cal.to
Kalender aus der Bundesliga, von Städten, aus dem TV oder Schulferien kostenlos abonnieren - Kalendermarketing - calovo
Last scanned Jul 27, 2026, 10:43 AM · 1 view
Overall score
Fair
Summary
Kalender kostenlos abonnieren und aktuelle Termine direkt im eigenen Kalender nutzen. This website uses PHP hosted on AWS behind CloudFront CDN. SEO is good (85/100) and accessibility is fair (60/100). Security scores fair (65/100) and performance excellent (90/100). Top issue: Title longer than 60 characters.
calovo
Kalender kostenlos abonnieren und aktuelle Termine direkt im eigenen Kalender nutzen.
- United States
- Hosted on AWS
Top issues to fix
7 issues found · 4 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.
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.
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.
+1 more issue — details in the sections below.
SEO
2 issue(s) found
Performance
1.35 s
Security
HTTPS & header checks
Accessibility
2 issue(s) found
Organization
Company details published in this site's own structured data.
calovo
Kalender kostenlos abonnieren und aktuelle Termine direkt im eigenen Kalender nutzen.
Contact
Email, phone, and address published on this site's own pages.
- presse@calovo.com
Meta tags
- Title
- Kalender aus der Bundesliga, von Städten, aus dem TV oder Schulferien kostenlos abonnieren - Kalendermarketing - calovo
- Description
- Kostenlos ausgewählte Kalender wie Bundesliga Spielpläne, Städte, Ferien oder Feiertage abonnieren. Einmal hinzufügen. Immer aktuell. 100% kostenlos.
- Canonical
- https://calovo.de/
- Language
- de
- Charset
- utf-8
- Viewport
- width=device-width, initial-scale=1.0, maximum-scale=1.0
- Robots meta
- Manifest
Technologies
Detected frameworks, languages, and tools.
Hosting & CDN
- Hosting provider
- AWS
- CDN provider
- CloudFront
- IP address
- 108.158.46.80
- ASN
- AS16509 (AMAZON-02 - Amazon.com, Inc., US)
DNS records
| Type | Value |
|---|---|
| A |
|
| AAAA | — |
| MX |
|
| TXT |
|
| NS |
|
| CAA | — |
| CNAME | — |
| IPv6 support | No |
TLS / SSL certificate
- Version
- TLS 1.3
- Issuer
- Amazon
- Subject
- calovo.de
- Valid from
- Jun 12, 2026
- Valid to
- Dec 26, 2026
- Days until expiry
- 152
- SAN domains
- calovo.de, www.calovo.com, calovo.com, www.calovo.de
Security headers
- Strict-Transport-SecurityMissing
- Content-Security-PolicyMissing
- X-Frame-OptionsMissing
- X-Content-Type-OptionsMissing
- Referrer-PolicyMissing
- Permissions-PolicyMissing
Compression: gzip · 0 cookie(s) observed
Content & assets
Headings
H1 0 · H2 10 · H3 59
Links
185 internal · 8 external · 0 broken
Images
50 total · 47 missing alt
Scripts / Styles
8 scripts · 7 stylesheets
JS / CSS size
246 KB · 223 KB
Page size
190 KB
Robots.txt & Sitemap
- robots.txt
- Found
- Disallow rules
- 0
- sitemap.xml
- Found
- URLs in sitemap
- -1
SEO issues
- Title longer than 60 characters
- No H1 heading found
Accessibility issues
- Over half of images are missing alt text
- No H1 heading found
Scan details
- Requested URL
- https://cal.to
- Final URL
- https://calovo.de
- HTTP status
- 200
- HTTP version
- HTTP/2
- Response time
- 1.35 s
- HTML size
- 190 KB
- Redirect chain
- https://cal.to → https://calovo.de
See something wrong on this report? Request a correction
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Frequently asked questions
- What technology does cal.to use?
- cal.to is built with PHP, jQuery.
- Is cal.to secure (HTTPS)?
- Yes. cal.to uses TLS 1.3 with a certificate issued by Amazon, valid until Dec 26, 2026.
- Who hosts cal.to?
- cal.to is hosted on AWS, behind CloudFront CDN.
- What is cal.to's SEO score?
- cal.to scored 85/100 for SEO in the latest analysis (great).
- What is cal.to's overall website score?
- cal.to has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.
- What company operates cal.to?
- cal.to is operated by calovo. Kalender kostenlos abonnieren und aktuelle Termine direkt im eigenen Kalender nutzen.
OpenGraph & Twitter Card
OpenGraph
Twitter Card