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SGSiteGraph

hertzen.com

Niklas von Hertzen

Last scanned Jul 26, 2026, 11:19 AM

84

Overall score

Great

Summary

Front-end web developer and a student. This website uses Google Analytics hosted on Cloudflare behind Cloudflare CDN. SEO is good (75/100) and accessibility is excellent (100/100). Security scores fair (65/100) and performance excellent (100/100). Top issue: Missing canonical link.

Front-end web developer and a student

United States
Hosted on Cloudflare

Top issues to fix

9 issues found · 2 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 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.

  • Missing canonical link

    SEO

    Add <link rel="canonical"> so search engines know which URL variant to index.

  • Multiple H1 headings found

    SEO

    Keep a single H1 per page and demote the others to H2/H3.

+3 more issues — details in the sections below.

75

SEO

4 issue(s) found

100

Performance

305 ms

65

Security

HTTPS & header checks

100

Accessibility

0 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.

Organization

Company details published in this site's own structured data.

Front-end web developer and a student

X (Twitter)GitHubFacebookX (Twitter)

Meta tags

Title
Niklas von Hertzen
Description
Front-end web developer and a student
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Niklas von Hertzen
og:description
—
og:type
blog
og:url
http://hertzen.com

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

jQueryGoogle AnalyticsCloudflare Analytics

Hosting & CDN

Hosting provider
Cloudflare
CDN provider
Cloudflare
IP address
104.21.65.51
ASN
AS13335 (CLOUDFLARENET - Cloudflare, Inc., US)

DNS records

TypeValue
A
  • 104.21.65.51
  • 172.67.140.170
AAAA
  • 2606:4700:3037::ac43:8caa
  • 2606:4700:3037::6815:4133
MX
  • _dc-mx.1862c89ca15d.hertzen.com
TXT
  • v=spf1 ip4:74.52.142.50 a mx include:websitewelcome.com ~all
NS
  • lady.ns.cloudflare.com
  • igor.ns.cloudflare.com
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
hertzen.com
Valid from
Jul 21, 2026
Valid to
Oct 19, 2026
Days until expiry
82
SAN domains
hertzen.com, *.hertzen.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 4 · H2 7 · H3 6

Links

1 internal · 22 external · 1 broken

Images

6 total · 0 missing alt

Scripts / Styles

7 scripts · 1 stylesheets

JS / CSS size

125 KB · 115 B

Page size

15.9 KB

Robots.txt & Sitemap

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

SEO issues

  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://hertzen.com
Final URL
https://hertzen.com
HTTP status
200
HTTP version
HTTP/2
Response time
305 ms
HTML size
15.9 KB
Redirect chain
https://hertzen.com

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Frequently asked questions

What technology does hertzen.com use?
hertzen.com is built with jQuery, Google Analytics, Cloudflare Analytics.
Is hertzen.com secure (HTTPS)?
Yes. hertzen.com uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 19, 2026.
Who hosts hertzen.com?
hertzen.com is hosted on Cloudflare, behind Cloudflare CDN.
What is hertzen.com's SEO score?
hertzen.com scored 75/100 for SEO in the latest analysis (fair).
What is hertzen.com's overall website score?
hertzen.com has an overall SiteGraph score of 84/100, combining SEO, performance, security, and accessibility.