Scikit-learn.org - SEO Checker

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Overview of the SEO Check
Meta information
51% 
Page quality
44% 
Page structure
58% 
Link structure
0% 
Server
0% 
External factors
100% 
SEO Score
Response time
0.06 s
File size
2.00 kB
Words
0
Media files
0
Number of links
0 internal / 0 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
scikit-learn: machine learning in Python — scikit-learn 0.16.1 documentation
The page title should be shorter than 580 pixels. It is 679 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://scikit-learn.org/stable/index.html
The specified canonical link points to a different page.
Language
(Somewhat important)
Server location: United States of America
The language is not specified in the HTML markup.
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel prev meta tag on this page.
Rel next URL https://scikit-learn.org/tutorial/index.html
The rel next and prev tags are set correctly.
Domain
(Somewhat important)
The domain is no subdomain.
The domain length is good.
The domain does not contain non-latin characters.
Page URL
(Somewhat important)
No parameters were found in the URL.
No session ID was found in the URL.
The URL does not have too many subdirectories.
Charset encoding
(Somewhat important)
The charset encoding (UTF-8) is set correctly.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0
refresh0; url=http://scikit-learn.github.io/stable
Content-Typetext/html; charset=UTF-8
nexttutorial/index.html

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Page quality

Content
(Critically important)
There are only 0 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
No paragraphs were detected.
No placeholders texts or images were found.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
This page uses Google authorship information without an image.
HTTPS
(Somewhat important)
This website uses HTTPS to protect privacy and integrity of the exchanged data.
All included files are also transferred via HTTPS.

Media list

No media files were found.

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
There are no headings specified on the page. Headings are important for search engine optimization and help to structure your content.

Heading structure

No headings were found.
This page seems to be an entry page, because only very few links were found.
There are no external links on this page.

Found links on this page

No internal links were found.

Server configuration

HTTP redirects
(Critically important)
This page redirects to another page due to a meta refresh redirect tag. Redirects should only be done by HTTP redirects.
HTTP header
(Important)
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.06 seconds.
The file size of the HTML document is fine (2 kB).

HTTP Response Header

NameValue
serverGitHub.com
content-typetext/html; charset=utf-8
x-origin-cacheHIT
last-modifiedFri, 25 Jul 2025 23:47:47 GMT
access-control-allow-origin*
etagW/"688417a3-80a"
expiresSat, 26 Jul 2025 17:32:07 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id5888:195110:1FEAB61:20203B2:68850EBF
accept-rangesbytes
age542
dateSat, 26 Jul 2025 17:33:54 GMT
via1.1 varnish
x-served-bycache-fra-eddf8230140-FRA
x-cacheHIT
x-cache-hits0
x-timerS1753551234.319100,VS0,VE2
varyAccept-Encoding
x-fastly-request-id31910ce255ca8e051ad8c227a62c1c6026084a28
content-length824
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 3,245 referring domains.
This page has 15,145 backlinks.
This page has backlinks from 2,231 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

Most important keywords

Following keywords were found. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
scikit-learn23%Check
scikit-learn 0.16.117%Check
Python scikit-learn16%Check
scikit-learn 0.16.1 documentation15%Check
Python scikit-learn 0.16.113%Check
machine11%Check
learning11%Check
Machine Learning11%Check
Python10%Check
documentation10%Check

Automatically check scikit-learn.org including all subpages at once!

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