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

Image SEO: alt tag and title tag optimization

20 October 2015 by Joost de Valk » - 12 Comments

Good alt text or alt tags improve accessibility of your site

You include images in your articles to get people to read your text. Well-chosen images also strengthen your message. You shouldn’t forget to give those images good alt attributes: alt tags and title tags strengthen the message towards search engine spiders and improve the accessibility of your website. In this post I’ll explain all about alt […]

Category: General SEO

Weekly SEO Recap: AJAX crawling and Panda

16 October 2015 by Joost de Valk »

Joost's Weekly SEO Recap

After this week’s launch of our first Basic SEO training, it’s now time to sit back and relax. For about two minutes. The next milestone is our upcoming Yoast SEO release which we’ve determined, because of the sheer amount of new features in it, will be called Yoast SEO 3.0. Luckily, the search engines took it »

Category: General SEO

Google Penguin explained

15 October 2015 by Joost de Valk » - 9 Comments

Joost explains Google Penguin

One of the most painful Google updates that can hit a website is called Penguin. Google Penguin aims to remove sites from the search results that have been trying to game Google by buying or otherwise “unnaturally acquiring” links to their website. It does that by basically applying a negative value to specific links. So if you »

Category: General SEO

Weekly SEO Recap: AMPlified spam

9 October 2015 by Joost de Valk » - 9 Comments

Joost's Weekly SEO Recap

This is a week of quite a bit of news. Google pushed a new standard called Accelerated Mobile Pages and an update to prevent hacked sites from ranking in the search results. Let’s dive in: Accelerated Mobile Pages The biggest news of the week is Google’s push for a new web standard they’ve developed together with a ton »

Category: General SEO

Google Panda & low quality pages

5 October 2015 by Joost de Valk » - 15 Comments

google panda - low quality pages

While reviewing websites, quite often we find sites that already have become a victim of Google Panda’s algorithm, or run the risk of getting “Pandalized”. A site runs the risk of being hit by Panda when it has a lot of low quality pages. In this post I want to give you some quick insights into what »

Category: General SEO

Weekly SEO Recap: Google app indexing & rel=author

2 October 2015 by Joost de Valk » - 1 Comment

Joost's Weekly SEO Recap

At Yoast, we’ve been ridiculously busy getting ready for all the product launches we’ve got coming up, like our new eBook and our upcoming Basic SEO training course. Luckily, we also still have time to look at the news because Google has been rather busy and there was other stuff to tell too, regarding new Apple releases. »

Category: General SEO

Adding a Pinned Tab icon for Safari

2 October 2015 by Joost de Valk »

Safari pinned tabs - mask-icon

With the release of Mac OS X 10.11, Safari finally got pinned tabs. While all other browsers use a site’s favicon for the pinned tab, Apple deemed that “not esthetically pleasing enough” and created a new type of icon for it, which they call a “mask-icon”. By default, they’ll use the first letter of your domain »

Ask Yoast: do I need to optimize all of my product pages?

30 September 2015 by Joost de Valk » - 5 Comments


In the series ‘Ask Yoast’ we answer your SEO related question. Submit your question by sending an email to and you might get a personal answer on video! Today’s SEO question comes from Gude Hudson-Gool from Kent. She is wondering: “In my online shop, should I aim to get the SEO ‘green light’ on each individual »

Category: Content SEO

Weekly SEO Recap: local and iOS9 search

25 September 2015 by Joost de Valk » - 1 Comment

Joost's Weekly SEO Recap

I’m at the airport in Munich while writing this, going back home after a week with the brightest minds in SEO surrounding me at SEOktoberfest. Luckily, there was plenty of news to discuss :) Local search If you’re doing local search optimization and want to know a bit more about it, Moz’s local search ranking factors research piece »

Category: General SEO

Ask Yoast: how to handle blog posts that will expire?

24 September 2015 by Joost de Valk »

ask yoast

Two weeks ago we asked you to post your SEO question for Yoast on our Facebook page. We loved to see the questions coming in! We’ve chosen (what we considered) the best ones and in the weeks to come we’ll provide you with answers to the selected questions. The first question that got selected comes from Chris: “How »

Category: Content SEO