AHREFS MENTION
SEO Experiments
Our scientific and data-driven approach to SEO testing challenges thoughts and opinions within the industry. This is why our SEO experiments have been shared by all the biggest names in SEO, with just a few listed below.
87,754
Opinions challenged
8,943
Hours of research
462,213
SEO’s Read our research
706+
SEO’s Referring to our research
AI VS HUMANS - THE SEO CONTENT EXPERIMENT
A controlled experiment to test how the rankings of AI generated content compares to human written content.
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THE SEO CONTENT COMPRESSION EXPERIMENT
Analysis of 42,000 webpages to look at content compression and ranking correlations.
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Cats Vs Dogs - Google Image Relevancy Experiment
An ongoing test to gauge Google's use of image text readability in the search results.
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404 Vs 410 - The Response Code Experiment
Google treats 404 and 410 URLs differently, but how differently? We looked at over 350,000 rows of data to find out.
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Google image reading experiment
An ongoing test to gauge Google's use of image text readability in the search results.
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Duplicate content Image study
A long term SEO experiment studying the effect on rankings when embedding widely used stock images on your site compared with using your own unique images.
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Hidden text experiment
This controlled SEO experiment examined the hypothesis that Google’s algorithms would prefer visible content over hidden content. The experiment clearly demonstrated Google’s preference for visible text.
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Outgoing Links Experiment
A long-term SEO experiment examining the hypothesis that outgoing links may play a role in Google’s ranking algorithms. The results were conclusive. Results were kindly observed by Rand Fishkin from SparkToro prior to publication.
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Long term shared hosting experiment
This technical experiment looked at the potential negative SEO effects of hosting a website on a shared IP address alongside 'bad neighbourhood' (low-quality, spammy and potentially malicious) type websites.
Read moreAchievements and referrals
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Rand Fishkin, Moz/Sparktoro
"They (RebootOnline) performed some wonderful, large-scale, long-term tests of CSS, of text area, of visible text, and of JavaScript hiding across many domains over a long period and basically proved to us that what Google says is in fact true, that they are treating this text behind here with less weight." - Rand Fishkin, Moz/Sparktoro
SEO ROUNDTABLE MENTION
Neil Patel, Neilpatel.com
"I recently came across an interesting study from Reboot that measured outbound links as a ranking signal." - Neil Patel, Neilpatel.com (previously QuickSprout & KISSmetrics)
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Brian Dean, Backlinko
"In fact, a recent industry study found a correlation between outbound links and Google rankings." - Brian Dean, Backlinko
SEJ FEATURE
MOZ FEATURE
THE DAILY EGG FEATURE
SEW MENTION
Barry Schwartz, Search Engine Roundtable
"WebmasterWorld has an SEO who tried an experiment, emailing 84 site owners across dozens of verticals, to see if they were interested in hiring his company to perform negative SEO. The results were pretty shocking." - Barry Schwartz, Search Engine Roundtable
HUBSPOT MENTION
MARKETING LAND MENTION
QUICKSPROUT MENTION
SPARKTORO MENTION
MHC FEATURE
SMART INSIGHTS MENTION
MARKETING PROFS MENTION
Our hands on approach to poking and prodding Google's algorithms to find out what really works when it comes to ranking websites has earned us the reputation as the leading SEO company in the UK. We hope you enjoy exploring some of our research in the links above, and check back soon for our next experiment.
