windows operating system.
The adr file stores adress data for z-Tree.
Probably not meant to be accessed by the user.
Probably cannot be converted to anything else.
Software applications that handle other tasks involving adr files:
Microsoft Windows
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