Kolibri Online GmbH
Unclaimed profileAgentur für internationales Content Marketing
Lokalisierungen & Content Marketing ✓ SEO-Redaktion & muttersprachliche Übersetzungen in 20+ Sprachen → Content the world likes!
Web health
50/100
measured 20/10/2026
Issues found
29
on their own site
Reviews
0
from clients on Dr Urls
What Dr Urls found on kolibri-online.com
From the audit of their public home page on 20/10/2026, worst first. Each links to what it means and how it is fixed.
- highMissing landmark elements
WCAG 1.3.1 requires that page structure is programmatically determinable.
- highSlow server response time (TTFB > 3s)
Page speed is a confirmed Google ranking factor, and TTFB is the foundational component.
- highStructured data has validation errors
Invalid structured data is completely ignored by search engines — it provides no benefit and the page will not be eligible for rich results.
- highTime to First Byte (TTFB) is slow
TTFB directly impacts all subsequent loading metrics.
- mediumCache-Control header missing
Proper caching prevents browsers from re-downloading unchanged resources, dramatically improving repeat visit performance.
- mediumDuplicate ID attributes found
Duplicate IDs cause label elements, aria-labelledby, aria-describedby, and fragment link targets to associate with the wrong element.
- mediumImage missing alt attribute
Image alt text is the primary way search engines understand image content.
- mediumImages missing width and height attributes
Missing image dimensions are the leading cause of Cumulative Layout Shift (CLS), a Core Web Vital and ranking factor.
- mediumLink has empty anchor text
Anchor text is one of the strongest signals search engines use to understand the content of the linked page.
- mediumMissing skip-to-content navigation link
WCAG 2.4.1 requires a way to bypass blocks repeated on every page.
- mediumURL has excessive query parameters
Excessive query parameters multiply the number of URLs search engines must crawl, wasting crawl budget.
- lowCSS files are not minified
Unminified CSS files are larger than necessary, increasing download time and delaying rendering.
And 9 more. 6 security findings are not listed on this public page; the site's owner sees them in a full audit after claiming it.
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Figures on this page come from Dr Urls crawling kolibri-online.com's public pages. Nothing here is taken from third-party listings.