WordPress › Profiles » Olaf Lederer

Member Since: October 2nd, 2007
Location: Doetinchem, the Netherlands
Website: https://www.olaflederer.com
Job Title: Web Developer
Employer: finalwebsites.com
Find me on:

Bio

My name is Olaf Lederer and I’m building PHP powered web applications since 2002. My first blog was built with WordPress in 2006 and today most of my web development jobs are done by using WordPress. Beside building websites, I spend a lot of time on online marketing, blogging and other “geeky” internet stuff.

Interests

WordPress, building websites, online marketing, writing blogs

WordPress Origin Story

I remember me that a friend asked me in 2005 why I didn’t have a blog (of course using WordPress). He mentioned: “That would be a great update for your website about PHP web development”. It took some time to work on that idea and finally in 2006 I published my first article “Parse html with PHP, a preg_match_all tutorial” on my Web Development Blog. The funny thing is that it took ~6 month to get some visitors for this website. While my first website finalwebsites.com had already a ~400 visitors a day, it was sometimes very hard to continue blogging. It took also some time before I tweaked or developed my first own WordPress theme. During the first years I used free and premium themes and finally in 2009 I programmed a custom theme for my dutch website on finalwebsites.nl. That was also the time that I wrote several plugins for the standalone version of bbPress. Today 50% of my personal and customer’s websites are based on WordPress and I write a lot of custom code to tweak these WordPress websites to the next level.

Contributions

WordCamp Speaker
WordCamp Speaker
Plugin Developer
Plugin Developer

Activity
Plugins
Favorites

Posted a reply to Required form field validation in multi step forms, on the site WordPress.org Forums:
Hi mondula2016, looks like you're in the wrong forum :) This question is about the…

1 week ago
Created a topic, Required form field validation in multi step forms, on the site WordPress.org Forums:
Hi, the plugin offers a great feature for multi step …

1 week ago
Created a topic, Support for separate product tables in future WC versions?, on the site WordPress.org Forums:
Hi, I really like to use this plugin for quick price a…

1 week ago
Posted a reply to welke hosting is het beste om wordpress webstes te bouwen?, on the site Support forums:
Hallo Johannes, De lijst van Jeroen zou ik nog even negeren. Deze 3 bedrijven worden…

3 months ago
Posted a reply to Multistore, on the site WordPress.org Forums:
Same feature request for Multi site from me :) Looks like your check for the…

3 months ago
Posted a reply to Flexible features and a great optimization result!, on the site WordPress.org Forums:
You're welcome. (it's just the truth)

3 months ago
Created a topic, Flexible features and a great optimization result!, on the site WordPress.org Forums:
I'm using the plugin on several sites for more than a …

3 months ago
Posted a reply to Minifying inline JS code, on the site WordPress.org Forums:
Looks like I replied to the other topic as well :) Thanks Frank, this filter…

3 months ago
Posted a reply to HTML not optimized CSS still as text., on the site WordPress.org Forums:
Works great, thank you!

3 months ago
Created a topic, Minifying inline JS code, on the site WordPress.org Forums:
Hi Frank, thanks for providing such a great plugin! …

3 months ago
Created a topic, NoIndex for archive sub-pages, on the site WordPress.org Forums:
Hi, today I've noticed that the option If you want …

3 months ago
Created a topic, Nice and flexible ACF add-on!, on the site WordPress.org Forums:
I used the "other" ACF search add-on during the last y…

3 months ago
Posted a reply to File edit function doesn’t work for PHP files anymore, on the site WordPress.org Forums:
Thanks for the information. I searched the web before but there wasn't that information available.…

4 months ago
Created a topic, File edit function doesn’t work for PHP files anymore, on the site WordPress.org Forums:
Hi, there is a problem with WP 4.9 and your plugin. W…

4 months ago
Posted a reply to The settings page can’t be loaded if the users tabel is huge, on the site WordPress.org Forums:
Hi, I'm glad you guys can fix it this way :)

4 months ago
Created a topic, The settings page can’t be loaded if the users tabel is huge, on the site WordPress.org Forums:
Hi, our shop has more than 50K customers and the sett…

4 months ago
Created a topic, Great GDPR plugin for most types of websites, on the site WordPress.org Forums:
Great plugin, very easy to use. Just add the different…

4 months ago
Posted a reply to More options for “Delete Old Events”, on the site WordPress.org Forums:
Hi Ed, is there no filter I can use to add a static value? You…

5 months ago
Created a topic, More options for “Delete Old Events”, on the site WordPress.org Forums:
I really like the new feature “Delete Old Events” …

5 months ago
Confirmed as a speaker for WordCamp Nijmegen 2018 coming up on August 30th

5 months ago
Posted a reply to colors are not working, on the site WordPress.org Forums:
Same here, any custom status has the same grey color. There is also no Icon.

6 months ago
Created a topic, Format date field for the Dutch language, on the site WordPress.org Forums:
Hi, Great the plugin has already a date field :) What…

6 months ago
Posted a reply to Error while saving the notification post, on the site WordPress.org Forums:
I found the problem in some custom code/query. It's solved an not related to the…

6 months ago
Posted a reply to Error while saving the notification post, on the site WordPress.org Forums:
It happens only for your own post type, others even custom post types are fine.

6 months ago
Posted a reply to Error while saving the notification post, on the site WordPress.org Forums:
Hi, you're right it's a problem together with this premium theme: https://www.cssigniter.com/themes/roxima/ What do you…

6 months ago
Created a topic, Error while saving the notification post, on the site WordPress.org Forums:
Hi, just added your plugin and I really like the feat…

6 months ago
Posted a reply to Whenever i use this i get the error ‘The entered email address isn’t valid.’, on the site WordPress.org Forums:
Hi, do you enabled the Mailgun validation feature? Turn this option off, they offer only…

8 months ago
Posted a reply to Latest update breaks my custom code (template), on the site WordPress.org Forums:
I checked the changed plugin files and the current changes are not related to the…

9 months ago
Posted a reply to Latest update breaks my custom code (template), on the site WordPress.org Forums:
Hi Harish, it worked with version 2.0.2 and many versions before ;) The error doesn't…

9 months ago
Created a topic, Latest update breaks my custom code (template), on the site WordPress.org Forums:
Hi, I get this error during the update to your latest…

9 months ago
Posted a reply to Dates are disappearing (sometimes) at the backend, on the site WordPress.org Forums:
@ajlowndes, right we use a Google spreadsheet use the CSV format for the import. The…

10 months ago
Posted a reply to Dates are disappearing (sometimes) at the backend, on the site WordPress.org Forums:
Hi Allyson, great to hear you've noticed this issue. It happens after saving the product…

10 months ago
Posted a reply to How about an integration with MC4WP?, on the site WordPress.org Forums:
Works great! Thanks PS, this way you can built as many forms you like even…

11 months ago
Posted a reply to Mailgun API – only sends HTML, no plain text, on the site WordPress.org Forums:
Same here for Mailgun and Sendgrid. The email messages aren't valid anymore. I installed the…

11 months ago
Posted a reply to How about an integration with MC4WP?, on the site WordPress.org Forums:
Hi Danny, thanks for the follow up. See you next time during a WordPress Meetup…

1 year ago
Posted a reply to How about an integration with MC4WP?, on the site WordPress.org Forums:
Thanks Lap, since I'm not really a MC4WP user, I never noticed that this is…

1 year ago
Created a topic, How about an integration with MC4WP?, on the site WordPress.org Forums:
Hi Danny, I tried you new plugin and I think I will u…

1 year ago
Created a topic, Dates are disappearing (sometimes) at the backend, on the site WordPress.org Forums:
Hi, first of all this plugin is best you can use if y…

1 year ago
Posted a reply to Moving the VAT field, on the site WordPress.org Forums:
Thanks Diego, the missing namespace was the problem.

1 year ago
Posted a reply to Moving the VAT field, on the site WordPress.org Forums:
Hi Diego, it's strange if I use the class_exists call the remove/action doesn't work. If…

1 year ago
Created a topic, Moving the VAT field, on the site WordPress.org Forums:
Hi, I'm using this code on my site and it works fine …

1 year ago
Posted a reply to Update log, on the site WordPress.org Forums:
Hi, that's not a problem, please add this information as well. During an update I…

1 year ago
Created a topic, Update log, on the site WordPress.org Forums:
Hi, There is another update available (ver. 3.10) and…

1 year ago
Posted a reply to Random popup message shows up, on the site WordPress.org Forums:
Hi, today I disabled row #18 inside the file class-ccf-form-manager.php //add_action( 'admin_footer', array( $this, 'print_templates'…

1 year ago
Posted a reply to Make the Participant Information Fields Required, on the site WordPress.org Forums:
Hi Allyson, thanks for the quick response. I played with the different actions and the…

1 year ago
Posted a reply to Make the Participant Information Fields Required, on the site WordPress.org Forums:
Hi, I don't need the participants on my checkout page and hide them using a…

1 year ago
Created a topic, Random popup message shows up, on the site WordPress.org Forums:
Hi, please check the linked screenshot. This message …

1 year ago
Posted a reply to Own Login CSS doesn’t work, on the site WordPress.org Forums:
Same problem here for more than 100 websites (using our branding for the login page).

1 year ago
Committed [1729966] to Plugins Trac:
Added update information

1 year ago
Committed [1729964] to Plugins Trac:
Mailchimp API wrapper update + Current WP version checked

1 year ago

Developer

Ajax Contact Form

Active Installs: 100+
MailChimp Subscription Plus

Active Installs: 200+

Profiles

Bio

Interests

WordPress Origin Story

Contributions

Developer

Plugins