The comparator websites and its effect on SEO

Comparison websites have evolved significantly since the early days of the internet. In the early years of the web, these platforms worked mainly as price listings or digital directories, where users could view different options for a product or service and compare costs. At La Teva Web we have witnessed this evolution first-hand, and today we want to explain how they have changed and what impact they currently have on SEO.

Some of the best-known comparison sites from this early period were Kelkoo, Ciao! and Twenga, portals whose value proposition was based on showing the most competitive price available on the market.

Over time, this model has become more sophisticated. Today's comparison sites no longer just show prices; they now integrate product analysis, user ratings, rankings, buying guides and editorial content.

This type of content better matches the search intent of users and, at the same time, is particularly useful for search engines and AI-based search systems, which often use comparisons to generate summarised responses.

What are comparison websites?

A comparison website is a digital platform that allows users to analyse different products or services on a single page, making it easier to reach a purchasing decision. In many cases, these portals act as intermediaries between the consumer and businesses, through affiliate systems or lead generation models.

How to turn comparison sites into allies

You have every right to complain about comparison sites, but honestly, you are not in a position to change them. The most sensible approach is to find their positive elements and make the most of them. Here are five concrete strategies to do so:

1. Defend your brand in the SERPs

When someone searches for your company name, you need to dominate the first page of Google: homepage, product pages, Google Business, social media, reviews and your own content. Otherwise, comparison sites will take the opportunity to rank their pages using your brand name.

2. Optimise your presence within the comparison site

If you are going to be listed on a comparison site, do it properly: listings with quality images, complete descriptions, well-filled attributes, competitive prices and positive reviews. Your listing on the comparison site is, in effect, another landing page for your brand.

3. Create your own comparative content

If comparison sites profit from content like "X vs Y" or "Top 10 best…", why not do the same yourself? Articles such as "Your brand vs Competitor A" allow you to rank for transactional searches and control the narrative.

4. Focus on long-tail and informational content

Comparison sites are strong in generic transactional searches, but weak in specific informational ones. This is your opportunity: guides, tutorials, glossaries, FAQs, in-depth reviews… Everything that a comparison site cannot generate at scale.

5. Build authority and E-E-A-T

Google is increasingly rewarding signals of experience, expertise, authority and trust. An established brand with recognised authors, verified reviews and a natural link profile will always have a better chance of competing against an aggregator, especially in sensitive sectors such as finance, health or insurance.

Today, many comparison sites operate as hybrid platforms combining the roles of comparator, editorial outlet and marketplace.

Why comparison sites rank so well on Google

Comparison websites tend to have high visibility in search results for several reasons.

Large volume of content

Comparison sites typically manage large databases with thousands of products or services. This allows them to rank for many long-tail searches with clear purchase intent.

Domain authority

Many comparison sites have accumulated a large number of inbound links and digital mentions. This authority allows them to compete easily for many commercial searches.

Content focused on purchase decisions

Comparison pages address a very specific stage of the buying process: the moment when the user is weighing up their options.

How do comparison sites affect your brand's SEO?

The relationship between comparison sites and brands is complex. On one hand, they can be an additional source of traffic and sales; on the other, their activity raises the cost of leads and sales by adding an extra link to the purchase cycle. Ultimately, comparison sites are intermediaries between the brand and the end consumer, and this has direct implications for SEO:

1. Displacement in the SERPs

Comparison sites tend to have very high domain authority and large volumes of indexed content. This means they occupy the top positions for many transactional keywords, pushing brands down. If your website used to rank first for "cheap car insurance", today it has probably been overtaken by a site like Rastreator or Acierto.

2. Keyword cannibalisation and rising SEM costs

Comparison sites do not just compete in SEO, they also actively participate in Google Ads, often bidding on the same keywords as individual brands. The cost per click rises and campaign profitability suffers. Many brands find themselves having to pay for Google Ads even on their own brand name, because comparison sites are bidding on it.

3. Loss of margin and brand control

Every sale through a comparison site involves a commission. Furthermore, you lose control over how your brand is presented: the listing is generated by the comparison site according to its own criteria, and your value proposition is often reduced to a price and a few lines of description.

Comparison sites and AI-based search

The introduction of AI-based search systems is changing the way search results are presented. When a user searches to compare options for example: best CRM, Shopify vs WooCommerce, or best health insurance, AI systems can generate comparative summaries from multiple sources. In this context, comparison pages have an important advantage because they offer content structured in the form of a comparison.

Comparison sites in the AI era: a new landscape

Comparison sites have colonised virtually every consumer vertical. These are the main players you will encounter if you work on SEO in any of these sectors. Knowing who your competitor-comparators are is the first step to designing a realistic SEO strategy. Competing against Booking in the hotel sector is not the same as competing against Idealo in consumer electronics: each has its own internal algorithms, ranking criteria and commission policies.

The role of structured data

Structured data is a key element in the ranking of comparison sites. Thanks to this, content can appear in rich results and be used by artificial intelligence systems. For any company looking to compete with comparison sites, correctly implementing Schema.org is becoming increasingly important.