Overview of the SEO Check
Meta information
89% 
Page quality
88% 
Page structure
88% 
Link structure
88% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.21 s
File size
32.60 kB
Words
1414
Media files
27
Number of links
105 internal / 16 external

Task list of SEO Improvements

  • Improve the text of the meta description.Important!
  • Use good alternative descriptions (alt attributes) for your images.Hint!

Meta specifications

Title
(Critically important)
World Wide Web Consortium (W3C)
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)
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.
The meta description should be shorter than 1000 pixels. It is currently 1028 pixels long.
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 XHTML 1.0 Strict 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
descriptionThe World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.
langen
Content-Typetext/html; charset=utf-8

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Page quality

Content
(Critically important)
This page contains 1414 words. That's ok.
23.5% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
17 paragraphs were found on this page.
The text content is perfect.
There are no duplicates on the site.
The average number of words per sentence of 19.83 words is good.
Frames
(Critically important)
This website does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width" is provided.
This website only loads 1 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: 21 february 2020
Image SEO
(Somewhat important)
1 images have no alt attribute. The content of alt attributes is used by search engines.
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
/2008/site/images/logo-w3c-mobile-lgW3C
/2008/site/images/search-buttonSearch
/2008/site/images/logo-shadowNo alt attribute provided
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-link.gifHeader link
...evelopers_Assets/W3C-Developers-Dark.pngW3C DevelopersW3C Developer Avenue
/2008/site/images/header-link.gifHeader link
...es/2020/01/machine-learning-workshop.pngW3C Web & Machine Learning Workshop page banner image
...g/news/files/2017/12/w3c-tag-300x300.jpgW3C TAG logo
/2019/12/vertical-rl-squat.pnga screenshot of vertical scripts for Making the World Wide Web worldwide in English, Traditional Chinese, Japanese and Korean
.../logos/web-assembly-logo-black-150px.pngWebAssembly black and white logo
...ts/graphics/w3cx-accessibility-intro.jpgillustration showing two persons looking at a computer; and WAI icons
/2008/site/images/icons/rss30RSS
/2008/site/images/icons/atom30Atom
/2008/site/images/header-linkHeader link
/2008/site/images/header-linkHeader link
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-linkHeader link
/2008/site/images/header-link.gifHeader link
/2008/site/images/header-linkHeader link
/Consortium/Member/Testimonial/Logo/1506Igalia logo
/2008/site/images/header-link.gifHeader link
/blog/wp-content/uploads/2017/12/still.jpgThumbnail of Web Accessibility and W3C Standards Video
...8/site/images/Twitter_bird_logo_2012.svgTwitter

Page structure

H1 heading
(Critically important)
W3C W3C
The H1 heading is too short (7 characters). It should be at least 20 Characters long.
Headings
(Important)
There are 27 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H1 W3C W3C
H2 Site Navigation
H2 News
H2 Talks and Appearances Header link
H2 Events Header link
H2 About W3C Header link
H2 Donations Header link
H2 W3C Blog Header link
H2 W3C is hiring Header link
H2 W3C Member Testimonial Header link
H2 Web Accessibility and W3C standards (Video) Header link
H2 Footer Navigation
H3 Web and Industry Header link
H3 Web for All Header link
H3 W3C Work Groups Header link
H3 Dev Resources Header link
H3 Member-only Home Header link
H3 Upcoming: W3C Workshop on Web & Machine Learning
H3 Updated Candidate Recommendation: Identifiers for WebRTC’s Statistics API
H3 W3C Advisory Committee Elects Technical Architecture Group
H3 W3C Recommends CSS Writing Modes to support International writing modes
H3 W3C Recommends WebAssembly to push the limits for speed, efficiency and responsiveness
H3 W3Cx Introduction to Web Accessibility – New Online Course
H3 Igalia
H3 Navigation
H3 Contact W3C
H3 W3C Updates
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The amount of internal links is ok.
All internal links don't have dynamic parameters.
There are 16 external links on this page.
LinkAttributesAnchor text
http://www.w3.org/IMG-ALT W3C
http://www.w3.org/standards/Standards
http://www.w3.org/participate/Participate
/Consortium/membershipMembership
http://www.w3.org/Consortium/About W3C
http://www.w3.org/standardsWeb and Industry
IMG-ALT Header link
http://www.w3.org/auto/Automotive
http://www.w3.org/tv/Entertainment (TV and Broadcasting)
http://www.w3.org/publishing/Publishing
http://www.w3.org/Payments/Web Payments
http://www.w3.org/2013/data/Web of Data
http://www.w3.org/Telco/Web and Telecommunications
http://www.w3.org/WoT/Web of Things
/Consortium/mission.htmlWeb for All
IMG-ALT Header link
http://www.w3.org/WAI/Accessibility
http://www.w3.org/International/Internationalization
http://www.w3.org/SecurityWeb Security
http://www.w3.org/Privacy/Privacy
/Consortium/activitiesW3C Work Groups
IMG-ALT Header link
/Consortium/cepc/Code of Ethics and Professional Conduct
/Consortium/activitiesW3C Groups
http://www.w3.org/Guide/Participant guidebook
A-TITLE Member-only group participant guidebook
/community/groups/Current W3C Community Groups
/community/groups/proposed/Proposed W3C Community Groups
http://www.w3.org/participate/Dev Resources
IMG-ALT Header link
http://www.w3.org/developers/IMG-ALT W3C Developers
A-TITLE W3C Developer Avenue
https://validator.w3.org/External Validators
/2009/cheatsheet/W3C cheatsheet
http://www.w3.org/Status.htmlMore Open Source Software
http://web-platform-tests.org/External Web Platform Tests
A-TITLE Open Web Platform testing
https://www.edx.org/school/w3cxExternal W3Cx (Training)
A-TITLE MOOCs from W3C on edX
http://www.w3.org/participate/More ways to participate
http://www.w3.org/Member/Member-only Home
IMG-ALT Header link
/Consortium/activitiesJoin a Group
/2004/01/pp-impl/queueJoin requests queue
/Help/Account/Request/MemberGet a Member Account
http://www.w3.org/Anchor Skip
A-TITLE Skip to content (e.g., when browsing via audio)
/blog/news/archives/8238Archive
A-TITLE Archive: Upcoming: W3C Workshop on Web & Machine Learning
/2020/01/machine-learning-work...IMG-ALT W3C Web & Machine Learning Workshop page banner image
/2020/01/machine-learning-work...Workshop on Web & Machine Learning
/community/webmachinelearning/Machine Learning for the Web Community Group
/2020/01/machine-learning-work...workshop details and submission instructions
/2002/09/wbs/1/machine-learnin...Registration
/blog/news/archives/8271Text duplicate Archive
A-TITLE Archive: Updated Candidate Recommendation: Identifiers for WebRTC’s Statistics API
/2011/04/webrtc/Web Real-Time Communications Working Group
/TR/2020/CR-webrtc-stats-20200...Identifiers for WebRTC’s Statistics API
/TR/2020/CR-webrtc-stats-20200...Anchor WEBRTC
/blog/news/archives/8231Text duplicate Archive
A-TITLE Archive: W3C Advisory Committee Elects Technical Architecture Group
https://www.w3.org/2001/tag/IMG-ALT W3C TAG logo
/2019/12/03-tag-nominationselected
/Consortium/Process/Anchor W3C Process Document
https://www.w3.org/2001/tag/TAG
/blog/news/archives/8136Text duplicate Archive
A-TITLE Archive: W3C Recommends CSS Writing Modes to support International writing modes
/2019/12/pressrelease-css-writ...IMG-ALT a screenshot of vertical scripts for Making the World Wide Web worldwide in English, Traditional Chinese, Japanese and Korean
https://www.w3.org/Style/CSS/CSS Working Group
/TR/2019/REC-css-writing-modes...CSS Writing Modes Level 3
/2019/12/pressrelease-css-writ...press release
/blog/news/archives/8123Text duplicate Archive
A-TITLE Archive: W3C Recommends WebAssembly to push the limits for speed, efficiency and responsiveness
/2019/12/pressrelease-wasm-rec...IMG-ALT WebAssembly black and white logo
http://www.w3.org/wasm/WebAssembly Working Group
/TR/2019/REC-wasm-core-1-20191...WebAssembly Core Specification
/TR/2019/REC-wasm-web-api-1-20...WebAssembly Web API
/TR/2019/REC-wasm-js-api-1-201...WebAssembly JavaScript Interface
/2019/12/pressrelease-wasm-rec...Text duplicate press release
/blog/news/archives/8094Text duplicate Archive
A-TITLE Archive: W3Cx Introduction to Web Accessibility – New Online Course
https://www.edx.org/course/web...External IMG-ALT illustration showing two persons looking at a computer; and WAI icons
https://www.edx.org/course/web...External Introduction to Web Accessibility
/2019/12/pressrelease-intro-we...Text duplicate press release
/blog/2019/12/free-online-cour...blog post
/2019/12/teaser-intro-web-acce...teaser video
https://www.edx.org/course/web...External Enroll
http://www.w3.org/blog/news/More news…
A-TITLE More News
http://www.w3.org/blog/news/feedIMG-ALT RSS
A-TITLE RSS feed for W3C home page news
/blog/news/feed/atomIMG-ALT Atom
A-TITLE Atom feed for W3C home page news
http://www.w3.org/Talks/Talks and Appearances
IMG-ALT Header link
A-TITLE More Talks…
http://www.w3.org/Talks/full list of W3C Talks and Appearances
/participate/eventscal.htmlEvents
IMG-ALT Header link
A-TITLE More Events…
https://wiki.csswg.org/plannin...External Subdomain Cascading Style Sheets (CSS) Working Group Meeting
/2019/did-wg/Meetings/F2F/2020...Decentralized Identifier Working Group Meeting
https://www.w3.org/immersive-web/Immersive Web Working Group
https://www.w3.org/webauthn/Web Authentication Working Group
/WAI/EO/wiki/EOWG_F2F_March_2020EOWG - Accessibility Education and Outreach Working Group
/2020/01/machine-learning-work...W3C Workshop on Web & Machine Learning
https://github.com/w3c/webpaym...External Web Payments Working Group
http://www.w3.org/Consortium/Text duplicate About W3C
IMG-ALT Header link
/Consortium/factsinternational community
http://www.w3.org/TR/standards
http://www.w3.org/support/Donations
IMG-ALT Header link
http://www.w3.org/support/Friend of W3C
/Consortium/missionW3C mission
http://www.w3.org/developers/developer tools
http://www.w3.org/blog/W3C Blog
IMG-ALT Header link
A-TITLE More Blog Entries…
/blog/2019/12/trace-context-en...W3C Trace Context specification enters proposed recommendation status and what it means
/People/LeHegaret/Philippe le Hegaret
/blog/2019/12/free-online-cour...Free Online Course “Introduction to Web Accessibility”
https://www.w3.org/People/shadi/Shadi Abou-Zahra
/blog/2019/11/status-update-on...Status update on Web Games technologies
/Consortium/Recruitment/W3C is hiring
IMG-ALT Header link
/Consortium/Recruitment/Director of Operations & CFO
/Consortium/Recruitment/Web Developer
/Consortium/Member/Testimonial/W3C Member Testimonial
IMG-ALT Header link
A-TITLE Read all Member testimonials
https://www.igalia.com/Nofollow External IMG-ALT Igalia logo
https://www.igalia.com/Nofollow External Igalia
/WAI/videos/standards-and-bene...Web Accessibility and W3C standards (Video)
IMG-ALT Header link
/WAI/videos/standards-and-bene...IMG-ALT Thumbnail of Web Accessibility and W3C Standards Video
http://www.w3.org/Home
http://www.w3.org/standards/Text duplicate Standards
http://www.w3.org/participate/Text duplicate Participate
/Consortium/membershipText duplicate Membership
http://www.w3.org/Consortium/Text duplicate About W3C
/Consortium/contactContact
http://www.w3.org/Help/Help and FAQ
/Consortium/sponsor/Sponsor / Donate
/Consortium/siteindexSite Map
http://lists.w3.org/Archives/P...External Feedback
http://twitter.com/W3CExternal IMG-ALT Twitter
A-TITLE Follow W3C on Twitter
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
/Consortium/Legal/ipr-noticeUsage policies apply

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
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 0.21 seconds.
This website only loads 3 CSS files. That's ok.
This website only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (33 kB).

HTTP Response Header

NameValue
dateWed, 22 Jan 2020 18:06:58 GMT
content-locationHome.html
varynegotiate,accept,Accept-Encoding,upgrade-insecure-requests
tcnchoice
last-modifiedWed, 22 Jan 2020 15:35:16 GMT
etag"8288-59cbc456b5500;89-3f26bd17a2f00-gzip"
accept-rangesbytes
cache-controlmax-age=600
expiresWed, 22 Jan 2020 18:16:58 GMT
content-encodinggzip
content-length8868
content-typetext/html; charset=utf-8
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 672,819 referring domains.
This website has 3,629,969,918 backlinks.
This website has backlinks from 318,754 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 http://www.w3.org/
#
# $Id: robots.txt,v 1.84 2019/03/22 22:48:24 gerald Exp $
#

# For use by search.w3.org
User-agent: W3C-gsa
Disallow: /Out-Of-Date

User-agent: W3T_SE
Disallow: /Out-Of-Date

User-agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT; MS Search 4.0 Robot)
Disallow: /

# W3C Link checker
User-agent: W3C-checklink
Disallow:

# Applebot continues to make hundreds of thousands of reqs/day for this area
# even though it has been returning permanent redirects for years
User-agent: Applebot
Disallow: /People/domain/

# the following settings apply to all bots
User-agent: *
# Blogs - WordPress
# https://codex.wordpress.org/Search_Engine_Optimization_for_WordPress#Robots.txt_Optimization
Disallow: /*/wp-admin/
Disallow: /*/wp-includes/
Disallow: /*/wp-content/plugins/
Disallow: /*/wp-content/cache/
Disallow: /*/wp-content/themes/
Disallow: /blog/*/trackback/
Disallow: /blog/*/feed/
Disallow: /blog/*/comments/
Disallow: /blog/*/category/*/*
Disallow: /blog/*/*/trackback/
Disallow: /blog/*/*/feed/
Disallow: /blog/*/*/comments/
Disallow: /blog/*/*?
Disallow: /community/trackback/
Disallow: /community/feed/
Disallow: /community/comments/
Disallow: /community/category/*/*
Disallow: /community/*/trackback/
Disallow: /community/*/feed/
Disallow: /community/*/comments/
Disallow: /community/*/category/*/*
Disallow: /community/*?
Disallow: /Consortium/Offices/trackback/
Disallow: /Consortium/Offices/feed/
Disallow: /Consortium/Offices/comments/
Disallow: /Consortium/Offices/category/*/*
Disallow: /Consortium/Offices/*/trackback/
Disallow: /Consortium/Offices/*/feed/
Disallow: /Consortium/Offices/*/comments/
Disallow: /Consortium/Offices/*?
# Wikis - Mediawiki
# https://www.mediawiki.org/wiki/Manual:Robots.txt
Disallow: /wiki/index.php?
Disallow: /wiki/index.php/Help
Disallow: /wiki/index.php/MediaWiki
Disallow: /wiki/index.php/Special:
Disallow: /wiki/index.php/Template
Disallow: /wiki/skins/
Disallow: /*/wiki/index.php?
Disallow: /*/wiki/index.php/Help
Disallow: /*/wiki/index.php/MediaWiki
Disallow: /*/wiki/index.php/Special:
Disallow: /*/wiki/index.php/Template
Disallow: /*/wiki/Special:
# various other access-controlled or expensive areas
Disallow: /2004/ontaria/basic
Disallow: /Team/
Disallow: /Project
Disallow: /Web
Disallow: /Systems
Disallow: /Out-Of-Date
Disallow: /2005/06/blog/
Disallow: /2004/08/W3CTalks
Disallow: /2007/11/Talks/search
Disallow: /People/all/
Disallow: /RDF/Validator/ARPServlet
Disallow: /RDF/Validator/rdfval
Disallow: /2003/03/Translations/byLanguage
Disallow: /2003/03/Translations/byTechnology
Disallow: /2005/11/Translations/Query
Disallow: /2000/06/webdata/xslt
Disallow: /2000/09/webdata/xslt
Disallow: /2005/08/online_xslt/xslt
Disallow: /Bugs/
Disallow: /Search/Mail/Public/
Disallow: /2006/02/chartergen
Disallow: /2004/01/pp-impl
Disallow: /Consortium/supporters
Disallow: /2007/08/pyRdfa/
Disallow: /2012/pyRdfa/extract
Disallow: /WAI/PF/comments/
Disallow: /participate/conferences.xml
Disallow: /scripts/
Disallow: /2005/01/yacker/
Disallow: /2005/01/yacker?
Disallow: /2003/09/nschecker?
Disallow: /2005/07/pubrules?
Disallow: /ns/hydra/console/?
Disallow: /2007/08/grddl/?
Disallow: /2009/07/webidl-check?
Disallow: /RDF/Validator/ARPServlet?
Disallow: /2000/06/webdata/xsv?
Disallow: /2000/09/webdata/xsv?
Disallow: /Style/CSS/members.be/
Disallow: /services
Disallow: /*,*

# WAI indexing
Disallow: /WAI/beta/
Disallow: /WAI/ut1/
Disallow: /WAI/ut2/
Disallow: /WAI/ut3/
Disallow: /WAI/ut4/
# Disallow: /WAI/EO/Drafts/
Disallow: /WAI/drafts/

Facebook popularity

Shares / Likes / Comments
19,425

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

Search preview

World Wide Web Consortium (W3C)
http://www.w3.org/
The World Wide Web Consortium (W3C) is an international community where Member organizations, a full-time staff, and the public work together to develop Web standards.

Most important keywords

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

KeywordResultRecheck
W3C68%Check
on Web66%Check
Web63%Check
World Wide Web57%Check
World Wide Web Consortium56%Check
Web Standards54%Check
W3C standards51%Check
on Web Machine Learning50%Check
is an50%Check
Workshop on Web Machine50%Check

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