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nlDeze gebruiker heeft het Nederlands als moedertaal.
en-3This user can contribute with an advanced level of the English language.
de-1Dieser Benutzer hat grundlegende Deutschkenntnisse.
fr-1Cet utilisateur peut contribuer avec un niveau élémentaire de français.
Admin mop.PNGThis user is an administrator on the English Wikipedia. (verify)
Wiki-tech-logo.svgThis user develops
user scripts;
MediaWiki logo without tagline.svgThis user is a MediaWiki developer.
Wikimedia Phabricator logo.svg@This user is active on PHABRICATOR.
Ten Year Society userbox.svgThis user has been editing Wikipedia for more than ten years.
Noia 64 apps karm.svg This user has been on Wikipedia for 15 years, 1 month and 26 days.
I'm an awesome Wikipedian!
This user has been identified as an Awesome Wikipedian and was awarded his own day.

4 Rules for discourse[edit]

"My friends on Twitter didn't abandon their beliefs or their principles — only their scorn. They channeled their infinitely justifiable offense and came to me with pointed questions tempered with kindness and humor. They approached me as a human being, and that was more transformative than two full decades of outrage, disdain and violence. I know that some might not have the time or the energy or the patience for extensive engagement, but as difficult as it can be, reaching out to someone we disagree with is an option that is available to all of us." - Megan Phelps-Roper, TED talk

About me[edit]

My name is Derk-Jan Hartman. I used to edit, am an administrator on English Wikipedia and former administrator on Commons. I mostly deal with tech stuff. I'm a volunteer contributor to the MediaWiki software that runs Wikipedia, dealing with things like accessibility, scripting, CSS, small bugs, mobile, video and so much more.. A long time ago I was one of the volunteer developers of VLC media player.

Me on other wiki's[edit]

Wiki interests[edit]

Most of my time is spent answering questions of editors on the technical Village Pump, maintaining the site specific Javascript and CSS, working on templates and doing administrative work with regard to images (moving, deleting etc). I also do a lot of work with various User scripts and Gadgets. My article interests are with topics regarding space and the Netherlands. I'm an occasional author for The Signpost.

Articles that I significantly edited and brought to GA/FA


I worked on the Wikimedia Mobile project. My brainstorm list.

My Javascript projects[edit]

These are some of the scripts that I have created or that I have significantly contributed to.


The Signpost
31 March 2019
RfA candidate S O N S% Ending (UTC) Time left Dups? Report
RfB candidate S O N S% Ending (UTC) Time left Dups? Report

No RfXs since 18:39, 8 April 2019 (UTC).—cyberbot ITalk to my owner:Online


  • line numbers in diff view (argument, creates context for position within the document... requires knowing total line count as well)
  • Ordered lists for {{refbegin}} (still need to convert existing content)
  • hidden metadata on mobile [1]
  • √ flip the default of responsive for references element
  • Move us away from geohack as primary UI when clicking coordinates A map link
  • √ Fix print of collapsible content T152330
  • √ Update map box/leaflet.js
  • Add changetag support to wikEd
  • Add api-user-agent support to wikEd
  • Finish writing gadget example (stalled)
  • Collect all map layers and base maps we have in a demo
  • Make the maps stuff reusable, awesome (stalled)
  • Get rid of autocollapse on en.wp as much as possible (stalled)
  • Reimplement collapsible and NavFrame in mw-collapse (stalled)
  • Reimplement the main page using templatestyles after importing it in test.wp
  • √ Make the {{sort}} templates use data-sort-value
  • √ Finish conversion of {{nts}}
  • Fix sortkey in {{convert}}
  • √ Remove cookies from Gadget-watchlist-notice-core
  • √ Remove cookies from Gadget-geonotice-core
  • √ Remove cookies from Gadget-charinsert-core
  • √ Use jquery.textSelection api in Gadget-charinsert-core
  • Convert mbox'es to TemplateStyles
  • Move most in MediaWiki:Common.css to TemplateStyles where possible
  • rework userboxes to not use tables


/Sandbox /SandboxTemplate /SandboxTemplate2

Tool links[edit]

People being nice[edit]

Some people are really nice and have seen it fit to award me a barnstar. If vandals are one side of the Wikipedia spectrum, these people are surely at the complete opposite end.

Blueprint Barnstar 2.PNG The Template Barnstar
I've begun to include the Episode list template into the List of South Park episodes page. Before the template was made, the WikiProject was pretty much dead. Thanks for your hard work into making this a reality! Here's a barnstar to show my appreciation. Will2k 03:21, 12 June 2006 (UTC)
Working Man's Barnstar.png The Working Man's Barnstar
For your constant work to get us rid of the innumerable forks of Infobox television episode, I award you the Working man's barnstar. Circeus 20:49, 16 March 2007 (UTC)
Original Barnstar.png The Original Barnstar
Keep this barnstar as a record of your hard work getting the WP:TV assessment pages up and running and all your hard work on the project in general. Opark 77 00:48, 1 April 2007 (UTC)
Barnstar of Diligence.png The Barnstar of Diligence
Awarded for your diligence at WP:TV, upon your exit. Hope to see you back soon. Wikipedical 00:39, 13 May 2007 (UTC)
Socratic Barnstar.gif The Socratic Barnstar
I, Ursasapien, hereby award you the Socratic Barnstar for your exquisitely eloquent statement at The Episodes and characters arbitration. Your argument encapsulated the conflict and made a persuasive case for a sound solution. Thank you. Ursasapien (talk) 06:50, 11 December 2007 (UTC)
Random Acts of Kindness Barnstar.png The Random Acts of Kindness Barnstar
Thank you for fixing my template; this certainly qualifies as a random act of kindness - hence the applicable barnstar :) Piotr Konieczny aka Prokonsul Piotrus| talk 21:10, 25 March 2008 (UTC)
The Citation Barnstar The Citation Barnstar
In recognition for your fantastic work in clearing up the references on International Space Station, I hereby award you this Barnstar! Thanks for all your hard work! Colds7ream (talk) 18:37, 26 November 2008 (UTC)
Barnstar-abc.png The Helping Hand Barnstar
This Barnstar is awarded to TheDJ. For his wonderful assistance on village pump (technical), helping other users make wikipedia even better. Thank you.Ikip (talk) 14:58, 26 January 2009 (UTC)
Barnstar of Diligence.png The Barnstar of Diligence
For your tireless work during the start of the 2009 attack on Dutch Royal Family article. Yintaɳ  10:37, 2 May 2009 (UTC)
Blueprint Barnstar 2.PNG The Builder's Barnstar
Alert: Qui is awesome! I can tell if people are on when I need to know. Abce2|Free LemonadeOnly 25 cents 21:17, 22 June 2009 (UTC)
Vitruvian Barnstar.png The da Vinci Barnstar
The da Vinci Barnstar may be awarded to technical-type folk (programming and tools, bot building, admin or sysop work, link repair, Mediawiki developers, etc.) who use their skills to help the project or their other editors. For persevering with my troubles in getting my javascript working, you get one just for yourself :-). Thank you again for your help. AGK 14:08, 17 May 2010 (UTC)
Blueprint Barnstar 2.PNG The Developer's Barnstar
I award you this barnstar for fixing that annoying thumbnail-render glitch. Access Denied talk contribs editor review 18:03, 19 August 2010 (UTC)
Barnstar of Humour3.png The Barnstar of Good Humor
For Speaking bluntly on User talk:Pensacolian and making me laugh BB7 (talk) 19:43, 16 September 2010 (UTC)
Golden wikipedia featured star.svg Valued Contributor Award Smiley.svg
You have been identified as a valued contributor and your efforts are appreciated. We are honored to present you with the Valued Contributor Award and we thank you for donating your time, expertise and effort to Wikipedia. Keep up the good work. Thanks. (more details)
The WikiPen The WikiPen

For your many contributions to Wikipedia. Tyw7  (☎ Contact me! • Contributions)   Changing the world one edit at a time! 22:08, 16 April 2011 (UTC)

Original Barnstar.png The Original Barnstar
This barnstar is awarded to everyone who - whatever their opinion - contributed to the discussion about Wikipedia and SOPA. Thank you for being a part of the discussion. Presented by the Wikimedia Foundation.
Brilliant Idea Barnstar Hires.png The Brilliant Idea Barnstar
For creating Qui. I already gave you a pie, but I think you deserve a barnstar for this. Anonymouse321 (talkcontribs) 08:32, 24 October 2012 (


Vitruvian Barnstar Hires.png The Technical Barnstar
Awesome working with you on UW :) Nischay Nahata (talk) 20:41, 21 May 2013 (UTC)
Village Pump Barnstar.svg The Village Pump Barnstar
For being so amazingly helpful on WP:VPT! Ori.livneh (talk) 09:05, 11 April 2015 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
Thanks for Qui script :) Grind24 (talk) 14:31, 28 June 2015 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
*Thank you* for helping with "Add reference list to section preview if missing" Naraht (talk) 18:00, 23 February 2016 (UTC)
The Citation Barnstar The Citation Barnstar
For your contributions to making the addition of citations so much easier. Maproom (talk) 18:13, 23 February 2016 (UTC)(talk) 18:13, 23 February 2016 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
You're awesome. Thank you for going the extra mile to help with this. Whatamidoing (WMF) (talk) 01:35, 1 May 2016 (UTC)
Random Acts of Kindness Barnstar.png The Random Acts of Kindness Barnstar
And another from me for the same thing. Good job :-) Fred Gandt (talk|contribs) 01:49, 1 May 2016 (UTC)
Vitruvian Barnstar Hires.png Der Technikerorden
Thank you, I like the option to print the series box and the overview of related articles at the bottom of the article! Hawillmcse (talk) 11:38, 24 November 2016 (UTC)
Original Barnstar Hires.png The Original Barnstar
"Print Options are a godsend" - JoshuaRants (talk) 16:15, 18 May 2017 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
Many thanks for fixing the reftoolbar. Doc James (talk · contribs · email) 06:45, 1 June 2017 (UTC)
Thank-you-word-cloud.jpg Thank you...
...for this edit. I am not a coder in any sense of the word & always appreciate my questions & concerns about WP's underpinnings & inner-workings being treated with respect.

Cheers, Shearonink (talk) 15:42, 26 June 2017 (UTC)

Vitruvian Barnstar Hires.png The Technical Barnstar
For your help with this! Headbomb {t · c · p · b} 01:56, 11 July 2017 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
For the much appreciated LocalStorage checking routine that you so kindly added to my Toggle VF script -- P999 (talk) 21:59, 9 August 2017 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
You fixed my userscripts! Thank you! ♠PMC(talk) 10:23, 11 November 2017 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
For your help with my javascript request. Headbomb {t · c · p · b} 14:53, 21 August 2018 (UTC)
Vitruvian Barnstar Hires.png The Technical Barnstar
For this. It works stupidly well, and has increased my productivity so much! Headbomb {t · c · p · b} 19:46, 28 December 2018 (UTC)

Past wikiwork[edit]

too much...