Jens-c.de - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
63% 
Page structure
94% 
Link structure
96% 
Server
45% 
External factors
23% 
SEO Score
Response time
0.02 s
File size
5.80 kB
Words
343
Media files
1
Number of links
14 internal / 26 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Jens Claßen
The page title is too short. (116 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
The meta description is missing.
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 character encoding is not specified in the HTTP header.
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1.0
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 343 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 27.82 words is high.
35.3% 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.
8 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
This page does not require any JavaScript files.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 86 characters this one is longer than 70 characters:
"projection of belief in the presence of nondeterministic actions and fallible sensing."
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.
HTTPS
(Somewhat important)
The HTTPS protocol for secure data transmission is not used.

Media list

URLAlt attributeTitle
http://jens-c.de/img/jens.jpgJens Claßen

Page structure

H1 heading
(Critically important)
Jens Claßen
The H1 heading is too short (11 characters). It should be at least 20 Characters long.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Jens Claßen
H2 About
H3 Latest News
H3 Recent Publications
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 too many external links (26) on this page.

Found links on this page

LinkAttributesAnchor text
http://jens-c.de/index.htmlAbout
http://jens-c.de/activities.htmlActivities
http://jens-c.de/contact.htmlContact
http://jens-c.de/cv.htmlCV
http://jens-c.de/news.htmlNews
/publications.htmlPublications
http://jens-c.de/teaching.htmlTeaching
http://jens-c.de/theses.htmlTheses
http://scholar.google.com/cita...External Subdomain No Text
https://github.com/jens-classenExternal No Text
https://www.linkedin.com/in/je...External Subdomain No Text
https://twitter.com/jens_classenExternal No Text
http://plis.ruc.dk/External Subdomain Programming, Logic and Intelligent Systems
https://ruc.dk/en/department-p...External Department of People and Technology
https://ruc.dk/enExternal Roskilde University
http://www.cs.sfu.ca/External Subdomain School of Computing Science
http://www.sfu.ca/External Subdomain Simon Fraser University
http://kbsg.rwth-aachen.de/External Subdomain Knowledge-Based Systems Group
http://www.rwth-aachen.de/External Subdomain RWTH Aachen University
https://en.wikipedia.org/wiki/ßExternal Subdomain ß
https://en.wikipedia.org/wiki/...External Subdomain β
https://www.dagstuhl.de/en/sem...External Subdomain Dagstuhl Seminar on Trustworthy AI
https://twitter.com/jens_class...External 2022-09-23
https://www.dagstuhl.de/22391External Subdomain [Link]
https://twitter.com/jens_class...External 2022-07-31
https://twitter.com/hashtag/KR...External #KR2022
https://twitter.com/FLoC2022External @FLoC2022
https://jens-classen.net/publi...External Anchor Text duplicate [Link]
http://jens-c.de/news.html[all news]
https://jens-classen.net/pub/L...External PDF
/jclassen_bib.htmlBibTeX
https://jens-classen.net/pub/C...External Text duplicate PDF
/jclassen_bib.htmlText duplicate BibTeX
https://doi.org/10.24963/kr.20...External DOI
https://jens-classen.net/pub/C...External Text duplicate PDF
/jclassen_bib.htmlText duplicate BibTeX
/publications.html[all publications]
https://www.swi-prolog.org/External Subdomain SWI-Prolog
https://github.com/alexandrevi...External Flex
http://jens-c.de/privacy.htmlPrivacy

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time is excellent with 0.02 seconds.
This page only loads 3 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (6 kB).

HTTP Response Header

NameValue
dateWed, 12 Jun 2024 09:05:00 GMT
serverApache/2.4.59 (Unix)
varyUser-Agent
last-modifiedTue, 21 May 2024 12:39:26 GMT
etag"174c-618f61bb2fb80"
accept-rangesbytes
content-length5964
content-typetext/html
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
We didn't find any backlinks to this page.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

jens-c.de
Jens Claßen

Most important keywords

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

KeywordResultRecheck
Jens77%Check
Jens Claßen70%Check
Claßen63%Check
actions39%Check
projection39%Check
belief39%Check
presence39%Check
nondeterministic39%Check
fallible39%Check
sensing39%Check
Show more keywords and terms

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