.ADR File

File extension adr is is mainly related to popular Opera web browser and used for one of its default file types.

These adr files contain list of bookmarks or contacts used by the Opera. They are generated automatically when user adds more pages as bookmarks.

Files with adr extension can be found as saved bookmarks for Opera web browser.

How to open:

Use Opera web browser to import and load bookmarks from .adr files.

How to convert:

Previously saved bookmarks can be usually transfered to another web browser.