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SGSiteGraph

mastodon.online

Mastodon

Last scanned Jul 26, 2026, 5:17 AM · 1 view

83

Overall score

Great

Summary

A newer server of Mastodon, operated by Mastodon GmbH for the common good. This website is hosted on Fastly. SEO is fair (70/100) and accessibility is excellent (90/100). Security scores good (85/100) and performance excellent (90/100). Top issue: Missing canonical link.

A newer server of Mastodon, operated by Mastodon GmbH for the common good.

United States
Hosted on Fastly

Top issues to fix

5 issues found · 2 high priority

  • TLS certificate expires in 13 days

    Security

    Renew now (or enable auto-renewal) — an expired certificate blocks visitors with a full-page browser warning.

  • 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 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.

  • sitemap.xml not found

    SEO

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

70

SEO

4 issue(s) found

90

Performance

284 ms

85

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.

Organization

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

A newer server of Mastodon, operated by Mastodon GmbH for the common good.

Meta tags

Title
Mastodon
Description
A newer server of Mastodon, operated by Mastodon GmbH for the common good.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1, viewport-fit=cover
Robots meta
Manifest
https://mastodon.online/manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Mastodon
og:description
A newer server of Mastodon, operated by Mastodon GmbH for the common good.
og:type
website
og:url
https://mastodon.online/

Twitter Card

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

Technologies

Detected frameworks, languages, and tools.

No technologies detected.

Hosting & CDN

Hosting provider
Fastly
CDN provider
Fastly
IP address
151.101.193.55
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 151.101.193.55
  • 151.101.129.55
  • 151.101.1.55
  • 151.101.65.55
AAAA
  • 2a04:4e42:200::311
  • 2a04:4e42::311
  • 2a04:4e42:400::311
  • 2a04:4e42:600::311
MX
  • smtp.google.com
TXT
  • v=spf1 include:_spf.google.com include:helpscoutemail.com ~all
  • google-site-verification=Jp7rK19TgcNRLI0pAipAKamgTp3gOG9iVnQHAXCB9sQ
  • zoho-verification=zb93146435.zmverify.zoho.eu
  • k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCiBpJOUQdwksmOyWJy5KOvOItftWRp/e5Uf4WzWe3KiRs0mZGI+9Q+g0MIn7f3Eq7Z/JyDVI8FPXeTyunYEyAyAknkTIV0UT5YkTNyMQInHgdrLy8f4aJMvbJO3UVvsLK3Eg+++MIV37acnQ8rjfGgXVEIBESH4Hn9fv07AM/YvQIDAQAB
NS
  • ns1.exoscale.io
  • ns1.exoscale.ch
  • ns1.exoscale.net
  • ns1.exoscale.com
CAA
  • 0 issue "letsencrypt.org"
  • 0 issue "certainly.com"
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Certainly
Subject
mastodon.online
Valid from
Jul 10, 2026
Valid to
Aug 9, 2026
Days until expiry
13
SAN domains
files.mastodon.online, mastodon.online, www.mastodon.online

Security headers

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

0 total · 0 missing alt

Scripts / Styles

5 scripts · 18 stylesheets

JS / CSS size

135 KB · 340 KB

Page size

53.8 KB

Robots.txt & Sitemap

robots.txt
Found
Disallow rules
4
sitemap.xml
Not found
URLs in sitemap
0

SEO issues

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

Accessibility issues

  • No H1 heading found

Scan details

Requested URL
https://mastodon.online
Final URL
https://mastodon.online
HTTP status
200
HTTP version
HTTP/2
Response time
283 ms
HTML size
53.8 KB
Redirect chain
https://mastodon.online

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does mastodon.online use?
We did not detect any specific technologies for mastodon.online in the latest scan.
Is mastodon.online secure (HTTPS)?
Yes. mastodon.online uses TLS 1.3 with a certificate issued by Certainly, valid until Aug 9, 2026.
Who hosts mastodon.online?
mastodon.online is hosted on Fastly, behind Fastly CDN.
What is mastodon.online's SEO score?
mastodon.online scored 70/100 for SEO in the latest analysis (fair).
What is mastodon.online's overall website score?
mastodon.online has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.