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Front-End Performance: The Dark Side

April 25th, 2016

On April 1st, I spoke at the very first Fronteers Spring Conference. The theme of the whole conference was performance. For my presentation, I decided to try something a little bit different: instead of talking about techniques that lead to better client-side performance, I focused on security-sensitive situations in which performance can actually be a…

Progressive Web App install banners come to Opera for Android

March 31st, 2016

Since we first shipped support for web manifest and “add to home screen” in Opera 32 for Android last year, we’ve seen an increasing amount of interest in progressive web apps. Here at Opera, we’re excited about progressive web apps’ potential to bring the web on par with native apps’ capabilities, and this while avoiding…

Progressive Web Apps: the future of Apps

March 30th, 2016

On 26 March, I gave a presentation at iWeb Summit 2016 in Taipei about Progressive Web Apps. Here’s the 20 minute video. If you don’t like my voice, just see the slides. More resources Non-technical guide to HTML Manifest that I wrote for .net magazine Manifest generator New Progressive Web App helps Flipkart boost conversions…

What’s new in Chromium 49 and Opera 36

March 15th, 2016

Opera 36 (based on Chromium 49) for Mac, Windows, Linux is out! To find out what’s new for users, see our Desktop blog. Here’s what it means for web developers. ES6 default function parameter values ES6 allows formal parameters to be initialized with default values if no value (or undefined) is passed. function fn(x, y…

An introduction to the Web Bluetooth API

March 2nd, 2016

Introduction There is an explosion of electronic devices nowadays, and with many of them, it’s possible to interact with them via Bluetooth Low Energy, or BLE. However, installing a separate app for interacting with every single bluetooth gadget is impractical. What if we could communicate with them through a web browser? The Web Bluetooth API…

The New Start Page: Working With the Theme Overlay

February 15th, 2016

From Opera 36 onwards, the start page will have a brand new look. It introduces various design improvements, right from the placement of key icons, to the sizes of the speed dial tiles. As part of this, it also introduces a translucent gray overlay on themes. Previously the title text for speed dial tiles was…

Opera 35 released

February 2nd, 2016

Opera 35 (based on Chromium 48) for Mac, Windows, Linux and Android is out! To find out what’s new for users, see our Desktop and Mobile blogs. Here’s what it means for web developers. ES6: more well-known symbols Two more well-known symbols have been implemented: Symbol.isConcatSpreadable points to a boolean value that indicates if an…

Building Offline Sites with ServiceWorkers and UpUp

January 19th, 2016

We are living in an increasingly mobile world. We rely on our phones to keep us connected wherever we go, and to provide us with the information we need to get through our day. But connectivity hasn’t quite caught up with our dependence on it yet. Every day we find ourselves without a working internet…

CSSConf.asia & JSConf.asia

January 7th, 2016

In November 2015, my colleague Mathieu and I visited Singapore to attend CSSConf.asia and JSConf.asia. Here’s a summary of our presentations. Making real-time audio-visual demos At JSConf.asia, Mathieu spoke about creative coding, bringing the demoscene to the web, and crazy JavaScript optimization tricks. He then proceeded to code an audio-visual demo from scratch, live on…

Opera 34 released

December 8th, 2015

Opera 34 (based on Chromium 47) for Mac, Windows, and Linux is out! To find out what’s new for users, see our Desktop and Mobile blogs. Here’s what it means for web developers. Array.prototype.includes ES2016 (previously known as “ES7”) features a new array method named includes that determines whether an array includes a given element….

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