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Olaf Lederer

Web Developer at finalwebsites.com

@finalwebsites Doetinchem, the Netherlands joined Oct 2007

finalwebsites.nl github.com/finalwebsites Slack: @Olaf
    Languages nl_NL

    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 90% 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.

    Badges

    CODE
    2 badges
    Core Contributor '24 Plugin Developer
    COMMUNITY
    2 badges
    WordCamp Organizer '19 WordCamp Speaker '18
    POLYGLOTS
    1 badge
    Translation Contributor '19

    Current Job

    Web Developer
    Present
    finalwebsites.com

    Recent impact

    Score weights high-impact work (commits, releases, approved translations, props) at 3x routine activity.

    Last 30 days
    1contribution
    high1
    medium0
    score3
    Last 90 days
    9contributions
    high3
    medium6
    score15
    Last 12 months
    63contributions
    high5
    medium58
    score73

    WordPress releases

    Contributed to 2 releases
    • 6.8
    • 6.7

    Contributions

    Type
    May 2026
    May 18 Mon · 17:25
    Polyglots high
    Translated 1 string on translate.wordpress.org.
    April 2026
    Apr 30 Thu · 08:58
    Forums med
    Created a topic, How to whitelist specific json API requests, on the site WordPress.org Forums:
    Hi,For most websites, I use the "WordPress REST API" o…
    Apr 30 Thu · 08:57
    Forums med
    Created a topic, PHP mail function, on the site WordPress.org Forums:
    Hi, On a large number of hosting platforms, the PHP…
    Apr 26 Sun · 15:22
    Polyglots high
    Translated 16 strings on translate.wordpress.org.
    Apr 26 Sun · 14:05
    Polyglots med
    Suggested 60 strings on translate.wordpress.org.
    March 2026
    Mar 31 Tue · 13:08
    Polyglots high
    Translated 3 strings on translate.wordpress.org.
    Mar 31 Tue · 12:13
    Polyglots med
    Suggested 18 strings on translate.wordpress.org.
    Mar 17 Tue · 13:57
    Forums med
    Posted a reply to [EO4WP: EmailOctopus for WordPress] Email sign-up not capturing name, server 500 error, on the site WordPress.org Forums:
    Hi @amberrcummings, actually I did nothing :)Maybe it was a temporary limit/issue for your hosting…
    Mar 15 Sun · 11:11
    Forums med
    Posted a reply to [EO4WP: EmailOctopus for WordPress] Email sign-up not capturing name, server 500 error, on the site WordPress.org Forums:
    HI Amber,I tried the form on your website and the subscription was successful. But like…
    December 2025
    Dec 15 Mon · 11:24
    Forums med
    Posted a reply to [NinjaFirewall (WP Edition) - Advanced Security Plugin and Firewall] 404 status for blocked none, on the site WordPress.org Forums:
    Hi,I'm using two different server types:Apache with a Nginx frontend: That one shows a 403Nginx:…