Os-s.net - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
78% 
Page structure
97% 
Link structure
88% 
Server
70% 
External factors
100% 
SEO Score
Response time
0.07 s
File size
26.10 kB
Words
931
Media files
23
Number of links
25 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
OpenSource Security GmbH | Embedded Security | Schulungen | Linux
The page title should be shorter than 580 pixels. It is 636 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
OpenSource Security - IT Security für Embedded-, IoT- und Linux Systeme und Schulungen im OpenSource Bereich
The length of the meta description is perfect. (717 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://os-s.net/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: de
Language defined in HTML: de
Server location: United States of America
The following language is defined by HTML: de
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)
The favicon is linked correctly.

Meta tags

NameValue
generatorHugo 0.111.3
viewportwidth=device-width, initial-scale=1
descriptionOpenSource Security - IT Security für Embedded-, IoT- und Linux Systeme und Schulungen im OpenSource Bereich
keywordsIT Security, Pentesting, Open Source, Free Software, Linux, Embedded Devices, Eingebettete Systeme, BSI, Bundesamt für Sicherheit in der Informationstechnik
authorOpenSource Security GmbH
og:site_nameOpenSource Security GmbH | Embedded Security | Schulungen | Linux
og:titleOpenSource Security GmbH | Embedded Security | Schulungen | Linux
og:urlhttps://os-s.net/
og:imagehttps://os-s.netimages/
langde
twitter:titleOpenSource Security GmbH | Embedded Security | Schulungen | Linux
twitter:urlhttps://os-s.net/
twitter:imagehttps://os-s.netimages/
twitter:cardEmpty
X-UA-CompatibleIE=edge
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 931 words. That's ok.
38.7% 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.
23 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 13.17 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 10 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 19 tags for this page.
Image SEO
(Somewhat important)
12 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)
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
https://os-s.net/images/logo.pngOpenSource Security
...8421_1183_280x0_resize_q75_h2_box_3.webpburg
...efd82e58b5ec_18911_0x80_resize_box_3.pngicon
...6e5448d9bb328_2411_0x80_resize_box_3.pngicon
...055e8c95a9ca_17765_0x80_resize_box_3.pngicon
...6e5448d9bb328_2411_0x80_resize_box_3.pngicon
...d332aac2829b_19633_0x80_resize_box_3.pngicon
...650c2_32467_280x0_resize_q75_h2_box.webpNo alt attribute provided
...c11_26877_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...3e52e_28985_280x0_resize_q75_h2_box.webpNo alt attribute provided
...f759_6888_280x0_resize_q75_h2_box_1.webpNo alt attribute provided
...dba_75808_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...cb2_28645_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...ce_122320_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...f3e_48400_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...ad_148635_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...500_20680_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...bd5_1077859_280x0_resize_q75_h2_box.webpNo alt attribute provided
...4ec_12971_280x0_resize_q75_h2_box_3.webpNo alt attribute provided
...f5_358103_280x0_resize_q75_h2_box_3.webpRalf Spenneberg
...d6_165118_280x0_resize_q75_h2_box_3.webpHendrik Schwartke
...f1_349177_280x0_resize_q75_h2_box_3.webpClaudia Spenneberg
https://os-s.net/images/pruefstelle.pngPrüfstelle BSI-APS-9058

Page structure

H1 heading
(Critically important)
Wir machen Sicherheit einfach.
The H1 heading is perfect.
Headings
(Important)
There are 26 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 Wir machen Sicherheit einfach.
H2 Dienstleistungen
H2 Forschung & Publikationen
H2 Partner & Kunden
H2 Über uns
H2 Kontakt
H3 IoT-Penetrationstests
H3 Beschleunigte Sicherheitszertifizierung
H3 Monitoring mit Checkmk
H3 Schulungen
H3 Perimeter
H3 Netze absichern
H3 CVE Numbering Authority (CNA)
H3 tacNET
H3 ICShell
H3 Übungszentrum Netzverteidigung
H3 Verantwortungsvolle Publikation
H3 RFID
H3 SELinux/AppArmor
H3 vUSBf
H3 LibreOffice
H3 Partner
H3 Kunden
H3 Ralf Spenneberg
H3 Hendrik Schwartke
H3 Claudia Spenneberg
Some anchor texts are used more than once.
1 links don't have an anchor text.
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 12 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://os-s.net/IMG-ALT OpenSource Security
https://os-s.net/Anchor Dienstleistungen
/services/trainings/Schulungen
https://os-s.net/Anchor Partner & Kunden
https://os-s.net/Anchor Forschung & Publikationen
https://os-s.net/Anchor Über uns
https://os-s.net/Anchor Kontakt
https://os-s.net/en/EN
/services/pentestingMehr erfahren
https://os-s.net/services/bszText duplicate Mehr erfahren
https://os-s.net/services/checkmkText duplicate Mehr erfahren
/services/trainingsSchulungsübersicht
/services/trainingsText duplicate Mehr erfahren
https://os-s.net/publicationsUnsere Publikationen
https://os-s.net/research/cnaText duplicate Mehr erfahren
https://os-s.net/research/tacnetText duplicate Mehr erfahren
https://os-s.net/research/icshellText duplicate Mehr erfahren
/research/uezentrumText duplicate Mehr erfahren
/research/responsible-disclosureText duplicate Mehr erfahren
https://os-s.net/research/rfidText duplicate Mehr erfahren
https://os-s.net/research/selinuxText duplicate Mehr erfahren
https://os-s.net/research/vusbfText duplicate Mehr erfahren
/research/libreofficeText duplicate Mehr erfahren
https://www.allianz-fuer-cyber...External Subdomain Allianz für Cybersicherheit
https://checkmk.com/External Checkmk
https://www.greenbone.net/External Subdomain Greenbone Networks GmbH
https://kolabsystems.com/External Kolab Systems AG
https://www.bsi.bund.de/External Subdomain Bundesamt für Sicherheit in der Informationstechnik
https://www.siemens.com/External Subdomain Siemens AG
https://www.karlstorz.com/External Subdomain KARL STORZ SE & Co. KG
https://www.insys-tec.de/External Subdomain Insys Microelectronics GmbH
https://www.ineoskoeln.de/External Subdomain INEOS in Köln
https://www.ochtrup.de/External Subdomain Stadt Ochtrup
https://www.swte-netz.de/External Subdomain SWTE Netz GmbH & Co. KG
https://www.ages.de/External Subdomain AGES Maut System GmbH & Co. KG
https://os-s.net/privacy/Datenschutzinformationen
https://os-s.net/privacyNo Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://os-s.net/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
This page loads 5 CSS files. This may affect the page load time negatively.
This page loads 10 JavaScript files. This may affect the load time negatively.
The page response time is excellent with 0.07 seconds.
The file size of the HTML document is fine (26 kB).

HTTP Response Header

NameValue
dateFri, 21 Jun 2024 21:23:56 GMT
serverApache/2.4.59 (Debian)
referrer-policyno-referrer
content-security-policybase-uri 'self'; form-action 'self'; frame-ancestors 'self'; default-src 'self'; frame-src https://www.google.com; img-src 'self' data: https://analytics.spenneberg.net; script-src 'self' https://analytics.spenneberg.net/piwik/ https://www.google.com/recaptcha/ https://www.gstatic.com/recaptcha/; style-src 'self' 'unsafe-inline'
strict-transport-securitymax-age=31536000; includeSubDomains; preload
permissions-policygeolocation=(), camera=(), microphone=()
x-frame-optionsSAMEORIGIN
x-xss-protection1; mode=block
last-modifiedWed, 08 May 2024 13:17:12 GMT
etag"6883-617f11ee20c0a-gzip"
accept-rangesbytes
varyAccept-Encoding
content-encodinggzip
x-content-type-optionsnosniff
content-length7369
content-typetext/html
statuscode200
http_versionHTTP/1.1

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This website has excellent links from other websites.
This page has backlinks from 70 referring domains.
This page has 136 backlinks.
This page has backlinks from 64 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

User-Agent: *
Allow: /

Similar sites

Search preview

os-s.net
OpenSource Security GmbH | Embedded Security | Schulungen | Linux
OpenSource Security - IT Security für Embedded-, IoT- und Linux Systeme und Schulungen im OpenSource Bereich

Most important keywords

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

KeywordResultRecheck
Schulungen61%Check
Linux61%Check
Security59%Check
OpenSource59%Check
OpenSource Security59%Check
OpenSource Security GmbH55%Check
Embedded Security55%Check
Sicherheit54%Check
Embedded54%Check
Security GmbH53%Check
Show more keywords and terms

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