Robertfilter.net - SEO Checker

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Overview of the SEO Check
Meta information
97% 
Page quality
86% 
Page structure
75% 
Link structure
67% 
Server
100% 
External factors
48% 
SEO Score
Response time
0.10 s
File size
27.60 kB
Words
693
Media files
14
Number of links
82 internal / 13 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Robert Filter - roberfilter.net
The length of the page title is perfect. (249 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Personal website of Robert Filter, physicist and space enthusiast
The length of the meta description is perfect. (397 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://robertfilter.net/
There is a valid canonical link 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
authorRobert Filter
descriptionPersonal website of Robert Filter, physicist and space enthusiast
langen
og:site_nameroberfilter.net
og:typearticle
og:titleRobert Filter
og:urlhttps://robertfilter.net/
og:descriptionPersonal website of Robert Filter, physicist and space enthusiast
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 693 words. That's ok.
27.1% 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.
9 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 13.83 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
No Apple touch icon is specified.
A viewport "width=device-width, initial-scale=1.0" is provided.
This page 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 14 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.
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
/images2/Rob_nachdenk.jpgRobert Filter thinking
/images2/Bessel_SPP.jpgExcitation of a Bessel-type surface plasmon polariton on a circular optical nanoantenna
/images2/Jena_Panorama.jpgPanorama of Jena
/images2/Ostsee_Jump.jpgTwo guys jumping in front of the baltic sea at sunset
/images2/JENOPTIK-logo.jpgsmall logo JENOPTIK AG
/images2/logo-jop-jena.pngsmall logo Jena-Optronik GmbH
/images2/Logo_FSU_small.jpgFriedrich Schiller University Jena FSULogo FSU Jena
/images2/Logo_MPI_small.pngMax Planck Institut for Dynamics and Self-Organization
/images2/Logo_EPFL_small.pngEcole Polytechnique Federale de Lausanne
/images2/Logo_MPI_small.pngMPI Gravitational Physics Potsdam
/images2/Logo_AIP_small.jpgLeibniz-Institut for Astrophysics PotsdamLogo AIP Potsdam
/images2/Logo_FSU_small.jpgFriedrich Schiller University Jena FSULogo FSU Jena
/images2/Institutes_2011.pngRobert Filter physics institutes
/images2/Follow_the_Light.jpgRobert Filter Jena Contact

Page structure

H1 heading
(Critically important)
Robert Filter
The H1 heading is too short (13 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.
There are 33 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 Robert Filter
H2 About
H2 Contact
H2 Latest Articles
H3 A simple Python console program to interact with the new GPT4-Turbo on the updated OpenAI API
H3 Unlocking the Power of GPT-4 Turbo: Understanding the 128,000 Token Context Window
H3 An oversimplified approach to price equity securities
H3 ChatGPT: How Humans survive AI
H3 MathJax: How to solve cumulative layout shift and get 99% Google pagespeed
H3 How to bypass a CDN to access a web server directly
H3 How to use WordPress as the best static website generator!
H3 How to implement a simple Neural Network as interpolation function in Python using Keras
H3 VirtualBox: How to share a folder from Windows to a linux virtual machine
H3 How to install Windows 7 on a GIGABYTE Mini-PC
H3 A simple Flask based Jukebox with responsive web interface
H3 Load a Joomla website from static html files
H3 Pelican and Bootstrap to Relaunch robertfilter.net
H4 2022 - present
H4 2015 - 2022
H4 2010 - 2015
H4 2009 - 2010
H4 2009
H4 2008
H4 2007
H4 2003 - 2008
H5 Project Manager
H5 Spacecraft Systems Engineer
H5 Graduate Studies in Photonics
H5 Research Assistant
H5 Research Assistant Duplicate text
H5 Studies in General Relativity
H5 Studies in Astrophysics
H5 Studies in Physics
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 13 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://robertfilter.net/roberfilter.net
/papers.htmlPublications
/blog.htmlBlog
/search.htmlNofollow No Text
https://www.jenoptik.com/New window Nofollow External Subdomain JENOPTIK »
https://www.jena-optronik.de/New window Nofollow External Subdomain Jena-Optronik GmbH »
http://www.ico.uni-jena.de/New window Nofollow External Subdomain Photonics Group »
https://www.ds.mpg.de/New window Nofollow External Subdomain MPI DS »
https://www.epfl.ch/New window Nofollow External Subdomain EPFL »
https://www.aei.mpg.de/New window Nofollow External Subdomain Albert Einstein Institute »
https://www.physik.uni-jena.de/New window Nofollow External Subdomain AIP Potsdam »
https://www.physik.uni-jena.de/New window Nofollow External Subdomain FSU Jena »
https://de.linkedin.com/in/rob...New window Nofollow External Subdomain Linkedin
/blog/machine-learning/a-simpl...A simple Python console program to interact with the new GPT4-Turbo on the updated OpenAI API
/blog.htmlblog
/blog/machine-learning.htmlmachine-learning
/tag/chatgpt.htmlChatGPT
/tag/ai.htmlAI
/tag/python.htmlpython
/blog/machine-learning/a-simpl...more ...
/blog/machine-learning/gpt-4-t...Unlocking the Power of GPT-4 Turbo: Understanding the 128,000 Token Context Window
/blog.htmlText duplicate blog
/blog/machine-learning.htmlText duplicate machine-learning
/tag/chatgpt.htmlText duplicate ChatGPT
/tag/ai.htmlText duplicate AI
/tag/python.htmlPython
/blog/machine-learning/gpt-4-t...Text duplicate more ...
/blog/misc/oversimplified-appr...An oversimplified approach to price equity securities
/blog.htmlText duplicate blog
/blog/misc.htmlmisc
/blog/misc/oversimplified-appr...Text duplicate more ...
/blog/machine-learning/chatgpt...ChatGPT: How Humans survive AI
/blog.htmlText duplicate blog
/blog/machine-learning.htmlText duplicate machine-learning
/tag/chatgpt.htmlText duplicate ChatGPT
/tag/ai.htmlText duplicate AI
/blog/machine-learning/chatgpt...Text duplicate more ...
/blog/webtech/how-to-solve-mat...MathJax: How to solve cumulative layout shift and get 99% Google pagespeed
/blog.htmlText duplicate blog
/blog/webtech.htmlwebtech
/tag/mathjax.htmlMathJax
/tag/seo.htmlSEO
/tag/pagespeed.htmlpagespeed
/blog/webtech/how-to-solve-mat...Text duplicate more ...
/blog/webtech/how-to-bypass-cd...How to bypass a CDN to access a web server directly
/blog.htmlText duplicate blog
/blog/webtech.htmlText duplicate webtech
/tag/security.htmlSecurity
/blog/webtech/how-to-bypass-cd...Text duplicate more ...
/blog/webtech/how-to-use-wordp...How to use WordPress as the best static website generator!
/blog.htmlText duplicate blog
/blog/webtech.htmlText duplicate webtech
/tag/pagespeed.htmlPagespeed
/tag/wordpress.htmlWordPress
/tag/security.htmlText duplicate Security
/blog/webtech/how-to-use-wordp...Text duplicate more ...
/blog/machine-learning/how-to-...How to implement a simple Neural Network as interpolation function in Python using Keras
/blog.htmlText duplicate blog
/blog/machine-learning.htmlText duplicate machine-learning
/tag/keras.htmlKeras
/tag/python.htmlText duplicate Python
/tag/tensorflow.htmlTensorFlow
/blog/machine-learning/how-to-...Text duplicate more ...
/blog/computers/virtualbox-how...VirtualBox: How to share a folder from Windows to a linux virtual machine
/blog.htmlText duplicate blog
/blog/computers.htmlcomputers
/tag/virtualbox.htmlVirtualBox
/blog/computers/virtualbox-how...Text duplicate more ...
/blog/computers/install-window...How to install Windows 7 on a GIGABYTE Mini-PC
/blog.htmlText duplicate blog
/blog/computers.htmlText duplicate computers
/tag/windows.htmlWindows
/tag/mini-pc.htmlMini-PC
/blog/computers/install-window...Text duplicate more ...
/blog/webtech/flask-sqlite-juk...A simple Flask based Jukebox with responsive web interface
/blog.htmlText duplicate blog
/blog/webtech.htmlText duplicate webtech
/tag/python.htmlText duplicate Python
/blog/webtech/flask-sqlite-juk...Text duplicate more ...
/blog/webtech/load-joomla-webs...Load a Joomla website from static html files
/blog.htmlText duplicate blog
/blog/webtech.htmlText duplicate webtech
/tag/joomla.htmlJoomla
/tag/pagespeed.htmlText duplicate Pagespeed
/tag/python.htmlText duplicate Python
/blog/webtech/load-joomla-webs...Text duplicate more ...
/blog/webtech/relaunch-with-pe...Pelican and Bootstrap to Relaunch robertfilter.net
/blog.htmlText duplicate blog
/blog/webtech.htmlText duplicate webtech
/blog/webtech/relaunch-with-pe...Text duplicate more ...
http://docs.getpelican.com/New window Nofollow External Subdomain Pelican
https://getbootstrap.com/New window Nofollow External Bootstrap
/impressum.htmlNew window Nofollow Impressum
https://photonics101.com/New window External Photonics101
A-TITLE Educational website about photonics
https://brk-b.com/New window External BRK-B.com
A-TITLE Berkshire Hathaway Fanpage

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://robertfilter.net/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.10 seconds.
This page only loads 1 CSS files. That's ok.
This page only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (28 kB).

HTTP Response Header

NameValue
dateSat, 04 May 2024 04:59:22 GMT
content-typetext/html
last-modifiedSun, 24 Dec 2023 12:09:57 GMT
cache-controlmax-age=600
expiresSat, 04 May 2024 05:09:22 GMT
varyAccept-Encoding
cf-cache-statusDYNAMIC
report-to{"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=fIv68C%2Bf1ofDSNhtF1xbou7zgvPKKe54US0Y76IZ4oTUwEHI%2BFVSiMqTO8egHnJTge1ux7ZbKC4F2eIE92KASSILJU1lW5yWKj%2FBMUVCJv4HkvlqhglBUoy1l4vzJuaWQDe6"}],"group":"cf-nel","max_age":604800}
nel{"success_fraction":0,"report_to":"cf-nel","max_age":604800}
servercloudflare
cf-ray87e5ebc72dea1cc7-FRA
content-encodinggzip
alt-svch3=":443"; ma=86400
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page has only a few links from other websites.
This page only has backlinks from 11 referring domains.
This page only has 29 backlinks.
This page only has few backlinks from 10 different ip addresses.
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

robertfilter.net
Robert Filter - roberfilter.net
Personal website of Robert Filter, physicist and space enthusiast

Most important keywords

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

KeywordResultRecheck
Filter91%Check
Robert91%Check
Robert Filter91%Check
net66%Check
website54%Check
WordPress as49%Check
Responsive Web48%Check
Web Server48%Check
roberfilter46%Check
Thu46%Check
Show more keywords and terms

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