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SGSiteGraph

sdu.nl

Home - Lefebvre Sdu

Last scanned Aug 24, 2026, 1:22 PM

85

Overall score

Great

Summary

Met de specialistische vakkennis, deskundige duiding, legal AI en opleidingen van Lefebvre Sdu kom je sneller tot de kern,. This website uses WordPress hosted on AWS. SEO is excellent (90/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance good (85/100). Top issue: No H1 heading found.

Met de specialistische vakkennis, deskundige duiding, legal AI en opleidingen van Lefebvre Sdu kom je sneller tot de kern,

Ireland
Hosted on AWS

Top issues to fix

4 issues found · 2 high priority

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • No H1 heading found

    SEO

    Add exactly one H1 describing the page's main topic — it anchors the document outline for search engines and screen readers.

  • Missing X-Content-Type-Options header

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

90

SEO

1 issue(s) found

85

Performance

272 ms

75

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Organization

Company details published in this site's own structured data.

Met de specialistische vakkennis, deskundige duiding, legal AI en opleidingen van Lefebvre Sdu kom je sneller tot de kern,

LinkedInInstagramYouTube

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Home - Lefebvre Sdu
Description
 Met de specialistische vakkennis, deskundige duiding, legal AI en opleidingen van Lefebvre Sdu kom je sneller tot de kern,
Canonical
https://www.sdu.nl/
Language
nl-NL
Charset
UTF-8
Viewport
width=device-width, initial-scale=1
Robots meta
index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Home
og:description
 Met de specialistische vakkennis, deskundige duiding, legal AI en opleidingen van Lefebvre Sdu kom je sneller tot de kern,
og:type
website
og:url
https://www.sdu.nl/

Twitter Card

twitter:card
summary_large_image
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

PHPWordPressjQueryGoogle AnalyticsGoogle AdsMeta Pixel

Hosting & CDN

Hosting provider
AWS
CDN provider
—
IP address
46.137.116.5
ASN
AS16509 (AMAZON-02 - Amazon.com, Inc., US)

DNS records

TypeValue
A
  • 46.137.116.5
  • 52.212.186.218
  • 54.247.26.95
AAAA—
MX—
TXT
  • heritage=external-dns,external-dns/owner=prod,external-dns/resource=ingress/sdunl-company-site/sdunl-company-site-sdu-titan-company-site
NS—
CAA—
CNAME
  • sdunl.aws.sdu.nl
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
www.sdu.nl
Valid from
Aug 9, 2026
Valid to
Nov 7, 2026
Days until expiry
74
SAN domains
www.sdu.nl

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyMissing
  • X-Frame-OptionsMissing
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 0 · H2 3 · H3 7

Links

58 internal · 6 external · 0 broken

Images

5 total · 0 missing alt

Scripts / Styles

64 scripts · 4 stylesheets

JS / CSS size

1.6 MB · 164 KB

Page size

212 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
1
sitemap.xml
Found
URLs in sitemap
-1

SEO issues

  • No H1 heading found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://sdu.nl
Final URL
https://www.sdu.nl/
HTTP status
200
HTTP version
HTTP/2
Response time
268 ms
HTML size
212 KB
Redirect chain
https://sdu.nl → https://www.sdu.nl/

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does sdu.nl use?
sdu.nl is built with PHP, WordPress, jQuery, Google Analytics, Google Ads, Meta Pixel.
Is sdu.nl secure (HTTPS)?
Yes. sdu.nl uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 7, 2026.
Who hosts sdu.nl?
sdu.nl is hosted on AWS.
What is sdu.nl's SEO score?
sdu.nl scored 90/100 for SEO in the latest analysis (excellent).
What is sdu.nl's overall website score?
sdu.nl has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.