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Niels Leenheer
Niels Leenheer

87 Followers

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Jul 24, 2017

Things I take with me when I travel to a conference

A couple of days ago Sara Soueidan launched this idea on Twitter: About three years ago I spoke at my first conference. I had never been on a stage or spoke before a large audience. I never did a talk at a meetup and even in my day job…

Public Speaking

6 min read

Things I take with me when I travel to a conference
Things I take with me when I travel to a conference
Public Speaking

6 min read


Jul 11, 2016

HTML5test has been updated!

It took a while, but today I have finally released a new version of html5test.com. This should have happened much sooner, but unfortunately some very serious health issues in my family meant I was not able to spend enough time to make that happen. …

Web Development

2 min read

Web Development

2 min read


Jul 11, 2016

The problems with feature detection

By now everybody should already know this. You should not rely on browser detection. User-agent sniffing is evil. Use feature detection instead. Sound and solid advice. At least until you start looking at some of the more unusual browsers. Earlier this summer I did extensive research on smart TV and…

Web Development

13 min read

The problems with feature detection
The problems with feature detection
Web Development

13 min read


Jul 11, 2016

Safari and IE

Two weeks ago I attended EdgeConf in London. If there is just one thing you are allowed to say about EdgeConf I would say that interesting things always happen during EdgeConf. It was just a year ago, during the previous EdgeConf in London that Yoav Weiss launched his crowdfunding campaign…

Web Development

6 min read

Safari and IE
Safari and IE
Web Development

6 min read


Nov 27, 2013

Geolocation on the Xbox

What to do when feature detection fails? — If your HTML5 app or site relies on Geolocation you’re probably familiar with the following code: if (navigator.geolocation) { // use geolocation } else { // use an alternative } The concept of feature detection is very simple. Before you use a certain feature you try to detect if the…

3 min read

Geolocation on the Xbox
Geolocation on the Xbox

3 min read


Nov 4, 2013

Starting an Open Device Lab without breaking the bank

A little over a month ago I decided to start an Open Device Lab. It’s been something I’ve been thinking about ever since it was first mentioned during PhoneGap Day in September of 2012. Over the years I already collected enough devices, so the decision wasn’t a difficult one. …

4 min read

Starting an Open Device Lab without breaking the bank
Starting an Open Device Lab without breaking the bank

4 min read


Nov 2, 2013

The Android browser

Which one do you mean? — Last week Google released Android 4.4 — codename KitKat.For web developers there is a big change — one we’ve all been waiting for. The build-in WebView has been updated to use Chrome. …

4 min read

The  Android browser
The  Android browser

4 min read


Oct 27, 2013

Activating a Palm Pre

For a couple of months I have had a Palm Pre lying around in a drawer which was stuck on the activation screen. Of course Palm is no longer in business. First it was sold to HP and then it was shut down only to have it’s assets sold to…

2 min read

Activating a Palm Pre
Activating a Palm Pre

2 min read


Oct 26, 2013

Downgrading your iPod to iOS 1.1

Say goodbye to the App Store — As owner of an Open Device Lab — the HTML5test Device Lab — I try to try to find as many different phones with as many different browsers as possible. I buy them off eBay, I visit pawnshops and I literally beg my friends and family for their old phones. …

2 min read

Downgrading your iPod to iOS 1.1
Downgrading your iPod to iOS 1.1

2 min read

Niels Leenheer

Niels Leenheer

87 Followers

Creator of HTML5test.com and the HTML5test Open Device Lab. In real life I code at Salonhub.nl

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