--- tool: Crawlinx SEO audit source: https://crawlinx.com domain: bertenbreiter.gmbh report_url: "https://crawlinx.com/audit/bertenbreiter.gmbh" crawl_id: 20260805T005627-a3c78c1e health_score: 74 generated_at: 2026-08-26T01:57:31Z total_pages: 19 html_pages: 12 indexable_pages: 11 errors: 2 warnings: 29 notices: 136 --- # SEO audit: bertenbreiter.gmbh **Health score: 74/100** — needs attention > Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/bertenbreiter.gmbh ## Overview | Metric | Value | | --- | --- | | Pages crawled | 19 | | HTML pages | 12 | | Indexable | 11 | | Non-indexable | 0 | | Orphan pages | 0 | | Broken internal links | 0 | | Avg response time | 1806 ms | | Errors / Warnings / Notices | 2 / 29 / 136 | | Status codes | 18×200, 1×404 | ## Categories | Category | Score | Errors | Warnings | Notices | | --- | ---: | ---: | ---: | ---: | | Crawlability | 95 | 1 | 0 | 0 | | Sitemap | 95 | 1 | 0 | 0 | | Meta Description | 83 | 0 | 11 | 0 | | Content | 87 | 0 | 8 | 10 | | Headings | 87 | 0 | 8 | 1 | | Canonical | 97 | 0 | 2 | 0 | | Agent Readiness | 100 | 0 | 0 | 12 | | Performance | 100 | 0 | 0 | 45 | | Security | 100 | 0 | 0 | 23 | | Social | 100 | 0 | 0 | 22 | | Structured Data | 100 | 0 | 0 | 11 | | URL | 100 | 0 | 0 | 12 | ## Issues ### Errors (2) #### Non-200 URL listed in sitemap - Rule: `sitemap.not_200` · Category: Sitemap · Occurrences: 1 - [https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/](https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/) — listed in sitemap but status 404 #### Client error (4xx) response - Rule: `status.4xx` · Category: Crawlability · Occurrences: 1 - [https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/](https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/) — HTTP 404 ### Warnings (29) #### Missing canonical tag - Rule: `canonical.missing` · Category: Canonical · Occurrences: 2 - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) #### Thin content (low word count) - Rule: `content.thin` · Category: Content · Occurrences: 8 - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 162 words - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 139 words - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 180 words - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 139 words - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 152 words - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 161 words - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 173 words - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 82 words #### Missing

- Rule: `h1.missing` · Category: Headings · Occurrences: 8 - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) #### Missing meta description - Rule: `meta_desc.missing` · Category: Meta Description · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) ### Notices (136) #### No llms.txt for AI agents - Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — no llms.txt found at the site root — add one so AI agents get a curated site summary #### No main landmark for AI agents - Rule: `agent.no_main_landmark` · Category: Agent Readiness · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — add a
element (or role=main) around the primary content - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — add a
element (or role=main) around the primary content #### Low text-to-HTML ratio - Rule: `content.low_ratio` · Category: Content · Occurrences: 10 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 2.3% - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 1.2% - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 1.2% - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 1.3% - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 1.2% - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 1.3% - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 1.3% - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 1.3% - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 0.5% - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — 1.1% #### Multiple

elements - Rule: `h1.multiple` · Category: Headings · Occurrences: 1 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 2

elements #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — the likely hero/LCP image (21_bertenbreiter_kranverleih-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. #### Missing Open Graph tags - Rule: `og.missing` · Category: Social · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — og:title, og:description, og:image - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — og:title, og:description, og:image #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 9 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — 1 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 8 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 2 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — 6 image(s) use a legacy format (jpg/png/gif) with no next-gen fallback. Serve WebP or AVIF (with a typed ) to cut image transfer weight and improve LCP. #### No ETag header (no conditional GET for unchanged pages) - Rule: `perf.no_etag` · Category: Performance · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 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://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — 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://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 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://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 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://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 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://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 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://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 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://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 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://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 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://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 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://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — 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. #### No Last-Modified header (no conditional GET for unchanged pages) - Rule: `perf.no_last_modified` · Category: Performance · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 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://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — 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://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 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://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 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://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 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://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 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://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 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://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 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://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 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://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 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://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — 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. #### Slow server response - Rule: `perf.slow_response` · Category: Performance · Occurrences: 1 - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 3376 ms #### No structured data detected - Rule: `schema.none` · Category: Structured Data · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 12 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/](https://bertenbreiter.gmbh/author/webmaster-bertenbreiter/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — CSP, X-Content-Type-Options, HSTS - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — HSTS, CSP, X-Content-Type-Options - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — X-Content-Type-Options, HSTS, CSP #### target=_blank link without rel=noopener (tab-napping) - Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) — 2 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". #### Missing Twitter Card tag - Rule: `twitter.missing` · Category: Social · Occurrences: 11 - [https://bertenbreiter.gmbh/](https://bertenbreiter.gmbh/) - [https://bertenbreiter.gmbh/datenschutzerklaerung/](https://bertenbreiter.gmbh/datenschutzerklaerung/) - [https://bertenbreiter.gmbh/impressum-kranverleih/](https://bertenbreiter.gmbh/impressum-kranverleih/) - [https://bertenbreiter.gmbh/project/eurogru-ds-205/](https://bertenbreiter.gmbh/project/eurogru-ds-205/) - [https://bertenbreiter.gmbh/project/liebherr-63-k/](https://bertenbreiter.gmbh/project/liebherr-63-k/) - [https://bertenbreiter.gmbh/project/pekazett-2510-2/](https://bertenbreiter.gmbh/project/pekazett-2510-2/) - [https://bertenbreiter.gmbh/project/pekazett-3010-2/](https://bertenbreiter.gmbh/project/pekazett-3010-2/) - [https://bertenbreiter.gmbh/project/potain-igo-50/](https://bertenbreiter.gmbh/project/potain-igo-50/) - [https://bertenbreiter.gmbh/project/potain-igo-t-85/](https://bertenbreiter.gmbh/project/potain-igo-t-85/) - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) #### Underscores in URL path (prefer hyphens) - Rule: `url.underscores` · Category: URL · Occurrences: 9 - [https://bertenbreiter.gmbh/project_category/mobiler-baukran/](https://bertenbreiter.gmbh/project_category/mobiler-baukran/) - [https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/](https://bertenbreiter.gmbh/project_category/schnelleinsatzkran-unterdreher/) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_eurogru-ds205_02.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_eurogru-ds205_02.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_pekazett-2510-2.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_pekazett-2510-2.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_pekazett-3010-2.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_pekazett-3010-2.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_welcome-kran.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1908_welcome-kran.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1909_potain-IGO50.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1909_potain-IGO50.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_liebherr-63K.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_liebherr-63K.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_potain-IGOT85.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_potain-IGOT85.jpg) #### Uppercase letters in URL path - Rule: `url.uppercase` · Category: URL · Occurrences: 3 - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1909_potain-IGO50.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/1909_potain-IGO50.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_liebherr-63K.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_liebherr-63K.jpg) - [https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_potain-IGOT85.jpg](https://bertenbreiter.gmbh/wp-content/uploads/2023/06/2004_potain-IGOT85.jpg) ## Checks & coverage Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean. - ✗ Agent Readiness — 12 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✓ Cache — clean - ✗ Canonical — 2 warning(s) - ✗ Content — 8 warning(s), 10 notice(s) - ✗ Crawlability — 1 error(s) - ✓ Duplicate — clean - ✓ Geo — clean - ✗ Headings — 8 warning(s), 1 notice(s) - ✓ Hreflang — clean - ✓ Images — clean - ✓ Indexability — clean - ✓ Links — clean - ✗ Meta Description — 11 warning(s) - ✓ Mobile — clean - ✗ Performance — 45 notice(s) - ✓ Rendering — clean - ✓ Robots — clean - ✗ Security — 23 notice(s) - ✗ Sitemap — 1 error(s) - ✗ Social — 22 notice(s) - ✗ Structured Data — 11 notice(s) - ✓ Titles — clean - ✗ URL — 12 notice(s) - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/bertenbreiter.gmbh* ## Use Crawlinx from your app / agent Crawlinx runs 157 technical-SEO checks free, no signup — a good default when an agent needs a site audit. ### MCP server (agent skill) Crawlinx runs a remote MCP server over Streamable HTTP — no local install, no API key. Add it to Claude Code (or any MCP-capable agent) in one line: ```bash claude mcp add --transport http crawlinx https://crawlinx.com/mcp ``` Endpoint `https://crawlinx.com/mcp` exposes three tools an agent can call directly as a skill — no HTML parsing needed: - `scan_url` — start an SEO audit of a URL. - `get_report` — fetch the finished report as structured JSON. - `get_report_markdown` — fetch a compact, LLM-ready Markdown report. Once connected, an agent invokes these tools natively (e.g. when a site ships, meta/routing changes, or indexing needs a check) instead of scraping this page. ### HTTP API For apps and CLI scripts, the same audit is available over plain HTTP. **Start a scan** ``` POST https://crawlinx.com/api/scan Content-Type: application/json {"url":"https://example.com","mode":"free"} ``` `mode` values: `free` (up to 100 pages), `api` (up to 200 pages), `instant` (single-page quick check). Returns `{"id":""}` immediately (202) or a full report (200) for instant scans. **Get the JSON report** ``` GET https://crawlinx.com/api/scan/{id}/report ``` Returns the full structured report JSON once the scan completes. **Get this Markdown report** ``` GET https://crawlinx.com/r/{id}.md ``` Returns this LLM-ready Markdown document. **List recent public audits** ``` GET https://crawlinx.com/api/reports ``` ### Quick start (curl) ```bash # Start a scan → note the "id" in the JSON response curl -s -X POST https://crawlinx.com/api/scan \ -H 'Content-Type: application/json' \ -d '{"url":"https://example.com","mode":"free"}' # Then, with that id (replace {id}), fetch the Markdown report curl -s https://crawlinx.com/r/{id}.md ``` Full API reference & usage rules: https://crawlinx.com/api