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SGSiteGraph

esm.ubuntu.com

Index of /

Last scanned Jul 23, 2026, 12:53 PM

85

Overall score

Great

Summary

This website uses Nginx hosted on CANONICAL-AS - Canonical Group Limited, GB. SEO is fair (60/100) and accessibility is good (85/100). Security scores excellent (100/100) and performance excellent (100/100). Top issue: Missing meta description.

United Kingdom
Hosted on CANONICAL-AS - Canonical Group Limited, GB

Top issues to fix

9 issues found · 2 high priority

  • Missing meta description

    SEO

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

  • Missing viewport meta tag

    Accessibility

    Add <meta name="viewport" content="width=device-width, initial-scale=1"> — without it the site is broken on mobile.

  • TLS certificate expires in 20 days

    Security

    Renew soon or enable auto-renewal to avoid a browser-warning outage.

  • Missing canonical link

    SEO

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

  • No structured data (JSON-LD) found

    SEO

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

  • Missing OpenGraph tags

    SEO

    Add og:title/og:description/og:image so shared links render a proper preview card.

+3 more issues — details in the sections below.

60

SEO

6 issue(s) found

100

Performance

125 ms

100

Security

HTTPS & header checks

85

Accessibility

2 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.

Meta tags

Title
Index of /
Description
Canonical
Language
Charset
Viewport
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.

Nginx

Hosting & CDN

CDN provider
—
IP address
185.125.190.24
ASN
AS41231 (CANONICAL-AS - Canonical Group Limited, GB)

DNS records

TypeValue
A
  • 185.125.190.24
  • 185.125.190.75
  • 185.125.190.23
  • 91.189.91.47
  • 91.189.91.46
AAAA
  • 2001:67c:1562::21
  • 2620:2d:4000:1::2e
  • 2620:2d:4000:1::30
  • 2620:2d:4000:1::2f
  • 2001:67c:1562::22
MX—
TXT—
NS—
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
esm.ubuntu.com
Valid from
May 14, 2026
Valid to
Aug 12, 2026
Days until expiry
20
SAN domains
esm.ubuntu.com

Security headers

  • Strict-Transport-SecurityEnabled
  • Content-Security-PolicyEnabled
  • X-Frame-OptionsEnabled
  • X-Content-Type-OptionsEnabled
  • Referrer-PolicyMissing
  • Permissions-PolicyMissing

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 1 · H2 0 · H3 0

Links

15 internal · 0 external · 0 broken

Images

0 total · 0 missing alt

Scripts / Styles

0 scripts · 0 stylesheets

JS / CSS size

0 B · 0 B

Page size

1.7 KB

Robots.txt & Sitemap

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

SEO issues

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

Accessibility issues

  • Missing <html lang> attribute
  • Missing viewport meta tag

Scan details

Requested URL
https://esm.ubuntu.com
Final URL
https://esm.ubuntu.com
HTTP status
200
HTTP version
HTTP/2
Response time
125 ms
HTML size
1.7 KB
Redirect chain
https://esm.ubuntu.com

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does esm.ubuntu.com use?
esm.ubuntu.com is built with Nginx.
Is esm.ubuntu.com secure (HTTPS)?
Yes. esm.ubuntu.com uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 12, 2026.
Who hosts esm.ubuntu.com?
esm.ubuntu.com is hosted on CANONICAL-AS - Canonical Group Limited, GB.
What is esm.ubuntu.com's SEO score?
esm.ubuntu.com scored 60/100 for SEO in the latest analysis (fair).
What is esm.ubuntu.com's overall website score?
esm.ubuntu.com has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.