skolaonline.cz
Making sure you're not a bot!
Last scanned Jul 26, 2026, 5:17 AM
Overall score
Fair
Summary
This website uses Nginx hosted on VSHOSTING - VSHOSTING-CDN, CZ. SEO is fair (70/100) and accessibility is fair (70/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Missing meta description.
- CZ
- Hosted on VSHOSTING - VSHOSTING-CDN, CZ
Top issues to fix
10 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 meta description
SEOAdd a ~150-character meta description to control your search-result snippet and lift click-through rate.
Over half of images are missing alt text
AccessibilityAdd alt attributes to images — screen readers depend on them, and they help image SEO.
Missing X-Content-Type-Options header
SecurityAdd X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.
Missing X-Frame-Options header
SecurityAdd X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.
2 cookies without Secure/HttpOnly flags
SecuritySet Secure and HttpOnly on session cookies so they can't leak over HTTP or be read by injected scripts.
+4 more issues — details in the sections below.
SEO
4 issue(s) found
Performance
940 ms
Security
HTTPS & header checks
Accessibility
1 issue(s) found
Contact
Email, phone, and address published on this site's own pages.
Source: https://skolaonline.cz/contact
Meta tags
- Title
- Making sure you're not a bot!
- Description
- Canonical
- Language
- en
- Charset
- Viewport
- width=device-width, initial-scale=1.0
- Robots meta
- noindex,nofollow
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- VSHOSTING - VSHOSTING-CDN, CZ
- CDN provider
- —
- IP address
- 217.16.190.61
- ASN
- AS43541 (VSHOSTING - VSHOSTING-CDN, CZ)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Alpiro s.r.o.
- Subject
- skolaonline.cz
- Valid from
- May 11, 2026
- Valid to
- Nov 25, 2026
- Days until expiry
- 122
- SAN domains
- skolaonline.cz, *.dmsoftware.cz, *.skolaonline.cz
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyEnabled
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 2 cookie(s) observed
Content & assets
Headings
H1 1 · H2 0 · H3 0
Links
0 internal · 2 external · 2 broken
Images
2 total · 2 missing alt
Scripts / Styles
6 scripts · 2 stylesheets
JS / CSS size
6.3 KB · 2.5 KB
Page size
4.2 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 1
- sitemap.xml
- Found
- URLs in sitemap
- 426
SEO issues
- Missing meta description
- Missing canonical link
- No structured data (JSON-LD) found
- Missing OpenGraph tags
Accessibility issues
- Over half of images are missing alt text
Careers
This company has an active careers page, but individual openings weren't reliably parsed from it — visit the page above for current listings.
Scan details
- Requested URL
- https://skolaonline.cz
- Final URL
- https://skolaonline.cz
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 940 ms
- HTML size
- 4.2 KB
- Redirect chain
- https://skolaonline.cz
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does skolaonline.cz use?
- skolaonline.cz is built with Nginx.
- Is skolaonline.cz secure (HTTPS)?
- Yes. skolaonline.cz uses TLS 1.3 with a certificate issued by Alpiro s.r.o., valid until Nov 25, 2026.
- Who hosts skolaonline.cz?
- skolaonline.cz is hosted on VSHOSTING - VSHOSTING-CDN, CZ.
- What is skolaonline.cz's SEO score?
- skolaonline.cz scored 70/100 for SEO in the latest analysis (fair).
- What is skolaonline.cz's overall website score?
- skolaonline.cz has an overall SiteGraph score of 79/100, combining SEO, performance, security, and accessibility.
- Is skolaonline.cz hiring?
- skolaonline.cz has a careers page; check it directly for current openings.
OpenGraph & Twitter Card
OpenGraph
Twitter Card