- SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.86 s
File size
11.40 kB
Media files
Number of links
46 internal / 2 external

Task list of SEO Improvements

Meta specifications

(Critically important)
Stanford Encyclopedia of Philosophy
The length of the page title is perfect. (329 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
(Critically important)
There are no problems in accessing the website.
Canonical URL
No canonical link is specified.
(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.
(Somewhat important)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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 character encoding is not specified in the HTTP header.
The charset encoding (UTF-8) is set correctly.
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
(Nice to have)
No favicon is linked in the HTML code.

Meta tags

viewportwidth=device-width, initial-scale=1.0
Content-Typetext/html; charset=UTF-8

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Page quality

(Critically important)
There are only 328 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 32.8 words is high.
36.3% 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.
6 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 4 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 7 tags for this page.
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.
(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
/symbols/sep-man-red.pngSEP home page

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 Search
H2 Browse
H4 Current Operations Are Supported By:
H4 Browse Duplicate text
H4 About
H4 Support SEP
H4 Mirror Sites
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 2 external links on this page.
LinkAttributesAnchor text
/index.htmlIMG-ALT SEP home page
/index.htmlStanford Encyclopedia of Philosophy
/contents.htmlTable of Contents
/new.htmlWhat's New
/cgi-bin/encyclopedia/randomSubdomain Random Entry
/info.htmlEditorial Information
/about.htmlAbout the SEP
/board.htmlEditorial Board
/cite.htmlHow to Cite the SEP
/special-characters.htmlSpecial Characters Tools
/support/Support the SEP
/support/friends.htmlPDFs for SEP Friends
/support/donate.htmlMake a Donation
/support/sepia.htmlSEPIA for Libraries
/search/searcher.pySearch Tips
/contents.htmlText duplicate Table of Contents
/new.htmlText duplicate What's New
/archives/Text duplicate Archives
/cgi-bin/encyclopedia/randomSubdomain Text duplicate Random Entry
/board.htmlText duplicate Editorial Board
/support/commitments.htmlSubdomain academic libraries that have joined SEPIA Subdomain Friends of the SEP Society
/contents.htmlText duplicate Table of Contents
/new.htmlText duplicate What's New
/cgi-bin/encyclopedia/randomSubdomain Text duplicate Random Entry
/published.htmlText duplicate Chronological
/archives/Text duplicate Archives
/info.htmlText duplicate Editorial Information
/about.htmlText duplicate About the SEP
/board.htmlText duplicate Editorial Board
/cite.htmlText duplicate How to Cite the SEP
/special-characters.htmlText duplicate Special Characters duplicate Advanced Tools
/contact.htmlText duplicate Contact
/support/Text duplicate Support the SEP
/support/friends.htmlText duplicate PDFs for SEP Friends
/support/donate.htmlText duplicate Make a Donation
/support/sepia.htmlText duplicate SEPIA for Libraries USA (Main Site) Philosophy, Stanford University
/mirrors.htmlInfo about mirror sites
/info.htmlcopyright © 2024 Subdomain The Metaphysics Research Lab

Server configuration

HTTP redirects
(Critically important)
This page redirects to ""
HTTP header
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
(Somewhat important)
The page response time of 0.86 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
This page loads 7 CSS files. This may affect the page load time negatively.
This page loads 4 JavaScript files. This may affect the load time negatively.
The file size of the HTML document is fine (11 kB).

HTTP Response Header

dateTue, 28 May 2024 13:42:04 GMT
strict-transport-securitymax-age=31536000; includeSubDomains; preload

External factors

(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 39,957 referring domains.
This page has 2,925,834 backlinks.
This page has backlinks from 25,566 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 4403 shares and comments on Facebook.


crawl-delay: 5

User-agent: *
Disallow: /MathJax/
Disallow: /mathjax/
Disallow: /archives/
Disallow: /Archives/
Disallow: /cgi-bin/
Disallow: /ck-editor/
Disallow: /css/
Disallow: /CSS/
Disallow: /diffs/
Disallow: /DIFFS/
Disallow: /font/
Disallow: /FONT/
Disallow: /inc/
Disallow: /INC/
Disallow: /js/
Disallow: /JS/
Disallow: /referer/
Disallow: /rss/
Disallow: /subject-editors/
Disallow: /tmp/
Disallow: /symbols/
Disallow: /Symbols/
Disallow: /usage/
Disallow: /Usage/
Disallow: /wwwstat/
Disallow: /Wwwstat/
Disallow: /search/
Disallow: /perl/

User-Agent: ia_archiver
Disallow: /

User-Agent: W3C-checklink

user-agent: Pinterestbot
allow: /entries/

Search preview

Most important keywords

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

Stanford Encyclopedia52%Check
Stanford University46%Check

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