.ADR File Overview

File Extension:	ADR
File Type Description:	Opera Bookmarks File
File Type Developer:	Opera Software
Primary Associated Software:	Opera
Primary Software Developer:	Opera Software

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ADR

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Home File Types Web Files ADR

What is File Extension ADR?

ADR files are a type of Opera Bookmarks File developed for Opera by Opera Software. Our internal web tracking data indicates that Windows 10 operating system users, and those living in China, are the most likely to use Opera Bookmarks File files. Google Chrome is the predominant internet browser used by this population.

Associated Developers and Software

Opera by Opera Software

Top ADR User Languages

Top ADR File User Browsers

Desktop Friendly?

Mobile Friendly?

Top User Operating Systems


Windows 10	Windows 11	Windows 6	Windows 8.1

Associated Operating Systems

	Windows
	Mac
	iOS
	Android
	Linux

Other File Types Related to ADR Files

Extension	File Type Developer	File Category	File Type Description
.JHTML	Oracle Corporation	Web Files	Java HTML Web Page
.HTM	Various Developers	Web Files	Hypertext Markup Language File
.JSPA	Xinox Software	Web Files	Java Servlet Alias
.OBML	Opera Software	Web Files	Opera Mini Saved Web Page
.DO	Unknown Developer	Web Files	Java Servlet
.RHTML	Yukihiro “Matz” Matsumoto	Web Files	Ruby HTML Web Page
.SPOP	Opera Software	Data Files	InterTrust SPOP File
.ASHX	Microsoft Corporation	Web Files	ASP.NET Web Handler File
.PHP2	Open Source	Web Files	PHP 2 Web Page
.QF	Nokia	Settings Files	Nokia (Ovi) Maps Version Data