slu.cz
Úvod / Slezská univerzita v Opavě
Last scanned Jul 26, 2026, 5:18 AM · 3 views
Overall score
Fair
Summary
Webové stránky Slezské univerzity v Opavě. This website uses Nginx hosted on CESNET2 - CESNET z.s.p.o., CZ. SEO is good (75/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance fair (70/100). Top issue: No H1 heading found.
Webové stránky Slezské univerzity v Opavě
- CZ
- Hosted on CESNET2 - CESNET z.s.p.o., CZ
Top issues to fix
7 issues found · 2 high priority
Missing Content-Security-Policy header
SecurityAdd a CSP to control which sources can run scripts — the strongest single defense against XSS.
No H1 heading found
SEOAdd 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
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
1 cookie without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
No structured data (JSON-LD) found
SEOAdd JSON-LD (Organization, Article, Product…) to become eligible for rich results.
Missing OpenGraph tags
SEOAdd og:title/og:description/og:image so shared links render a proper preview card.
+1 more issue — details in the sections below.
SEO
3 issue(s) found
Performance
3.49 s
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Organization
Company details published in this site's own structured data.
Webové stránky Slezské univerzity v Opavě
Meta tags
- Title
- Úvod / Slezská univerzita v Opavě
- Description
- Webové stránky Slezské univerzity v Opavě
- Canonical
- https://www.slu.cz/slu/cz/
- Language
- en
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- Manifest
- https://www.slu.cz/img/websu/favicon/manifest.json
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- CESNET2 - CESNET z.s.p.o., CZ
- CDN provider
- —
- IP address
- 193.84.208.6
- ASN
- AS2852 (CESNET2 - CESNET z.s.p.o., CZ)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA |
|
| MX | — |
| TXT | — |
| NS | — |
| CAA | — |
| CNAME |
|
| IPv6 support | Yes |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Hellenic Academic and Research Institutions CA
- Subject
- slu.cz
- Valid from
- Nov 28, 2025
- Valid to
- Nov 28, 2026
- Days until expiry
- 122
- SAN domains
- slu.cz, opf.slu.cz, www.vck.slu.cz, physics.slu.cz, bspace.slu.cz, www.uks.slu.cz, eng.opf.slu.cz, www.sport.slu.cz, waldo.opf.slu.cz, jis.slu.cz, pkcentrum.slu.cz, www.math.slu.cz, www.kariera.slu.cz, intranet.slu.cz, fpf.slu.cz, fvp.slu.cz, vck.slu.cz, inoviny.slu.cz, uk.slu.cz, help.slu.cz, www.czv.slu.cz, www.fpf.slu.cz, sport.slu.cz, poradna.slu.cz, italistika.fpf.slu.cz, www.projekty.slu.cz, www.uk.slu.cz, english.math.slu.cz, knihovna.fpf.slu.cz, www.absolventi.slu.cz, absolventi.slu.cz, uks.slu.cz, opava.uk.slu.cz, cit.slu.cz, czv.slu.cz, www.opf.slu.cz, eng.fvp.slu.cz, www.slu.cz, www.inoviny.slu.cz, www.fvp.slu.cz, www.phys.slu.cz, archivsu.slu.cz, projekty.slu.cz, eng.physics.slu.cz, karvina.uk.slu.cz, eduroam.slu.cz, u3v.slu.cz, phys.slu.cz, www.bspace.slu.cz, www.mixuj.slu.cz, english.fpf.slu.cz, www.waldo.opf.slu.cz, english.physics.slu.cz, english.slu.cz, eng.fpf.slu.cz, eng.math.slu.cz, vr.slu.cz, eng.slu.cz, english.opf.slu.cz, math.slu.cz, www.physics.slu.cz, www.u3v.slu.cz, english.fvp.slu.cz, kariera.slu.cz, op-vr.slu.cz, mixuj.slu.cz, kinematograf.fpf.slu.cz, testweb.slu.cz, knihovna.slu.cz
Security headers
- Strict-Transport-SecurityEnabled
- Content-Security-PolicyMissing
- X-Frame-OptionsEnabled
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 1 cookie(s) observed
Content & assets
Headings
H1 0 · H2 0 · H3 0
Links
0 internal · 0 external · 0 broken
Images
0 total · 0 missing alt
Scripts / Styles
1 scripts · 34 stylesheets
JS / CSS size
543 B · 415 KB
Page size
92.6 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 43
- sitemap.xml
- Found
- URLs in sitemap
- 775
SEO issues
- No H1 heading found
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- No H1 heading found
Scan details
- Requested URL
- https://slu.cz
- Final URL
- https://www.slu.cz/slu/cz/
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 3.49 s
- HTML size
- 92.6 KB
- Redirect chain
- https://slu.cz → https://www.slu.cz/slu/cz → https://www.slu.cz/slu/cz/
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does slu.cz use?
- slu.cz is built with PHP, Bootstrap, Google Analytics, Nginx.
- Is slu.cz secure (HTTPS)?
- Yes. slu.cz uses TLS 1.3 with a certificate issued by Hellenic Academic and Research Institutions CA, valid until Nov 28, 2026.
- Who hosts slu.cz?
- slu.cz is hosted on CESNET2 - CESNET z.s.p.o., CZ.
- What is slu.cz's SEO score?
- slu.cz scored 75/100 for SEO in the latest analysis (fair).
- What is slu.cz's overall website score?
- slu.cz has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
OpenGraph & Twitter Card
OpenGraph
Twitter Card