Overview of the SEO Check
Meta information
80% 
Page quality
89% 
Page structure
85% 
Link structure
90% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.20 s
File size
32.30 kB
Words
1656
Media files
25
Number of links
107 internal / 17 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
World Wide Web Consortium (W3C)
The length of the page title is perfect. (324 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 is too long: 1071 pixels from max. 1000 pixels. Optimize description
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 1656 words. That's ok.
30% 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.
25 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 24.09 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 usage of strong and bold tags is perfect. We recommend the use of up to 33 tags for this page.
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.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

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 28 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 for All Header link
H3 Web and Industry Header link
H3 W3C Work Groups Header link
H3 Dev Resources Header link
H3 W3C Launches Initiative to Improve the Web for Merchants
H3 W3C community convenes online for TPAC 2020
H3 First Public Working Draft: WebXR Hand Input Module — Level 1
H3 First Public Working Draft: CSS Custom Highlight API Module Level 1
H3 First Public Working Draft: Propagation format for distributed trace context: Baggage
H3 Working Group Note: Progressive Font Enrichment: Evaluation Report
H3 Call for Review: Publication Manifest and Audiobooks are W3C Proposed Recommendations
H3 New version of the Roadmap of Web Applications on Mobile
H3 Internet Academy
H3 Navigation
H3 Contact W3C
H3 W3C Updates
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 17 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
/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/Security/Web Security
http://www.w3.org/Privacy/Privacy
http://www.w3.org/standards/Web 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
http://www.w3.org/groups/W3C Work Groups
IMG-ALT Header link
/Consortium/cepc/Code of Ethics and Professional Conduct
http://www.w3.org/Guide/Participant guidebook
/community/groups/W3C Community Groups
http://www.w3.org/Help/Account/Get a W3C Account
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
http://www.w3.org/api/API
IMG-ALT API
A-TITLE W3C API
https://validator.w3.org/External Validators
/2009/cheatsheet/W3C cheatsheet
http://www.w3.org/Status.htmlMore Open Source Software
https://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/Anchor Skip
A-TITLE Skip to content (e.g., when browsing via audio)
/blog/news/archives/8729Archive
A-TITLE Archive: W3C Launches Initiative to Improve the Web for Merchants
/2020/10/pressrelease-merchant...IMG-ALT megaphone
/community/merchantbg/Merchant Business Group
/2020/10/pressrelease-merchant...press release
/blog/news/archives/8702Text duplicate Archive
A-TITLE Archive: W3C community convenes online for TPAC 2020
/2020/10/TPAC/TPAC-2020-banner...IMG-ALT TPAC 2020 logo
/2020/10/TPAC/Overview.htmlTPAC 2020
/2020/10/TPAC/HallwayDiscussio...virtual TPAC lounge and open meeting rooms
/2020/10/TPAC/group-schedule.htmljoint meetings
/2020/10/TPAC/breakout-schedul...TPAC breakout week
/2020/10/TPAC/public-breakouts...open the public
/wiki/TPAC/2020/SessionIdeasBreakouts
/blog/news/archives/8734Text duplicate Archive
A-TITLE Archive: First Public Working Draft: WebXR Hand Input Module — Level 1
https://www.w3.org/immersive-web/Immersive Web Working Group
/TR/2020/WD-webxr-hand-input-1...WebXR Hand Input Module – Level 1
https://www.w3.org/TR/webxr/WebXR Device API
/blog/news/archives/8732Text duplicate Archive
A-TITLE Archive: First Public Working Draft: CSS Custom Highlight API Module Level 1
https://www.w3.org/Style/CSS/CSS Working Group
/TR/2020/WD-css-highlight-api-...CSS Custom Highlight API Module Level 1
https://www.w3.org/TR/CSS/CSS
/blog/news/archives/8724Text duplicate Archive
A-TITLE Archive: First Public Working Draft: Propagation format for distributed trace context: Baggage
/2018/distributed-tracing/Distributed Tracing Working Group
/TR/2020/WD-baggage-20201020/Propagation format for distributed trace context: Baggage.
/blog/news/archives/8720Text duplicate Archive
A-TITLE Archive: Working Group Note: Progressive Font Enrichment: Evaluation Report
https://www.w3.org/Fonts/WG/WebFonts Working Group
/TR/2020/NOTE-PFE-evaluation-2...Progressive Font Enrichment: Evaluation Report
https://github.com/w3c/PFE-ana...External Comments
/blog/news/archives/8694Text duplicate Archive
A-TITLE Archive: Call for Review: Publication Manifest and Audiobooks are W3C Proposed Recommendations
/publishing/groups/publ-wg/Publishing Working Group
/TR/2020/PR-pub-manifest-20201...Publication Manifest
http://schema.org/External schema.org
/TR/2020/PR-audiobooks-20201001/Audiobooks
/blog/news/archives/8686Text duplicate Archive
A-TITLE Archive: New version of the Roadmap of Web Applications on Mobile
/2020/09/web-roadmaps/mobile/IMG-ALT Icon representing mobile life-cycle
/2020/09/web-roadmaps/mobile/Roadmap of Web Applications on Mobile
/2020/09/web-roadmaps/mobile/a...Anchor Change history since November 2019
/2020/09/web-roadmaps/mobile/s...Security and Privacy
/2020/09/web-roadmaps/mobile/l...Application Lifecycle
/2020/09/web-roadmaps/mobile/p...Performance and Tuning
/2020/09/web-roadmaps/mobile/p...Payment and Services
/2020/09/web-roadmaps/mobile/n...Network and Communications
/2020/09/web-roadmaps/mobile/g...Graphics and Layout
/2020/09/web-roadmaps/mobile/a...Device Adaptation
/2020/09/web-roadmaps/mobile/g...Text duplicate Graphics and Layout
/2020/09/web-roadmaps/mobile/g...groups page
https://github.com/w3c/web-roa...External GitHub repository
https://github.com/w3c/web-roa...External issue tracker
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…
/blog/talks/event/live-subtitl...Live Subtitling and Accessibility Online Symposium Keynote
/blog/talks/venue/7th-internat...7th International Live Subtitling and Accessibility Symposium, online
A-TITLE 7th International Live Subtitling and Accessibility Symposium, online
/blog/talks/event/cognitive-ai...Cognitive AI – mimicking how we think
/participate/eventscal.htmlEvents
IMG-ALT Header link
A-TITLE More Events…
http://mile-high.video/External Subdomain Mile High Video 2020 Online
https://www.iottechexpo.com/gl...External IoT Tech Expo 2021
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/2020/10/group-calendarin...Group Calendaring Discovery Phase
/blog/2020/09/making-video-pag...Making video pages for the W3C AC meeting
http://www.w3.org/People/Bos/Bert Bos
/blog/2020/09/new-w3c-merchant...New W3C Merchant Business Group
/Consortium/Recruitment/W3C is hiring
IMG-ALT Header link
/Consortium/Recruitment/Privacy/Security Technology Executive Architect
/Consortium/Member/Testimonial/W3C Member Testimonial
IMG-ALT Header link
A-TITLE Read all Member testimonials
http://https/www.internetacade...Nofollow External IMG-ALT Internet Academy logo
http://https/www.internetacade...Nofollow External Internet Academy
/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
https://lists.w3.org/Archives/...External Feedback
https://twitter.com/W3CExternal IMG-ALT Twitter
A-TITLE Follow W3C on Twitter
https://www.csail.mit.edu/External MIT
https://www.ercim.eu/External ERCIM
https://www.keio.ac.jp/External Keio
https://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 0.20 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 (32 kB).

HTTP Response Header

NameValue
dateMon, 26 Oct 2020 21:24:34 GMT
content-locationHome.html
varynegotiate,accept,Accept-Encoding,upgrade-insecure-requests
tcnchoice
last-modifiedSun, 25 Oct 2020 05:20:15 GMT
etag"813e-5b277f7fda1c0;89-3f26bd17a2f00-gzip"
accept-rangesbytes
cache-controlmax-age=600
expiresMon, 26 Oct 2020 21:34:34 GMT
content-encodinggzip
content-length9263
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 606,637 referring domains.
This website has 3,326,857,509 backlinks.
This website has backlinks from 293,964 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
19,577

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

Search preview

www.w3.org
World Wide Web Consortium (W3C)
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

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

KeywordResultRecheck
W3C75%Check
Web70%Check
Wide Web65%Check
World Wide Web63%Check
World Wide Web Consortium62%Check
Web Standards62%Check
W3C standards60%Check
W3C Community58%Check
Consortium56%Check
Web Accessibility56%Check

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