Commonmark.org - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
91% 
Page structure
76% 
Link structure
100% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.23 s
File size
9.10 kB
Words
564
Media files
1
Number of links
10 internal / 15 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
CommonMark
The page title is too short. (127 pixels of 580 max pixel length) Optimize title
The page title is only one word.
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)
No canonical link is specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
There are no alternate links specified on this page.
Other meta tags
(Somewhat important)
There is no rel next meta tag on this page.
There is no rel prev meta tag on this page.
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.
Doctype
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
Favicon
(Nice to have)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
langen
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 564 words. That's ok.
36.5% of the text are stop words.
The page contains a listing, which indicates a good text layout.
11 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 18 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The amount of tags is very high (13). We recommend using a maximum of 11 tags for this page.
The following tag is repeated too often: john macfarlane
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)
No additional page markup was found.
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

URLAlt attributeTitle
/images/markdown-mark.pngMarkdown Logo

Page structure

H1 heading
(Critically important)
CommonMark
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (10 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 CommonMark
H2 A strongly defined, highly compatible specification of Markdown
H2 What is Markdown?
H2 Who created Markdown?
H2 Why is CommonMark needed?
H2 Who are you today?
H2 Who were you in 2014, when this started?
H2 How can I help?
H2 Where can I find it?
H2 When is the spec final?
H3 spec.commonmark.org
H3 code.commonmark.org
H3 talk.commonmark.org
H3 commonmark.org/help
H3 spec.commonmark.org/dingus/
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 15 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://commonmark.org/Anchor No Text
https://commonmark.org/help/Learn Markdown in 60 Seconds
https://commonmark.org/Anchor No Text
https://en.wikipedia.org/wiki/...External Subdomain Anchor developed in 2004 by John Gruber in collaboration with Aaron Swartz
https://commonmark.org/Anchor No Text
https://daringfireball.net/pro...External canonical description of Markdown’s syntax
https://github.com/michelf/mdt...External MDTest
https://johnmacfarlane.net/bab...External Babelmark
https://github.com/dcurtis/mar...External IMG-ALT Markdown Logo
https://commonmark.org/Anchor No Text
https://commonmark.org/Anchor No Text
https://commonmark.org/Anchor No Text
https://code.commonmark.org/External Subdomain reference implementations
https://github.com/jgm/CommonM...External find a community implementation
https://talk.commonmark.org/External Subdomain No Text
https://spec.commonmark.org/External Subdomain strongly specify Markdown
https://commonmark.org/Anchor No Text
https://spec.commonmark.org/External Subdomain spec.commonmark.org
https://code.commonmark.org/External Subdomain code.commonmark.org
https://talk.commonmark.org/External Subdomain talk.commonmark.org
https://www.discourse.org/External Subdomain Discourse
https://commonmark.org/helpcommonmark.org/help
https://spec.commonmark.org/di...External Subdomain spec.commonmark.org/dingus/
https://commonmark.org/Anchor No Text
https://github.com/commonmark/...External dozens of programming languages

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://commonmark.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.23 seconds.
The file size of the HTML document is fine (9 kB).

HTTP Response Header

NameValue
serverGitHub.com
content-typetext/html; charset=utf-8
last-modifiedSat, 27 Apr 2024 18:54:07 GMT
access-control-allow-origin*
etagW/"662d49cf-244d"
expiresTue, 05 Nov 2024 08:54:28 GMT
cache-controlmax-age=600
content-encodinggzip
x-proxy-cacheMISS
x-github-request-id96C8:311F92:C43036:C9F897:6729DAEC
accept-rangesbytes
age0
dateSat, 16 Nov 2024 20:27:44 GMT
via1.1 varnish
x-served-bycache-fra-eddf8230147-FRA
x-cacheHIT
x-cache-hits0
x-timerS1731788864.169043,VS0,VE99
varyAccept-Encoding
x-fastly-request-idcaba13a2ecdfbee547d676076a1fb8c32c585b5f
content-length2905
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 5,174 referring domains.
This page has 140,889 backlinks.
This page has backlinks from 3,358 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

commonmark.org
CommonMark

Most important keywords

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

KeywordResultRecheck
CommonMark78%Check
org54%Check
Markdown51%Check
spec47%Check
Markdown fans44%Check
environment or language44%Check
specification43%Check
help43%Check
syntax39%Check
John39%Check
Show more keywords and terms

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