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jerf.com

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Last scanned Jul 22, 2026, 11:05 PM

76

Overall score

Fair

Summary

This website uses jQuery hosted on HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE. SEO is fair (55/100) and accessibility is excellent (90/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing meta description.

Germany
Hosted on HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE

Top issues to fix

10 issues found · 4 high priority

  • Missing Strict-Transport-Security header

    Security

    Add HSTS so browsers always use HTTPS — this closes the protocol-downgrade attack window.

  • Missing Content-Security-Policy header

    Security

    Add a CSP to control which sources can run scripts — the strongest single defense against XSS.

  • Missing meta description

    SEO

    Add a ~150-character meta description to control your search-result snippet and lift click-through rate.

  • No H1 heading found

    SEO

    Add 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

    Security

    Add X-Content-Type-Options: nosniff to stop MIME-sniffing attacks.

  • Missing X-Frame-Options header

    Security

    Add X-Frame-Options (or a CSP frame-ancestors rule) to prevent clickjacking via hidden iframes.

+4 more issues — details in the sections below.

55

SEO

6 issue(s) found

100

Performance

257 ms

65

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Not enough scan history yet to show a trend — check back after this site has been re-scanned a few more times.

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Home
Description
Canonical
Language
en-US
Charset
UTF-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
—
og:description
—
og:type
—
og:url
—

Twitter Card

twitter:card
—
twitter:title
—
twitter:description
—

Technologies

Detected frameworks, languages, and tools.

jQuery

Hosting & CDN

CDN provider
—
IP address
5.161.89.95
ASN
AS213230 (HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE)

DNS records

TypeValue
A
  • 5.161.89.95
AAAA—
MX
  • jerf.com
TXT
  • v=spf1 ip4:5.161.89.95 +a +mx +ip4:45.79.181.177 +ip4:167.99.238.135 ~all
NS
  • ns19.modserver.com
  • ns20.modserver.com
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
cpcalendars.jerf.com
Valid from
May 29, 2026
Valid to
Aug 27, 2026
Days until expiry
34
SAN domains
cpanel.jerf.com, cpcalendars.jerf.com, cpcontacts.jerf.com, jerf.com, mail.jerf.com, webdisk.jerf.com, webmail.jerf.com, www.jerf.com

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 0 · H3 0

Links

0 internal · 0 external · 0 broken

Images

24 total · 0 missing alt

Scripts / Styles

11 scripts · 4 stylesheets

JS / CSS size

24.2 KB · 22.4 KB

Page size

37.8 KB

Robots.txt & Sitemap

robots.txt
Not found
Disallow rules
0
sitemap.xml
Found
URLs in sitemap
1

SEO issues

  • Missing meta description
  • Missing canonical link
  • No H1 heading found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • robots.txt not found

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://jerf.com
Final URL
https://jerf.com
HTTP status
200
HTTP version
HTTP/2
Response time
257 ms
HTML size
37.8 KB
Redirect chain
https://jerf.com

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does jerf.com use?
jerf.com is built with jQuery.
Is jerf.com secure (HTTPS)?
Yes. jerf.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 27, 2026.
Who hosts jerf.com?
jerf.com is hosted on HETZNER-CLOUD2-AS - Hetzner Online GmbH, DE.
What is jerf.com's SEO score?
jerf.com scored 55/100 for SEO in the latest analysis (fair).
What is jerf.com's overall website score?
jerf.com has an overall SiteGraph score of 76/100, combining SEO, performance, security, and accessibility.