Knowledge Base

Eoghan Henn 0
1
SEO basics
May 31, 2019

Case study: 28% page speed improvement with Cloudflare HTML caching

This case study describes how we used a basic implementation of Cloudflare's HTML caching feature on an e-commerce website to improve average page load times by 28%.
Read More
Eoghan Henn 0
14
Website migration SEO
February 26, 2019

Website migration SEO checklist

Based on our experience from a big number of website relaunches, we have compiled this website relaunch SEO checklist with lots of details and a free PDF version.
Read More
Eoghan Henn 13
18
Web analytics
August 30, 2018

Understand and eliminate spam traffic in Google Analytics

In order to eliminate spam traffic from your Google Analytics account, it is important to understand how the spam traffic gets into your account in the first place. This article explains how spam traffic in Google Analytics works and discusses various solutions to tackle the problem.
Read More
Eoghan Henn 5
18
Website migration SEO
August 23, 2018

Why you shouldn’t block your entire staging environment via robots.txt

It's a common practice to block entire staging environments via robot.txt - Learn about better ways to make sure your staging website doesn't get indexed.
Read More
Eoghan Henn 24
16
Web analytics
August 22, 2018

Cool stuff with lookup tables in Google Tag Manager

Lookup tables are one of the most useful and powerful features of Google Tag Manager when it comes to customising your Google Analytics tracking configuration. Learn what lookup tables are and how you can use them to improve your website tracking.
Read More
Eoghan Henn 105
4
International SEO
August 21, 2018

hreflang tags implementation guide – How to implement hreflang

The implementation of hreflang annotations can be difficult and is often done wrong. Here is how to get your hreflang annotations right.
Read More
Eoghan Henn 141
15
International SEO
August 20, 2018

How to use hreflang and canonical tags together

When you use hreflang as well as canonical tags on your website, you have to be careful not to send confusing signals to Google. Here's how to implement hreflang when you already have a canonical tag solution on your website.
Read More
Eoghan Henn
11
SEO basics
August 19, 2018

How to deal with crawl errors in Google Search Console (Webmaster Tools)

You know the problem: You open the crawl errors report of a website you've recently started working on in Google's Webmaster Tools and you see so many crawl errors that you don't know where to start.
Read More
Eoghan Henn 64
10
Web analytics
August 18, 2018

Monitoring and fixing 404 errors with Google Analytics

In this article, I explain how you can use two very simple custom reports in Google Analytics to monitor 404 errors on your website.
Read More
Eoghan Henn 48
13
International SEO
August 17, 2018

Can multiple hreflang tags point to one URL? John Mueller of Google says YES.

The correct implementation of hreflang annotations is quite a challenge for lots of webmasters, especially as Google's official documentation leaves a lot of room for interpretation. At SMX Munich 2016, John Mueller of Google shared some interesting information that is not included in Google's specifications. Read the full story here.
Read More
Eoghan Henn 0
5
SEO experiments
June 5, 2018

JavaScript SEO surprise! Google DOES use JS-injected canonical tags.

At I/O 2018, Google announced that they didn't use canonical tags that can only be found in the rendered HTML and not in the HTML source document. Our test results suggest that this statement was not true.
Read More
Eoghan Henn 37
10
moving from ccTLDs to a gTLD
Website migration SEO
May 7, 2018

Migrating from ccTLDs to a gTLD – The WHY, the HOW, and the WTF

This article highlights when and why it might make sense to move from a multi-ccTLD approach to a single-gTLD strategy, by looking at a case study and the SEO theory behind the topic. It also features technical advice for the migration itself and opinions from international SEO experts.
Read More
Eoghan Henn 2
13
SEO experiments
December 14, 2017

More JavaScript SEO experiments with Google Tag Manager

Learn how to change title tags, meta descriptions, noindex, canonical tags and internal links with Google Tag Manager and how Google deals with these changes.
Read More
Eoghan Henn 8
13
hreflang Google Tag Manager
SEO experiments
August 11, 2017

How to implement hreflang with Google Tag Manager

Have you ever wondered if you can implement hreflang with Google Tag Manager? This post explains how to do it in three easy steps.
Read More
Eoghan Henn 3
8
javascript-seo-test
SEO experiments
July 13, 2017

JavaScript SEO test: Does Google use pre- or post-DOM HTML for interpreting hreflang?

We wanted to know if Google uses pre- or post-DOM HTML for interpreting hreflang, so we did an experiment. See the surprising results here!
Read More
Eoghan Henn 0
8
Website migration SEO
February 8, 2017

How can a website relaunch harm your SEO performance?

Most webmasters are aware of the fact that a relaunch can cause serious harm to the SEO performance of their websites. But what exactly are the dangers?
Read More
Eoghan Henn 0
14
Website migration SEO
January 25, 2017

Website relaunch? How to identify important content on your old website

Are you planning a website relaunch or a site migration? Make sure you do not delete any important content that is driving organic traffic to your website.
Read More
Eoghan Henn 0
12
Company
January 19, 2017

Michael Weber and Eoghan Henn proudly present: searchVIU

We are happy and proud to announce searchVIU, a tool for advanced SEO analysis. Find out more about our big plans for 2017 here and be a part of our story!
Read More