Dev.Opera

Log in

  • Web
  • Add-ons
  • Mobile
  • TV
  • Labs
  • Running your web applications offline with HTML5 AppCache

    By Shwetank Dixit · Thursday, July 1, 2010 22

    In this article Shwetank Dixit explains how to use the HTML5 application cache feature to make your web apps run offline. Read more…

  • How to use the W3C Geolocation API

    By Shwetank Dixit · Wednesday, June 16, 2010 164

    In this article, Opera Web Evangelist Shwetank gives you a guide to the W3C Geolocation API, which is newly-supported in our Opera 10.60 beta release. Find out how to add location awareness to your Web apps for a lot of interesting possibilities! Read more…

  • Showing and hiding content with pure CSS3

    By Corey Mwamba · Wednesday, June 9, 2010 5

    Creating expanding and collapsing (or show and hide) content on websites used to be the domain of JavaScript, but in modern times we can recreate such functionality without JavaScript, using a combination of :focus, and CSS3 opacity and transitions. In this article, Corey Mwamba shows you how. Read more…

  • Opera supports the WebM video format

    By Chris Mills · Wednesday, May 19, 2010 16

    Today is a very significant day for the Web. WebM, a new, high-quality, free, and open video format is now available, and Opera has released Labs builds that support this format in HTML5 . In this article, we look at some examples, how this came about, why it is such a good thing, and what the technical details look like. Read more…

  • Welcome, WebM <video>!

    By Håkon Wium Lie · Wednesday, May 19, 2010 2

    The big news today is that WebM will join the list of open and freely usable Web formats, and video will finally become a first-class citizen of the Web. We’re proud to add support for WebM into a Labs build. Read more…

  • We’re back! Opera Mobile 10 on Maemo

    By Fredrik Öhrn · Tuesday, May 11, 2010 7

    We’re proud to present the first preview build of Opera Mobile 10 for Nokia N900 and N800/N810. Read more…

  • Icon Creator tutorial

    By Opera Software · Wednesday, May 5, 2010 1

    The Icon Creator is a new Opera Widget that makes it really easy to create a professional-looking icon from any motif or other graphic you may want to use. This article provides a simple tutorial showing how to use its different functions. Read more…

  • Beautiful UI styling with CSS3 text-shadow, box-shadow, and border-radius

    By Henrik Helmers · Tuesday, April 27, 2010 5

    CSS3 shadows and rounded corners are easy to understand at a basic level, but what if you want to start using them in more advanced UI styling, such as textured buttons and semi-transparent glass effects? In this article Opera designer Jan Henrik Helmers hows you how to create these UI features and more, using CSS3 features, and no images whatsoever. Read more…

  • 1
  • …
  • 40
  • 41
  • 42
  • …
  • 85

Tools

  • Opera Developer builds
  • Web development extensions
  • Opera Mini Simulator
  • Opera TV Emulator
  • Opera Mobile Classic Emulator

Resources

  • Opera Developer News
  • Can I use... tables for Opera
  • Web Education Community Group Wiki
  • Opera questions on StackOverflow
  • GitHub repositories
  • Shiny Demos

Contribute

  • Submit articles

News and announcements

  • Opera for Android 20 beta released
  • Opera Next 20.0.1387.24 for the Cognoscenti
  • A small update to Opera 19
  • Opera Developer update &#8211; 20.0.1387.16
  • Opera 19 auto update is back again.

Twitter logo: contained in link to Opera Developer Relations team Twitter stream Opera Developer Network blog logo: contained in link to blog Calendar icon: contained in link to list of events being attended by the Opera Developer Relations team

© 2014 Opera Software ASA.

  • Help/FAQ
  • Terms of service
  • Privacy