SEO audit for centurion-gmbh.com
Immobilienverwaltung - Service - An- & Verkauf - Centurion GmbH
Health 68/100 (fair) · 11 pages crawled · generated 2026-08-26
Download Markdown report (feed to ChatGPT / Claude / Cursor)description
| Category | Score | Errors | Warnings | Notices |
|---|---|---|---|---|
| Agent Readiness | 73 | 0 | 10 | 11 |
| Canonical | 73 | 0 | 10 | 0 |
| Performance | 73 | 0 | 10 | 41 |
| Content | 81 | 0 | 7 | 10 |
| Duplicate | 84 | 0 | 6 | 10 |
| Images | 100 | 0 | 0 | 10 |
| Links | 100 | 0 | 0 | 11 |
| Meta Description | 100 | 0 | 0 | 10 |
| Security | 100 | 0 | 0 | 14 |
| Social | 100 | 0 | 0 | 20 |
| Structured Data | 100 | 0 | 0 | 10 |
Warnings (6 rules)
warning Control has no accessible name
Rule agent.control_no_name · Agent Readiness · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/datenschutz.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/impressum.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/kontakt.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/startseite.html — 1 button/link(s) with no text or aria-label — an agent can't target them
- https://www.centurion-gmbh.com/ueber-uns.html — 1 button/link(s) with no text or aria-label — an agent can't target them
warning Missing canonical tag
Rule canonical.missing · Canonical · 10 occurrence(s)
- https://www.centurion-gmbh.com/
- https://www.centurion-gmbh.com/datenschutz.html
- https://www.centurion-gmbh.com/impressum.html
- https://www.centurion-gmbh.com/index.php?cid=datenschutz
- https://www.centurion-gmbh.com/kontakt.html
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html
- https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/ueber-uns.html
warning Thin content (low word count)
Rule content.thin · Content · 7 occurrence(s)
- https://www.centurion-gmbh.com/ — 171 words
- https://www.centurion-gmbh.com/kontakt.html — 193 words
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 63 words
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 130 words
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 140 words
- https://www.centurion-gmbh.com/startseite.html — 171 words
- https://www.centurion-gmbh.com/ueber-uns.html — 194 words
warning Duplicate page content
Rule duplicate.content · Duplicate · 2 occurrence(s)
- https://www.centurion-gmbh.com/datenschutz.html — content shared by 2 pages: https://www.centurion-gmbh.com/index.php?cid=datenschutz
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — content shared by 2 pages: https://www.centurion-gmbh.com/datenschutz.html
warning Duplicate <title> across pages
Rule duplicate.title · Duplicate · 4 occurrence(s)
- https://www.centurion-gmbh.com/ — title shared by 2 pages: https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/datenschutz.html — title shared by 2 pages: https://www.centurion-gmbh.com/index.php?cid=datenschutz
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — title shared by 2 pages: https://www.centurion-gmbh.com/datenschutz.html
- https://www.centurion-gmbh.com/startseite.html — title shared by 2 pages: https://www.centurion-gmbh.com/
warning Render-blocking script in <head> (no defer/async)
Rule perf.render_blocking · Performance · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/datenschutz.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/impressum.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/kontakt.html — 3 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/startseite.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
- https://www.centurion-gmbh.com/ueber-uns.html — 1 render-blocking <script> in <head> (add defer/async or use type=module)
Notices (18 rules)
notice No llms.txt for AI agents
Rule agent.llms_txt_missing · Agent Readiness · 1 occurrence(s)
- https://www.centurion-gmbh.com/ — no llms.txt found at the site root — add one so AI agents get a curated site summary
notice No main landmark for AI agents
Rule agent.no_main_landmark · Agent Readiness · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/datenschutz.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/impressum.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/kontakt.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/startseite.html — add a <main> element (or role=main) around the primary content
- https://www.centurion-gmbh.com/ueber-uns.html — add a <main> element (or role=main) around the primary content
notice Duplicate meta description across pages
Rule duplicate.meta_desc · Duplicate · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — meta description shared by 10 pages: https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html, https://www.centurion-gmbh.com/ueber-uns.html
- https://www.centurion-gmbh.com/datenschutz.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/impressum.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/kontakt.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/startseite.html, https://www.centurion-gmbh.com/ueber-uns.html
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/startseite.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/ueber-uns.html
- https://www.centurion-gmbh.com/ueber-uns.html — meta description shared by 10 pages: https://www.centurion-gmbh.com/, https://www.centurion-gmbh.com/kontakt.html, https://www.centurion-gmbh.com/startseite.html
notice Likely hero image lacks fetchpriority=high
Rule images.hero_no_fetchpriority · Performance · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/datenschutz.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/impressum.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/kontakt.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/startseite.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
- https://www.centurion-gmbh.com/ueber-uns.html — the likely hero/LCP image (logo.png) has no fetchpriority="high" — adding it tells the browser to fetch the hero earlier in the waterfall, reducing Largest Contentful Paint. This is a low-severity nudge; verify the flagged image is actually your LCP element.
notice Images without width/height (layout shift / CLS)
Rule images.missing_dimensions · Images · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 9 of 9 images without width/height
- https://www.centurion-gmbh.com/datenschutz.html — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/impressum.html — 3 of 3 images without width/height
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/kontakt.html — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 2 of 2 images without width/height
- https://www.centurion-gmbh.com/startseite.html — 9 of 9 images without width/height
- https://www.centurion-gmbh.com/ueber-uns.html — 2 of 2 images without width/height
notice Internal link has no anchor text / accessible name
Rule links.no_anchor_text · Links · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/datenschutz.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/impressum.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/kontakt.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/startseite.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
- https://www.centurion-gmbh.com/ueber-uns.html — 1 internal link(s) have no anchor text, aria-label, or image alt — they pass no keyword signal and are unusable to screen readers. Add descriptive text or an aria-label.
notice Page has only one internal inlink (fragile crawl path)
Rule links.single_inlink · Links · 1 occurrence(s)
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — only one internal link points here — if that source changes, this page becomes an orphan. Add more contextual internal links to strengthen the crawl path.
notice Legacy <meta name=keywords> tag present (Google ignores it)
Rule meta.keywords_present · Content · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/datenschutz.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/impressum.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/kontakt.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/startseite.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
- https://www.centurion-gmbh.com/ueber-uns.html — a <meta name="keywords"> tag is present — Google has ignored it since 2009; remove it to cut template debt
notice Meta description too short
Rule meta_desc.too_short · Meta Description · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 11 chars
- https://www.centurion-gmbh.com/datenschutz.html — 11 chars
- https://www.centurion-gmbh.com/impressum.html — 11 chars
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 11 chars
- https://www.centurion-gmbh.com/kontakt.html — 11 chars
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 11 chars
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 11 chars
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 11 chars
- https://www.centurion-gmbh.com/startseite.html — 11 chars
- https://www.centurion-gmbh.com/ueber-uns.html — 11 chars
notice Missing Open Graph tags
Rule og.missing · Social · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — og:title, og:description, og:image
- https://www.centurion-gmbh.com/datenschutz.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/impressum.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — og:title, og:description, og:image
- https://www.centurion-gmbh.com/kontakt.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/startseite.html — og:title, og:description, og:image
- https://www.centurion-gmbh.com/ueber-uns.html — og:title, og:description, og:image
notice Legacy image format (jpg/png/gif) with no next-gen fallback
Rule perf.images_legacy_format · Performance · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/datenschutz.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/impressum.html — 3 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/kontakt.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/startseite.html — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
- https://www.centurion-gmbh.com/ueber-uns.html — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen <picture> fallback. Serve WebP or AVIF (with a <picture> typed <source>) to cut image transfer weight and improve LCP.
notice Large HTML document
Rule perf.large_html · Performance · 1 occurrence(s)
notice No ETag header (no conditional GET for unchanged pages)
Rule perf.no_etag · Performance · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/datenschutz.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/impressum.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/kontakt.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/startseite.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
- https://www.centurion-gmbh.com/ueber-uns.html — the response carries no ETag header — without an ETag (or Last-Modified) there is no cache-revalidation mechanism, so crawlers re-download the full body every visit. Emit an ETag (a content hash) to enable conditional If-None-Match requests.
notice No Last-Modified header (no conditional GET for unchanged pages)
Rule perf.no_last_modified · Performance · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/datenschutz.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/impressum.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/kontakt.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/startseite.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
- https://www.centurion-gmbh.com/ueber-uns.html — the response carries no Last-Modified header — Googlebot can't send an If-Modified-Since request, so it re-downloads the full page body on every crawl even when nothing changed. Emit Last-Modified (or an ETag) on stable pages to enable 304 Not Modified responses.
notice No structured data detected
Rule schema.none · Structured Data · 10 occurrence(s)
- https://www.centurion-gmbh.com/
- https://www.centurion-gmbh.com/datenschutz.html
- https://www.centurion-gmbh.com/impressum.html
- https://www.centurion-gmbh.com/index.php?cid=datenschutz
- https://www.centurion-gmbh.com/kontakt.html
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html
- https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/ueber-uns.html
notice Missing recommended security headers
Rule security.missing_headers · Security · 10 occurrence(s)
- https://www.centurion-gmbh.com/ — X-Content-Type-Options, HSTS, CSP
- https://www.centurion-gmbh.com/datenschutz.html — X-Content-Type-Options, HSTS, CSP
- https://www.centurion-gmbh.com/impressum.html — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/kontakt.html — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html — X-Content-Type-Options, HSTS, CSP
- https://www.centurion-gmbh.com/startseite.html — HSTS, CSP, X-Content-Type-Options
- https://www.centurion-gmbh.com/ueber-uns.html — HSTS, CSP, X-Content-Type-Options
notice target=_blank link without rel=noopener (tab-napping)
Rule security.unsafe_cross_origin_links · Security · 4 occurrence(s)
- https://www.centurion-gmbh.com/datenschutz.html — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.centurion-gmbh.com/impressum.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.centurion-gmbh.com/index.php?cid=datenschutz — 7 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
- https://www.centurion-gmbh.com/kontakt.html — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer".
notice Missing Twitter Card tag
Rule twitter.missing · Social · 10 occurrence(s)
- https://www.centurion-gmbh.com/
- https://www.centurion-gmbh.com/datenschutz.html
- https://www.centurion-gmbh.com/impressum.html
- https://www.centurion-gmbh.com/index.php?cid=datenschutz
- https://www.centurion-gmbh.com/kontakt.html
- https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html
- https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html
- https://www.centurion-gmbh.com/leistungen/technische-leistungen.html
- https://www.centurion-gmbh.com/startseite.html
- https://www.centurion-gmbh.com/ueber-uns.html
| URL | Status | Indexable | Words | In-links |
|---|---|---|---|---|
| https://www.centurion-gmbh.com/ Immobilienverwaltung - Service - An- & Verkauf - Centurion GmbH |
200 | yes | 171 | 10 |
| https://www.centurion-gmbh.com/datenschutz.html Datenschutzerklärung - Centurion GmbH |
200 | yes | 5045 | 10 |
| https://www.centurion-gmbh.com/impressum.html Impressum - Centurion GmbH |
200 | yes | 377 | 10 |
| https://www.centurion-gmbh.com/kontakt.html Kontakt - Centurion GmbH |
200 | yes | 193 | 10 |
| https://www.centurion-gmbh.com/leistungen/an-und-verkauf.html An- & Verkauf - Centurion GmbH |
200 | yes | 63 | 10 |
| https://www.centurion-gmbh.com/leistungen/kaufmaennische-leistungen.html Kaufmännische Leistungen - Centurion GmbH |
200 | yes | 130 | 10 |
| https://www.centurion-gmbh.com/leistungen/technische-leistungen.html Technische Leistungen - Centurion GmbH |
200 | yes | 140 | 10 |
| https://www.centurion-gmbh.com/startseite.html Immobilienverwaltung - Service - An- & Verkauf - Centurion GmbH |
200 | yes | 171 | 10 |
| https://www.centurion-gmbh.com/ueber-uns.html Über uns - Centurion GmbH |
200 | yes | 194 | 10 |
| https://www.centurion-gmbh.com/index.php?cid=datenschutz Datenschutzerklärung - Centurion GmbH |
200 | yes | 5045 | 1 |
| https://www.centurion-gmbh.com/files/verordnung-der-bundesregierung.pdf | 200 | no | 0 | 2 |
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