SEO-Bericht: wsrv.nl
Erstellt am 28. April 2026 · 37 Befunde · 2.9s
Institutionelle Websites priorisieren Barrierefreiheit, Sicherheit und korrekte Indexierung — Bürger und Stakeholder müssen relevante Informationen leicht finden.
Score-Aufschlüsselung
Durchschnittlicher Allgemein-Score: 50
Score-Prognose
Geschätzte Verbesserung basierend auf den Ergebnissen dieses Berichts
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Modul-Übersicht
Alle Befunde (34)
Kritisch (2)
- highssl
SSL certificate not found
Could not retrieve SSL certificate
Ensure the site has a valid SSL certificate installed
- highaccessibility
2 buttons without accessible name
Buttons with no text, aria-label, or title are invisible to screen readers
Add visible text or aria-label to all buttons
Mittel (17)
- mediumheaders
Missing content-security-policy
CSP header is missing. The site may be vulnerable to XSS attacks.
Add a Content-Security-Policy header to restrict resource loading
- mediumheaders
Missing x-frame-options
X-Frame-Options is missing. The site may be vulnerable to clickjacking.
Add X-Frame-Options: DENY or SAMEORIGIN header
- mediumheaders
CORS allows all origins
Access-Control-Allow-Origin: * allows any website to make requests
Restrict CORS to specific trusted origins if the page handles sensitive data
- mediummeta
Title too short
Title is 7 characters (recommended: 50-60)
Write a more descriptive title (50-60 characters)
- mediummeta
Meta description too short
Description is 28 characters (recommended: 120-160)
Write a more detailed meta description
- mediummeta
Missing canonical URL
No canonical link tag found
Add a canonical URL to prevent duplicate content issues
- mediummeta
Missing og:image
No Open Graph image set. Social shares will lack a preview image.
Add og:image meta tag (1200x630px recommended)
- mediumstructured data
No structured data found
No JSON-LD schemas detected on the page
Add structured data (Organization, WebSite, BreadcrumbList) for rich search results
- mediumrobots
No sitemap in robots.txt
robots.txt does not reference a sitemap
Add Sitemap: https://yourdomain.com/sitemap.xml to robots.txt
- mediumcontent
Thin content
Page has only 121 words (recommended: 300+)
Add more meaningful content — aim for at least 300 words on key pages
- mediumcontent
External links without noopener
12 external links with target="_blank" lack rel="noopener"
Add rel="noopener noreferrer" to all target="_blank" links
- mediumaccessibility
Missing main landmark
No <main> element or role="main" found
Wrap primary content in a <main> element for screen reader navigation
- mediumsocial checker
Missing og:image
No social sharing image set — posts will lack visual appeal
Add og:image meta tag (1200x630px recommended)
- mediumsocial checker
Missing Twitter Card
No twitter:card meta tag — Twitter/X will use default preview
Add twitter:card meta tag (e.g., "summary_large_image")
- mediumbrand checker
No Organization schema
No Organization JSON-LD found
Add Organization structured data with name, logo, and contact information
- mediumbrand checker
Missing favicon
No favicon link tag found
Add a favicon for brand recognition in browser tabs and bookmarks
- mediumindexing checker
Missing canonical URL
No canonical link tag found — search engines may index duplicate versions
Add a self-referencing canonical URL to prevent duplicate content issues
Niedrig (15)
- lowheaders
Missing referrer-policy
Referrer-Policy is not set. Full URLs may leak to third parties.
Add Referrer-Policy: strict-origin-when-cross-origin
- lowheaders
Missing permissions-policy
Permissions-Policy is missing.
Add Permissions-Policy to restrict browser feature access
- lowheaders
Missing Cache-Control header
No Cache-Control header — browser caching is undefined
Add Cache-Control with appropriate max-age for static and dynamic resources
- lowheaders
Content-Type missing charset
Content-Type header does not specify charset
Add charset=utf-8 to Content-Type header
- lowmeta
Missing Twitter Card
No twitter:card meta tag
Add twitter:card meta tag for Twitter sharing
- lowmeta
Missing favicon
No favicon link tag found
Add a favicon for better browser tab recognition
- lowmeta
Missing og:type
Open Graph type is not set
Add og:type meta tag (e.g., "website", "article")
- lowmeta
Missing og:url
Open Graph URL is not set
Add og:url meta tag matching the canonical URL
- lowsitemap
No lastmod dates
Sitemap URLs don't include lastmod timestamps
Add <lastmod> to help search engines prioritize crawling
- lowsitemap
Inconsistent trailing slashes
Some sitemap URLs end with / and some don't
Be consistent with trailing slashes in URLs
- lowrate limits
No rate limiting detected
No explicit rate-limit headers or 429 responses detected. Cloudflare WAF provides platform-level protection.
Implement rate limiting (e.g., 429 Too Many Requests) to protect against brute-force attacks
- lowsocial checker
Missing og:type
Open Graph type is not set
Add og:type meta tag (e.g., "website", "article")
- lowbrand checker
No WebSite schema
No WebSite JSON-LD found
Add WebSite structured data for sitelinks search box in Google
- lowbrand checker
Missing og:site_name
Open Graph site name is not set
Add og:site_name meta tag for consistent social sharing
- lowpage experience
No lazy loading on images
6 images without lazy loading
Add loading="lazy" to below-the-fold images for faster initial page load
KI-Reparatur-Prompt
Kopieren Sie diesen Prompt in ChatGPT oder Claude, um schrittweise Fix-Anweisungen zu erhalten
Fix all SEO issues found in the audit of wsrv.nl.
Prioritize high-severity issues first, then medium. For each fix, make the actual code change — don't just describe what to do.
```json
{
"domain": "wsrv.nl",
"scores": {
"overall": 74,
"performance": 0,
"seo": 74,
"accessibility": 77,
"bestPractices": 94,
"security": 66
},
"findings": [
{
"module": "headers",
"severity": "medium",
"title": "Missing content-security-policy",
"description": "CSP header is missing. The site may be vulnerable to XSS attacks.",
"recommendation": "Add a Content-Security-Policy header to restrict resource loading"
},
{
"module": "headers",
"severity": "medium",
"title": "Missing x-frame-options",
"description": "X-Frame-Options is missing. The site may be vulnerable to clickjacking.",
"recommendation": "Add X-Frame-Options: DENY or SAMEORIGIN header"
},
{
"module": "headers",
"severity": "medium",
"title": "CORS allows all origins",
"description": "Access-Control-Allow-Origin: * allows any website to make requests",
"recommendation": "Restrict CORS to specific trusted origins if the page handles sensitive data"
},
{
"module": "ssl",
"severity": "high",
"title": "SSL certificate not found",
"description": "Could not retrieve SSL certificate",
"recommendation": "Ensure the site has a valid SSL certificate installed"
},
{
"module": "meta",
"severity": "medium",
"title": "Title too short",
"description": "Title is 7 characters (recommended: 50-60)",
"recommendation": "Write a more descriptive title (50-60 characters)"
},
{
"module": "meta",
"severity": "medium",
"title": "Meta description too short",
"description": "Description is 28 characters (recommended: 120-160)",
"recommendation": "Write a more detailed meta description"
},
{
"module": "meta",
"severity": "medium",
"title": "Missing canonical URL",
"description": "No canonical link tag found",
"recommendation": "Add a canonical URL to prevent duplicate content issues"
},
{
"module": "meta",
"severity": "medium",
"title": "Missing og:image",
"description": "No Open Graph image set. Social shares will lack a preview image.",
"recommendation": "Add og:image meta tag (1200x630px recommended)"
},
{
"module": "structured-data",
"severity": "medium",
"title": "No structured data found",
"description": "No JSON-LD schemas detected on the page",
"recommendation": "Add structured data (Organization, WebSite, BreadcrumbList) for rich search results"
},
{
"module": "robots",
"severity": "medium",
"title": "No sitemap in robots.txt",
"description": "robots.txt does not reference a sitemap",
"recommendation": "Add Sitemap: https://yourdomain.com/sitemap.xml to robots.txt"
},
{
"module": "content",
"severity": "medium",
"title": "Thin content",
"description": "Page has only 121 words (recommended: 300+)",
"recommendation": "Add more meaningful content — aim for at least 300 words on key pages"
},
{
"module": "content",
"severity": "medium",
"title": "External links without noopener",
"description": "12 external links with target=\"_blank\" lack rel=\"noopener\"",
"recommendation": "Add rel=\"noopener noreferrer\" to all target=\"_blank\" links"
},
{
"module": "accessibility",
"severity": "medium",
"title": "Missing main landmark",
"description": "No <main> element or role=\"main\" found",
"recommendation": "Wrap primary content in a <main> element for screen reader navigation"
},
{
"module": "accessibility",
"severity": "high",
"title": "2 buttons without accessible name",
"description": "Buttons with no text, aria-label, or title are invisible to screen readers",
"recommendation": "Add visible text or aria-label to all buttons"
},
{
"module": "social-checker",
"severity": "medium",
"title": "Missing og:image",
"description": "No social sharing image set — posts will lack visual appeal",
"recommendation": "Add og:image meta tag (1200x630px recommended)"
},
{
"module": "social-checker",
"severity": "medium",
"title": "Missing Twitter Card",
"description": "No twitter:card meta tag — Twitter/X will use default preview",
"recommendation": "Add twitter:card meta tag (e.g., \"summary_large_image\")"
},
{
"module": "brand-checker",
"severity": "medium",
"title": "No Organization schema",
"description": "No Organization JSON-LD found",
"recommendation": "Add Organization structured data with name, logo, and contact information"
},
{
"module": "brand-checker",
"severity": "medium",
"title": "Missing favicon",
"description": "No favicon link tag found",
"recommendation": "Add a favicon for brand recognition in browser tabs and bookmarks"
},
{
"module": "indexing-checker",
"severity": "medium",
"title": "Missing canonical URL",
"description": "No canonical link tag found — search engines may index duplicate versions",
"recommendation": "Add a self-referencing canonical URL to prevent duplicate content issues"
}
]
}
```Empfehlungen für Ihre Branche
- 1WCAG 2.1 AA-Konformität sicherstellen
- 2Alle empfohlenen Security Headers implementieren
- 3Sicherstellen dass Sitemap alle wichtigen Seiten abdeckt
- 4Seitenladezeit auf unter 2 Sekunden optimieren
- 5Responsives Design auf allen Seiten sicherstellen
SEO-Checkliste für Allgemein
Tipps für Gemischt-Websites
- →Definieren Sie klare Landingpages für jedes Kundensegment
- →Nutzen Sie unterschiedliche Meta-Strategien pro Seitengruppe
- →Segmentieren Sie Ihre Sitemap nach Inhaltstyp
Lokaler SEO-Kontext
Die Niederlande sind einer der digital reifsten Märkte Europas mit hohem mobilen Anteil.
Verwenden Sie Strg+P / Cmd+P zum Speichern als PDF