Holger-arndt.com - SEO Checker

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Overview of the SEO Check
Meta information
83% 
Page quality
81% 
Page structure
54% 
Link structure
68% 
Server
91% 
External factors
42% 
SEO Score
Response time
0.07 s
File size
71.00 kB
Words
3505
Media files
17
Number of links
40 internal / 64 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Holger Arndt | Big Data Analytics, Machine Learning, Neural Networks
The page title should be shorter than 580 pixels. It is 623 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Holger Arndt: Your Expert for Big Data Analytics, Machine Learning, Artificial Intelligence, Neural Networks and Text Mining.
The length of the meta description is perfect. (757 pixels out of 1000 max pixel length)
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-us
Server location: United States of America
The following language is defined by HTML: en-us
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 HTML 5 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, initial-scale=1.0
titleHolger Arndt | Big Data Analytics, Machine Learning, Neural Networks
authorHolger Arndt
descriptionHolger Arndt: Your Expert for Big Data Analytics, Machine Learning, Artificial Intelligence, Neural Networks and Text Mining.
robotsindex, follow
geo.regionDE-BY
geo.placenameMunich
geo.position48.137222,11.575556
ICBM48.137222,11.575556
google-site-verificationr8fXvdIXBs5mQUNXiaDVERqsPD6VuIERPEp1mK78OAw
msvalidate.01AA75D6141E68625D6FADF6EAEBCAEAEF
yandex-verification470ec637d4162f68
theme-color#222
langen-us
X-UA-CompatibleIE=edge
content-typetext/html; charset=UTF-8
charsetutf-8

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Page quality

Content
(Critically important)
These Typos were found:
  • algoritms => algorithms
  • capetown => Cape Town
  • acedemic => academic
This page contains 3505 words. That's ok.
33.2% 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.
69 paragraphs were found on this page.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 19.75 words is good.
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.
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: autoaid gmbh, berlin
Some tags are too long. With 272 characters this one is longer than 70 characters:
"likewise, under art. 21 gdpr, users and data subjects have the right to object to the controller's fut..."
Image SEO
(Somewhat important)
3 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)
The HTML has geoname information: DE-BY
The HTML has georegion information: Munich
The HTML has geoposition information: 48.137222,11.575556
HTTPS
(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
/images/holger-arndt-square.jpgHolger Arndt
https://holger-arndt.com/images/german.pngDeutsch
/images/siemens-logo.pngSiemens Logo
/images/autoaid-logo.pngautoaid Logo
/images/refinedads-logo.pngRefinedAds Logo
/images/autoaid-logo.pngautoaid Logo
/images/autoaid-logo.pngautoaid Logo
/images/refinedads-logo.pngRefined Labs Logo
/images/siemens-logo.pngSiemens Logo
/images/siemens-logo.pngSiemens Logo
/images/hospimed-logo.pngHospimed Logo
/images/siemens-logo.pngSiemens Logo
/images/siemens-logo.pngSiemens Logo
/images/autoaid-logo.pngNo alt attribute provided
/images/refinedads-logo.pngNo alt attribute provided
/images/siemens-logo.pngNo alt attribute provided
...cleveruptime.com/badges/holger-arndt.comServer Monitoring

Page structure

H1 heading
(Critically important)
Holger Arndt
The H1 heading is too short (12 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.
There are 77 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 Holger Arndt
H2 My Customers
H2 My Passion
H2 My Strengths
H2 My Experience
H2 My Network
H2 My Research
H2 My Services
H2 Expertise
H2 Projects
H2 Publications
H2 Software
H2 How-To
H2 Links
H2 Contact
H2 Privacy Policy
H3 Project Management
H3 Data Analysis
H3 Consulting
H3 Software Development
H3 Universal Java Matrix Package
H3 Java Data Mining Package
H3 Big Data and Machine Learning Links
H3 Development
H3 Misc Links
H3 I. Information about us as controllers of your data
H3 II. The rights of users and data subjects
H3 III. Information about the data processing
H4 Machine Learning
H4 Cluster Analysis
H4 Graphical Models
H4 Text Mining
H4 Optimization Methods
H4 Programming Languages
H4 Operating Systems
H4 Databases
H4 Web Technologies
H4 Communication Protocols
H4 Project Management Duplicate text
H4 Development Tools
H4 Languages
H4 Apt Pinning
H4 Configure Apache Web Server
H4 Configure Default Editor for Debian
H4 Configure sudo
H4 Create SSL Certificate
H4 Encode Video with mencoder
H4 Encrypt Disk Using cryptsetup
H4 Git Tricks
H4 Important Browser Plugins and Extensions
H4 Install Elasticsearch
H4 Install GlusterFS
H4 Install KVM
H4 Install Samba File Server
H4 Install Squid Proxy Server
H4 Install SVN
H4 Maven Tricks
H4 MySQL Tricks
H4 PDF Tricks
H4 Raid How-To Using mdadm
H4 Setup Ansible
H4 Setup iptables Firewall
H4 — Moritz Funk, CEO
H4 — Rupert Rockinger, CTO
H4 — Prof. Dr. Martin Stetter
H4 Holger Arndt Duplicate text
H4 Copyright
H4 Server data
H4 Cookies
H4 Contact Duplicate text
H4 Social media links via graphics
H4 twitter
H4 LinkedIn
H4 Google AdSense
H5 a) Session cookies
H5 b) Third-party cookies
H5 c) Disabling cookies
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 (64) on this page.

Found links on this page

LinkAttributesAnchor text
https://holger-arndt.com/Anchor IMG-ALT Holger Arndt
https://holger-arndt.com/Anchor Text duplicate Holger Arndt
https://holger-arndt.com/Anchor About
https://holger-arndt.com/Anchor My Services
https://holger-arndt.com/Anchor Expertise
https://holger-arndt.com/Anchor Projects
https://holger-arndt.com/Anchor Publications
https://holger-arndt.com/Anchor Software
https://holger-arndt.com/Anchor How-To
https://holger-arndt.com/Anchor Links
https://holger-arndt.com/Anchor Testimonials
https://holger-arndt.com/Anchor Contact
https://holger-arndt.de/External IMG-ALT Deutsch
https://holger-arndt.com/Anchor Project Request
https://holger-arndt.com/Anchor Info for Recruiter
https://holger-arndt.com/Anchor No Text
https://holger-arndt.com/Anchor No Text
http://www.innocentive.com/External Subdomain InnoCentive award
http://www.autoaid.de/External Subdomain IMG-ALT autoaid Logo
http://www.autoaid.de/External Subdomain www.autoaid.de
http://www.autoaid.de/External Subdomain Text duplicate IMG-ALT autoaid Logo
http://www.autoaid.de/External Subdomain Text duplicate www.autoaid.de
http://www.refinedlabs.com/External Subdomain IMG-ALT Refined Labs Logo
http://www.refinedlabs.com/External Subdomain www.refinedlabs.com
http://www.siemens.de/External Subdomain IMG-ALT Siemens Logo
http://www.siemens.de/External Subdomain www.siemens.de
http://www.siemens.de/External Subdomain Text duplicate IMG-ALT Siemens Logo
http://www.siemens.de/External Subdomain Text duplicate www.siemens.de
http://www.hospimed.de/External Subdomain IMG-ALT Hospimed Logo
http://www.hospimed.de/External Subdomain www.hospimed.de
http://www.siemens.de/External Subdomain Text duplicate IMG-ALT Siemens Logo
http://www.siemens.de/External Subdomain Text duplicate www.siemens.de
http://www.enetx.de/External Subdomain www.enetx.de
http://www.siemens.de/External Subdomain Text duplicate IMG-ALT Siemens Logo
http://www.siemens.de/External Subdomain Text duplicate www.siemens.de
http://www.enase.org/ENASE2010/External Subdomain 5th International Conference on Evaluation of Novel Approaches to Software Engineering (ENASE)
/publications/ENASE2010.pdfDownload
http://mloss.org/workshop/icml10/External Workshop on Machine Learning Open Source Software, 27th International Conference on Machine Learning (ICML)
/publications/MLOSS2010.pdfText duplicate Download
http://www.sbs.co.za/ICSE2010/External Subdomain Flexitools Workshop, International Conference for Software Engineering (ICSE)
/publications/Flexitools2010.pdfText duplicate Download
http://conferences.computer.or...External Subdomain 33rd Annual IEEE International Computer Software and Applications Conference (COMPSAC)
/publications/COMPSAC2009-ujmp...Text duplicate Download
http://conferences.computer.or...External Subdomain Text duplicate 33rd Annual IEEE International Computer Software and Applications Conference (COMPSAC)
/publications/COMPSAC2009-jdmp...Text duplicate Download
http://www.ece.upatras.gr/ecai...External Subdomain 18th European Conference on Artificial Intelligence (ECAI)
http://eis.comp.lancs.ac.uk/wo...External Subdomain 6th International Workshop on Smart Appliances and Wearable Computing (IWSAWC)
/publications/IWSAWC2006-kranz...Text duplicate Download
http://www.lkn.ei.tum.de/External Subdomain Lehrstuhl für Kommunikationsnetze
/publications/TUM2003-arndt.pdfText duplicate Download
https://ujmp.org/External Tell me more
https://jdmp.org/External Text duplicate Tell me more
https://cleveruptime.com/docs/...External Apt Pinning
https://cleveruptime.com/docs/...External Configure Apache Web Server
https://cleveruptime.com/docs/...External Configure Default Editor for Debian
https://cleveruptime.com/docs/...External Configure sudo
https://cleveruptime.com/docs/...External Create SSL Certificate
/how-to/encode-video-with-menc...Encode Video with mencoder
https://cleveruptime.com/docs/...External Encrypt Disk Using cryptsetup
https://cleveruptime.com/docs/...External Git Tricks
/how-to/important-browser-plug...Important Browser Plugins and Extensions
/how-to/install-elasticsearch/Install Elasticsearch
/how-to/install-glusterfs/Install GlusterFS
/how-to/install-kvm/Install KVM
/how-to/install-samba-file-ser...Install Samba File Server
/how-to/install-squid-proxy-se...Install Squid Proxy Server
/how-to/install-svn/Install SVN
/how-to/maven-tricks/Maven Tricks
/how-to/mysql-tricks/MySQL Tricks
/how-to/pdf-tricks/PDF Tricks
https://cleveruptime.com/docs/...External Raid How-To Using mdadm
/how-to/setup-ansible/Setup Ansible
/how-to/setup-iptables-firewall/Setup iptables Firewall
https://domainmetadata.com/External DomainMetaData
https://cleveruptime.com/External CleverUptime
https://books.google.com/ngram...External Subdomain Google books Ngram Viewer
http://www.ling.uni-potsdam.de...External Subdomain NLP-Tools
http://linkeddata.org/External Linked Data
https://tcpdf.org/External TCPDF
https://github.com/artdomg/bar...External Barcode JQuery
http://anydesk.de/External AnyDesk
http://xkcd.com/External xkcd
http://www.urbandictionary.com/External Subdomain Urban Dictionary
http://musicbrainz.org/External MusicBrainz
http://www.harzing.com/pop.htmExternal Subdomain Publish or Perish
http://paletton.com/External Paletton
http://www.escapethecity.org/External Subdomain Escape The City
https://holger-arndt.com/Anchor Imprint
https://holger-arndt.com/Anchor No Text
https://holger-arndt.com/Anchor Privacy Policy
https://twitter.com/privacyNew window External URL anchor text
https://twitter.com/privacy
https://www.privacyshield.gov/...New window External Subdomain URL anchor text
https://www.privacyshield.gov/...0000TORzAAO&status=Active
https://www.linkedin.com/legal...New window External Subdomain URL anchor text
https://www.linkedin.com/legal/privacy-policy
https://www.privacyshield.gov/...New window External Subdomain URL anchor text
https://www.privacyshield.gov/participant?id=a2zt0000000L0UZAA0&status=Active
https://www.privacyshield.gov/...New window External Subdomain URL anchor text
https://www.privacyshield.gov/participant?id=a2zt000000001L5AAI&status=Active
https://policies.google.com/pr...New window External Subdomain URL anchor text
https://policies.google.com/privacy
https://adssettings.google.com...New window External Subdomain URL anchor text
https://adssettings.google.com/authenticated
https://www.ratgeberrecht.eu/l...New window External Subdomain Model Data Protection Statement
https://www.ratgeberrecht.eu/New window External Subdomain Anwaltskanzlei Weiß & Partner
https://www.linkedin.com/in/ho...External Subdomain A-TITLE Connect on LinkedIn
https://www.xing.com/profile/H...External Subdomain A-TITLE Connect on Xing
https://twitter.com/holgerarndtExternal A-TITLE Follow on Twitter
https://holger-arndt.com/Text duplicate Holger Arndt
A-TITLE Holger Arndt Homepage
https://cleveruptime.com/External IMG-ALT Server Monitoring

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://holger-arndt.com/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.07 seconds.
The file size of the HTML document is fine (71 kB).

HTTP Response Header

NameValue
strict-transport-securitymax-age=63072000; includeSubDomains
cache-controlmax-age=300
expiresSun, 11 May 2025 04:54:44 GMT
varyAccept-Encoding
content-encodinggzip
content-length14983
content-typetext/html; charset=UTF-8
dateSun, 11 May 2025 04:49:44 GMT
serverApache/2.4.51 (Debian)
statuscode200
http_versionHTTP/2

External factors

This page has only a few links from other websites.
This page only has backlinks from 14 referring domains.
This page only has 24 backlinks.
This page only has few backlinks from 5 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-Agent: *
Allow: /
Sitemap: https://holger-arndt.com/sitemap.xml

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Search preview

holger-arndt.com
Holger Arndt | Big Data Analytics, Machine Learning, Neural Networks
Holger Arndt: Your Expert for Big Data Analytics, Machine Learning, Artificial Intelligence, Neural Networks and Text Mining.

Most important keywords

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

KeywordResultRecheck
Holger97%Check
Arndt97%Check
Holger Arndt97%Check
Poster Holger Arndt79%Check
Data70%Check
Machine Learning70%Check
Learning69%Check
Machine69%Check
Big Data68%Check
Data Analytics66%Check
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