How David approaches technical SEO research

Most technical SEO advice exists in one of two forms. The first is theoretical: here is what Google says matters and here is why it should affect rankings. The second is anecdotal: here is what happened on one site after one change. David is interested in a third form, controlled measurement over defined periods with documented conditions and explicitly stated limitations.

His background in web performance engineering gave him both the technical foundation to implement precise changes and the professional habit of measuring outcomes before declaring success. In performance engineering, a deployment that improves load time on one device type while degrading it on another is not a success. The same precision applies to his SEO experiments. A technical change that improves Core Web Vitals scores without producing a measurable ranking change within a defined window is documented as such, not reframed as a long-term investment with unmeasurable benefits.

 

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What David focuses on at KatvTech

David leads all experiments in the technical SEO dimension of KatvTech’s research programme. His specific areas of focus are:

• Core Web Vitals as ranking factors. Measuring whether and how quickly improvements to LCP, INP, and CLS produce observable ranking changes, and under what conditions the relationship is strongest.
• Composite CWV scoring impact. Following the March 2026 update that introduced aggregated scoring, David is running experiments to determine how the composite model changes the relative importance of each individual metric.
• Indexing speed and crawlability. What hosting configurations, sitemap structures, internal linking patterns, and technical implementations affect how quickly new content on new domains gets discovered and indexed.
• Theme and plugin performance impact. Measuring the ranking implications of specific WordPress theme and plugin choices, particularly for sites using heavy page builders that consistently produce poor INP scores on mobile.

 

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David on technical SEO in 2026

The technical SEO conversation in 2026 has a tendency to conflate two different things: technical health as a prerequisite for ranking, and technical improvements as a mechanism for gaining ranking. These are not the same claim and they do not have the same evidence behind them.

A site with fundamental technical problems, broken crawlability, failed Core Web Vitals, no sitemap, blocked resources, will struggle to rank regardless of content quality. Fixing those problems removes a barrier. It does not guarantee a ranking gain. The question David finds more interesting is the marginal one: on a site that is already technically functional, how much does a measurable improvement in a specific technical metric move rankings, on what type of content, over what time period, under what competitive conditions?

That question does not have a clean universal answer. David is building the dataset that makes a more specific answer possible.

 

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Experiments led by David Brauksworth

David authors all experiments in the technical performance dimension of KatvTech’s Ranking Experiments category. Each article follows KatvTech’s standard five-part methodology and includes the specific technical conditions, hosting environment, and measurement tools used in each test.

Technical suggestions and experiment proposals can be submitted through the contact page. David prioritises proposals that include a specific measurable hypothesis and a practical implementation context.