Caching with service workers

Caching with service workers, the easy way

Caching is one (just one) of the things that service workers do really well. A good caching policy enables your web app to do some pretty cool things, like serving almost instantaneous responses, smoothing over patchy network connections, and even providing offline functionality. With the right caching you can banish 404 response pages to the... Read More

Sleepwalking by Flickr user Ben Bashford

Sleepwalking into a walled garden

Here at mobiForge we’ve been broadly positive towards Google’s AMP since its launch in October 2015. It’s by no means the only way to achieve the wholesome goal of fast-loading web pages, but by providing a well-documented format to adhere to that delivers excellent performance, the web has benefitted. Google now reports that the average... Read More

68% of digital media time now spent on mobile devices

The latest report by ComScore revealed that the amount of digital media time spent using mobile devices reached 68% in the U.S. That leaves only 32% of digital media time for using desktop or laptop computers. The smartphone has now become the primary way of getting online and for many users it is the only way. While we... Read More

Shuttle on booster

Bootstrapping Progressive Web Apps with amp-install-serviceworker

So you’re interested in the super-fast load times that AMP web pages offer, and you’re titillated by the rich, native-like experiences and functionality that Progressive Web Apps (PWAs) can deliver! How do you provide a seamless and instantaneous bridge between the two? Why, with <amp-install-serviceworker> of course! In this article we take a look at... Read More

Why the performance gap is getting wider

In a recent presentation Google’s web performance engineer Ilya Grigorik talked about building fast and resilient web apps. He pointed out that today network speed, memory, and CPU performance are all highly variable no matter what device or region. Looking at the entire spectrum of smartphones available, the performance gap between low-end and high-end is wider than ever... Read More

Apple losing share, Samsung and Huawei growing in Q2 2016 (new report)

Q2 2016 wasn’t great for Apple in terms of web traffic share, according to the newly released Mobile Web Intelligence Report, published by device intelligence provider DeviceAtlas. Apple lost in 18 out of 20 countries we analysed, including the largest markets such as UK (-10%), Germany (-6%), and USA (-4%). Get the new report to... Read More

The web performance impact of third-party libraries

In many ways the ease with which one can include third-party libraries in a web page is a testament to both the design of the web and extraordinarily rich and open ecosystem around it. With a few third-party services you can transform a static HTML page into a rich interactive experience with comments, media, analytics,... Read More

Transcoders – the technology we love to hate that will never go away

Many years ago I remember a Google product manager saying that his product, the Google mobile transcoder, was the one product that everyone wished would go away... Read More

Phone UX

Mobile UX: device-targeting and conversion rate optimization

Much is made of the impact that speed has on conversion rates on the web. It’s a message that has become increasingly important in recent years, as mobile penetration rates have soared. Much less has been made of the effect of device-targeted UX on conversions. It’s well known that conversion rates are lower on smartphones... Read More

loading spinner

How to build an animated loading spinner

Loading spinners are a great way to provide user feedback during waiting periods. This can signal to a user that your website has not crashed and is processing information. The original way to create loading spinners for the web was by using animated GIFs. Animated GIFs can have weight issues. This is due to the... Read More

A page weight reference for the web – the 1 MB website

“Every line is the perfect length if you don’t measure it.” — Marty Rubin In engineering disciplines it’s very important to have fixed frames of reference to enable easy comparison of results. In the web developer community we already have many page weight measuring tools such as our own mobiReady and WebPagetest.org. So we have the weighing... Read More

Reducing page weight

When approaching the issue of web page weight, it’s useful to keep in mind the well known engineering maxim, “Simplify, and then add lightness“. This article describes some of the ways you can add lightness and reduce your web page weight... Read More

The web is Doom

In July 2015 I suggested that the average web page weight would equal that of the Doom install image in about 7 months time. In about 7 months average web page size will be same as Doom install image. Well done us! Onwards & upwards!... Read More

Taking the web offline with service workers

You’re probably already familiar with the idea of offline web apps, web apps that can continue to work in the face of intermittent network connectivity. This concept has been around for a while, and various technologies have been developed along the way to achieve offline web apps, (Google) Gears, and Appcache for example, but none of these addressed the offline challenge quite as well as service workers... Read More

Web push notifications

Web push notifications are the best thing to hit the web since the hyperlink! No kidding, this technology is going to be huge. Until recently web developers could only dream of push enabled web apps. Things have changed however, and web push notifications, the asynchronous delivery of messages to a user's device from a website, even when the website is not open in the browser, are now a reality thanks to a number of HTML5 APIs:... Read More

Touch-friendly Drag and Drop

In this article we explore some touch-friendly drag and drop implementations. In particular we'll be looking at DOM and canvas-based drag and drop approaches. We'll also build on some of the things we learned in previous HTML5 articles on mobiForge... Read More

Mobile Networks Statistics 2015

In this section you will find some of the most interesting statistics regarding the advancement of mobile network technology, along with information regarding mobile subscriptions... Read More

The HTML5 Pointer Events API: Combining touch, mouse, and pen

The Pointer Events API is an HTML5 specification that combines touch, mouse, pen and other inputs into a single unified API. It is less well supported than the Touch Events API, although support is growing, with all the major browsers working on an implementation, except for Apple's Safari. There's a colorful background to how the current state of browser support for this API came to be which we covered previously on mobiForge, but in this article we'll just look at its usage... Read More

Webviews and User-Agent strings

Much is made of the comparative times spent browsing the web vs engaging with native apps in the apps vs web debate. An often overlooked part of the discussion is that when engaged with a native app some portion of this time is spent actually on the web, via a webview. We'll get to what a webview is in a minute, but for now, what this means is that although the user is in an app, he or she is effectively browsing the web... Read More

The Oxymoron of Mobile Privacy

Introduction There could hardly be a more perfect privacy invasion machine than today's smartphone. It's with you at all times, it knows precisely where you are, it can see and hear you and it knows exactly what you are doing much of the time. If data is the pollution of the digital age then your smartphone is an overweight 1970's V8 gas guzzler with asbestos brake pads, a leaky freon-charged AC system, burning leaded fuel as it barrels down the highway: you are silently spewing out reams of potentially harmful data all day, every day... Read More

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