About me
My name is Yann (yann.com) and I am presently lead professional WordPress developer at WP&Co. I have also been a freelance open-source web developer based in Paris, France for the last 10 years. My experience with the Internet and free software systems goes back to ca. 1994, when I installed my first Yggdrasil and Slackware CD-ROM based GNU/Linux distributions and connected to the Internet in Japan, where I was living at that time (and teaching a few CS and IT classes to French and English-speaking students). Even before that, I had been experimenting somewhat with BBSs and the wonderful French Minitel network.
I got my first computer at the age of 12 (a Commodore 64) and never ceased programming as a hobby since that day. In 1996 I founded one of the first web design agencies in France, properly dubbed abc.fr (I still use that domain name for my personal e-mail).
After running this company for 10 years, I decided I had enough of building websites for other people, and crossed over to working for one of the top-3 worldwide Internet high-tech publishers. I became Technical director for the portals of the Bestofmedia Group, managing a team of 20 PHP/MySql developers that make the tomshardware.com, Tom’s Guide and Tom’s Games sites run worldwide.
In 2009, I realized it was time for me to give back to the open-source community a bit of what I had benefited from all those years. I thus became self-employed again, and started a bunch of new projects, mainly involving the promotion of hyper-local community websites run by citizens. I built up on the experience of running Nogent-Citoyen.com, one of the most successful independent hyperlocal web projects in the Paris area, together with my wife (a professional journalist).
In the course of publishing my own sites, I had become more and more involved in WordPress.org-based developments, and started publicly releasing my own plug-ins. I have contributed around 25 WP, WP MU, BuddyPress and WordPress 3 plugins over the last 2 years, some of which have become quite successful (over 61,000 downloads), with a user community actively requesting new features and improvements. Here’s how I became one of the top-400 WordPress plugin authors in the course of a few months, and decided to focus on that platform, and become an independent open-source software developer and professional WordPress consultant.
I founded my new company, Celyan.com in the begining of 2010, dedicated to publishing hyperlocal community sites and providing strategic consultancy services (including SEO auditing) and custom software development to professional users of the WordPress, BuddyPress and bbPress platforms worldwide (50% of my clients are based outside of France, my plugins have been translated in 9 languages).
In 2017, Celyan’s WordPress development activities have become known under the registered trademark WP&Co (see wordpressandco.com)
Over the course of my career I have also been a CS and IT teacher in Tokyo and Paris (to BA and International MBA classes), and a professional English->French technical translator (for Data Communications Magazine among others)
This site is my personal blog, with random rants about anything geek ranging from trips in Japan to voiding warranties on home electronics gadgets or messing with a soldering iron. It also covers some more technical stuff with a professional angle on WP or PHP/MySql development techniques. Sometimes I write in English, sometimes in French, depending on my mood of the day. I usually translate the most popular posts in the other language.
Please use the provided contact form for any inquiry.
You can also download my CV here (Pdf format)
le 22 August 2009 à 1:47 h
Hi Yann,
is there a chance or the possibility to change your Recent Posts Widget into a new widget that shows 5 or more random posts of the whole blog and in my wished case only as thumbnails without any text or something?
Thx in advance and greetings from germany
Dennis from the Babbel-Net Team
le 23 April 2010 à 12:25 h
Salut Yann
Voila merci pour votre correction concernant le plugin wp-theme-switcher, vous pouvez me l’envoyer via ce mail.
Merci encore
le 10 November 2010 à 16:37 h
Je viens de visiter nogent-citoyen, c’est impressionnant pour du WordPress. Ca doit représenter pas mal de travail.
Bonne continuation,
le 10 November 2010 à 18:00 h
Pas tant que ça finalement, essentiellement un thème sur mesure et quelques plugins maison, les plus importants ayant été offerts à la communauté en open-source. Merci pour vos encouragements.
le 9 December 2010 à 17:28 h
Bonjour
Bravo pour votre travail et pour vos contributions. Parmi le millier de plugins que j’ai testé je dois reconnaître que les vôtres sont d’une grande qualité et m’aident énormément pour préparer mon site sur lequel je bosse depuis des mois
J’utilise depuis peu ATA. Est qu’il serait possible d’avoir quelques tuyaux sur des soucis sur lesquels je coince. Je ne suis pas un développeur mais à force de bosser dessus…
Merci
le 29 December 2010 à 11:49 h
Hello
The YD Recent posts are displaying on the top of the text. I want to display them bottom of my text
Plz tell, how it wud be possible?
le 22 February 2011 à 18:30 h
Having a problem with my site after your update, can you help please ? many thanks Femi.
le 4 August 2011 à 19:37 h
Dear Yann,
Web log tools collection blog reported today that a security flaw in the Tim Thumb plugin was discovered.
http://weblogtoolscollection.com/archives/2011/08/04/timthumb-security-vulnerability/
I am worried about the security of my blog as I am using the YD recent posts plugin (which depents on Tim Thumb) in my blog. How will this affect the security of my blog?
The author of Tim Thumb has relased a fix but I really don’t understand how to do it…
le 4 August 2011 à 19:54 h
@Yohan: The version of Timthumb included with some of my plugins is not affected with the security flaw, and never was. That version is quite old and never supported the vulnerable feature (it does not manage content from external sites at all). I guess that is a relief for you as it was for me when I checked the issue this morning.
le 26 September 2011 à 13:40 h
Hello Yan,
I have just discovered your Export2Email plugin, I have been looking for a plugin like this for many weeks.
I am using it in a WP blog within a Magento store, the blog pages will feature new products deals for our sales-team to send to their contacts.
I am using WPv3.2.1 – the plug-in seems to run but the button does not display at the foot of the pages, this may be because my use of WP is within a Magento ‘shell’ which does not alow widget boxes to display.
Can I add the E2E button by editing my ‘pages.php template?
I look forward to hearing from you.
le 26 September 2011 à 14:19 h
@Kevin. Yes, you can use the template function as explained here: http://wordpress.org/extend/plugins/yd-export2email/faq/
le 10 December 2011 à 8:44 h
Hi there… sorry to post on your “about” page, but I can’t seem to add comments to your YDZoomify page.
Simple problem; I’ve followed all the installation instructions, but when I add the code to my post and publish it, all I see is the code printed as text. Nothing happens. I must be missing some simply key thing – but I have no idea what it is… any suggestions? Thanks…
le 3 February 2012 à 6:00 h
I love this plugin but image thumbnails are broken on my site. Any advice to fix it?
http://www.streetsmartfinance.net/
Thanks,
Shilpan
le 7 March 2012 à 21:18 h
Bonjour Yann,
Je suis un heureux utilisateur du widget de votre pluggin “Recent Post”.
Lorsque je décoche “Same settings on other pages:” afin d’ ajouter une seconde liste de posts d’une catégorie différente (avec “Additional query parameters:”), il ne s’affiche plus que les posts d’une seule catégorie. Comment puis-je faire pour afficher les deux listes des deux catégories différentes ? D’où peut provenir le problème ?
J’ai beau vérifier dans le FAQ je n’ai pas trouvé la réponse à mes questions.
Que puis-je faire ?
Merci ! 😉
le 8 March 2012 à 10:00 h
@Phantom: le plugin YD Recent Posts permet d’avoir une sélection différente sur la page d’accueil d’une part, et sur toutes les autres pages d’autre part. Est-ce bien ce que vous cherchez à faire ? PS : il y a une version française du plugin, et de la page de support du plugin, merci de poser vos questions au bon endroit 😉
le 26 March 2012 à 22:44 h
Would you by any chance know how to remove post thumbnails in posts aggregated by FeedWordPress?
le 5 April 2012 à 8:57 h
Please help,
I installed your plug-in because I thought I could replicate my main theme on my multisite to all of my networked WP sites. I attempted to copy over the theme, but got a memory error, and most of my sites display this:
Warning: require(/home/brego/public_html/wp-content/themes/suffusion/inc/theme-options.php) [function.require]: failed to open stream: No such file or directory in /home/brego/public_html/wp-content/themes/twentyeleven/functions.php on line 92
Fatal error: require() [function.require]: Failed opening required ‘/home/brego/public_html/wp-content/themes/suffusion/inc/theme-options.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/brego/public_html/wp-content/themes/twentyeleven/functions.php on line 92
le 5 April 2012 à 9:43 h
@Edmind: please post on the right page. The error does not seem related to my plugin.
le 2 May 2013 à 22:16 h
cher mr. dubois…
je viens de decouvrir votre site et le trouve tres interessant…
j’ai une question pour vous, ce qui n’est pas vraiment a propos des ordinateurs…
que pensez-vous de la chanson de ‘the police’, ‘un the au sahara’?
amicalement…
okino b. saber
le 14 January 2014 à 23:35 h
Mr dubois
Je n’arrive plus a rentrer dans le site car j’ai cette erreur :
Fatal error: Call-time pass-by-reference has been removed in /home/orlb6foc/public_html/wp-content/plugins/yd-feedwordpress-content-filter/inc/yd-widget-framework.inc.php on line 156
Avez-vous quelques suggestions. Mon site principal est :
http://www.UrbanPortals.com et j’ai un serveur dedie avec hostgator.
Merci d’avance
le 15 January 2014 à 1:16 h
@Giuseppe: Ce plugin n’est plus compatible avec la version de PHP. Vous pouvez le rendre compatible en remplaçant toutes les variables &$this par $this (sans le &) dans le fichier /wp-content/plugins/yd-feedwordpress-content-filter/inc/yd-widget-framework.inc.php
Sinon, pour retrouver tout de suite l’accès à votre site, supprimez complètement le dossier /yd-feedwordpress-content-filter … mais cela désactivera le plugin.
le 29 September 2015 à 20:44 h
hi,
i’m using your news plugin, and i can not make the thumbnails show up when i am editing some news or creating new one. please contact me with solution when you can.
regards
le 30 September 2015 à 10:21 h
@Zlatko: please specify which of my plugins you are referring to exactly. I have authored dozens of WordPress plugins in the recent years…
le 9 October 2015 à 1:51 h
Bonjour Yann,
Just a quick query on whether you are still maintaining the YD Network-wide Options. I was considering installing it but got the warning that it hasn’t been updated for two years.
Thanks for your response.
le 9 October 2015 à 13:00 h
Hi Mark. I’m not maintaining that plugin (no time, sorry), and not even actively using it anymore. You might try it and see if it still works for you. I know a lot of people still have luck using those old plugins.