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SGSiteGraph

html5up.net

HTML5 UP! Responsive HTML5 and CSS3 Site Templates

Last scanned Jul 29, 2026, 4:00 PM · 9 views

86

Overall score

Great

Summary

Responsive HTML5 and CSS3 site templates designed by @ajlkn. This website uses Google Analytics behind Cloudflare CDN. SEO is good (80/100) and accessibility is excellent (90/100). Security scores good (75/100) and performance excellent (100/100). Top issue: No structured data (JSON-LD) found.

Responsive HTML5 and CSS3 site templates designed by @ajlkn.

Top issues to fix

8 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.

  • No structured data (JSON-LD) found

    SEO

    Add JSON-LD (Organization, Article, Product…) to become eligible for rich results.

  • robots.txt not found

    SEO

    Publish /robots.txt with a Sitemap: directive to guide crawlers.

  • sitemap.xml not found

    SEO

    Publish an XML sitemap and reference it from robots.txt to speed up page discovery.

+2 more issues — details in the sections below.

80

SEO

3 issue(s) found

100

Performance

250 ms

75

Security

HTTPS & header checks

90

Accessibility

1 issue(s) found

Score history

-1 overall since Jul 21, 2026

Overall
86
SEO
80
Security
75
Performance
100
Accessibility
90

Organization

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

Responsive HTML5 and CSS3 site templates designed by @ajlkn.

X (Twitter)X (Twitter)

Meta tags

Title
HTML5 UP! Responsive HTML5 and CSS3 Site Templates
Description
Responsive HTML5 and CSS3 site templates designed by @ajlkn.
Canonical
https://html5up.net/
Language
Charset
utf-8
Viewport
width=device-width, initial-scale=1, user-scalable=no
Robots meta
Manifest

OpenGraph & Twitter Card

OpenGraph

og:title
HTML5 UP
og:description
Responsive HTML5 and CSS3 site templates designed by @ajlkn and released under the Creative Commons license.
og:type
article
og:url
http://html5up.net/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

Google AnalyticsCloudflare Analytics

Hosting & CDN

Hosting provider
—
CDN provider
Cloudflare
IP address
—
ASN
—

DNS records

TypeValue
A—
AAAA—
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Google Trust Services
Subject
html5up.net
Valid from
Jul 9, 2026
Valid to
Oct 7, 2026
Days until expiry
69
SAN domains
html5up.net, *.html5up.net

Security headers

  • Strict-Transport-SecurityMissing
  • Content-Security-PolicyMissing
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsMissing
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 45 · H3 0

Links

90 internal · 4 external · 20 broken

Images

44 total · 0 missing alt

Scripts / Styles

4 scripts · 1 stylesheets

JS / CSS size

141 B · 0 B

Page size

29.4 KB

Robots.txt & Sitemap

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

SEO issues

  • No structured data (JSON-LD) found
  • robots.txt not found
  • sitemap.xml not found

Accessibility issues

  • Missing <html lang> attribute

Scan details

Requested URL
https://html5up.net
Final URL
https://html5up.net
HTTP status
200
HTTP version
HTTP/2
Response time
250 ms
HTML size
29.4 KB
Redirect chain
https://html5up.net

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does html5up.net use?
html5up.net is built with Google Analytics, Cloudflare Analytics.
Is html5up.net secure (HTTPS)?
Yes. html5up.net uses TLS 1.3 with a certificate issued by Google Trust Services, valid until Oct 7, 2026.
Who hosts html5up.net?
Hosting provider information for html5up.net is not available yet.
What is html5up.net's SEO score?
html5up.net scored 80/100 for SEO in the latest analysis (great).
What is html5up.net's overall website score?
html5up.net has an overall SiteGraph score of 86/100, combining SEO, performance, security, and accessibility.
Has html5up.net's score changed over time?
html5up.net's overall score has declined by 1 point (from 87 to 86) since Jul 21, 2026.