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Opera

Developer Resources

This page is a developer resource for anyone wanting to find more out about Opera Mini development, i.e. developing your Web sites so they work great in Opera Mini as well as other browsers, and leveraging some of Opera Mini's great unique features.

Articles

Opera Mini request headers

Opera Mini 4 uses various custom HTTP headers, in addition to the standard ones — this article tells you what they are, and what you can do with them. Read article

A developer’s look at Opera Mini 5 beta

This article will briefly outline how Opera Mini 5 works, look at the new UI, features, user agent string and Opera Mini 5’s standards support, and we’ll touch on the optimizations you can make to improve web page compatibility with Opera Mini 5 and mobile web browsers in general. Read article

Safe Media queries

With mobile and desktop browsers having such varying support for media queries, using them effectively across browsers/platforms can be difficult; here we explore a solution to this issue. Read article

How to serve the right content to mobile browsers

This article looks at the different methods available to you for serving appropriate content to mobile devices, along with caveats to watch out for. Read article

Designing and Developing mobile Web sites in the real world, part 1

This two-part article series presents two real case studies, exploring the issues faced, and how they were overcome. Other topics include standards support, identifying mobile users, and server-sniffing. Read article

Designing and Developing mobile Web sites in the real world, part 2

Part 2 of the article described above. Read article

Evolving the Internet on your phone

This article covers Opera Mini 4's standards support in greater detail, and gives some useful design tips. Read article

Differences between Opera Mini 3 and 4

This article explains the main differences between Opera Mini 4 and the previous version (3.x) in terms of standards support, etc. Read article

Show in Opera Mini bookmarklet

You can add the following JavaScript to your browser toolbar as a bookmarklet, a handy link that will display your currently open Web page in the Opera Mini simulator. Just bookmark this link:

Show in Opera Mini