Validator.w3.org - SEO Checker

Overview of the SEO Check
Meta information
100% 
Page quality
68% 
Page structure
100% 
Link structure
97% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.19 s
File size
26.50 kB
Words
759
Media files
4
Number of links
20 internal / 18 external

Task list of SEO Improvements

  • Add a viewport tag.Hint!
  • Hint! Get help creating content by Articoolo

Meta specifications

Title
(Critically important)
The W3C Markup Validation Service
The length of the page title is perfect. (290 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
W3C's easy-to-use markup validation service, based on SGML and XML parsers.
The length of the meta description is perfect. (481 pixels out of 1000 max pixel length)
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
keywordsHTML, HyperText Markup Language, Validation, W3C Markup Validation Service
descriptionW3C's easy-to-use markup validation service, based on SGML and XML parsers.
langen
Content-Typetext/html;charset=utf-8

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Page quality

Content
(Critically important)
Only 2 paragraph/s was/were found on this page.
This page contains 759 words. That's ok.
9.1% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
There are no duplicates on the site.
The average number of words per sentence of 20.25 words is good.
Frames
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
No viewpoint tag is provided.
No Apple touch icon is specified.
This website only loads 2 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 15 tags for this page.
Image SEO
(Somewhat important)
No images without alt attributes found.
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.
Ads
(Somewhat important)
No ads were found on this page.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

Media list

URLAlt attributeTitle
http://validator.w3.org/images/w3c.pngW3C Logo
http://www.w3.org/Icons/WWW/w3c_home_nbW3C
/images/opensource-55x48.pngOpen-SourceWe are building certified Open Source/Free Software. - see www.opensource.org
...w3.org/QA/Tools/I_heart_validatorI heart Validator logo Validators Donation Program

Page structure

H1 heading
(Critically important)
Markup Validation Service W3C Logo
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Markup Validation Service W3C Logo
Some anchor texts are used more than once.
The amount of internal links is ok.
None of the anchor texts is too long.
All internal links don't have dynamic parameters.
There are 18 external links on this page.
LinkAttributesAnchor text
http://www.w3.org/External IMG-ALT W3C Logo
http://validator.w3.org/Markup Validation Service
http://validator.w3.org/Anchor Validate by URI
http://validator.w3.org/Anchor Validate by File Upload
http://validator.w3.org/Anchor Validate by Direct Input
http://validator.w3.org/Anchor More Options
http://validator.w3.org/Anchor Text duplicate More Options
http://www.w3.org/QA/2005/01/V...External information page
http://validator.w3.org/Anchor Text duplicate More Options
/docs/help.htmlmarkup validity
A-TITLE What is markup validation?
https://validator.w3.org/feed/RSS/Atom feeds
A-TITLE Feed validator, hosted at W3C
http://jigsaw.w3.org/css-valid...External CSS stylesheets
A-TITLE W3C CSS Validation Service
https://validator.w3.org/mobile/MobileOK content
A-TITLE MobileOK Checker
/checklinkfind broken links
A-TITLE W3C Link Checker
http://www.w3.org/QA/Tools/External other validators and tools
https://validator.w3.org/nunon-DTD-based validator
http://validator.w3.org/Home
A-TITLE Go to the Home Page for The W3C Markup Validation Service
/about.htmlAbout...
A-TITLE Information About this Service
/whatsnew.htmlNews
A-TITLE The changes made to this service recently
http://validator.w3.org/docs/Docs
A-TITLE Documentation for this Service
/docs/help.htmlHelp & FAQ
A-TITLE Help and answers to frequently asked questions
/feedback.htmlFeedback
A-TITLE How to provide feedback on this service
/contribute.htmlContribute
A-TITLE How to contribute to the validator project
http://www.w3.org/StatusExternal IMG-ALT W3C
A-TITLE W3C's Open Source, bringing you free Web quality tools and more
http://www.w3.org/QA/Tools/DonateExternal IMG-ALT I heart Validator logo
/whatsnew.htmlv1.3+hg
http://www.w3.org/Consortium/L...External Anchor Copyright
http://www.w3.org/External Text duplicate W3C
http://www.csail.mit.edu/External MIT
http://www.ercim.eu/External ERCIM
http://www.keio.ac.jp/External Keio
http://ev.buaa.edu.cn/External Subdomain Beihang
http://www.w3.org/Consortium/L...External Anchor liability
http://www.w3.org/Consortium/L...External Anchor trademark
http://www.w3.org/Consortium/L...External document use
http://www.w3.org/Consortium/L...External software licensing
http://www.w3.org/Consortium/L...External Anchor public
http://www.w3.org/Consortium/L...External Anchor Member

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
This website uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.19 seconds.
This website only loads 1 CSS files. That's ok.
This website only loads 2 JavaScript files. That's good!
The file size of the HTML document is fine (27 kB).

HTTP Response Header

NameValue
dateSun, 14 Jul 2019 06:20:16 GMT
serverApache/2.4.38 (Debian)
cache-controlmax-age=604800
expiresSun, 21 Jul 2019 06:20:16 GMT
varyAccept-Encoding
content-encodinggzip
content-length5080
content-typetext/html; charset=utf-8
accept-rangesbytes
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This website is referenced by wikipedia.
This website has excellent links from other websites.
This website has backlinks from 409,349 referring domains.
This website has 2,153,107,545 backlinks.
This website has backlinks from 191,535 different ip addresses.
Facebook popularity
(Somewhat important)
This website has social activity like shares, comments or likes on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.

Robots.txt

#
# robots.txt for validator.w3.org
#

User-agent: *
Disallow: /check
Disallow: /feed/check
Disallow: /checklink
Disallow: /mobile/check
Disallow: /mobile/alpha
Disallow: /css-validator
Disallow: /unicorn/check
Disallow: /http-checker
Disallow: /i18n-checker/check
Disallow: /nu

Facebook popularity

Shares / Likes / Comments
7,670

Only the data for the given URL is shown. We cannot determine the social actions for a linked fan page.

Search preview

The W3C Markup Validation Service
http://validator.w3.org/
W3C's easy-to-use markup validation service, based on SGML and XML parsers.

Most important keywords

Seobility found the following keywords. You can check the keyword optimization of this page for each keyword.

KeywordResultRecheck
W3C70%Check
W3C Markup70%Check
Service68%Check
Validation Service68%Check
Markup68%Check
Markup Validation Service68%Check
W3C Markup Validation Service66%Check
Source Clean up Markup45%Check
HTML Validation44%Check
validator40%Check

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