readthedocs.org

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readthedocs.org is ranked #4,066 in the Tranco list of the world's most popular websites (list of Oct 13, 2026), down 81 places in four weeks. The domain was registered on Aug 12, 2010, 16 years, 2 months ago, through Cloudflare, Inc., and is paid up until Aug 12, 2029. Its homepage uses Font Awesome. It is served through Cloudflare.

Global rank

#4,066

▼ 68 this week

Domain age

16 years

since Aug 12, 2010

Technologies

detected on the homepage

SEO score

85/100

homepage checks

Popularity rank

#4,066 of the top 1 million sites in the Tranco research ranking, which averages several traffic and DNS sources over 30 days. Best rank in the period shown: #1,009.

Weekly Tranco rank (lower is more popular).

See where readthedocs.org sits in the top 10,000

Domain registration

Registered: Aug 12, 2010 (16 years, 2 months ago)
Expires: Aug 12, 2029
Registrar: Cloudflare, Inc.
Name servers: ivan.ns.cloudflare.com, tegan.ns.cloudflare.com
DNSSEC: Not signed

From the registry's public RDAP record, checked Oct 1, 2026.

Technology stack

UI frameworks & fonts

Font Awesome

CDN

Cloudflare

Detected from the homepage HTML and response headers on Oct 14, 2026. Tools loaded only after scripts run (or after consent banners) may be missing.

Homepage SEO check

Checked from the HTML our scanner received on Oct 14, 2026. Content added later by JavaScript isn't counted.

85/100

https://about.readthedocs.com/?ref=app.readthedocs.org

Full featured documentation deployment platform - Read the Docs

Read the Docs is a documentation building and hosting platform aimed at helping developers creating documentation from code with versioned documentation, integrated search, pull request previews and more.

16 passed · 7 warnings · 0 failed

Content

✓Title63 characters
!Meta description204 characters — aim for 50–170
✓H1 headingExactly one H1
✓Subheadings5 H2 headings
✓Image alt textAll 11 images have alt text
✓Content lengthAbout 738 words

Indexing

✓IndexableNo noindex directive
!Canonical URLMissing
✓robots.txtFound
✓XML sitemapFound
✓Language attributeen
!Structured dataNo JSON-LD or microdata

Social sharing

✓Open GraphTitle, description and image set
!Twitter / X cardMissing

Technical

✓HTTPSServed over HTTPS
✓Mobile viewportFound
✓FaviconFound
✓Character encodingutf-8

Security headers

!Strict-Transport-SecurityNot set
!Content-Security-PolicyNot set
!Clickjacking protectionNot set
✓X-Content-Type-OptionsSet
✓Referrer-PolicySet

Server response

Final URL: https://about.readthedocs.com/?ref=app.readthedocs.org
HTTP status: 200
Server: cloudflare
Response time: 3.36 s (first byte 3.36 s, from our scanner in a US data centre)
HTML size: 33 KB
Compression: gzip

Sites ranked near readthedocs.org

Rank	Website	Registered	Built with
#4,061	cox.net	1995	Amazon CloudFront, Fastly
#4,062	ketchcdn.com	2020	—
#4,063	bk6bba-resources.com	2021	—
#4,064	vkuseraudio.net	2017	—
#4,065	bitrix24.com	2011	—
#4,067	ebay.ca	2000	Akamai
#4,068	grandviewresearch.com	2013	cdnjs, Cloudflare, jsDelivr
#4,069	britishairways.com	1998	Next.js, React, Akamai
#4,070	theiconic.com.au	—	Cloudflare
#4,071	tlivesdk.com	2024	—

Questions about readthedocs.org

How popular is readthedocs.org?

readthedocs.org is #4,066 worldwide in the Tranco list published Oct 13, 2026.

How old is readthedocs.org?

readthedocs.org was registered on Aug 12, 2010, which makes the domain 16 years, 2 months old.

What is readthedocs.org built with?

We detected Font Awesome and Cloudflare on its homepage.

Who is the registrar of readthedocs.org?

Cloudflare, Inc., according to the registry's RDAP record.