Seitenreport: Website quality Measure and improve – since 2007
Seitenreport is a product of Matthias Gläßner IT-Lösungen Since 2007, it has evolved from a classic SEO and website analysis tool to a platform for holistic website quality. SEO and organic visibility remain a central pillar.
The analysis combines SEO with technology, performance, accessibility, security, data protection, content structure and modern visibility. Individual test signals result in prioritized finding and concrete measures for companies, agencies, developers and website operators.
Share SEO, technology and other quality signals.
Prioritized by impact & effort.
For teams, projects and audits. Stable, traceable, without buzzwords.
1. What Seitenreport does
Seitenreport does not only look at websites from an SEO point of view. The analysis combines SEO & visibility, technology & crawling, performance, content & structure, accessibility, security, data protection & tracking and modern visibility.
A website can have good rankings and still have technical, performance, accessibility or privacy issues. Seitenreport therefore combines individual signals into an overall picture and shows which problems should be dealt with first.
Single URL check for quick diagnoses, debugging and targeted exams in everyday life.
Ideal for: Dev/QA, content checks, fast hypotheses
Crawl of entire projects (depending on the plan) – bundled finds, prioritization and to-dos in the context of the entire website.
Ideal for: Audits, relaunches, monitoring, agency reports
- Full analysis instead of pure SEO individual checks
- Multiple quality dimensions in an overall picture
- Multipage crawl instead of isolated single URL
- Priorities instead of confusing raw data
- affected URLs and concrete next steps
- Benchmarking for classifying measured values
- Recrawls and monitoring for changes over time
- Practically developed from website, SEO and development projects since 2007
- Prioritized Findings with affected URLs, causes and concrete next steps
- Recrawls For continuous testing and comparability
- Exports (PDF/CSV) – optional White label and API connection
- Data protectionGDPR-oriented, respectful crawl & fair use
2. How Seitenreport understands website quality
Website quality does not arise from a single metric. It results from the interaction of technical, content-related and user-related factors.
The model structures the analysis in quality dimensions, which are tested individually and then evaluated in the context of the entire website.
Indexability, snippets, internal signals and organic findability.
Status codes, redirects, canonicals, sitemaps and crawl structure.
Charging behavior, resources, signals close to core web hospitals and technical brakes.
Headings, legibility, semantic order and content findability.
Test signals for accessibility, alternative text and usable structure.
HTTPS, security headers and technical risks in the visible website context.
Information on tracking, consent-related signals and data protection-relevant anomalies.
Structured information and readability for new search and response systems.
3. What the platform stands for
SEO, technology, performance and other quality dimensions are not considered as independent individual values, but in the context of the entire website.
No “score” magic without explanation. Finding + Cause + concrete next steps.
Fast analysis, clear prioritization, export/transfer without friction.
Comprehensible checks instead of black box – so that teams can implement cleanly.
Respectful crawl, meaningful limits, protection against abuse – stability for everyone.
4. Why Seitenreport
Many analysis tools provide individual measured values or large amounts of raw technical data. Seitenreport combines the relevant signals into a working image: What is critical, which areas are affected and which measures should be implemented first?
The focus is on an understandable evaluation of website quality with concrete next steps for implementation, prioritization and control.
- Identifying problems and rank by priority.
- Understanding and explaining problems – for stakeholders, customers and teams.
- Implementing measures – with to-dos, exports and clear next steps.
- Track changes – through recrawls and monitoring over time.
5. Current further development
Seitenreport is gradually being developed from a classical analysis platform into a coherent system for website quality. Audits, benchmarks, monitoring, specialised audits and workflows are more closely linked.
Comparative values according to CMS, country, website type and quality dimension help to classify individual measured values in context.
Accessibility, core web vitals, data protection/tracking, relaunch QA and further focused checks deepen individual quality areas.
The SEO tools section answers targeted questions; the full analysis connects the results in the context of the entire website.
Check → prioritize → improve → recrawl → monitor.
6. History and Timeline
Seitenreport was launched in 2007 and developed over the years from an early website analysis tool to an extensive German-language SEO portal with a TYPO3-based portal structure, community, content and analysis areas. Public mentions since the early 2010s show that Seitenreport has been perceived for many years as a relevant tool for website analysis, SEO evaluation and technical optimization. Today’s platform builds on this and expands the view from SEO and website analysis to measurable website quality.
For about three years, Seitenreport was continuously maintained, technically modernized and rebuilt in central areas. This included regular TYPO3 updates, structural revisions and the step-by-step development of the analysis logic. The classic website check resulted in quick analysis, multipage crawls, 238 automatic checks per URL, prioritized finds, reports, recrawls, PDF/CSV exports and a significantly expanded tool area with around 38 independent SEO tools. In addition, benchmarks, monitoring workflows and specialized audits for accessibility, performance, data protection/tracking and other quality areas were established. In this way, Seitenreport developed beyond the classic SEO check into a platform that jointly evaluates different dimensions of website quality. Current improvements to the SEO audit can be found in the Changelog.
Seitenreport still holds relevant organic rankings on Google today, including repeated top 1 to top 3 rankings for selected search terms around SEO check, website analysis and SEO analysis.
Today, Seitenreport combines its growing SEO expertise with a broader assessment of website quality. SEO and organic visibility remain a central pillar; they are complemented by technology, crawling, performance, accessibility, data protection/tracking, security, content structure, benchmarks and monitoring. The platform is geared towards B2B use, audit workflows, agencies, companies, developers and website operators.
In this phase, the existing portal was continued to be operated, maintained and technically maintained. At the same time, it became increasingly apparent that older evaluation approaches and historical SEO signals such as PageRank, DMOZ or classic single URL scores no longer fit into modern website analysis. This development formed the basis for the subsequent comprehensive reconstruction.
Seitenreport has been mentioned in several public tool overviews and practical tips, including in the context of free website analysis tools, SEO analysis, loading times, subpage analysis and suggestions for improvement for websites. This shows that Seitenreport was still perceived as a relevant German-language analysis tool many years after its launch.
In addition to the analytics function, Seitenreport grew into an extensive portal with specialist articles, forum, knowledge areas, user accounts and SEO-related content. Seitenreport content was referenced in technical and university contexts, and the portal was identified in link lists, tool overviews and web design/SEO contexts.
In 2011, Seitenreport was significantly further developed. Public forum contributions already refer to an upcoming version 3 of the analysis. In this phase, the portal gained substance as an SEO forum, analytics platform and knowledge area.
Already in 2010, Seitenreport was mentioned in public comparisons of German-language website evaluation tools alongside offers such as side value, side test, qualidator and teeex. Seitenreport was described as a clear analysis tool with more than 40 individual tests.
Start as an early web application for website analysis and SEO evaluation. From the outset, the focus has been on fast analytics, comprehensible results and practical benefits for website operators, developers and online marketers.
Note: “50,000+ historical registrations” refers to user accounts from the community phase.
7. Operator & Professional Management
Seitenreport is a product of Matthias Gläßner IT-Lösungen and has been developed and operated in Germany since 2007. This means that the platform is backed by a clearly named, responsible provider for audits, reports, white label solutions and individual analysis workflows.
The owner and technical management shall be: Matthias Gläßner. As a senior web and software architect, he brings over 20 years of experience in web development, software architecture, website analysis and technical SEO.
Today’s website quality perspective has emerged from this practice: In real projects it is regularly shown that sustainable website quality does not depend solely on SEO, but on the interplay of technology, visibility, performance, usability and clean implementation.
Seitenreport did not arise from a short-term marketing project, but from years of practical work on websites, relaunches, technical audits and SEO problems that occur again and again in real projects.
The platform is thus deliberately founder-led: short paths, technical depth and decisions from direct project practice instead of pure marketing or pitch deck thinking.
Questions about reports, white label, API or an individual setup?
8. Public mentions
Seitenreport has been mentioned in various public sources, specialist articles and documents. This includes, among other things, business-related, academic and media contexts. These mentions are not automatic customer references or partnerships, but they do show that Seitenreport is perceived externally and named in relevant contexts.
- EU/Europe context: public naming of Seitenreport as a tool for website analysis.
- IHK context: Mention related to online marketing, website quality or SEO.
- Higher education/specialist context: Use or reference in articles, documents or educational materials.
The references page documents these mentions transparently, directly linked and without exaggeration.
9. Next step
Start with a free analysis and check which quality areas of your website currently offer the most important leverage. For larger projects: multipage analysis, prioritized measures and regular recrawls.
238 automatic checks per URL, SEO and website analysis, clear priorities and concrete next steps.