Website auditing
An audit you can check yourself
We measure public websites against 9 separate areas — accessibility, findability, loading performance, data protection and more — and issue a separate seal for each area that passes. Every seal links to a public verification page stating the domain, the audit date, the ruleset version and the validity period. You never have to take our word for it.
What gets measured
Accessibility (WCAG 2.2 AA)
55 success criteria, measured in a real browser — with the parts a machine cannot decide left open for a human auditor.
Data protection & cookies
Which third parties load before consent — and whether pressing “reject” actually stops them.
CO₂ & sustainability
Page weight, transfer and requests per view, the estimated CO₂ per visit, and whether the hosting runs on green energy.
Visibility in AI answers
9 rules on whether an AI system can quote your pages: clear answers, clean structure, consistent markup.
Search engine optimisation
15 rules covering titles, headings, structured data, internal linking and crawlability.
Technical setup & indexing
Whether search engines can reach, read and index the pages you want them to.
Responsive behaviour
Whether the layout holds up from a narrow phone to a wide desktop, without horizontal scrolling.
Loading performance
Loading, interaction and layout stability, measured on desktop and mobile viewports.
Software currency
Whether the software delivering the site is current or has reached end of life.
Separate areas, separate seals
A website can pass accessibility and fail on loading performance. Reporting that as one combined figure would hide exactly the information you need, so we never produce one: each area is measured, judged and sealed on its own. An area is sealed when it reaches 90 out of 100 points and control over the domain has been proven — by a DNS record or a file in the .well-known path. Without that proof no seal is issued, however good the score.
If an area falls short, you still get the full findings: what is missing, how much it weighs, and on which pages. A result covers between 10 and 150 pages, agreed in advance, and is a snapshot of the audit date.
Three levels
Bedarfsanalyse
Findings report only, no seal · fully automated
Vorprüfung
Seal possible · fully automated
Gold-Standard
Seal possible · automated plus human judgement
One exception is written into the rules: accessibility cannot be sealed at the automated level. A substantial share of the WCAG criteria cannot be decided by a machine — whether an alternative text actually describes the image is a human judgement. Tools that still certify “100 % accessible” are hiding that gap. Here such criteria stay visibly open until an auditor has ruled on them.
How we behave while measuring
The audit is passive and read-only: pages are fetched and evaluated the way a browser would. No vulnerability scanning, no port probing, no login attempts, no load testing. Every request identifies itself with a dedicated user agent and a contact reference, repeated audits of the same domain are spread out over time, and your robots.txt is respected — if it blocks the auditor, those addresses are left alone and the exclusion is stated in the result rather than passed off as missing content.
We also never ask for credentials to your CMS or server, and would decline them if offered. Only what every visitor can see is measured. The price of that boundary is that areas behind a login stay outside the scope — we say so instead of implying coverage we do not have.
Where this goes next
The full site — services, pricing, the audit procedure and the terms — is available in German. These pages carry legal effect and are published in the language in which they were written and reviewed; a machine translation would be a second, unauthorised version, so we do not publish one.