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asciidoctor.org

Asciidoctor | A fast, open source text processor and publishing toolchain for converting AsciiDoc content to HTML5, DocBook, PDF, and other formats.

Last scanned Aug 24, 2026, 1:22 PM · 1 view

83

Overall score

Great

Summary

A comprehensive and user-friendly publishing toolchain for the AsciiDoc writing format. This website is hosted on Google Cloud. SEO is fair (65/100) and accessibility is excellent (100/100). Security scores good (75/100) and performance excellent (100/100). Top issue: Title longer than 60 characters.

A comprehensive and user-friendly publishing toolchain for the AsciiDoc writing format. Converts AsciiDoc to HTML5, DocBook, PDF, and other formats.

United States
Hosted on Google Cloud

Top issues to fix

9 issues found · 1 high priority

  • 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.

  • Title longer than 60 characters

    SEO

    Shorten the title to under 60 characters so search results don't truncate it.

  • 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.

65

SEO

6 issue(s) found

100

Performance

450 ms

75

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.

A comprehensive and user-friendly publishing toolchain for the AsciiDoc writing format. Converts AsciiDoc to HTML5, DocBook, PDF, and other formats.

GitHubX (Twitter)X (Twitter)GitHubGitHubGitHubGitHub

Contact

Email, phone, and address published on this site's own pages.

Meta tags

Title
Asciidoctor | A fast, open source text processor and publishing toolchain for converting AsciiDoc content to HTML5, DocBook, PDF, and other formats.
Description
A comprehensive and user-friendly publishing toolchain for the AsciiDoc writing format. Converts AsciiDoc to HTML5, DocBook, PDF, and other formats.
Canonical
Language
en
Charset
utf-8
Viewport
width=device-width, initial-scale=1.0
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.

No technologies detected.

Hosting & CDN

Hosting provider
Google Cloud
CDN provider
Netlify
IP address
104.198.14.52
ASN
AS396982 (GOOGLE-CLOUD-PLATFORM - Google LLC, US)

DNS records

TypeValue
A
  • 104.198.14.52
AAAA—
MX
  • fb.mail.gandi.net
  • spool.mail.gandi.net
TXT—
NS
  • ns-35-b.gandi.net
  • ns-1-a.gandi.net
  • ns-123-c.gandi.net
CAA—
CNAME—
IPv6 supportNo

TLS / SSL certificate

Version
TLS 1.3
Issuer
Let's Encrypt
Subject
asciidoctor.org
Valid from
Aug 17, 2026
Valid to
Nov 15, 2026
Days until expiry
82
SAN domains
asciidoctor.org, www.asciidoctor.org

Security headers

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

Compression: gzip · 0 cookie(s) observed

Content & assets

Headings

H1 2 · H2 14 · H3 14

Links

8 internal · 67 external · 0 broken

Images

4 total · 0 missing alt

Scripts / Styles

7 scripts · 1 stylesheets

JS / CSS size

91.0 KB · 101 KB

Page size

37.8 KB

Robots.txt & Sitemap

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

SEO issues

  • Title longer than 60 characters
  • Missing canonical link
  • Multiple H1 headings found
  • No structured data (JSON-LD) found
  • Missing OpenGraph tags
  • sitemap.xml not found

Accessibility issues

No accessibility issues detected.

Scan details

Requested URL
https://asciidoctor.org
Final URL
https://asciidoctor.org
HTTP status
200
HTTP version
HTTP/2
Response time
450 ms
HTML size
37.8 KB
Redirect chain
https://asciidoctor.org

See something wrong on this report? Request a correction

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Frequently asked questions

What technology does asciidoctor.org use?
We did not detect any specific technologies for asciidoctor.org in the latest scan.
Is asciidoctor.org secure (HTTPS)?
Yes. asciidoctor.org uses TLS 1.3 with a certificate issued by Let's Encrypt, valid until Nov 15, 2026.
Who hosts asciidoctor.org?
asciidoctor.org is hosted on Google Cloud, behind Netlify CDN.
What is asciidoctor.org's SEO score?
asciidoctor.org scored 65/100 for SEO in the latest analysis (fair).
What is asciidoctor.org's overall website score?
asciidoctor.org has an overall SiteGraph score of 83/100, combining SEO, performance, security, and accessibility.