What technology does vu.nl use?

We did not detect any specific technologies for vu.nl in the latest scan.

Is vu.nl secure (HTTPS)?

Yes. vu.nl uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 14, 2027.

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

What is vu.nl's SEO score?

vu.nl scored 80/100 for SEO in the latest analysis (great).

What is vu.nl's overall website score?

vu.nl has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.

Has vu.nl's score changed over time?

vu.nl's overall score has improved by 4 points (from 82 to 86) since Jul 24, 2026.

vu.nl

Vrije Universiteit Amsterdam

Last scanned Jul 31, 2026, 9:00 PM · 11 views

Overall score

Great

Summary

Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is. SEO is good (80/100) and accessibility is fair (70/100). Security scores excellent (90/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is

Top issues to fix

6 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.
Over half of images are missing alt text
Accessibility
Add alt attributes to images — screen readers depend on them, and they help image SEO.
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

3 issue(s) found

100

Performance

260 ms

Security

HTTPS & header checks

Accessibility

1 issue(s) found

Score history

+4 overall since Jul 24, 2026

Overall: 86
SEO: 80
Security: 90
Performance: 100
Accessibility: 70

Organization

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

Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is

Meta tags

Title: Vrije Universiteit Amsterdam
Description: Vrije Universiteit Amsterdam, de brede inclusieve universiteit waar iedereen welkom is
Canonical: https://vu.nl/nl
Language: nl
Charset: utf-8
Viewport: width=device-width, height=device-height, initial-scale=1.0
Robots meta
Manifest

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

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: vu.nl
Valid from: Jul 30, 2026
Valid to: Feb 14, 2027
Days until expiry: 197
SAN domains: vu.nl, www.vu.nl

Security headers

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

Compression: none · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 10 · H3 0

Links

92 internal · 2 external · 20 broken

Images

5 total · 5 missing alt

Scripts / Styles

15 scripts · 1 stylesheets

JS / CSS size

2.6 KB · 514 B

Page size

113 KB

Robots.txt & Sitemap

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

SEO issues

No structured data (JSON-LD) found
robots.txt not found
sitemap.xml not found

Scan details

Requested URL: https://vu.nl
Final URL: https://vu.nl/nl
HTTP status: 200
HTTP version: HTTP/2
Response time: 258 ms
HTML size: 113 KB
Redirect chain: https://vu.nl → https://vu.nl/nl

See something wrong on this report? Request a correction

Frequently asked questions

What technology does vu.nl use?: We did not detect any specific technologies for vu.nl in the latest scan.
Is vu.nl secure (HTTPS)?: Yes. vu.nl uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Feb 14, 2027.
Who hosts vu.nl?: Hosting provider information for vu.nl is not available yet.
What is vu.nl's SEO score?: vu.nl scored 80/100 for SEO in the latest analysis (great).
What is vu.nl's overall website score?: vu.nl has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Has vu.nl's score changed over time?: vu.nl's overall score has improved by 4 points (from 82 to 86) since Jul 24, 2026.