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SGSiteGraph

fosstodon.org

Fosstodon

Last scanned Jul 26, 2026, 4:25 AM · 1 view

85

Overall score

Great

Summary

Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite. This website is hosted on Fastly. SEO is fair (65/100) and accessibility is excellent (90/100). Security scores excellent (100/100) and performance excellent (90/100). Top issue: Meta description longer than 160 characters.

Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.

United States
Hosted on Fastly

Top issues to fix

5 issues found · 1 high priority

  • 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.

  • Meta description longer than 160 characters

    SEO

    Trim the meta description to under 160 characters to avoid truncation in search results.

  • 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.

65

SEO

5 issue(s) found

90

Performance

401 ms

100

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.

Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.

Meta tags

Title
Fosstodon
Description
Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1, viewport-fit=cover
Robots meta
Manifest
https://fosstodon.org/manifest

OpenGraph & Twitter Card

OpenGraph

og:title
Fosstodon
og:description
Fosstodon is an invite only Mastodon instance that is open to those who are interested in technology; particularly free & open source software. If you wish to join, contact us for an invite.
og:type
website
og:url
https://fosstodon.org/

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
151.101.195.52
ASN
AS54113 (FASTLY - Fastly, Inc., US)

DNS records

TypeValue
A
  • 151.101.195.52
  • 151.101.67.52
  • 151.101.131.52
  • 151.101.3.52
AAAA
  • 2a04:4e42:600::820
  • 2a04:4e42:400::820
  • 2a04:4e42:200::820
  • 2a04:4e42::820
MX
  • mx.zoho.eu
  • mx3.zoho.eu
  • mx2.zoho.eu
TXT
  • v=spf1 include:zoho.eu ~all
  • keybase-site-verification=tMLgeyMwgcDsIgA_71u6_wAfqyMS1YEYTwE-J91u8j8
  • zoho-verification=zb15506747.zmverify.zoho.eu
NS
  • dns43.cloudns.net
  • dns41.cloudns.net
  • dns42.cloudns.net
  • dns44.cloudns.net
CAA—
CNAME—
IPv6 supportYes

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
fosstodon.org
Valid from
May 30, 2026
Valid to
Aug 28, 2026
Days until expiry
33
SAN domains
*.fosstodon.org, fosstodon.org

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 · 17 stylesheets

JS / CSS size

134 KB · 341 KB

Page size

43.3 KB

Robots.txt & Sitemap

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

SEO issues

  • Meta description longer than 160 characters
  • 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://fosstodon.org
Final URL
https://fosstodon.org
HTTP status
200
HTTP version
HTTP/2
Response time
401 ms
HTML size
43.3 KB
Redirect chain
https://fosstodon.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does fosstodon.org use?
We did not detect any specific technologies for fosstodon.org in the latest scan.
Is fosstodon.org secure (HTTPS)?
Yes. fosstodon.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Aug 28, 2026.
Who hosts fosstodon.org?
fosstodon.org is hosted on Fastly, behind Fastly CDN.
What is fosstodon.org's SEO score?
fosstodon.org scored 65/100 for SEO in the latest analysis (fair).
What is fosstodon.org's overall website score?
fosstodon.org has an overall SiteGraph score of 85/100, combining SEO, performance, security, and accessibility.