Hello again

Let’s do a blog post!

Yes, the first one in 8 years. Why? I’mma talk about it.

Why stop in the first place?

I suppose a number of reasons… Having moved across the country to join a new company in 2011 I wanted to extra cautious about what I posted about publicly. Initially I thought I’d be part of the team working things like CSS Regions, but instead our project was more private and wound up not going anywhere. Some years later I did join the Web Platform team which was lot more public about its work but by then perhaps it felt too late to post on my personal blog?

Furthermore, my side project time was mostly spent on caniuse so fewer subjects to discuss. And finally of course the rise of social media platforms Facebook and Twitter resulted in other avenues of communication and the popularity of blogs just started to wane overall. So I think that’s what happened.

Why start again?

For starters as a web developer it feels wrong to just leave a blog untouched for so long. At the very least there should be some kind of closure, right? I don’t think that’s what this is, just think there should be an update at least.

I’m also just disappointed with the state of the web these days. As perfectly demonstrated by this site, a lot of websites are just unpleasant and painful to use. I really don’t know what I can do about it, but maybe posting about sites that don’t suck is better than nothing?

As for sharing stuff… I’ve mostly been using Twitter which I find great for keeping up with the news, the web industry as well as interesting strangers. But it’s not great for long form content and one has little control over it. Facebook is where most family and old friends are, but Facebook is also a horrible company so I try to avoid it.

Ultimately the humble blog managed on one’s own website has a lot going for it, so I’m going to give it some love. We’ll see how long that lasts.

Web development

Preview the new features

I’m happy to announce a number of new features coming to caniuse, with the new site now available for preview at The features are built upon a complete rewrite of the site’s front end code, which will hopefully also lead to more improvements in the future.

New features

Importing geographical usage data

Until now the site had only been using the “Worldwide” dataset from StatCounter which was useful but could be quite different from the various geographic regions that many site owners are interested in targeting. You can now pick any of StatCounter’s regions to see the support value percentage based on that region.

The first time you visit the site it will attempt to detect your current location to suggest the data to import. If you’d like to pick a different (or additional) location follow these steps:
region picker

  1. Click on “Show options” to show the option sidebar
  2. Under “Geographic usage data” start typing the region’s name
  3. Select the region and click “Import data”

The data is always from the previous month, and will be automatically loaded when revisiting the site. On a new month, regional data is automatically updated.

 New support “tables”

The support tables have been cleaned up and modified as following:

  • A “Usage relative” mode – displays each browser version sized relative to the selected usage data
  • Detailed tooltips when hovering over browser versions
  • Support for version-specific notes – easily see which notes refer to which browser versions (see flexbox for example)
  • Additional “unprefixed” usage information where applicable (% of users supporting properties etc. without prefix)

Example of the new usage relative view

Miscellaneous improvements

Smaller improvements include:

  • Import details from Google Analytics usage imports
  • Some options like browser selection are stored and restored when revisiting the site
  • Streamlined options panel
  • Improved browser comparison with subsections for common/different usage.

What about the new design?

Quite some time ago it was announced that the site would implement a new design in cooperation with Lennart Schoors. While some parts of this design have been already incorporated, the overall design is not there yet. This was due to some architectural inconsistencies between the design and the new features where I opted to get out the new features first.

The good news is that the new design is next on my list, once the new features have been put on the main site. My goal is it to have it implemented before the end of the year.


I hope you find the new features useful in your web development/design work. If something on the beta site’s not working right please file an issue (use “beta site” tag) so I can fix it before pushing the new features to the main site. Thanks!

Geeky Personal


Adobe logo
I’m delighted to announce that I will be working for Adobe, starting this June. Details to follow at some later point. 🙂

Web development

Big “When Can I Use” update!

UPDATE: The Android 2.2 browser has now also been included.

I’m happy to announce a number of new changes to, providing all sorts of new information for your feature support needs:

Mobile browser information

Preview of mobile browser columnsThe most popular WCIU request has been to add tables for support for mobile web browsers. This is now available together with the desktop browsers, including for now: iOS (iPhone/iPad/iPod touch) browsers, Opera Mini, Opera Mobile and the Android browser. These are known to be the most popular mobile browsers, so I thought I’d start with them. You can view each type as a set by using the URL or In the future more mobile browsers are likely to be added, with the grade A browsers on this chart having priority.

Browser usage statistics

Preview of global usage statisticsIf you’d like to know just what percentage of users can use a given feature, you can now get a rough idea from the “Global user stats” displayed in the upper-right hand corner of a feature. Of course your audience may be very different, so this should just be used as a guide. Mobile browser statistics are not currently included, but hopefully I can find some way to include them in the future.

Single feature pages

Each feature has its own non-hash URL now, (i.e. which is useful when sharing a feature table with others or looking up a feature quickly. These pages are designed to load quickly, with a link back to their interactive versions.

Search from address field

This previously existing feature has now been improved: Type in your query directly after and you will be directed either to the related feature page or (if multiple results are found) to the search results page. For example, will redirect you to the page.

Feature index

Preview of feature indexA full overview of all features mentioned on WCIU listed by category is now available by clicking on the big “Index” tab. The same overview is available on each single feature page too.

Feedback buttons

Each feature now includes a “Feedback” button, which you can use to quickly send me a correction/link suggestion, etc.

More browser features

Five new features have been added:

Also, thanks to the site’s restructuring, I plan on adding many more features in the future.

Bug fixes and minor improvements

I have fixed a number of bugs related to the working of the option checkboxes and URL hash, so things should work more as you’d expect them to. A number of links/notes/descriptions have also been updated. I’ve also added a “Three versions back” era (hidden by default) in case you need to go back even further in time.

So that’s it! The remaining request I’ve had is for a public API, which is something I’m still looking into but should be in my next big update.

Enjoy the new features, and let me know if you run into any bugs or mistakes.