Posts by Joost de Valk

Joost de Valk

Joost de Valk is the founder and CEO of Yoast. He's a WordPress / Web developer, SEO & and an Open Source fanatic. He's also (and more importantly) the father of three sons called Tycho, Ravi and Borre, a daughter called Wende and the husband of the lovely Marieke, who also works at Yoast.

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Check out posts by Joost

HTTP 503: Handling site maintenance correctly for SEO

18 March 2013 by Joost de Valk » - 14 Comments

HTTP 503 advice from Yoast

Last week I got a few messages from Google Webmaster Tools, saying it couldn’t access the robots.txt file on a site of a client. Turns out the client didn’t handle scheduled downtime correctly, causing problems with Google. While this article covers some rather basic technical SEO the last bit might be interesting for more advanced […]

Category: General SEO

Local SEO made easy!

14 March 2013 by Joost de Valk » - 68 Comments

Local SEO by Yoast

We’ve been hard at work here at, together with our good friend Arjan Snaterse, to complete the delivery of our next baby: the Local SEO plugin, which is, just like our Video SEO plugin, an extension to the WordPress SEO plugin. The Local SEO makes creating geo sitemaps and KML files a breeze, while »

Category: General SEO

Why we don’t support old WordPress versions

7 March 2013 by Joost de Valk » - 23 Comments

WordPress updates

For all sorts of reasons, some people have a problem with updating WordPress installs properly. I will state now that for both our free and premium plugins we do not support anything but the latest and the prior to last version. At the time of writing that’s WordPress 3.5 and WordPress 3.4. If you’re running anything »

Category: WordPress

500 Website Reviews, what we’ve learned!

22 January 2013 by Joost de Valk » - 66 Comments

The Yoast Website review team, from left to right: Michiel, Joost and Thijs

Over the last 3 years, we’ve sold & delivered 500 website reviews, selling our 500th today. I’m incredibly proud of this and wanted to share some of our learnings in this post, as well as announce some changes. Some stats on our website reviews I started doing these website reviews in 2010, finishing 42 of »

Categories: eCommerce, General SEO, Usability & Conversion, WordPress

Change of pricing / licensing for Video SEO plugin

8 January 2013 by Joost de Valk » - 59 Comments


As of last night, a license for our Video SEO plugin has become $20 cheaper for what’s probably about 90% of our customers. While doing an analysis over the holidays of what we’d sold and how much time we spent supporting people, we found that people using the plugin on multiple sites were bound to ask »

Category: WordPress

WordPress threaded comments and SEO

12 December 2012 by Joost de Valk » - 39 Comments

Threaded Comments & SEO

Today my buddy Sander pointed out that he suddenly had pages showing as noindex,nofollow when he ran a spider across a site. A bit more researching learned us that WordPress automatically adds a noindex, nofollow robots meta tag to each URL that has ?replytocom in it. At first I (wrongly) thought this was new to »

Category: WordPress

Want SEOs to lose their job? Start doing yours!

11 December 2012 by Joost de Valk » - 61 Comments


This morning, an article by Paul Boag was published on Smashing Magazine that got a few SEOs, including myself, all riled up. As Bill Slawski pointed out in the comments, Paul has written articles on SEO before. Paul, whom I respect tremendously for his web development work, obviously doesn’t “get” SEO and has evidently had »

Category: General SEO

WordPress SEO, more secure than ever before.

7 December 2012 by Joost de Valk » - 25 Comments

Sucuri Safe Plugin

One of the benefits of making money on paid plugins is that you can more easily spend money for other people to look at and even better, review your plugins. Today is the first result of what might become a somewhat longer tradition: WordPress SEO is now a Sucuri Safe Plugin. What this means? It »

Category: WordPress

Jetpack and WordPress SEO

29 November 2012 by Joost de Valk » - 85 Comments


The Jetpack plugin for WordPress has quite a few nice bits and pieces. There’s one issue: the developers at Automattic seem to think they’re alone in the world. In their last release, they enabled OpenGraph tags by default with no setting to disable it. Even when you already have WordPress SEO enabled and OpenGraph enabled »

Category: WordPress

Video SEO for Wistia & Vippy

13 November 2012 by Joost de Valk » - 20 Comments


As promised in my post yesterday, today marks the day for a new release of my Video SEO plugin. This one brings support for yet another few plugins and some more: two new video hosting platforms: Wistia and Vippy. Wistia support: embedding and SEO The support for Wistia that is added in this release was on the »

Category: WordPress