SEO agency: be found when customers search

  • Analysis, strategy and implementation
  • In-house developers and content team
  • Case studies with sourced figures
SEO enquiry
4.9
Based on 33 reviews
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Logo with red and orange triangles, text: Awin Certified Agency 2025.
SISTRIX certified agency

We do the work ourselves

Our team includes two full-stack developers and a content team. Technical changes, texts and structured data therefore do not remain recommendations on paper. If you work with an agency or have your own developers, we deliver tasks with URL, finding, goal and acceptance criterion.

Figures with source and dates

Before we start, we record the baseline: visibility, rankings, clicks and enquiries. Our work is measured against it. The results in the next section state their source and period.

Google and AI search together

AI systems such as ChatGPT, Gemini and Claude rely on search indexes and on your website. What search engines do not capture is usually missing from AI answers too. That is why we treat the two as one: classic search and GEO.

 Results from client projects 

How our clients’ visibility and rankings have developed

Five examples from ongoing projects. We name ROMA, the other four are anonymised. The figures come from SISTRIX for Germany, as of 28 September 2026. The SISTRIX Visibility Index expresses in a single figure how well a website is found on Google across a large number of search terms. We do not publish our clients’ absolute click or enquiry figures. The case studies are available in German only.

  • ROMA, manufacturer of roller shutters and sun protection: we have managed SEO and content since April 2025, following an editorial plan since September 2025. In the twelve months after that, the Visibility Index rose from 0.41 to 1.08, and the number of keywords in the top 10 from 2,227 to 9,085. The rise in top 10 rankings began at the end of January 2026, around four months after the editorial plan started. In mid-February 2026 the local dealer and city pages went live. ROMA case study (in German)
  • Company with several specialist departments: we have worked for the client since 2021. Since the relaunch of the website in December 2025, visibility has risen by 160 per cent, to the highest value since measurement began. For two of the most searched terms in its specialist areas, the website ranks first on Google (as of 7 October 2026). Case study (in German)
  • Regional service provider: started in September 2021. Visibility increased by 119 per cent in the last twelve months. Five times as many keywords rank in the top 10 as two years earlier. Case study (in German)
  • Manufacturer with several online shops: since May 2022 the visibility of the main domain has increased 4.5-fold. More than three times as many keywords rank in the top 10 as in May 2022. Case study (in German)
  • Nationwide organisation: we have worked for the organisation since August 2020. 2.5 times as many keywords rank in the top 10 as at the start. Case study (in German)

“Chapeau to Ralph’s team! Well-founded SEO, effective GEO. The ‘superintelligence’ for our website comes from the Rhine. More precisely: from Rheinwunder!”

Tobias Löhner, Head of Marketing, ROMA KG (translated from German)

Charts, competitor comparisons and our contribution to each project: see our case studies (in German).

 Where you stand today 

Typical starting points and what we do first

This, or something like it, is how companies describe their situation when they look for an SEO agency. What we do first in each case:

  • “Our agency has been sending reports for years, but rankings and traffic are not moving.” First we take an independent look from outside. An SEO analysis shows what is holding the website back, technically and in terms of content, and what has been missing so far. You receive a list using a traffic-light system: critical, important, can wait.
  • “A smaller competitor ranks ahead of us for our most important search terms.” Company size alone is not what counts on Google. First we compare page by page what the competitor does differently: search intent, content, internal linking and backlinks. This shows which pages need revising and which are missing. We record it in a keyword analysis with content strategy.
  • “Large portals occupy all the top positions for our topics.” You will rarely outrank the portals for the broad term, but you can for many specific questions. So first we identify the questions where expertise counts for more than size. A regional service provider we work for is more visible on Google than two nationwide competitors. Large portals remain many times more visible.
  • “We have been losing visibility since a Google update.” First we check whether the update is the cause: timing, affected pages and search queries in Search Console, plus the technical set-up and competitors. In 2025 a company with several specialist departments that we work for, with a website that was showing its age, lost considerable visibility after a Google update. Since the relaunch and the revision of the most important pages for each specialist department, the Visibility Index has been higher than ever before.
  • “We are planning a relaunch or changing our domain.” Then it pays to involve us early. A requirements specification, redirect plan, staging check and monitoring reduce the risk of losing rankings in the move. More under SEO relaunch support.
  • “We have done SEO ourselves so far and are not getting any further.” First we clarify where your team needs support. We also work as a sounding board: with SEO consulting, individual analyses and training.
  • “Our rankings are good, but clicks are falling.” For many informational questions, Google’s AI Overviews already answer part of the question in the search results. First we check which of your search queries are affected and whether your pages appear there as a source. More under AI SEO.
 Our SEO services 
Person at a desk looking at a chart on a monitor in an office.

You can start with a single service or have us manage SEO on an ongoing basis.

Accessibility

We test your website, deliver an action plan, align SEO and accessibility and advise your developers on implementation. About the accessibility audit

E-commerce SEO

SEO for online shops: category and product pages, filters and structured product data. About e-commerce SEO

Link building

Link profile analysis, outreach and article placements with suitable publishers. For more visibility in Google and in AI answers. About link building

Local SEO

Google Business Profile, location pages, reviews and consistent business data for more visibility in local search. About local SEO

SEO audit

Technical set-up, content and competitors reviewed, with an action list using a traffic-light system. About the SEO audit

SEO consulting

Advice for your team, for more visibility and more organic revenue. About SEO consulting

SEO relaunch support

Requirements catalogue, redirect plan, staging check and monitoring, so that rankings and AI visibility survive the relaunch. About relaunch support

Technical SEO

Crawling, indexing, Core Web Vitals, JavaScript rendering, structured data and log file analysis. Implemented by our own developers. About technical SEO

WordPress SEO

Loading time, plugins, structured data, multilingual setups and content. Implemented directly in the system, tested on staging. About WordPress SEO



 Initial assessment 

Which of your pages could achieve more?

In an initial consultation we look at your website together and tell you where we would start.


SEO enquiry
1

Initial consultation and goals

You describe your situation, how the website has developed so far and what you suspect. Together we define how we measure success: more enquiries, more organic revenue, overtaking certain competitors or less dependence on paid ads.

2

Baseline

We receive access to Search Console and web analytics, crawl the website and record the baseline, also in comparison with your competitors.

3

SEO analysis

Every website is different. The SEO analysis therefore follows your goals and your system. The result is an action list using a traffic-light system, with the affected pages.

4

Keyword analysis

We determine what your target audience searches for, how often and with what intent, and assign one page to each topic. This results in the content strategy and the editorial plan. More about keyword analysis.

5

Roadmap

We present the results to you and agree the priorities together. Depending on what is needed, this includes technical work, content, link building or local SEO.

6

Implementation and measurement

We carry out the work or support your team in doing so. We record what has been changed and measure the effect against the baseline. In regular meetings we discuss the status and the next steps.

Can you show examples of your work?

Yes. We name ROMA, further projects are anonymised. The SEO case studies describe the starting point, our contribution and the result in figures. See our case studies (in German)

What results do you expect in what timeframe, and how do you measure?

We give an assessment once the baseline has been recorded, and we do not promise a ranking. We measure against the baseline: visibility and rankings in SISTRIX, clicks and impressions in Search Console, enquiries or revenue in your web analytics.

Do you have experience in our industry?

We work for more than 100 clients from more than 20 industries. They include industry and engineering, building components and trades, brand manufacturers and online shops, clinics, pharmaceuticals and medical publishers, property, finance and law, management consulting and software, professional training, tourism and hospitality, car dealerships, culture and media, as well as associations, churches and non-profit organisations. You will find examples with figures in our case studies (in German).

Do you have experience with international websites?

Yes. For ROMA we reviewed the international website roma.eu in an SEO audit. For a service provider for industry and logistics with a website in five languages, we manage SEO and paid search. For a manufacturer with several online shops we created the redirect plan for the international language versions. Our clients also include companies from the United Kingdom. Linking the language versions via hreflang is part of our technical checks.

How long have you been in business?

Rheinwunder was founded in Bonn in 2012 and has more than 20 employees today. The managing directors are Ralph Grundmann and Olga Grundmann. Rheinwunder is a SISTRIX-certified agency and a Google Partner Premier 2026. We have worked for several clients since 2020 and 2021. More under Rheinwunder in facts.

How do we communicate, and will we hear about every change?

You receive recommendations as a list with the affected pages, the finding and the goal. We agree together how often we talk, for example in a status call every two weeks. In addition, once a year there is an annual review with a look back and a roadmap. When we work on WordPress websites, changes are first made in a test environment, and you receive a change log showing before and after.

 What you can expect 

What SEO can and cannot do

SEO is not a switch you flip. We discuss these points before we start, so that expectations are realistic:

  • No guarantee: nobody can promise a particular ranking, and neither can we. Google decides the order of the results.
  • SEO takes time: the effect usually shows in months, not in days. If you need enquiries in the next few weeks, you will get there faster with paid search (SEA). The two can be combined. For a company with several specialist departments that we work for, the search terms from the campaigns feed into content planning.
  • No effect without implementation: an analysis alone changes nothing. Results come when the recommendations are implemented, by us or by your team. If time or budget is tight, we advise a smaller scope with clear priorities.
  • The curve does not rise evenly: on the way up, the regional service provider saw two setbacks, in winter 2024/25 and in spring 2026. The first had been made up by July 2025, the second after seven weeks.
  • Rankings are not an end in themselves: a top position only helps if it turns into visits and enquiries. That is why we measure clicks and enquiries as well as rankings.
 Let us talk about your visibility on Google 

Where does your website stand in search?

In an initial conversation we clarify where you stand today, which goals you are pursuing and how we can support you with search engine optimisation. No obligation and with an honest assessment.

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SISTRIX certified agency
4.9
Based on 33 reviews
SEO enquiry
Monique Schumacher
Monique SchumacherTeam Lead Content ManagementCall: 0228 433 994 14

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