across pages - Rule: `duplicate.title` · Category: Duplicate · Occurrences: 2 - [https://sisther.nl/](https://sisther.nl/) — title shared by 2 pages: https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — title shared by 2 pages: https://sisther.nl/ #### Images missing alt text - Rule: `images.missing_alt` · Category: Images · Occurrences: 2 - [https://sisther.nl/home/](https://sisther.nl/home/) — 2 of 20 images missing alt - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 1 of 34 images missing alt #### Page is noindex - Rule: `index.noindex` · Category: Indexability · Occurrences: 1 - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — meta/X-Robots: meta=noindex, follow #### Orphan page (no internal inlinks) - Rule: `links.orphan` · Category: Links · Occurrences: 4 - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — no internal links point here - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — no internal links point here - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — no internal links point here - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — no internal links point here #### Internal link points to a redirect - Rule: `links.redirect_target` · Category: Links · Occurrences: 11 - [https://sisther.nl/](https://sisther.nl/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/home/](https://sisther.nl/home/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/shop/](https://sisther.nl/shop/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ #### Render-blocking script in <head> (no defer/async) - Rule: `perf.render_blocking` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/home/](https://sisther.nl/home/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) #### Title likely truncated in SERP (too wide) - Rule: `title.too_long` · Category: Titles · Occurrences: 1 - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 108 chars, ~834px (limit ~580px) ### Notices (142) #### Heading levels skip a level - Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — h4 follows h1 — skips h2 - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — h4 follows h1 — skips h2 - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — h5 follows h1 — skips h2 - [https://sisther.nl/home/](https://sisther.nl/home/) — h4 follows h1 — skips h2 - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — h6 follows h1 — skips h2 - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — h6 follows h1 — skips h2 - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — h6 follows h1 — skips h2 - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — h6 follows h1 — skips h2 - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — h6 follows h2 — skips h3 - [https://sisther.nl/shop/](https://sisther.nl/shop/) — h6 follows h1 — skips h2 #### No llms.txt for AI agents - Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1 - [https://sisther.nl/](https://sisther.nl/) — 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: 3 - [https://sisther.nl/](https://sisther.nl/) — add a <main> element (or role=main) around the primary content - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — add a <main> element (or role=main) around the primary content - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — add a <main> element (or role=main) around the primary content #### Duplicate meta description across pages - Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 2 - [https://sisther.nl/](https://sisther.nl/) — meta description shared by 2 pages: https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — meta description shared by 2 pages: https://sisther.nl/ #### Multiple <h1> elements - Rule: `h1.multiple` · Category: Headings · Occurrences: 3 - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 2 <h1> elements - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 8 <h1> elements - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 2 <h1> elements #### Image alt text is keyword-stuffed (repetition / low variety) - Rule: `images.alt_stuffed` · Category: Images · Occurrences: 9 - [https://sisther.nl/](https://sisther.nl/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/home/](https://sisther.nl/home/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. #### Image alt text is very long (possible keyword stuffing) - Rule: `images.alt_too_long` · Category: Images · Occurrences: 9 - [https://sisther.nl/](https://sisther.nl/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/home/](https://sisther.nl/home/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/home/](https://sisther.nl/home/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/shop/](https://sisther.nl/shop/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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. #### Images without width/height (layout shift / CLS) - Rule: `images.missing_dimensions` · Category: Images · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 11 of 28 images without width/height - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 11 of 28 images without width/height - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 6 of 45 images without width/height - [https://sisther.nl/home/](https://sisther.nl/home/) — 8 of 20 images without width/height - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 6 of 12 images without width/height - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 6 of 22 images without width/height - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 6 of 21 images without width/height - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 6 of 22 images without width/height - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 6 of 51 images without width/height - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 7 of 34 images without width/height #### Internal link has no anchor text / accessible name - Rule: `links.no_anchor_text` · Category: Links · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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. #### Meta description too long - Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 6 - [https://sisther.nl/](https://sisther.nl/) — 218 chars - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 218 chars - [https://sisther.nl/home/](https://sisther.nl/home/) — 179 chars - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 177 chars - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 201 chars - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 222 chars #### Large DOM (over 1500 elements) slows rendering & interaction - Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 4 - [https://sisther.nl/](https://sisther.nl/) — the page has 1575 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — the page has 1575 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — the page has 1677 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — the page has 1971 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 17 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 17 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 5 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://sisther.nl/home/](https://sisther.nl/home/) — 13 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 8 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 11 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 10 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 11 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 28 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://sisther.nl/shop/](https://sisther.nl/shop/) — 27 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. #### No ETag header (no conditional GET for unchanged pages) - Rule: `perf.no_etag` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 3848 ms #### URL redirects to another URL - Rule: `redirect.single` · Category: Crawlability · Occurrences: 1 - [https://sisther.nl/](https://sisther.nl/) — redirects to https://sisther.nl/cashflow-code/ #### Deprecated schema type with no Google rich result - Rule: `schema.deprecated_type` · Category: Structured Data · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/home/](https://sisther.nl/home/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/shop/](https://sisther.nl/shop/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 11 - [https://sisther.nl/](https://sisther.nl/) — CSP, X-Content-Type-Options - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — CSP, X-Content-Type-Options - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — CSP, X-Content-Type-Options - [https://sisther.nl/home/](https://sisther.nl/home/) — CSP, X-Content-Type-Options - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — X-Content-Type-Options, CSP - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — CSP, X-Content-Type-Options - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — CSP, X-Content-Type-Options - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — X-Content-Type-Options, CSP - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — CSP, X-Content-Type-Options - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — X-Content-Type-Options, CSP - [https://sisther.nl/shop/](https://sisther.nl/shop/) — CSP, X-Content-Type-Options #### target=_blank link without rel=noopener (tab-napping) - Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 10 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". #### Uppercase letters in URL path - Rule: `url.uppercase` · Category: URL · Occurrences: 2 - [https://sisther.nl/wp-content/uploads/2024/07/Sisther-Algemene-Voorwaarden.pdf](https://sisther.nl/wp-content/uploads/2024/07/Sisther-Algemene-Voorwaarden.pdf) - [https://sisther.nl/wp-content/uploads/2024/07/Sisther-Privacyverklaring.pdf](https://sisther.nl/wp-content/uploads/2024/07/Sisther-Privacyverklaring.pdf) ## Checks & coverage Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean. - ✗ Agent Readiness — 10 warning(s), 14 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✓ Cache — clean - ✓ Canonical — clean - ✓ Content — clean - ✗ Crawlability — 1 error(s), 1 notice(s) - ✗ Duplicate — 4 warning(s), 2 notice(s) - ✓ Geo — clean - ✗ Headings — 3 notice(s) - ✓ Hreflang — clean - ✗ Images — 2 warning(s), 28 notice(s) - ✗ Indexability — 1 warning(s) - ✗ Links — 3 error(s), 15 warning(s), 10 notice(s) - ✗ Meta Description — 6 notice(s) - ✓ Mobile — clean - ✗ Performance — 10 warning(s), 45 notice(s) - ✓ Rendering — clean - ✓ Robots — clean - ✗ Security — 21 notice(s) - ✓ Sitemap — clean - ✓ Social — clean - ✗ Structured Data — 10 notice(s) - ✗ Titles — 1 warning(s) - ✗ URL — 2 notice(s) - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/sisther.nl* ## 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":"<scan-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

--- tool: Crawlinx SEO audit source: https://crawlinx.com domain: sisther.nl report_url: "https://crawlinx.com/audit/sisther.nl" crawl_id: 20260722T083043-63d7e5e1 health_score: 51 generated_at: 2026-08-26T03:22:26Z total_pages: 13 html_pages: 11 indexable_pages: 10 errors: 4 warnings: 43 notices: 142 --- # SEO audit: sisther.nl **Health score: 51/100** — needs attention > Audited by [Crawlinx](https://crawlinx.com) — the free technical-SEO crawler. Full report: https://crawlinx.com/audit/sisther.nl ## Overview | Metric | Value | | --- | --- | | Pages crawled | 13 | | HTML pages | 11 | | Indexable | 10 | | Non-indexable | 0 | | Orphan pages | 4 | | Broken internal links | 3 | | Avg response time | 1259 ms | | Errors / Warnings / Notices | 4 / 43 / 142 | | Status codes | 12×200, 1×404 | ## Categories | Category | Score | Errors | Warnings | Notices | | --- | ---: | ---: | ---: | ---: | | Links | 42 | 3 | 15 | 10 | | Crawlability | 92 | 1 | 0 | 1 | | Agent Readiness | 77 | 0 | 10 | 14 | | Performance | 77 | 0 | 10 | 45 | | Duplicate | 91 | 0 | 4 | 2 | | Images | 95 | 0 | 2 | 28 | | Indexability | 98 | 0 | 1 | 0 | | Titles | 98 | 0 | 1 | 0 | | Headings | 100 | 0 | 0 | 3 | | Meta Description | 100 | 0 | 0 | 6 | | Security | 100 | 0 | 0 | 21 | | Structured Data | 100 | 0 | 0 | 10 | | URL | 100 | 0 | 0 | 2 | ## Issues ### Errors (4) #### Broken internal link (target 4xx/5xx) - Rule: `links.broken_internal` · Category: Links · Occurrences: 3 - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — https://sisther.nl/privacyverklaring (HTTP 404) - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — https://sisther.nl/privacyverklaring (HTTP 404) - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — https://sisther.nl/privacyverklaring (HTTP 404) #### Client error (4xx) response - Rule: `status.4xx` · Category: Crawlability · Occurrences: 1 - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — HTTP 404 ### Warnings (43) #### Control has no accessible name - Rule: `agent.control_no_name` · Category: Agent Readiness · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 1 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/home/](https://sisther.nl/home/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 2 button/link(s) with no text or aria-label — an agent can't target them - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 2 button/link(s) with no text or aria-label — an agent can't target them #### Duplicate page content - Rule: `duplicate.content` · Category: Duplicate · Occurrences: 2 - [https://sisther.nl/](https://sisther.nl/) — content shared by 2 pages: https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — content shared by 2 pages: https://sisther.nl/ #### Duplicate across pages - Rule: `duplicate.title` · Category: Duplicate · Occurrences: 2 - [https://sisther.nl/](https://sisther.nl/) — title shared by 2 pages: https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — title shared by 2 pages: https://sisther.nl/ #### Images missing alt text - Rule: `images.missing_alt` · Category: Images · Occurrences: 2 - [https://sisther.nl/home/](https://sisther.nl/home/) — 2 of 20 images missing alt - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 1 of 34 images missing alt #### Page is noindex - Rule: `index.noindex` · Category: Indexability · Occurrences: 1 - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — meta/X-Robots: meta=noindex, follow #### Orphan page (no internal inlinks) - Rule: `links.orphan` · Category: Links · Occurrences: 4 - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — no internal links point here - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — no internal links point here - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — no internal links point here - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — no internal links point here #### Internal link points to a redirect - Rule: `links.redirect_target` · Category: Links · Occurrences: 11 - [https://sisther.nl/](https://sisther.nl/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/home/](https://sisther.nl/home/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ - [https://sisther.nl/shop/](https://sisther.nl/shop/) — https://sisther.nl/ → https://sisther.nl/cashflow-code/ #### Render-blocking script in <head> (no defer/async) - Rule: `perf.render_blocking` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/home/](https://sisther.nl/home/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 2 render-blocking <script> in <head> (add defer/async or use type=module) #### Title likely truncated in SERP (too wide) - Rule: `title.too_long` · Category: Titles · Occurrences: 1 - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 108 chars, ~834px (limit ~580px) ### Notices (142) #### Heading levels skip a level - Rule: `agent.heading_skip` · Category: Agent Readiness · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — h4 follows h1 — skips h2 - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — h4 follows h1 — skips h2 - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — h5 follows h1 — skips h2 - [https://sisther.nl/home/](https://sisther.nl/home/) — h4 follows h1 — skips h2 - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — h6 follows h1 — skips h2 - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — h6 follows h1 — skips h2 - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — h6 follows h1 — skips h2 - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — h6 follows h1 — skips h2 - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — h6 follows h2 — skips h3 - [https://sisther.nl/shop/](https://sisther.nl/shop/) — h6 follows h1 — skips h2 #### No llms.txt for AI agents - Rule: `agent.llms_txt_missing` · Category: Agent Readiness · Occurrences: 1 - [https://sisther.nl/](https://sisther.nl/) — 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: 3 - [https://sisther.nl/](https://sisther.nl/) — add a <main> element (or role=main) around the primary content - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — add a <main> element (or role=main) around the primary content - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — add a <main> element (or role=main) around the primary content #### Duplicate meta description across pages - Rule: `duplicate.meta_desc` · Category: Duplicate · Occurrences: 2 - [https://sisther.nl/](https://sisther.nl/) — meta description shared by 2 pages: https://sisther.nl/cashflow-code/ - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — meta description shared by 2 pages: https://sisther.nl/ #### Multiple <h1> elements - Rule: `h1.multiple` · Category: Headings · Occurrences: 3 - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 2 <h1> elements - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 8 <h1> elements - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 2 <h1> elements #### Image alt text is keyword-stuffed (repetition / low variety) - Rule: `images.alt_stuffed` · Category: Images · Occurrences: 9 - [https://sisther.nl/](https://sisther.nl/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/home/](https://sisther.nl/home/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 4 image(s) have keyword-stuffed alt text — the same word repeated several times, or a long low-variety keyword list. Google's image guidance asks for short, descriptive alt text, not keyword lists; rewrite it to describe the image. #### Image alt text is very long (possible keyword stuffing) - Rule: `images.alt_too_long` · Category: Images · Occurrences: 9 - [https://sisther.nl/](https://sisther.nl/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/home/](https://sisther.nl/home/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 4 image(s) with alt text over 100 chars — shorten it to a concise description #### Likely hero image lacks fetchpriority=high - Rule: `images.hero_no_fetchpriority` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/home/](https://sisther.nl/home/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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://sisther.nl/shop/](https://sisther.nl/shop/) — the likely hero/LCP image (logo-sisther-wietske-bakker.svg) 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. #### Images without width/height (layout shift / CLS) - Rule: `images.missing_dimensions` · Category: Images · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 11 of 28 images without width/height - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 11 of 28 images without width/height - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 6 of 45 images without width/height - [https://sisther.nl/home/](https://sisther.nl/home/) — 8 of 20 images without width/height - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 6 of 12 images without width/height - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 6 of 22 images without width/height - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 6 of 21 images without width/height - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — 6 of 22 images without width/height - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 6 of 51 images without width/height - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 7 of 34 images without width/height #### Internal link has no anchor text / accessible name - Rule: `links.no_anchor_text` · Category: Links · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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. #### Meta description too long - Rule: `meta_desc.too_long` · Category: Meta Description · Occurrences: 6 - [https://sisther.nl/](https://sisther.nl/) — 218 chars - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 218 chars - [https://sisther.nl/home/](https://sisther.nl/home/) — 179 chars - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 177 chars - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 201 chars - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 222 chars #### Large DOM (over 1500 elements) slows rendering & interaction - Rule: `perf.dom_size_large` · Category: Performance · Occurrences: 4 - [https://sisther.nl/](https://sisther.nl/) — the page has 1575 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — the page has 1575 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — the page has 1677 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — the page has 1971 DOM elements (recommended maximum is around 1500) — a large DOM increases style-recalculation, layout and paint cost, hurting LCP and INP. Flatten deep nesting, paginate long lists/tables, and lazy-render off-screen elements. #### Legacy image format (jpg/png/gif) with no next-gen fallback - Rule: `perf.images_legacy_format` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 17 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 17 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 5 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://sisther.nl/home/](https://sisther.nl/home/) — 13 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 8 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 11 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 10 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 11 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 28 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://sisther.nl/shop/](https://sisther.nl/shop/) — 27 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. #### No ETag header (no conditional GET for unchanged pages) - Rule: `perf.no_etag` · Category: Performance · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 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://sisther.nl/shop/](https://sisther.nl/shop/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 3848 ms #### URL redirects to another URL - Rule: `redirect.single` · Category: Crawlability · Occurrences: 1 - [https://sisther.nl/](https://sisther.nl/) — redirects to https://sisther.nl/cashflow-code/ #### Deprecated schema type with no Google rich result - Rule: `schema.deprecated_type` · Category: Structured Data · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/home/](https://sisther.nl/home/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. - [https://sisther.nl/shop/](https://sisther.nl/shop/) — deprecated rich-result type(s) present: Sitelinks Searchbox. The markup is valid schema.org but Google no longer generates a rich result for it — remove or repurpose the block. #### Missing recommended security headers - Rule: `security.missing_headers` · Category: Security · Occurrences: 11 - [https://sisther.nl/](https://sisther.nl/) — CSP, X-Content-Type-Options - [https://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — CSP, X-Content-Type-Options - [https://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — CSP, X-Content-Type-Options - [https://sisther.nl/home/](https://sisther.nl/home/) — CSP, X-Content-Type-Options - [https://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — X-Content-Type-Options, CSP - [https://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — CSP, X-Content-Type-Options - [https://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — CSP, X-Content-Type-Options - [https://sisther.nl/privacyverklaring](https://sisther.nl/privacyverklaring) — X-Content-Type-Options, CSP - [https://sisther.nl/reframe/](https://sisther.nl/reframe/) — CSP, X-Content-Type-Options - [https://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — X-Content-Type-Options, CSP - [https://sisther.nl/shop/](https://sisther.nl/shop/) — CSP, X-Content-Type-Options #### target=_blank link without rel=noopener (tab-napping) - Rule: `security.unsafe_cross_origin_links` · Category: Security · Occurrences: 10 - [https://sisther.nl/](https://sisther.nl/) — 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://sisther.nl/cashflow-code/](https://sisther.nl/cashflow-code/) — 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://sisther.nl/changemakers/](https://sisther.nl/changemakers/) — 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://sisther.nl/home/](https://sisther.nl/home/) — 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://sisther.nl/instant-insta-upgrade/](https://sisther.nl/instant-insta-upgrade/) — 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://sisther.nl/instarevolution/](https://sisther.nl/instarevolution/) — 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://sisther.nl/over-mij/](https://sisther.nl/over-mij/) — 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://sisther.nl/reframe/](https://sisther.nl/reframe/) — 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://sisther.nl/self-made-studio/](https://sisther.nl/self-made-studio/) — 10 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". - [https://sisther.nl/shop/](https://sisther.nl/shop/) — 1 external link(s) use target="_blank" without rel="noopener" — the opened page can hijack your tab (reverse tab-napping). Add rel="noopener noreferrer". #### Uppercase letters in URL path - Rule: `url.uppercase` · Category: URL · Occurrences: 2 - [https://sisther.nl/wp-content/uploads/2024/07/Sisther-Algemene-Voorwaarden.pdf](https://sisther.nl/wp-content/uploads/2024/07/Sisther-Algemene-Voorwaarden.pdf) - [https://sisther.nl/wp-content/uploads/2024/07/Sisther-Privacyverklaring.pdf](https://sisther.nl/wp-content/uploads/2024/07/Sisther-Privacyverklaring.pdf) ## Checks & coverage Crawlinx ran **157 technical-SEO checks** across 27 categories. Categories marked ✓ are fully clean. - ✗ Agent Readiness — 10 warning(s), 14 notice(s) - ✓ AI Content — clean - ✓ Amp — clean - ✓ Budget — clean - ✓ Cache — clean - ✓ Canonical — clean - ✓ Content — clean - ✗ Crawlability — 1 error(s), 1 notice(s) - ✗ Duplicate — 4 warning(s), 2 notice(s) - ✓ Geo — clean - ✗ Headings — 3 notice(s) - ✓ Hreflang — clean - ✗ Images — 2 warning(s), 28 notice(s) - ✗ Indexability — 1 warning(s) - ✗ Links — 3 error(s), 15 warning(s), 10 notice(s) - ✗ Meta Description — 6 notice(s) - ✓ Mobile — clean - ✗ Performance — 10 warning(s), 45 notice(s) - ✓ Rendering — clean - ✓ Robots — clean - ✗ Security — 21 notice(s) - ✓ Sitemap — clean - ✓ Social — clean - ✗ Structured Data — 10 notice(s) - ✗ Titles — 1 warning(s) - ✗ URL — 2 notice(s) - ✓ Video — clean --- *Generated by [Crawlinx](https://crawlinx.com) · free technical-SEO audits · https://crawlinx.com/audit/sisther.nl* ## 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":"<scan-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