SEO errors · 85 instructions

Finding and fixing SEO errors

What does the message from your SEO check mean? Find the cause, the appropriate solution and the check afterwards.

Search for CMS or cause Which errors are corrected first?

85 instructions in 12 topics

Indexing and Robotics

If important pages are excluded or Google cannot crawl them.

Sitemaps and Crawling

Check missing sitemaps and URLs that don’t belong there.

Canonicals and Duplicates

Set the preferred URL and resolve conflicting signals.

Status codes & forwardings

Fix server errors, incorrect landing pages and detours when forwarding.

Snippets & Headlines

Improve page titles, meta descriptions and the structure of your content.

Links & Page Structure

Find defective links and make important pages more accessible.

Images and Media

Check image files, alternative texts and loading behavior.

Performance and Core Web Vitals

Improve loading time, responsiveness and layout stability.

Rendering and mobile use

Deliver content and metadata reliably and make them mobile.

Language and International SEO

Mark language versions correctly and link them together.

HTTPS and Security

Check encryption and security-relevant HTTP headers.

The solution in the appropriate context

Do you know your system or suspect the cause? Here you will find more targeted instructions.

According to CMS or shop system

All CMS instructions

By cause

All causes

What errors does your website have?

Check up to 20 URLs for free and open the appropriate instructions from the result.