Ch-open.ch - SEO Checker

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Overview of the SEO Check
Meta information
72% 
Page quality
70% 
Page structure
58% 
Link structure
50% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.13 s
File size
124.70 kB
Words
1398
Media files
11
Number of links
63 internal / 141 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Home < CH Open
The page title is too short. (160 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)
https://www.ch-open.ch/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: de
Language defined in HTML: de-de
Server location: Switzerland
The following language is defined by HTML: de-de
Alternate/Hreflang Links
(Somewhat important)
The specified alternate links have no errors.
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
robotsindex, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1
generatorWPML ver:4.7.6 stt:1,4,3;
msapplication-TileImagehttps://www.ch-open.ch/wp-content/uploads/2017/03/favicon-300x300.png
article:modified_time2025-06-19T13:20:09+00:00
langde-de
twitter:cardsummary_large_image
twitter:site@ch_open
og:localede_DE
og:typewebsite
og:titleHome
og:descriptionVerein zur Förderung von Open Source Software und offenen Standards in der Schweiz Jetzt Mitglied werden CH Open im Porträt News Alle News Events Alle Events Herzlich Willkommen bei CH Open Die interaktive Broschüre mit allen Aktivitäten von CH Open. Download Broschüre als PDF Aktivitäten CH Open Business Apéro – OBA Das Aktuellste zu Open…
og:urlhttps://www.ch-open.ch/
og:site_nameCH Open
og:imagehttps://www.ch-open.ch/wp-content/uploads/2022/10/frontpage-flip.jpg
X-UA-CompatibleIE=edge
charsetUTF-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
These Typos were found:
  • regelmässig => regelmäßig
  • anschliessenden => anschließenden
  • grosser => großer
This page contains 1398 words. That's ok.
25.5% of the text are stop words.
The page contains a listing, which indicates a good text layout.
23 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 13.44 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width, initial-scale=1.0" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
Some tags are too long. With 503 characters this one is longer than 70 characters:
"open source software steht für innovation, verbessert die interoperabilität, stärkt den datenschutz un..."
Image SEO
(Somewhat important)
7 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
.../uploads/2021/12/logo_chopen_web_big.pngCH Open
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64No alt attribute provided
data:[...] Base64frontpage-flipfrontpage-flip
data:[...] Base64OSSD_Logo_rgb_png_bigOSSD_Logo_rgb_png_big
Video URLWidthHeight
...CH-Open-2022-Broschuere-Trailer-.mp4?_=1640360

Page structure

H1 heading
(Critically important)
Verein zur Förderung von Open Source Software und offenen Standards in der Schweiz
The H1 heading is perfect.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 40 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 Verein zur Förderung von Open Source Software und offenen Standards in der Schweiz
H2 News
H2 Digital Economy Award 2025: Bewerbungs- und Nominierungsphase gestartet
H2 YaK 2.0 – Deploy everything, everywhere
H2 Open Source Software ist allgegenwärtig –neu auch in der künstlichen Intelligenz
H2 Events
H2 CH Open Business Café
H2 CH Open Business Apéro – OBA
H2 Workshop-Tage 2025
H2 DINAcon 2025
H2 Herzlich Willkommen bei CH Open
H2 Aktivitäten
H2 Unsere Mitglieder
H2 50 Premiummitglieder
H2 5 Ehrenmitglieder
H2 184 Einzelmitglieder
H2 Auszubildende Mitglieder
H2 56 Kollektivmitglieder
H2 OSS DIRECTORY
H2 Open Source Profis gesucht! Finden Sie Ihre passende Stelle!
H2 Über CH Open
H2 Jetzt Mitglied werden!
H4 03.04.2025
H4 04.03.2025
H4 Bern, 26.06.2024
H4 CH Open Business Apéro - OBA
H4 CH Open Business Café - OBC
H4 CH Open Business Lunch - OBL
H4 DINAcon
H4 Open Education Day
H4 OSS Directory
H4 Parldigi
H4 Workshop-Tage
H4 Videokonferenz-Server mit BigBlueButton
H4 Open Education Server
H4 Vorstand
H4 CH Open Mitglieder
H4 Statuten
H4 Presse
H4 Kontakt
Anchor text is an URL
Some anchor texts are used more than once.
7 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 too many external links (141) on this page.

Found links on this page

LinkAttributesAnchor text
https://www.ch-open.ch/Anchor Zum Inhalt springen
https://ossdirectory.com/New window External OSS Directory
http://www.ch-open.ch/Subdomain Menu
https://www.ch-open.ch/Subdomain Home
/aktivitaeten/Subdomain Aktivitäten
/ch-open-business-events/Subdomain CH Open Business Events
http://ossdirectory.com/New window External Text duplicate OSS Directory
/open-source-ai-workshops/Subdomain Open Source AI Workshops
/open-source-studie-schweiz-2024/Subdomain Open Source Studie Schweiz 2024
https://openeducationday.ch/New window External Open Education Day
https://workshoptage.ch/New window External Workshop-Tage
https://dinacon.ch/New window External DINAcon
http://www.digitale-nachhaltig...New window External Subdomain Parldigi
/bigbluebutton/Subdomain Open Source-Video-Konferenz BigBlueButton
https://www.openeduserver.ch/New window External Subdomain Open Education Server
/ueber-ch-open/Subdomain Über CH Open
/jubilaeumsfeier-40-jahre-ch-o...Subdomain Jubiläumsfeier – 40 Jahre CH Open
https://www.unserebroschuere.c...External Subdomain Interaktive Broschüre – CH Open kennen lernen!
/ueber-ch-open/vorstand/Subdomain Vorstand
/ueber-ch-open/vereinsgeschichte/Subdomain Vereinsgeschichte
/ueber-ch-open/mitgliedschaft/Subdomain Mitgliedschaft
/ueber-ch-open/statuten/Subdomain Statuten
/ueber-ch-open/presse/Subdomain Presse
/ueber-ch-open/newsletter/Subdomain Newsletter
/ueber-ch-open/shop/Subdomain Shop
/category/news/Subdomain News
/category/events/Subdomain Events
http://www.ossdirectory.com/os...New window External Subdomain Jobs
/ueber-ch-open/mitgliedschaft/Subdomain Jetzt Mitglied werden
/open-cloud-day/Subdomain Open Cloud Day (Archiv)
https://www.ch-open.ch/kontakt/Subdomain Kontakt
https://www.ch-open.ch/fr/Subdomain FR
A-TITLE Wechseln zu FR
https://www.ch-open.ch/en/Subdomain EN
A-TITLE Wechseln zu EN
https://www.ch-open.ch/Subdomain IMG-ALT CH Open
/ueber-ch-open/mitgliedschaft/Subdomain Anchor Text duplicate Jetzt Mitglied werden
/ueber-ch-open/Subdomain Anchor CH Open im Porträt
/digital-economy-award-2025-be...Subdomain A-TITLE Digital Economy Award 2025: Bewerbungs- und Nominierungsphase gestartet
/digital-economy-award-2025-be...Subdomain Text duplicate Digital Economy Award 2025: Bewerbungs- und Nominierungsphase gestartet
A-TITLE Digital Economy Award 2025: Bewerbungs- und Nominierungsphase gestartet
/digital-economy-award-2025-be...Subdomain No Text
/yak-2-0-deploy-everything-eve...Subdomain A-TITLE YaK 2.0 – Deploy everything, everywhere
/yak-2-0-deploy-everything-eve...Subdomain Text duplicate YaK 2.0 – Deploy everything, everywhere
A-TITLE YaK 2.0 – Deploy everything, everywhere
/yak-2-0-deploy-everything-eve...Subdomain No Text
/open-source-software-ist-allg...Subdomain A-TITLE Open Source Software ist allgegenwärtig –neu auch in der künstlichen Intelligenz
/open-source-software-ist-allg...Subdomain Text duplicate Open Source Software ist allgegenwärtig –neu auch in der künstlichen Intelligenz
A-TITLE Open Source Software ist allgegenwärtig –neu auch in der künstlichen Intelligenz
/open-source-software-ist-allg...Subdomain No Text
/category/news/Subdomain Alle News
/ch-open-business-cafe-3/Subdomain A-TITLE CH Open Business Café
/ch-open-business-cafe-3/Subdomain Text duplicate CH Open Business Café
A-TITLE CH Open Business Café
/ch-open-business-cafe-3/Subdomain No Text
/ch-open-business-apero-oba/Subdomain A-TITLE CH Open Business Apéro – OBA
/ch-open-business-apero-oba/Subdomain Text duplicate CH Open Business Apéro – OBA
A-TITLE CH Open Business Apéro – OBA
/ch-open-business-apero-oba/Subdomain No Text
/workshop-tage-2025/Subdomain A-TITLE Workshop-Tage 2025
/workshop-tage-2025/Subdomain Text duplicate Workshop-Tage 2025
A-TITLE Workshop-Tage 2025
/workshop-tage-2025/Subdomain No Text
/dinacon-2025/Subdomain A-TITLE DINAcon 2025
/dinacon-2025/Subdomain Text duplicate DINAcon 2025
A-TITLE DINAcon 2025
/dinacon-2025/Subdomain No Text
/category/events/Subdomain Alle Events
/wp-content/uploads/2022/10/CH...Subdomain URL anchor text
https://www.ch-open.ch/wp-content/uploads/2022/10/CH-Open-2022-Broschuere-Trailer-.mp4
https://www.unserebroschuere.c...External Subdomain IMG-ALT frontpage-flip
/wp-content/uploads/2022/10/CH...New window Subdomain Download Broschüre als PDF
/ch-open-business-events/ch-op...New window Subdomain OBA
/ch-open-business-events/ch-op...New window Subdomain OBC
/ch-open-business-events/ch-op...New window Subdomain OBL
https://dinacon.ch/New window External Text duplicate DINAcon
https://openeducationday.ch/New window External Text duplicate Open Education Day
https://www.ossdirectory.com/homeNew window External Subdomain Text duplicate OSS Directory
http://www.digitale-nachhaltig...New window External Subdomain Text duplicate Parldigi
https://workshoptage.ch/New window External Workshoptage
/bigbluebutton/angebot-bigblue...New window Subdomain BigBlueButton
https://www.openeduserver.ch/New window External Subdomain Open Edu Server
http://www.mimacom.ch/New window External Subdomain mimacom ag
http://www.ibm.com/ch-de/New window External Subdomain IBM Schweiz AG
https://opsone.ch/de/homeNew window External Ops One AG
https://www.limetree-group.com/New window External Subdomain Limetree Group
http://www.snowflake.ch/New window External Subdomain snowflake productions gmbh
http://start.tegonal.com/New window External Subdomain Tegonal Genossenschaft
http://ch.redhat.com/New window External Subdomain Red Hat Switzerland
https://www.cloudscale.ch/deNew window External Subdomain cloudscale.ch AG
http://www.puzzle.ch/New window External Subdomain Puzzle ITC GmbH
http://www.netcetera.ch/New window External Subdomain Netcetera AG
http://www.six-group.com/New window External Subdomain SIX Group Services AG
http://www.adnovum.ch/New window External Subdomain AdNovum Informatik AG
https://www.baloise.com/de/hom...New window External Subdomain Baloise Versicherung AG
http://www.securix.swiss/New window External Subdomain Securix AG
http://www.suse.com/New window External Subdomain SUSE
http://www.magnolia-cms.com/New window External Subdomain Magnolia International Ltd.
https://whyopencomputing.ch/New window External why! open computing SA
https://open-circle.ch/New window External Open Circle AG
http://www.md-systems.ch/New window External Subdomain MD Systems GmbH
http://www.digicomp.ch/New window External Subdomain Digicomp Academy AG
https://www.b1-systems.de/New window External Subdomain B1 Systems GmbH
https://newbit.ch/New window External newbIT AG
http://www.liip.ch/New window External Subdomain Liip AG
http://www.abf.ch/New window External Subdomain ABF Informatik AG
https://www.be.ch/New window External Subdomain Kanton Bern
https://typo3.com/New window External TYPO3 GmbH
http://www.uzh.ch/de.htmlNew window External Subdomain Universität Zürich
https://www.cyon.ch/New window External Subdomain cyon GmbH
https://adfinis.com/New window External Adfinis AG
http://comerge.net/New window External Comerge AG
http://vshn.ch/New window External VSHN AG
http://www.intersys.ch/New window External Subdomain Intersys AG
http://www.stepping-stone.ch/New window External Subdomain stepping stone AG
http://www.hi-ag.ch/New window External Subdomain Hürlimann Informatik AG
https://siemens.com/New window External Siemens Schweiz AG
http://www.avintis.com/New window External Subdomain Avintis SA
http://www.dbi-services.com/New window External Subdomain dbi services
http://www.abilium.com/New window External Subdomain Abilium GmbH
http://www.boll.ch/New window External Subdomain BOLL Engineering AG
http://www.4teamwork.ch/New window External Subdomain Fabasoft 4teamwork AG
http://www.univention.de/?piwi...New window External Subdomain Univention GmbH
https://inventage.com/New window External Inventage AG
https://www.ims.ch/New window External Subdomain IMS Informatik und Management Service AG
http://www.bedag.ch/New window External Subdomain Bedag Informatik AG
http://metasfresh.com/New window External metas GmbH
https://geops.com/deNew window External geOps AG
https://opengis.ch/New window External OPENGIS.ch
https://syde.com/de/New window External Syde GmbH
http://www.leanux.ch/New window External Subdomain leanux.ch AG
http://www.camptocamp.com/New window External Subdomain Camptocamp SA
http://www.pyx.ch/New window External Subdomain Ammann Joe
http://www.netweaver.ch/New window External Subdomain Burri Ursula
https://www.jpk.ch/ch-openNew window External Subdomain Kousz Jean-Pierre
http://www.abb.com/chNew window External Subdomain ABB Information Systems Ldt
https://www.bger.ch/New window External Subdomain Bundesgericht
http://www.procivis.ch/New window External Subdomain Procivis AG
https://www.linkedin.com/compa...New window External Subdomain iQiliO GmbH
http://www.swisstopo.ch/New window External Subdomain swisstopo
https://app.ch/New window External APP Unternehmensberatung AG
https://corporate.migros.ch/deNew window External Subdomain Migros-Genossenschafts-Bund
http://www.iwf.ch/web-solutionsNew window External Subdomain IWF AG
http://www.vnc.biz/New window External Subdomain VNC – Virtual Network Consult AG
https://giti-edu.ch/New window External GITI
http://www.substring.ch/New window External Subdomain Substring GmbH
https://www.zebis.ch/New window External Subdomain zebis – Portal für Lehrpersonen
https://unchained.shop/New window External Unchained Commerce GmbH
http://www.panorgan.ch/New window External Subdomain Panorgan AG
https://www.elca.ch/New window External Subdomain ELCA Informatik AG
http://www.uzh.ch/New window External Subdomain Text duplicate Universität Zürich
http://www.bern.ch/New window External Subdomain Informatikdienste der Stadt Bern
https://www.mint-system.ch/New window External Subdomain Mint System GmbH
http://www.tocco.ch/New window External Subdomain Tocco AG
http://www.zuehlke.com/New window External Subdomain Zühlke Engineering AG
http://www.zebbra.ch/New window External Subdomain zebbra AG
https://www.fugu.ch/New window External Subdomain fugu GmbH
http://www.medidata.ch/New window External Subdomain MediData AG
http://www.ergon.ch/New window External Subdomain Ergon Informatik AG
http://www.ergonomics.ch/New window External Subdomain Ergonomics AG
http://www.ten.ch/New window External Subdomain TEN AG Informatik
https://stadt.winterthur.ch/ge...New window External Subdomain Informatikdienste Winterthur (IDW)
https://friendly.ch/New window External Friendly GmbH
http://businessdecision.ch/New window External Business & Decision Switzerland
http://www.pyx.ch/New window External Subdomain Pyx Engineering AG
http://www.mobi.ch/New window External Subdomain Schweizerische Mobiliar Versicherungsgesellschaft AG
https://www.mesch.ch/New window External Subdomain Mesch Web Consulting & Design GmbH
https://www.ophion.ch/New window External Subdomain Ophion Consulting GmbH
https://www.alinto.com/de-ch/New window External Subdomain Alinto AG
https://www.fromdual.com/New window External Subdomain FromDual GmbH
https://acend.ch/New window External acend gmbh
https://www.integon.ch/New window External Subdomain Integon GmbH
http://www.oetiker.ch/New window External Subdomain OETIKER+PARTNER AG
http://lambda-it.ch/New window External Lambda IT
http://www.zhaw.ch/New window External Subdomain ZHAW School of Engineering
https://www.cleanmail.ch/New window External Subdomain Cleanmail AG
https://www.piratenpartei.ch/New window External Subdomain Piratenpartei Schweiz
https://www.scs.ch/home.htmlNew window External Subdomain Supercomputing Systems AG
https://www.bischoff-ag.ch/de/New window External Subdomain Bischoff AG
http://www.brain-tec.ch/New window External Subdomain brain-tec AG
http://www.netnea.com/New window External Subdomain netnea ag
https://www.iterativ.ch/New window External Subdomain Iterativ GmbH
http://www.semafor.ch/New window External Subdomain Semafor Informatik & Energie AG
http://www.frentix.com/New window External Subdomain frentix GmbH
http://www.helbling.ch/New window External Subdomain Helbling Technik AG
http://www.educa.ch/New window External Subdomain educa.ch
http://www.bvet.admin.ch/ivi/New window External Subdomain Institut für Virologie und Immunologie IVIc/o DLZ FI EFD
https://www.north-47.com/New window External Subdomain N47 AG
http://www.ossdirectory.com/home/New window External Subdomain Text duplicate OSS Directory
http://www.ossdirectory.com/os...New window External Subdomain Stellenangebote
/ueber-ch-open/vorstand/Subdomain Zum Vorstand
/ueber-ch-open/mitgliedschaft/Subdomain Mitgliedschaften
/ueber-ch-open/statuten/Subdomain Text duplicate Statuten
/ueber-ch-open/presse/Subdomain Text duplicate Presse
https://www.ch-open.ch/kontakt/Subdomain Kontakt aufnehmen
http://www.jug.ch/New window External Subdomain Java User Group Switzerland
A-TITLE Öffnet externen Link in neuem Fenster
http://www.swissict.ch/New window External Subdomain swissICT
A-TITLE Öffnet externen Link in neuem Fenster
http://tinyurl.com/53dmw2bpExternal Trust Pharmacy
http://tinyurl.com/bde8zwjnExternal Happy Family Store
http://tinyurl.com/38btvaruExternal Sky Pharmacy
http://tinyurl.com/apprmypjExternal Pharmacy Mall
http://tinyurl.com/y8nxneenExternal Canadian Family Pharmacy
http://tinyurl.com/bdfjxr69External Trusted Tablets
http://tinyurl.com/bded2tt6External Canadian Health and Care Mall
http://tinyurl.com/5n7y3c3bExternal Secure Tabs
http://tinyurl.com/2sv3je5nExternal World Pharmacy Store
/ueber-ch-open/mitgliedschaft/Subdomain Jetzt Mitglied werden!
https://twitter.com/ch_openNew window External No Text
https://www.youtube.com/user/o...New window External Subdomain No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://www.ch-open.ch/impressum/Subdomain Impressum
https://twitter.com/ch_openNew window External A-TITLE Twitter
https://www.youtube.com/user/o...New window External Subdomain A-TITLE Youtube
https://www.linkedin.com/compa...New window External Subdomain A-TITLE LinkedIn

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.ch-open.ch/"
HTTP header
(Important)
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 0.13 seconds.
The file size of the HTML document is fine (125 kB).

HTTP Response Header

NameValue
last-modifiedSat, 02 Aug 2025 13:15:54 GMT
content-typetext/html; charset=UTF-8
cache-controlpublic, max-age=0
expiresSat, 02 Aug 2025 17:55:15 GMT
content-encodingbr
varyAccept-Encoding,Accept-Encoding
dateSat, 02 Aug 2025 17:55:15 GMT
alt-svch3=":443"; ma=2592000, h3-29=":443"; ma=2592000, h3-Q050=":443"; ma=2592000, h3-Q046=":443"; ma=2592000, h3-Q043=":443"; ma=2592000, quic=":443"; ma=2592000; v="43,46"
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 135 referring domains.
This page has 2,615 backlinks.
This page has backlinks from 117 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# This space intentionally left blank
# If you want to learn about why our robots.txt looks like this, read this post: https://yoa.st/robots-txt
User-Agent: *
Disallow: /suggest/?*

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www.ch-open.ch
Home < CH Open

Most important keywords

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

KeywordResultRecheck
Open86%Check
CH Open86%Check
Open Source72%Check
CH Open im72%Check
CH Open Business71%Check
zu Open70%Check
Open Source Software67%Check
zu Open Source66%Check
Open Education64%Check
Open Source AI63%Check
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