Log in to Dev OperaThe ins and outs of config.xml
By Karl Dubost · 25 Nov, 2010
When creating extensions or W3C Widgets, you will need to create a config.xml file, which contains the necessary information for software to identify the extension version, the author who created it, the license, etc. In this article we will build up a complete configuration document, showing step by step what all the different possible features do.
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Opera Mobile emulator for desktop
By Chris Mills · 24 Nov, 2010
This article introduces our Opera Mobile emulator for desktop, covering the new launcher, command line hooks, remote debugging and more.
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Opera extensions: options page
By Chris Mills · 22 Nov, 2010
This article details how to use a new feature of Opera extensions called the options page. This is a page in the extension containing preferences the user can set, defined in an options.html file in the root of the extension zip.
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Opera extensions developer workflow
By Andreas Bovens · 22 Nov, 2010
In this short article, we’ll look at the developer workflow to create extensions, give some tips for extension development, and point out a couple of caveats. It also features text and a video explaining developer mode.
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Introducing Web Sockets
By Bruce Lawson · 22 Nov, 2010
The beta release of Opera 11 debuts our support for Web Sockets. In this article we will explain the background to Web Sockets, show why it is a cool feature, and give you some simple usage examples to get you up to speed.
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Gentle introduction to OAuth
By Cosimo Streppone · 3 Nov, 2010
In this article, we give you a gentle but detailed introduction to OAuth, including how it work...
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Getting started with Opera extensions
By Andreas Bovens · 21 Oct, 2010
Opera has added extensions to its desktop browser, and this article is your gateway to all our ...
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Hands-on tutorial: building an Opera extension
By Daniel Davis · 21 Oct, 2010
Creating an Opera extension is not difficult and to prove it, we show you how to build an exten...
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Opera extensions: buttons, badges and popups
By David Storey · 21 Oct, 2010
This article takes you through the ins and outs of implementing buttons, badges and popups for ...
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Running your web applications offline with HTML5 AppCache
By Shwetank Dixit · 1 Jul, 2010
In this article Shwetank Dixit explains how to use the HTML5 application cache feature to make ...
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Introduction to HTML5 video
By Bruce Lawson · 11 Feb, 2010
Our Opera 10.50 pre-alpha release first introduced support for the HTML5 <video> element - vide...
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