Datenzone.de - SEO Checker

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Overview of the SEO Check
Meta information
58% 
Page quality
83% 
Page structure
60% 
Link structure
92% 
Server
83% 
External factors
32% 
SEO Score
Response time
0.18 s
File size
49.10 kB
Words
1944
Media files
3
Number of links
40 internal / 23 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Erik Tews
The page title is too short. (87 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-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 XHTML 1.0 Transitional 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
robotsmax-image-preview:large
generatorWordPress 6.2.6
viewportwidth=device-width
langen-us
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
These Typos were found:
  • everytime => every time
There are 4 text duplicates on this page:
  • Duplicate 1: cert = /etc/stunnel/cert-server.pem key = /etc/stunnel/key-server.pem ...
  • Duplicate 2: cert = /etc/ssl/stunnel/cert-server.pem key = /etc/ssl/stunnel/key-ser...
This page contains 1944 words. That's ok.
32.4% 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.
29 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
The average number of words per sentence of 12.88 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" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 39 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)
This page uses Google authorship information without an image.
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
...atex.php?latex=p&bg=ffffff&fg=000000&s=0pp
...atex.php?latex=p&bg=ffffff&fg=000000&s=0pp
...hp?latex=(p-1)/2&bg=ffffff&fg=000000&s=0(p-1)/2(p-1)/2

Page structure

H1 heading
(Critically important)
Erik Tews
Too many H1 headings
The H1 heading is too short (9 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings do not have any content.

Heading structure

Heading levelContent
H1 Erik Tews
H1 Install with opkg
H1 Install with ImageBuilder
H1 Configuring stunnel
H1 Certificates
H1 Stunnel
H1 Android
H2 Empty heading
H2 Using Certificate-Transparency to grab a list of all hostnames a CA has issued certificates for
H2 How to get the hostnames from the log
H2 Future work
H2 Better seeded of the OpenSSL random number generator for gensafeprime
H2 Generating safe prime numbers in Python
H2 Installing Stunnel on OpenWRT
H2 Using SSL/TLS Client Certificate Authentification in Android Applications
H2 A blog on cryptographie
H3 Recent Posts
H3 Archives
H3 Meta
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 23 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.datenzone.de/blog/Subdomain Home
/blog/about/Subdomain Contact
/blog/photos/Subdomain Photos
/blog/projects/Subdomain Projects
/blog/publications/Subdomain Publications
/blog/academic-cv/Subdomain Academic CV
https://www.datenzone.de/blog/Subdomain Erik Tews
/blog/2015/08/using-certificat...Subdomain Using Certificate-Transparency to grab a list of all hostnames a CA has issued certificates for
A-TITLE Permalink to Using Certificate-Transparency to grab a list of all hostnames a CA has issued certificates for
/blog/author/erik/Subdomain erik
A-TITLE View all posts by erik
/blog/2015/08/using-certificat...Subdomain August 31, 2015
A-TITLE 19:36
http://www.certificate-transpa...External Subdomain Certificate Transparency
https://tools.ietf.org/html/rf...External Subdomain Anchor tbsCertificate structure
https://github.com/eriktews/ce...External is available on github
/blog/2015/07/better-seeded-of...Subdomain Better seeded of the OpenSSL random number generator for gensafeprime
A-TITLE Permalink to Better seeded of the OpenSSL random number generator for gensafeprime
/blog/author/erik/Subdomain Text duplicate erik
A-TITLE View all posts by erik
/blog/2015/07/better-seeded-of...Subdomain July 27, 2015
A-TITLE 14:17
https://github.com/eriktews/ge...External gensafeprime
https://github.com/openssl/ope...External manpage of OpenSSLÂ BN_generate_prime
https://github.com/eriktews/ge...External patch
/blog/2012/05/generating-safe-...Subdomain Generating safe prime numbers in Python
A-TITLE Permalink to Generating safe prime numbers in Python
/blog/author/erik/Subdomain Text duplicate erik
A-TITLE View all posts by erik
/blog/2012/05/generating-safe-...Subdomain May 7, 2012
A-TITLE 18:10
https://en.wikipedia.org/wiki/...External Subdomain safe prime numbers
https://en.wikipedia.org/wiki/...External Subdomain arbitrary precision integer arithmetic
http://docs.python.org/referen...External Subdomain can be overloaded
https://code.google.com/p/gmpy/External Subdomain gmpy
http://gmplib.org/External GMP library
https://www.openssl.org/External Subdomain OpenSSL
https://github.com/eriktews/ge...External downloaded
http://pypi.python.org/pypi/ge...External Subdomain available
/blog/2012/01/installing-stunn...Subdomain Installing Stunnel on OpenWRT
A-TITLE Permalink to Installing Stunnel on OpenWRT
/blog/author/erik/Subdomain Text duplicate erik
A-TITLE View all posts by erik
/blog/2012/01/installing-stunn...Subdomain January 29, 2012
A-TITLE 23:04
http://www.stunnel.org/External Subdomain Stunnel
/blog/2012/01/using-ssltls-cli...Subdomain in my last posting
http://www.android.com/develop...External Subdomain Android
https://openwrt.org/External OpenWRT
http://wiki.openwrt.org/doc/ho...External Subdomain general documentation
http://wiki.openwrt.org/doc/ho...External Subdomain ImageBuilder
/blog/2012/01/using-ssltls-cli...Subdomain Using SSL/TLS Client Certificate Authentification in Android Applications
A-TITLE Permalink to Using SSL/TLS Client Certificate Authentification in Android Applications
/blog/author/erik/Subdomain Text duplicate erik
A-TITLE View all posts by erik
/blog/2012/01/using-ssltls-cli...Subdomain January 14, 2012
A-TITLE 04:27
/blog/2012/01/using-ssltls-cli...Subdomain Anchor 1 comment
/blog/2012/01/a-blog-on-crypto...Subdomain A blog on cryptographie
A-TITLE Permalink to A blog on cryptographie
/blog/author/erik/Subdomain Text duplicate erik
A-TITLE View all posts by erik
/blog/2012/01/a-blog-on-crypto...Subdomain January 4, 2012
A-TITLE 01:57
http://cryptanalysis.eu/External URL anchor text
http://cryptanalysis.eu/
/blog/feed/Subdomain RSS Feed
A-TITLE RSS Feed
/blog/2015/08/using-certificat...Subdomain Text duplicate Using Certificate-Transparency to grab a list of all hostnames a CA has issued certificates for
/blog/2015/07/better-seeded-of...Subdomain Text duplicate Better seeded of the OpenSSL random number generator for gensafeprime
/blog/2012/05/generating-safe-...Subdomain Text duplicate Generating safe prime numbers in Python
/blog/2012/01/installing-stunn...Subdomain Text duplicate Installing Stunnel on OpenWRT
/blog/2012/01/using-ssltls-cli...Subdomain Text duplicate Using SSL/TLS Client Certificate Authentification in Android Applications
/blog/2015/08/Subdomain August 2015
/blog/2015/07/Subdomain July 2015
/blog/2012/05/Subdomain May 2012
/blog/2012/01/Subdomain January 2012
/blog/wp-login.phpSubdomain Log in
/blog/feed/Subdomain Entries feed
/blog/comments/feed/Subdomain Comments feed
https://wordpress.org/External WordPress.org
http://zww.me/External zBench
http://wordpress.org/External WordPress

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.datenzone.de/blog/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
The X-powered header is sent within the response header. (unnecessary)
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.18 seconds.
The file size of the HTML document is fine (49 kB).

HTTP Response Header

NameValue
servernginx/1.25.5
dateWed, 26 Jun 2024 02:23:58 GMT
content-typetext/html; charset=UTF-8
content-length11621
x-powered-byPHP/8.2.19
link<https://www.datenzone.de/blog/wp-json/>; rel="https://api.w.org/"
varyAccept-Encoding
content-encodinggzip
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 4 referring domains.
This page only has 784 backlinks.
This page only has few backlinks from 4 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

www.datenzone.de › blog
Erik Tews

Most important keywords

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

KeywordResultRecheck
Erik62%Check
Tews62%Check
Erik Tews62%Check
log48%Check
Stunnel47%Check
install stunnel45%Check
ssl stunnel45%Check
Installing Stunnel44%Check
Certificate43%Check
prime43%Check
Show more keywords and terms

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