Informe SEO: sligro.nl
Generado el 30 de abril de 2026 · 30 hallazgos · 4.8s
Los sitios web institucionales dan prioridad a la accesibilidad, la seguridad y una correcta indexación para que ciudadanos y partes interesadas encuentren fácilmente la información.
Desglose de puntuación
Puntuación media General: 50
Proyección de puntuación
Mejora estimada según los hallazgos identificados en este informe
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Desglose por módulos
Todos los hallazgos (26)
Crítico (6)
- highheaders
Missing strict-transport-security
HSTS header is missing. The site may be vulnerable to downgrade attacks.
Add Strict-Transport-Security header with max-age of at least 31536000
- highheaders
HTTP 404 error
Server returned HTTP 404
Fix the server error to return a 200 status
- highcontent
No H1 tag found
The page has no H1 heading
Add exactly one H1 tag with the primary keyword
- highaccessibility
1 form fields without labels
Form inputs without associated labels are inaccessible
Use <label for="id"> or aria-label on every form field
- 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
- highpage experience
Intrusive interstitials detected
Found 10 potential popup/overlay elements
Reduce intrusive interstitials — they hurt mobile experience and can trigger Google penalties
Medio (9)
- mediumdns
No DKIM record found
None of the common DKIM selectors returned a valid key. Email authentication may be incomplete.
Configure DKIM signing with your email provider and publish the public key in DNS
- 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
- mediumtechnology
Render-blocking scripts
8 scripts load synchronously without async/defer
Add async or defer to non-critical scripts to improve page load speed
- mediumcontent
Thin content
Page has only 260 words (recommended: 300+)
Add more meaningful content — aim for at least 300 words on key pages
- mediumcontent
Very low text-to-HTML ratio
Text/HTML ratio is 2% (recommended: >5%)
Increase meaningful text content relative to HTML markup
- mediumcontent
External links without noopener
1 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
- mediumaccessibility
No skip navigation link
No skip-to-content link at the top of the page
Add a visually hidden skip link as the first focusable element
- mediumbrand checker
No Organization schema
No Organization JSON-LD found
Add Organization structured data with name, logo, and contact information
Bajo (11)
- lowdns
No IPv6 (AAAA) records
The domain has no AAAA records for IPv6 connectivity
Add AAAA DNS records for IPv6 support
- lowdns
Only one MX record (no redundancy)
A single MX record means no failover if the mail server goes down.
Add a secondary MX record for email redundancy
- 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
- lowstructured data
Missing Organization schema
No Organization or LocalBusiness structured data found
Add Organization schema with name, logo, and contact info
- lowtechnology
Many inline scripts
26 inline <script> blocks found
Move inline scripts to external files for caching and CSP compliance
- lowrate limits
No rate limiting detected
No explicit rate-limit headers or 429 responses detected. AWS CloudFront WAF provides platform-level protection.
Implement rate limiting (e.g., 429 Too Many Requests) to protect against brute-force attacks
- lownews mentions
No press page on site
Found 1 external mentions but no dedicated press page
Create a /press or /news section to aggregate and amplify media coverage
- lowbrand checker
No web app manifest
No manifest.json linked — PWA features unavailable
Add a web app manifest for installability and brand customization
- lowbrand checker
Missing og:site_name
Open Graph site name is not set
Add og:site_name meta tag for consistent social sharing
AI Fix Prompt
Copie este prompt en ChatGPT o Claude para obtener instrucciones paso a paso para resolver las incidencias
Fix all SEO issues found in the audit of sligro.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": "sligro.nl",
"scores": {
"overall": 79,
"performance": 0,
"seo": 89,
"accessibility": 54,
"bestPractices": 94,
"security": 78
},
"findings": [
{
"module": "dns",
"severity": "medium",
"title": "No DKIM record found",
"description": "None of the common DKIM selectors returned a valid key. Email authentication may be incomplete.",
"recommendation": "Configure DKIM signing with your email provider and publish the public key in DNS"
},
{
"module": "headers",
"severity": "high",
"title": "Missing strict-transport-security",
"description": "HSTS header is missing. The site may be vulnerable to downgrade attacks.",
"recommendation": "Add Strict-Transport-Security header with max-age of at least 31536000"
},
{
"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": "high",
"title": "HTTP 404 error",
"description": "Server returned HTTP 404",
"recommendation": "Fix the server error to return a 200 status"
},
{
"module": "technology",
"severity": "medium",
"title": "Render-blocking scripts",
"description": "8 scripts load synchronously without async/defer",
"recommendation": "Add async or defer to non-critical scripts to improve page load speed"
},
{
"module": "content",
"severity": "high",
"title": "No H1 tag found",
"description": "The page has no H1 heading",
"recommendation": "Add exactly one H1 tag with the primary keyword"
},
{
"module": "content",
"severity": "medium",
"title": "Thin content",
"description": "Page has only 260 words (recommended: 300+)",
"recommendation": "Add more meaningful content — aim for at least 300 words on key pages"
},
{
"module": "content",
"severity": "medium",
"title": "Very low text-to-HTML ratio",
"description": "Text/HTML ratio is 2% (recommended: >5%)",
"recommendation": "Increase meaningful text content relative to HTML markup"
},
{
"module": "content",
"severity": "medium",
"title": "External links without noopener",
"description": "1 external links with target=\"_blank\" lack rel=\"noopener\"",
"recommendation": "Add rel=\"noopener noreferrer\" to all target=\"_blank\" links"
},
{
"module": "accessibility",
"severity": "high",
"title": "1 form fields without labels",
"description": "Form inputs without associated labels are inaccessible",
"recommendation": "Use <label for=\"id\"> or aria-label on every form field"
},
{
"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": "medium",
"title": "No skip navigation link",
"description": "No skip-to-content link at the top of the page",
"recommendation": "Add a visually hidden skip link as the first focusable element"
},
{
"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": "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": "page-experience",
"severity": "high",
"title": "Intrusive interstitials detected",
"description": "Found 10 potential popup/overlay elements",
"recommendation": "Reduce intrusive interstitials — they hurt mobile experience and can trigger Google penalties"
}
]
}
```Recomendaciones para su sector
- 1Cumplir con las directrices de accesibilidad WCAG 2.1 AA
- 2Configurar cabeceras de seguridad HSTS y CSP
- 3Asegurar que el sitemap incluya todas las páginas importantes
- 4Optimizar la velocidad de carga a menos de 2 segundos
- 5Garantizar un diseño responsivo en todas las páginas
Lista de control SEO para General
Consejos para sitios web de Mixto
- →Defina páginas de aterrizaje diferenciadas para cada segmento
- →Aplique estrategias de metaetiquetas específicas por tipología de página
- →Segmente el mapa del sitio por tipo de contenido
Contexto SEO local
Los Países Bajos son uno de los mercados más maduros digitalmente de Europa, con una elevadísima cuota de uso móvil.