What technology does surf.nl use?

surf.nl is built with jQuery, Nginx.

Is surf.nl secure (HTTPS)?

Yes. surf.nl uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 6, 2027.

Hosting provider information for surf.nl is not available yet.

What is surf.nl's SEO score?

surf.nl scored 70/100 for SEO in the latest analysis (fair).

What is surf.nl's overall website score?

surf.nl has an overall SiteGraph score of 91/100, combining SEO, performance, security, and accessibility.

Has surf.nl's score changed over time?

surf.nl's overall score has declined by 1 point (from 92 to 91) since Jul 26, 2026.

surf.nl

SURF is de ict-coöperatie van onderwijs en onderzoek | SURF.nl

Last scanned Aug 3, 2026, 6:00 AM · 12 views

Overall score

Excellent

Summary

Meer dan 100 onderwijs- en onderzoeksinstellingen in Nederland werken in de coöperatie SURF samen om de kansen van digitalisering ten volle benutten. This website uses Nginx. SEO is fair (70/100) and accessibility is excellent (100/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

Meer dan 100 onderwijs- en onderzoeksinstellingen in Nederland werken in de coöperatie SURF samen om de kansen van digitalisering ten volle benutten. Het doel: beter en flexibeler onderwijs en onderzoek.

Top issues to fix

6 issues found

Title longer than 60 characters
SEO
Shorten the title to under 60 characters so search results don't truncate it.
Meta description longer than 160 characters
SEO
Trim the meta description to under 160 characters to avoid truncation in search results.
No structured data (JSON-LD) found
SEO
Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.
robots.txt not found
SEO
Publish /robots.txt with a Sitemap: directive to guide crawlers.
sitemap.xml not found
SEO
Publish an XML sitemap and reference it from robots.txt to speed up page discovery.
20 broken links on the page
SEO
Fix or remove broken links — they waste crawl budget and erode user trust.

SEO

5 issue(s) found

100

Performance

278 ms

100

Security

HTTPS & header checks

100

Accessibility

0 issue(s) found

Score history

-1 overall since Jul 26, 2026

Overall: 91
SEO: 70
Security: 100
Performance: 100
Accessibility: 100

Organization

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

LinkedIn YouTube

Contact

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

Email: voorbeeld@surf.nl

Meta tags

Title: SURF is de ict-coöperatie van onderwijs en onderzoek | SURF.nl
Description: Meer dan 100 onderwijs- en onderzoeksinstellingen in Nederland werken in de coöperatie SURF samen om de kansen van digitalisering ten volle benutten. Het doel: beter en flexibeler onderwijs en onderzoek.
Canonical: https://www.surf.nl/
Language: nl
Charset: utf-8
Viewport: width=device-width, initial-scale=1.0
Robots meta
Manifest: https://www.surf.nl/themes/surf/favicons/site.webmanifest

Technologies

Detected frameworks, languages, and tools.

jQuery Nginx

Hosting & CDN

Hosting provider: —
CDN provider: —
IP address: —
ASN: —

DNS records

Type	Value
A	—
AAAA	—
MX	—
TXT	—
NS	—
CAA	—
CNAME	—
IPv6 support	No

TLS / SSL certificate

Version: TLS 1.3
Issuer: Hellenic Academic and Research Institutions CA
Subject: surf.nl
Valid from: Jul 22, 2026
Valid to: Feb 6, 2027
Days until expiry: 187
SAN domains: surf.nl, www.surf.nl

Security headers

Strict-Transport-SecurityEnabled
Content-Security-PolicyEnabled
X-Frame-OptionsEnabled
X-Content-Type-OptionsEnabled
Referrer-PolicyEnabled
Permissions-PolicyMissing

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 9 · H3 12

Links

112 internal · 14 external · 20 broken

Images

13 total · 0 missing alt

Scripts / Styles

13 scripts · 3 stylesheets

JS / CSS size

7.2 KB · 166 B

Page size

265 KB

Robots.txt & Sitemap

robots.txt: Not found
Disallow rules: 0
sitemap.xml: Not found
URLs in sitemap: 0

SEO issues

Title longer than 60 characters
Meta description longer than 160 characters
No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://surf.nl
Final URL: https://www.surf.nl/
HTTP status: 200
HTTP version: HTTP/2
Response time: 273 ms
HTML size: 265 KB
Redirect chain: https://surf.nl → https://www.surf.nl/

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