Bluemarlin-koeln.de - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
82% 
Page structure
50% 
Link structure
45% 
Server
100% 
External factors
81% 
SEO Score
Response time
0.27 s
File size
127.80 kB
Words
1026
Media files
21
Number of links
92 internal / 6 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Tauchsport BlueMarlin GmbH & Co. KG | Tauchschule & Shop - 2 x in Köln
The page title should be shorter than 580 pixels. It is 669 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Wir bieten dir alles rund ums Tauchen in Köln! In unserem Tauchshop in der Kölner City findest du deine passende Tauchausrüstung, in unserer Tauchschule bieten wir Tauchkurse vom Schnuppertauchen bis zur Tauchlehrerausbildung und in unserer Tauchbasis am Fühlinger See erwarten dich zahlreiche Fun Dives & Aktivitäten!
The meta description is too long: 2029 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.bluemarlin-koeln.de/
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 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
viewportinitial-scale=1, minimum-scale=1, maximum-scale=5, viewport-fit=cover
apple-mobile-web-app-capableyes
descriptionWir bieten dir alles rund ums Tauchen in Köln! In unserem Tauchshop in der Kölner City findest du deine passende Tauchausrüstung, in unserer Tauchschule bieten wir Tauchkurse vom Schnuppertauchen bis zur Tauchlehrerausbildung und in unserer Tauchbasis am Fühlinger See erwarten dich zahlreiche Fun Dives & Aktivitäten!
keywordsTauchen, Köln, Tauchschule, Tauchkurse, BlueMarlin, Tauchshop, Tauchausrüstung, Kaufen, Geschäft, Tauchgeschäft, Shop, Aqua Lung, Suunto, Polaris, Atemregler, Tauchschule, Tauchkurse, Open Water Diver, Advanced Open Water Diver, Schnuppertauchen, Fuehlinger See, Fühlinger See, CMAS, PADI, IAC, Indoor, Tauchen, Köln, Globetrotter, Köln, Kurse, Verkauf, Tauchequipment
langde
twitter:cardsummary
twitter:titleTauchsport BlueMarlin GmbH & Co. KG | Tauchschule & Shop - 2 x in Köln
twitter:descriptionWir bieten dir alles rund ums Tauchen in Köln! In unserem Tauchshop in der Kölner City findest du deine passende Tauchausrüstung, in unserer Tauchschule bieten wir Tauchkurse vom Schnuppertauchen bis zur Tauchlehrerausbildung und in unserer Tauchbasis am Fühlinger See erwarten dich zahlreiche Fun Dives & Aktivitäten!
twitter:imagehttps://le-cdn.website-editor.net/s/4d990c3c5489448cb979d1e62cb2443d/dms3rep/multi/opt/BlueMarlin-Logo-1920w.jpg?Expires=1730966298&Signature=bDmHj3BGtVVjLlim1n3kgwaz~78nbHPSe4fnODhyBbB4ztyhP-yhzCY1cxOL0lvZhESZP4TuJ2JxdD3nbibCu3Kowymc4D-iwsxTCNxHVXK2zE5CUVg36pTQz9IJnpS7-N5qW1uVQaxeCMicsR0ruJkKff7k4XhsBNjEtjpDHkaXMuH64XBTCXNrOrhUXp96Rl-Ddm-209LvRLgmt~dypXimzKtuG9qiUNJHajz3naMe2Qsy9zoPVnjaYqvw4BRqlaNUd7CxGxr16thveSN-OaJDwvJJzU0wYmacabqVxSHn6CXlRMEuI8SCzsVHxvQxRr8dzWT5d7utZ~wbtsCmVg__&Key-Pair-Id=K2NXBXLF010TJW
og:typewebsite
og:descriptionWir bieten dir alles rund ums Tauchen in Köln! In unserem Tauchshop in der Kölner City findest du deine passende Tauchausrüstung, in unserer Tauchschule bieten wir Tauchkurse vom Schnuppertauchen bis zur Tauchlehrerausbildung und in unserer Tauchbasis am Fühlinger See erwarten dich zahlreiche Fun Dives & Aktivitäten!
og:titleTauchsport BlueMarlin GmbH & Co. KG | Tauchschule & Shop - 2 x in Köln
og:imagehttps://le-cdn.website-editor.net/s/4d990c3c5489448cb979d1e62cb2443d/dms3rep/multi/opt/BlueMarlin-Logo-1920w.jpg?Expires=1730966298&Signature=bDmHj3BGtVVjLlim1n3kgwaz~78nbHPSe4fnODhyBbB4ztyhP-yhzCY1cxOL0lvZhESZP4TuJ2JxdD3nbibCu3Kowymc4D-iwsxTCNxHVXK2zE5CUVg36pTQz9IJnpS7-N5qW1uVQaxeCMicsR0ruJkKff7k4XhsBNjEtjpDHkaXMuH64XBTCXNrOrhUXp96Rl-Ddm-209LvRLgmt~dypXimzKtuG9qiUNJHajz3naMe2Qsy9zoPVnjaYqvw4BRqlaNUd7CxGxr16thveSN-OaJDwvJJzU0wYmacabqVxSHn6CXlRMEuI8SCzsVHxvQxRr8dzWT5d7utZ~wbtsCmVg__&Key-Pair-Id=K2NXBXLF010TJW
Content-typetext/html;charset=UTF-8
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 1026 words. That's ok.
32.6% 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 12.75 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 "initial-scale=1, minimum-scale=1, maximum-scale=5, viewport-fit=cover" is provided.
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: bluemarlin
Image SEO
(Somewhat important)
13 images have no alt attribute. The content of alt attributes is used by search engines.
Social Networks
(Nice to have)
This page is optimized perfectly for social networks.
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
...1AgsEgW1n2w__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...2GiFZXlJCwA__&Key-Pair-Id=K2NXBXLF010TJWBlueMarlin STORE (City / Südstadt)BlueMarlin STORE (City / Südstadt)
...MybklZ~qHIg__&Key-Pair-Id=K2NXBXLF010TJWBlueMarlin TauchbasisBlueMarlin Tauchbasis
...VBMaRqQW78Q__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...gzhd4hGvktg__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...jRtvAH223fw__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...eOa0YDn72iQ__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...and1/dms3rep/multi/opt/117622-1920w.jpegNo alt attribute provided
...~Sjv~9pIYKw__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...hePPtLRE4mQ__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...IOxsd8GrBTA__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...2jDufL-dCqw__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...K9OyhTpiHVA__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...iaDWjBWiL1A__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided
...s24SXZZ8u1A__&Key-Pair-Id=K2NXBXLF010TJWNo alt attribute provided

Page structure

H1 heading
(Critically important)
# Tauchshop # Tauchschule Winterprogramm # Tauchbasis # Fun Dives # Tauchreisen # 2 Standorte in Köln
Too many H1 headings
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 # Tauchshop # Tauchschule Winterprogramm # Tauchbasis # Fun Dives # Tauchreisen # 2 Standorte in Köln
H1 BlueMarlin. Unter Wasser zu Hause.
H2 Alles rund ums Tauchen in Köln
H2 Unsere Zentrale - BlueMarlin STORE
H2 TAUCHKURSE
H3 INDOOR DIVER / OPEN WATER DIVER KURS, ab 429 Euro
H3 SCHNUPPERTAUCHEN, 89 Euro
H3 TROCKI-WOCHEN im BlueMarlin Store
H3 Aktuelle Impressionen aus dem Fühlinger See
H3 WINTERPROGRAMM 2024/2025
H3 Indoor Diver / Open Water Diver Winterprogramm 2024/2025 - Auch im Winter unter Wasser!
H3 AOWD Kurse - auch im Winter unter Wasser!
H3 INDOORTAUCHEN im Winter in Deutschlands größtem Indoortauchzentrum
H3 BlueMarlin Nachttauch-Events am 30.08.2024, 13.09.2024, 27.09.2024
H3 Tauchkurse
H3 Tauchbasis
H3 Tauchreisen
H3 Sporttauchen/Tauchkurse
H3 BlueMarlin STORE (City/Südstadt)
H3 BlueMarlin Fühlinger See
H5 Erfahrung seit über 15 Jahren | Optimale Infrastruktur mit 2 Standorten in Köln
H5 In unserem Hauptsitz am Bonner Wall findest du neben einem riesigen Tauch- & Schnorchelsortiment, Werkstatt, Füllstation alles zum Thema Tauchschule, Tauchbasis am Fühlinger See und unseren Tauchre...
H5 Wir bieten dir eine optimale Infrastruktur für deine professionelle Tauchausbildung in Köln. Unsere Tauchkurse finden nach den international anerkannten Standards der Verbände i.a.c., SSI und CMAS ...
Some anchor texts are used more than once.
19 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 6 external links on this page.

Found links on this page

LinkAttributesAnchor text
/tauchshopBlueMarlin Store Köln City
/tauchbasis-fuehlinger-seeFiliale FühSe
/kontaktÖffnungszeiten
/blogNews
https://www.bluemarlin-koeln.de/No Text
/tauchshopTauchshop
/tauchshopText duplicate Tauchshop
https://www.bluemarlin-onlines...New window External Subdomain Onlineshop
/gutscheineGutscheine
/bluemarlindivestyleSubdomain Anchor Shirts & more
/tauchkurseTauchkurse
/tauchkurseText duplicate Tauchkurse
/tauchkurseSpezialkurse
/tauchkurseDive Pro-Ausbildung
/tauchkurseFreediving
/tauchkurseTechnisches Tauchen
/gutscheineText duplicate Gutscheine
/kursanmeldungKursanmeldung
/tauchbasis-fuehlinger-seeTauchbasis
/tauchbasis-fuehlinger-seeText duplicate Tauchbasis
/taucheninkoelnFun Dives & Events
/dein-tauchclub-in-koelnTauchclub
/blackfoot-beach-angeboteErlebnis Angebote
/anmelde-centerAnmelde-Center
/sichtweiten-fuehlinger-seeSichtweiten
/taucherlebnisseTaucherlebnisse
/taucheninkoelnText duplicate Fun Dives & Events
/tauchreisenReisen & Ausflüge
/blackfoot-beach-angeboteText duplicate Erlebnis Angebote
/dein-tauchclub-in-koelnText duplicate Tauchclub
/kontaktKontakt
/kontaktText duplicate Kontakt
/blogNews & Aktuelles
/das-bluemarlin-teamDas BlueMarlin-Team
/tauchshopIMG-ALT BlueMarlin STORE (City / Südstadt)
/tauchbasis-fuehlinger-seeIMG-ALT BlueMarlin Tauchbasis
/tauchshopText duplicate Tauchshop
/tauchkurseTauchschule
/bluemarlin-winterprogrammWinterprogramm
/tauchbasis-fuehlinger-see# Tauchbasis
/taucheninkoeln# Fun Dives
/tauchreisenTauchreisen
/kontakt2 Standorte in Köln
/blogText duplicate News & Aktuelles
/open-water-diver---einsteiger...Kurse buchen
/schnuppertauchenJETZT BUCHEN
/trocki-wochen-im-bluemarlin-s...Text duplicate Öffnungszeiten
/aktuelle-impressionen-aus-dem...No Text
/aktuelle-impressionen-aus-dem...Aktuelle Impressionen aus dem Fühlinger See
/aktuelle-impressionen-aus-dem...No Text
/winterprogramm-2024-2025No Text
/winterprogramm-2024-2025WINTERPROGRAMM 2024/2025
/winterprogramm-2024-2025No Text
/open-water-diver-winterprogra...No Text
/open-water-diver-winterprogra...Indoor Diver / Open Water Diver Winterprogramm 2024/2025 - Auch im Winter unter Wasser!
/open-water-diver-winterprogra...No Text
/aowd-kurse-auch-im-winter-unt...No Text
/aowd-kurse-auch-im-winter-unt...AOWD Kurse - auch im Winter unter Wasser!
/aowd-kurse-auch-im-winter-unt...No Text
/indoortauchen-im-winter-in-de...No Text
/indoortauchen-im-winter-in-de...INDOORTAUCHEN im Winter in Deutschlands größtem Indoortauchzentrum
/indoortauchen-im-winter-in-de...No Text
/das-grosse-bluemarlin-nachtta...No Text
/das-grosse-bluemarlin-nachtta...BlueMarlin Nachttauch-Events am 30.08.2024, 13.09.2024, 27.09.2024
/das-grosse-bluemarlin-nachtta...No Text
/tauchkurseNo Text
/tauchkurseText duplicate Tauchkurse
/tauchkurseMehr erfahren
/tauchbasis-fuehlinger-seeNo Text
/tauchbasis-fuehlinger-seeText duplicate Tauchbasis
/tauchbasis-fuehlinger-seeText duplicate Mehr erfahren
/tauchreisenNo Text
/tauchreisenText duplicate Tauchreisen
/tauchreisenText duplicate Mehr erfahren
/tauchkurseNo Text
/tauchkurseTAUCHKURSE
/tauchkurseNo Text
/tauchkurseTAUCHLEHRER KURSE
/tauchkurseNo Text
/tauchkurseFREEDIVING KURSE
/tauchkurseNo Text
/tauchkurseTECHNISCHES TAUCHEN
/anmelde-centerJetzt online anmelden
/kontaktKontakt/Öffnungszeiten
/taucheninkoelnNew window Die nächsten Tauchgänge
/kursanmeldungAnmeldung Kurse & Touren
/jobsKarriere & Jobs
/webcheckinAnmeldung Fühlinger See
/tauchtauglichkeitNew window Gesundheitsinfo Tauchen
http://www.bluemarlin-onlinesh...New window External Subdomain www.bluemarlin-onlineshop.de
/kontaktKontakt & Öffnungszeiten
/impressumImpressum & Datenschutz
/tauchshopBlueMarlin STORE (City/Südstadt)
/tauchbasis-fuehlinger-seeBlueMarlin Fühlinger See
https://www.facebook.com/Tauch...External Subdomain No Text
https://www.instagram.com/blue...New window External Subdomain No Text
https://de-de.facebook.com/Tau...New window External Subdomain No Text
https://www.youtube.com/user/B...New window External Subdomain No Text

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.bluemarlin-koeln.de/"
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 0.27 seconds.
The file size of the HTML document is fine (128 kB).

HTTP Response Header

NameValue
content-typetext/html;charset=utf-8
dateThu, 10 Oct 2024 08:28:14 GMT
servernginx
cache-controlno-cache, no-store, must-revalidate
expiresThu, 01 Jan 1970 00:00:00 GMT
x-content-type-optionsnosniff
content-security-policyframe-ancestors https://*.ionos.com https://*.ionos.at https://*.ionos.co.uk https://*.ionos.de https://*.ionos.es https://*.ionos.fr https://*.ionos.it https://*.ionos.ca https://*.ionos.mx https://*.ionos.us https://*.website-editor.net https://*.mywebsite-editor.com www.bluemarlin-koeln.de
varyuser-agent,accept-encoding
speculation-rules"https://static-cdn.website-editor.net/speculations/rules/prerender-1.0.3.json"
content-encodinggzip
d-geoEU
statuscode200
http_versionHTTP/2

External factors

This page is very well linked from other websites.
This page has backlinks from 27 referring domains.
This page has 102 backlinks.
This page has backlinks from 26 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

# Sitemap is also available on /sitemap.xml
Sitemap: https://www.bluemarlin-koeln.de/sitemap.xml
User-agent: *

Similar sites

Search preview

www.bluemarlin-koeln.de
Tauchsport BlueMarlin GmbH & Co. KG | Tauchschule & Shop - ...
Wir bieten dir alles rund ums Tauchen in Köln! In unserem Tauchshop in der Kölner City findest du deine passende Tauchausrüstung, in unserer Tauchschule bieten wir Tauchkurse vom Schnuppertauchen bis zur Tauchlehrerausbildung und in unserer Tauchbasis am Fühlinger See erwarten dich zahlreiche Fun Dives & Aktivitäten!

Most important keywords

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

KeywordResultRecheck
Köln90%Check
BlueMarlin Köln82%Check
Tauchschule78%Check
BlueMarlin76%Check
Tauchschule BlueMarlin76%Check
Tauchbasis72%Check
Tauchen Köln72%Check
Tauchschule Shop72%Check
Tauchschule Tauchkurse68%Check
Tauchsport BlueMarlin65%Check
Show more keywords and terms

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