About Henri Sivonen

Photo of Henri Sivonen’s faceI am a self-employed software consultant/developer based in Helsinki, Finland. Currently, my most notable professional activity is developing code in and around the markup parsers in Firefox as a consultant for the Mozilla Corporation. I also maintain an HTML5 validator. I participate in the HTML Working Group of the W3C.

In 2007, I graduated as Master of Science (Technology) from Helsinki University of Technology, Department of Computer Science and Engineering. I wrote my master’s thesis about HTML5 validation.

Contact Info

My email address is hsivonen@iki.fi.

However, I’m near email bankruptcy, so other ways of communication are likely to work better. For questions about Firefox or Gecko, please consider using the dev-platform mailing list. For questions about HTML5 validation or the validator, please consider using the WHATWG help list instead of emailing me directly. For short things, tweeting to @hsivonen on Twitter or finding hsivonen on the #whatwg IRC channel on Freenode works better than email.

Please don’t email me about link exhange proposals or about translations whose main purpose is to get me to link to a particular site. I don’t participate in SEO schemes.

Public Key

pub   1024D/4BF78053 2008-02-26 
      Key fingerprint = F48B 82DF CB8E C84C 5418  01FC CEE1 2226 4BF7 8053 
uid                  Henri Sivonen <hsivonen@iki.fi> 
sub   2048g/1E6BCBC3 2008-02-26