Nibbler SEO audit for validator.w3.org

Overall7.0

The overall score for this website.

Accessibility8.1

How accessible the website is to mobile and disabled users.

The following tests contribute to this score:

Experience6.0

How satisfying the website is likely to be for users.

Marketing4.7

How well marketed, and popular the website is.

Technology7.7

How well designed and built the website is.

Nibbler tested a sample of 5 pages from this website at 21:30 on 9 Apr 2024 (BST).

Top priorities for website improvement

  • Check how the website looks using a mobile and a tablet. Consider adding mobile-only styling using media queries. Some websites employ other techniques for mobile visitors which we cannot currently detect. (read more)
  • Consider a leading website analytics solution, such as WebTrends or Google Analytics. (read more)
  • Sign up for a Twitter account and make sure it is linked to from your site. (read more)

Twitter0.0

This website does not appear to be associated with a Twitter account.

  • This website did not contain a link to Twitter.
    • Sign up for a Twitter account and make sure it is linked to from your site.

Analytics0.0

0% of pages use analytics

No Analytics SolutionNo

  • None of this website is using any recognised analytics software. It is still possible to gather a great deal of information from webserver logs, however complete visitor analysis requires client-side Javascript or an image not found here.
    • Consider a leading website analytics solution, such as WebTrends or Google Analytics.
  • Note that this test can only detect recognised analytics solutions. If an analytics solution is new, obscure or used in a non-standard way (e.g. it has been customised) it may not be detected.

Printability0.0

0% of pages are optimised for printing

Mobile3.0

Mobile screenshot of validator.w3.orgTablet screenshot of validator.w3.org
  • None of this website appears to be fully optimised for viewing on a mobile or tablet (using CSS media queries). It is important to make sure your content can be viewed easily across a wide range of devices as a growing percentage of web browsing is now done on phones and tablets.

Media specific CSS detected

MediaMin widthMax widthCSS file
screen--validator.w3.org/feed/
screen--validator.w3.org/.../linkchecker.css

Images6.8

100% of images have a clearly defined size

13 images are being resized by the browser

Meta tags6.8

This is how this website will look in Google search listings:

The W3C Markup Validation Service

validator.w3.org/

W3C's easy-to-use markup validation service, based on SGML and XML parsers.

  • All pages include at least some metadata, but only 60.0% of pages have a description meta tag. The description meta data is important as it appears on Google's search result pages.
    • Make sure that all the pages of this website include a meta description. If you don't include one, Google will choose a sample of text from the page to appear in the search engine result. By including a meta description, you can control how your search engine result will appear.

      Pages with no meta description

Meta Tags (name attribute)

Page URLNameContent
validator.w3.org/keywordsHTML, HyperText Markup Language, Validation, W3C Markup Validation Service
validator.w3.org/descriptionW3C's easy-to-use markup validation service, based on SGML and XML parsers.
validator.w3.org/docs/help.htmlkeywordsHTML, HyperText Markup Language, Validation, W3C Markup Validation Service
validator.w3.org/docs/help.htmldescriptionW3C's easy-to-use markup validation service, based on SGML and XML parsers.
validator.w3.org/checklinkgeneratorW3C-checklink/5.0.0
validator.w3.org/about.htmlkeywordsHTML, HyperText Markup Language, Validation, W3C Markup Validation Service
validator.w3.org/about.htmldescriptionW3C's easy-to-use markup validation service, based on SGML and XML parsers.

Meta Tags (http-equiv attribute)

Page URLNameContent
validator.w3.org/Content-Typetext/html;charset=utf-8
validator.w3.org/docs/help.htmlContent-Typetext/html;charset=utf-8
validator.w3.org/checklinkContent-Script-Typetext/javascript
validator.w3.org/about.htmlContent-Typetext/html;charset=utf-8

URL format7.6

  • 2 URLs include a file extension.
    • Avoid use of file extensions wherever possible. File extensions appear at the end of web addresses, and have several negative effects. They make the address harder to remember or type (particularly for non-technical users), and can reveal the underlying technology of the website making it very slightly more vulnerable to hackers. They also tie the implementation of the website to a specific technology, which can make subsequent migration of URLs difficult. Consider URL rewriting as an effective and transparent means of creating appropriate URLs.

Amount of content8.1

Rendering Chart...

  • This website has an average of 696 words per page. The amount of content on a website has been shown to correlate with its search engine ranking.

Server behaviour10.0

Yes404 page

YesCompression

  • This website handles missing pages correctly by sending a 404 HTTP status code.
  • This website was served with GZIP encoding. This is very good because it reduces the loading time of a web page.
  • 2 of the pages of this website follow the best practice of using a permanent (HTTP 301) redirect between URLs with/without trailing slashes. These pages are ideal.
  • This test is not applicable as this website appears to be on a subdomain.

Page titles10.0

100% of pages have defined titles

0% of page titles are weak

  • All pages were found to use page titles appropriately. Page titles appear in search results and at the top of the browser's window when visiting the site. Appropriate page titles are particularly important for search engine optimisation.

Headings10.0

approved asked character check checker clean clicked conformance contents control credits declaration doctype documentation does don't encoding ended error feed feedback found frequently help html icon kind link maintain many markup mean messages miscellaneous online other owns page pages quality questions referer reports resources same says scheme send service should site some specifications strange support table there these thing undefined using valid validate validation validator validators validity very want work

  • All pages were found to use defined headings. This is excellent as it allows visitors and search engines to summarise the content of webpages quickly. Correctly defined headings aid accessibility and are particularly important for search engine optimisation.

Page headings detail

URLHeadingLevel
validator.w3.org/Markup Validation ServiceH1
validator.w3.org/docs/help.htmlMarkup Validation ServiceH1
validator.w3.org/docs/help.htmlHelp and FAQ for the Markup ValidatorH2
validator.w3.org/docs/help.htmlTable of contentsH3
validator.w3.org/docs/help.htmlAbout the Markup ValidatorH3
validator.w3.org/docs/help.htmlUsing this serviceH3
validator.w3.org/docs/help.htmlMiscellaneous (Very) Frequently Asked QuestionsH3
validator.w3.org/docs/help.htmlHelp me! I clicked on an icon and ended up on this strange site!H4
validator.w3.org/docs/help.htmlWhat is Markup Validation?H4
validator.w3.org/docs/help.htmlIs validation some kind of quality control? Does "valid" mean "quality approved by W3C"?H4
validator.w3.org/docs/help.htmlIs validity the same thing as conformance?H4
validator.w3.org/docs/help.htmlWhat is the Markup Validator and what does it do?H4
validator.w3.org/docs/help.htmlWhy should I validate my HTML pages?H4
validator.w3.org/docs/help.htmlWho owns/maintain the Markup Validator?H4
validator.w3.org/docs/help.htmlWhat other validators are there?H4
validator.w3.org/docs/help.htmlHow do I send feedback/bug reports about the Markup Validator?H4
validator.w3.org/docs/help.htmlHow do I use this service?H4
validator.w3.org/docs/help.htmlWhat are these error messages?H4
validator.w3.org/docs/help.htmlMany error messages? Don't panic.H4
validator.w3.org/docs/help.htmlI don't want error messages, I want you to clean up my page!H4
validator.w3.org/docs/help.htmlNo DOCTYPE Declaration Found!H4
validator.w3.org/docs/help.htmlNo Character Encoding Found!H4
validator.w3.org/docs/help.html/check?uri=referer does not work - or - the validator says it does not support my "undefined" URL schemeH4
validator.w3.org/feed/Feed Validation ServiceH1
validator.w3.org/checklinkLink CheckerH1
validator.w3.org/about.htmlMarkup Validation ServiceH1
validator.w3.org/about.htmlAbout The W3C Markup Validation ServiceH2
validator.w3.org/about.htmlTable of contentsH3
validator.w3.org/about.htmlAbout this serviceH3
validator.w3.org/about.htmlOther resourcesH3
validator.w3.org/about.htmlCreditsH3
validator.w3.org/about.htmlDocumentation & SpecificationsH4
validator.w3.org/about.htmlOnline Tools & Other ValidatorsH4

Freshness10.0

Last updated March 25, 2024

  • It looks like this website was last updated on Monday, 25 March 2024. This is good because visitors perceive up-to-date websites as more credible. Websites that are updated regularly are also spidered by search engines more often.
  • To find this information we used the last modified dates reported by this website's server in addition to looking for dates written on each page.

All dates found

DateFileSource
25/03/2024validator.w3.org/feed/Last modified header
29/11/2023validator.w3.org/checklink/.../w3c.pngLast modified header
22/02/2024validator.w3.org/images/opensource-55x48.pngLast modified header
28/02/2024validator.w3.org/images/w3c.pngLast modified header
22/02/2024validator.w3.org/style/baseLast modified header
29/11/2023validator.w3.org/.../linkchecker.cssLast modified header
25/03/2024validator.w3.org/feed/.../common.cssLast modified header
25/03/2024validator.w3.org/feed/.../validator.cssLast modified header
25/03/2024validator.w3.org/.../documentation.cssLast modified header
25/03/2024validator.w3.org/feed/.../base.cssLast modified header

Popularityi

  • Sorry, it was not possible to determine the popularity for this website.

Source: Ahrefs

Domain agei

  • Sorry, we cannot check the domain age of .org websites.

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