fzu.cz
Fyzikální ústav Akademie věd České republiky | FZU
Last scanned Jul 27, 2026, 9:43 AM · 1 view
Overall score
Great
Summary
This website uses PHP hosted on CESNET2 - CESNET z.s.p.o., CZ. SEO is good (75/100) and accessibility is excellent (100/100). Security scores good (80/100) and performance excellent (90/100). Top issue: Missing meta description.
- CZ
- Hosted on CESNET2 - CESNET z.s.p.o., CZ
Top issues to fix
6 issues found · 3 high priority
Missing Strict-Transport-Security header
SecurityAdd HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
Missing meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Multiple H1 headings found
SEOKeep a single H1 per page and demote the others to H2/H3.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
2 broken links on the page
SEOFix or remove broken links — they waste crawl budget and erode user trust.
SEO
3 issue(s) found
Performance
770 ms
Security
HTTPS & header checks
Accessibility
0 issue(s) found
Organization
Company details published in this site's own structured data.
Meta tags
- Title
- Fyzikální ústav Akademie věd České republiky | FZU
- Description
- Canonical
- https://www.fzu.cz/home
- Language
- cs
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
- https://www.fzu.cz/site.webmanifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- CESNET2 - CESNET z.s.p.o., CZ
- CDN provider
- —
- IP address
- 147.231.27.145
- ASN
- AS2852 (CESNET2 - CESNET z.s.p.o., CZ)
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
- www.fzu.cz
- Valid from
- Sep 8, 2025
- Valid to
- Sep 8, 2026
- Days until expiry
- 43
- SAN domains
- www.fzu.cz, licence.fzu.cz, crystbox.fzu.cz, webfzu-prod.fzu.cz, intranet.fzu.cz, mautic.fzu.cz, matomo.fzu.cz, webfzu-para.fzu.cz, faktzabavnejustav.cz, fzu.cz
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsEnabled
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 5 · H2 10 · H3 7
Links
74 internal · 7 external · 2 broken
Images
17 total · 0 missing alt
Scripts / Styles
10 scripts · 3 stylesheets
JS / CSS size
850 KB · 492 KB
Page size
86.9 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 27
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Missing meta description
- Multiple H1 headings found
- No structured data (JSON-LD) found
Accessibility issues
No accessibility issues detected.
Scan details
- Requested URL
- https://fzu.cz
- Final URL
- https://www.fzu.cz/home
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 769 ms
- HTML size
- 86.9 KB
- Redirect chain
- https://fzu.cz → http://www.fzu.cz/ → https://www.fzu.cz/ → https://www.fzu.cz/home
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does fzu.cz use?
- fzu.cz is built with PHP, Drupal, Meta Pixel, Apache.
- Is fzu.cz secure (HTTPS)?
- Yes. fzu.cz uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Sep 8, 2026.
- Who hosts fzu.cz?
- fzu.cz is hosted on CESNET2 - CESNET z.s.p.o., CZ.
- What is fzu.cz's SEO score?
- fzu.cz scored 75/100 for SEO in the latest analysis (fair).
- What is fzu.cz's overall website score?
- fzu.cz has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card