Spektrum.de - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
81% 
Page structure
70% 
Link structure
6% 
Server
43% 
External factors
100% 
SEO Score
Response time
0.44 s
File size
63.30 kB
Words
481
Media files
2
Number of links
214 internal / 40 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Kontakt - Spektrum der Wissenschaft
The length of the page title is perfect. (331 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Kontaktmöglichkeiten zur Spektrum der Wissenschaft Verlagsgesellschaft mbH
The length of the meta description is perfect. (486 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.spektrum.de/info/kontakt/
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
viewportwidth=device-width, initial-scale=1.0
msapplication-config/js_css/assets/favicon/browserconfig.xml
theme-color#ffffff
descriptionKontaktmöglichkeiten zur Spektrum der Wissenschaft Verlagsgesellschaft mbH
apple-itunes-appapp-id=940607128
google-play-appapp-id=com.spektrum.digital
robotsmax-snippet:-1,max-image-preview:large,max-video-preview:-1
referrerno-referrer-when-downgrade
article:publisherhttps://www.facebook.com/spektrumverlag/
article:authorhttps://www.facebook.com/spektrumverlag/
article:opinionfalse
article:content_tierfree
article:locationregion:de
langde
twitter:cardsummary_large_image
twitter:site@spektrum
fb:pages340704949293332,140340072656965,640411729326413,185384864832651,418231634995324,159053464109265,617256435023684,158772637491795,227433449943,167370110015526,189613381060374,808526069200219,403789883164848,739491659417853,214302245262045,268970676476837,1440913715926131,206472009399335,322104427933027,264350000242348,521518021366835,149926958378505,556674487680260,210945102276037,1450678515186976,420346491396926,211527652194844,137873992951102,296085357091610,272200206153510,278122429054474,537762122967518,169740236398835,241536839295156,361266620551515,186259904826177,343495375786161,464970480253851,1835130316712058,255392254491101,59229643843,134264763255117,353906937962338,324507584265820,1616880788555043,359094474185606,179746130923,382271481790481,125653160915333,340231852789266,200663820094027,660950443946696,703548003083054,430487377070718,153214561500985,261590993930663,690179837715422,313604608769726,252059868144977,303600416564,1978686922357241,754290388009184,1695685417377428,141460296047680,1560268694235873,143052449115733,191368714208840,215391791833780,122038624495702,324950845227,279731145555458,178687228838125,279423218736055,108460652597959,297104280305754,1464779663812914,413735895355931,115513551794556,1479794728957963,551895718182215,436943589677766,117178721653018,6115848166,371508716609,139267936143724,489649457891992,1658850487715102,133045436728938,181867441876675,188063708192333,193691346949,811742145521092,302413256596750,1794201270838679,143076299093134,207128599761096,328116510545096,257666187618430,339988046967,125437194177329,520639961303602,22297920245,296961807034035,113695686489,121519257912174,171560986231651,1654070881530530,341168879741,143932312346551,199235833463190,145327659223282,304238573037854,346209515556394,99912541035,108064145914608,370429855420,170400356321916,273358886101252,370987992963178,1565916643629423,424373190938938,152586274808123,152749531404582,274648772592090,168287986591458,284820978207661,121336764582486,174395066291972,124330454291947,58364190265,114336798618606,177450032338982,460115770673632,526326927441845,401070179903991,35223474166,2055004118104491,227993570999679,121053321387843,146393288729580,37816894428
og:titleInfo: Kontakt
og:typearticle
og:descriptionKontaktmöglichkeiten zur Spektrum der Wissenschaft Verlagsgesellschaft mbH
og:urlhttps://www.spektrum.de/info/kontakt/
og:imagehttps://static.spektrum.de/fm/912/f1920x1080/iStock-1219594479_Stephen_Barnes.jpg
x-ua-compatibleie=edge
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 481 words on this page. Good pages should have about 800 words of useful content.
21% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
5 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 9.83 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)
The usage of strong and bold tags is perfect. We recommend the use of up to 10 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
...857/iStock-1219594479_Stephen_Barnes.jpgEine Klingel an einer Rezeption mit der Aufschrift »Service«Eine Klingel an einer Rezeption mit der Aufschrift »Service«

Page structure

H1 heading
(Critically important)
Kontakt
The H1 heading consists of only one word. There should be more information given.
The H1 heading is too short (7 characters). It should be at least 20 Characters long.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 Kontakt
H2 Fachgebiete
H2 Services
H2 Info: Kontakt
H3 Schreiben Sie uns!
H3 Themenkanäle
H3 Wunderwelt der Pflanzen
H3 Fotosynthese
H3 Unsere Ernährung
H3 Für Sie im Spektrum-Shop und am Kiosk:
H3 Spektrum.de-Newsletter abonnieren
H4 Services Duplicate text
H4 Info
H4 Weitere Angebote
H4 Webseiten
Some internal link anchor texts are too long.
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
32 links don't have an anchor text.
The number of internal links is ok.
There are too many external links (40) on this page.

Found links on this page

LinkAttributesAnchor text
/info/kontakt/Anchor Direkt zum Inhalt
A-TITLE Direkt zum Inhalt
https://www.spektrum.de/suche/A-TITLE Suche
https://www.spektrum.de/No Text
/magazin/spektrum-der-wissensc...Spektrum der Wissenschaft
/die-woche/Spektrum - Die Woche
/shop/spektrum-psychologie/abo/Spektrum Psychologie
/shop/spektrum-geschichte/abo/Spektrum Geschichte
/shop/spektrum-gesundheit/abo/Spektrum Gesundheit
/magazin/gehirn-und-geist/Gehirn&Geist
/magazin/sterne-und-weltraum/Sterne und Weltraum
/shop/spektrum-kompakt/Spektrum Kompakt
/shop/spektrum-der-wissenschaf...Text duplicate Spektrum der Wissenschaft
/shop/spektrum-die-woche/archiv/Subdomain Text duplicate Spektrum - Die Woche
/shop/gehirn-und-geist/archiv/Subdomain Text duplicate Gehirn&Geist
/shop/sterne-und-weltraum/archiv/Text duplicate Sterne und Weltraum
/shop/spektrum-kompakt/Text duplicate Spektrum Kompakt
/shop/spektrum-psychologie/arc...Text duplicate Spektrum Psychologie
/shop/spektrum-geschichte/archiv/Text duplicate Spektrum Geschichte
/shop/spektrum-gesundheit/archiv/Text duplicate Spektrum Gesundheit
/shop/spektrum-spezial/biologi...Spezial Biologie/Medizin/Hirnforschung
/shop/spektrum-spezial/physik-...Spezial Physik/Mathematik/Technik
https://www.spektrum.de/shop/Spektrum Shop
https://ocs.spektrum.de/External Subdomain Mein Konto
https://ocs.spektrum.de/External Subdomain Meine Downloads
https://www.spektrum.de/live/Spektrum Live
/aktion/abovorteileAboVorteile
/newsletter/Newsletter
https://www.spektrum.de/lexikon/Lexika
https://ocs.spektrum.de/faqExternal Subdomain FAQ
/info/presse/Subdomain Presse
/alias/info/angebote-fuer-schu...Angebote für Schulen
/info/kontakt/Wo kaufen?
/info/kontakt/Kontakt
/info/mediadaten/Mediadaten
https://www.spektrum.de/news/Heute aktuell
/index/entdecken-sie-die-belie...Meistgelesen
/index/neuerscheinungen/1533949Neuerscheinungen
/astronomieAstronomie
/news/astronomie/News
/thema/astronomie/Themen
/wissen/astronomie/Wissen
/kolumne/astronomie/Kolumnen
/podcast/astronomie/Podcasts
https://scilogs.spektrum.de/ne...External Subdomain SciLogs
/video/astronomie/Videos
/bilder/astronomie/Bilder
/rezension/astronomie/Rezensionen
/quiz/astronomie/Quiz
/leserbilder/astronomie/Leserbilder
/szenenews/astronomie/Szenenews
/shop/fachgebiet/astronomie/Produkte
https://www.spektrum.de/biologieBiologie
/news/biologie/Text duplicate News
/thema/biologie/Text duplicate Themen
/wissen/biologie/Text duplicate Wissen
/studium-beruf/biologie/Studium & Beruf
/kolumne/biologie/Text duplicate Kolumnen
/podcast/biologie/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/biologie/Text duplicate Bilder
/rezension/biologie/Text duplicate Rezensionen
/quiz/biologie/Text duplicate Quiz
/video/biologie/Video
/shop/fachgebiet/biologie/Text duplicate Produkte
https://www.spektrum.de/chemieChemie
/news/chemie/Text duplicate News
/thema/chemie/Text duplicate Themen
/wissen/chemie/Text duplicate Wissen
/kolumne/chemie/Text duplicate Kolumnen
/podcast/chemie/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/chemie/Text duplicate Bilder
/rezension/chemie/Text duplicate Rezensionen
/quiz/chemie/Text duplicate Quiz
/video/chemie/Text duplicate Video
/shop/fachgebiet/chemie/Text duplicate Produkte
/erde-umweltErde/Umwelt
/news/erde-umwelt/Text duplicate News
/thema/erde-umwelt/Text duplicate Themen
/wissen/erde-umwelt/Text duplicate Wissen
/kolumne/erde-umwelt/Text duplicate Kolumnen
/podcast/erde-umwelt/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/erde-umwelt/Text duplicate Bilder
/rezension/erde-umwelt/Text duplicate Rezensionen
/quiz/erde-umwelt/Text duplicate Quiz
/shop/fachgebiet/erde-umwelt/Text duplicate Produkte
/video/erde-umwelt/Text duplicate Video
https://www.spektrum.de/technikIT/Tech
/news/technik/Text duplicate News
/thema/technik/Text duplicate Themen
/wissen/technik/Text duplicate Wissen
/kolumne/technik/Text duplicate Kolumnen
/podcast/technik/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/technik/Text duplicate Bilder
/rezension/technik/Text duplicate Rezensionen
/quiz/technik/Text duplicate Quiz
/video/technik/Text duplicate Video
/shop/fachgebiet/technik/Text duplicate Produkte
https://www.spektrum.de/kulturKultur
/news/kultur/Text duplicate News
/thema/kultur/Text duplicate Themen
/wissen/kultur/Text duplicate Wissen
/kolumne/kultur/Text duplicate Kolumnen
/podcast/kultur/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/kultur/Text duplicate Bilder
/rezension/kultur/Text duplicate Rezensionen
/quiz/kultur/Text duplicate Quiz
/video/kultur/Text duplicate Video
/shop/fachgebiet/kultur/Text duplicate Produkte
/mathematikMathematik
/news/mathematik/Text duplicate News
/thema/mathematik/Text duplicate Themen
/wissen/mathematik/Text duplicate Wissen
/kolumne/mathematik/Text duplicate Kolumnen
/podcast/mathematik/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/mathematik/Text duplicate Bilder
/rezension/mathematik/Text duplicate Rezensionen
/quiz/mathematik/Text duplicate Quiz
/video/mathematik/Text duplicate Video
/shop/fachgebiet/mathematik/Text duplicate Produkte
https://www.spektrum.de/medizinMedizin
/news/medizin/Text duplicate News
/thema/medizin/Text duplicate Themen
/wissen/medizin/Text duplicate Wissen
/kolumne/medizin/Text duplicate Kolumnen
/podcast/medizin/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/medizin/Text duplicate Bilder
/rezension/medizin/Text duplicate Rezensionen
/quiz/medizin/Text duplicate Quiz
/video/medizin/Text duplicate Video
/shop/fachgebiet/medizin/Text duplicate Produkte
https://www.spektrum.de/physikPhysik
/news/physik/Text duplicate News
/thema/physik/Text duplicate Themen
/wissen/physik/Text duplicate Wissen
/kolumne/physik/Text duplicate Kolumnen
/podcast/physik/Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/physik/Text duplicate Bilder
/rezension/physik/Text duplicate Rezensionen
/quiz/physik/Text duplicate Quiz
/video/physik/Text duplicate Video
/shop/fachgebiet/physik/Text duplicate Produkte
/psychologie-hirnforschungPsychologie/Hirnforschung
/news/psychologie-hirnforschung/Text duplicate News
/thema/psychologie-hirnforschung/Text duplicate Themen
/wissen/psychologie-hirnforsch...Text duplicate Wissen
/kolumne/psychologie-hirnforsc...Text duplicate Kolumnen
/podcast/psychologie-hirnforsc...Text duplicate Podcasts
https://scilogs.spektrum.de/ne...External Subdomain Text duplicate SciLogs
/bilder/psychologie-hirnforsch...Text duplicate Bilder
/rezension/psychologie-hirnfor...Text duplicate Rezensionen
/quiz/psychologie-hirnforschung/Text duplicate Quiz
/video/psychologie-hirnforschung/Text duplicate Video
/shop/fachgebiet/psychologie/Text duplicate Produkte
https://www.spektrum.de/suche/Text duplicate Suche
https://www.spektrum.de/shop/Abo/Shop
https://www.spektrum.de/lexikon/Text duplicate Lexika
https://www.spektrum.de/live/Text duplicate Spektrum Live
https://www.spektrum.de/plus/Spektrum Plus
/newsletter/Text duplicate Newsletter
/info/kontakt/Subdomain Text duplicate Kontakt
https://www.spektrum.de/Startseite
https://www.facebook.com/share...New window External Subdomain A-TITLE Bei Facebook teilen
https://bsky.app/intent/compos...New window External A-TITLE Bei Bluesky teilen
https://www.threads.net/intent...New window External Subdomain A-TITLE Bei Threads teilen
https://twitter.com/intent/twe...New window External A-TITLE Bei Twitter teilen
https://www.xing.com/social_pl...New window External Subdomain A-TITLE Bei XING teilen
https://www.linkedin.com/share...New window External Subdomain A-TITLE Bei LinkedIn teilen
https://share.flipboard.com/bo...New window External Subdomain A-TITLE Bei Flipboard teilen
https://getpocket.com/save?url...New window External A-TITLE In Pocket speichern
https://www.facebook.com/share...New window External Subdomain Text duplicate A-TITLE Bei Facebook teilen
https://bsky.app/intent/compos...New window External Text duplicate A-TITLE Bei Bluesky teilen
https://www.threads.net/intent...New window External Subdomain Text duplicate A-TITLE Bei Threads teilen
https://twitter.com/intent/twe...New window External Text duplicate A-TITLE Bei Twitter teilen
https://www.xing.com/social_pl...New window External Subdomain Text duplicate A-TITLE Bei XING teilen
https://www.linkedin.com/share...New window External Subdomain Text duplicate A-TITLE Bei LinkedIn teilen
https://share.flipboard.com/bo...New window External Subdomain Text duplicate A-TITLE Bei Flipboard teilen
https://getpocket.com/save?url...New window External Text duplicate A-TITLE In Pocket speichern
/pdf/die-kraft-der-atmung-spek...No Text
/pdf/invasive-arten-spektrum-k...No Text
/pdf/die-andere-seite-unserer-...No Text
/pdf/primaten-spektrum-kompakt...No Text
/pdf/ist-der-microsoft-durchbr...No Text
/inhaltsverzeichnis/neue-geset...No Text
/inhaltsverzeichnis/psychotain...No Text
/inhaltsverzeichnis/die-sonne-...No Text
/inhaltsverzeichnis/quantengra...No Text
/inhaltsverzeichnis/faszienier...No Text
/shop/bundle/digitalpaket-ster...No Text
/inhaltsverzeichnis/psychotain...No Text
/inhaltsverzeichnis/quantengra...No Text
/pdf/der-weltkonzern-der-laend...No Text
/inhaltsverzeichnis/die-sonne-...No Text
/pdf/die-macht-des-mikrobioms-...No Text
/shop/bundle/digitalpaket-spek...No Text
/pdf/invasive-arten-spektrum-k...No Text
/pdf/zucker-so-wirkt-er-auf-ps...No Text
/shop/bundle/digitalpaket-mikr...No Text
/shop/bundle/digitalpaket-tier...No Text
/shop/bundle/digitalpaket-biol...No Text
/shop/bundle/digitalpaket-prim...No Text
/shop/bundle/digitalpaket-die-...No Text
/shop/bundle/digitalpaket-sonn...No Text
https://www.spektrum.de/thema/Themenkanäle
/thema/wunderwelt-der-pflanzen...Wunderwelt der Pflanzen Auch die unscheinbarsten Pflänzchen halten unentdeckte Geheimnisse bereit. Kein Wunder - bei geschätzt einer halben Million Arten wel...
/thema/fotosynthese/1302859Fotosynthese Die Natur macht vor, wie die Kraft der Sonne angezapft wird und speichert Licht als chemische Reaktionsenergie. Was Pflanzen können, lernen Inge...
/thema/unsere-ernaehrung/1211073Unsere Ernährung Ausgewogen, gesund, nährstoffreich – das soll die richtige Ernährung sein. Doch wie geht das? Was ist zu beachten? Und warum ist die Darmflo...
/info/kontakt/Anchor Nach oben
/inhaltsverzeichnis/neue-geset...No Text
/pdf/invasive-arten-spektrum-k...No Text
/inhaltsverzeichnis/die-sonne-...No Text
/pdf/die-andere-seite-unserer-...No Text
/inhaltsverzeichnis/psychotain...No Text
/index/neuerscheinungen/1533949Weitere Neuerscheinungen
https://www.spektrum.de/shopText duplicate Spektrum Shop
/newsletter/Spektrum.de-Newsletter abonnieren Jetzt anmelden!
/datenschutz/New window Datenschutzerklärung
/newsletter/Text duplicate Newsletter
/info/kontakt/Text duplicate Kontakt
https://www.spektrum.de/shop/Text duplicate Spektrum Shop
/info/kontakt/Im Handel kaufen
/info/presse/Text duplicate Presse
/info/kontakt/?activity=KF_KUE...Verträge kündigen
/info/mediadaten/Text duplicate Mediadaten
/datenschutz/Datenschutz
/alias/info/allgemeine-nutzung...Nutzungsbedingungen
/alias/service/utiq-verwalten/...Utiq verwalten
https://www.iqdigital.de/news/...External Subdomain Nutzungsbasierte Onlinewerbung
/artikel-archiv/Alle Artikel
/impressum/Impressum
/alias/info/angebote-fuer-schu...Text duplicate Angebote für Schulen
/alias/angebote-fuer-firmen-in...Angebote für Institutionen
/angebote/gymglish/1604104Sprachen lernen mit Gymglish
https://www.spektrum.de/lexikon/Text duplicate Lexika
/alias/autor-oder-autorin-werd...Für Spektrum schreiben
/alias/barrierefreiheit/zugaen...Zugänglichkeitserklärung
/angebote/wissenschaftskommuni...KielSCN
http://www.wissenschaft-schule...External Subdomain Wissenschaft in die Schulen
https://scilogs.spektrum.de/External Subdomain Text duplicate SciLogs
https://www.academia-net.org/External Subdomain AcademiaNet
https://www.facebook.com/spekt...External Subdomain No Text
https://bsky.app/profile/spekt...External No Text
https://www.instagram.com/spek...External Subdomain No Text
https://www.youtube.com/spektr...External Subdomain No Text
https://flipboard.com/@Spektru...External No Text
/alias/rss/spektrum-de-rss-fee...Subdomain No Text
https://itunes.apple.com/de/ap...External Subdomain No Text
https://play.google.com/store/...External Subdomain No Text

Server configuration

HTTP redirects
(Critically important)
The checked page does not redirect to another URL.
HTTP header
(Important)
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
Performance
(Somewhat important)
The page response time of 0.44 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
A Content Delivery Network like Google Hosted Libraries can save bandwidth for the JQuery files.
The file size of the HTML document is fine (63 kB).

HTTP Response Header

NameValue
expiresMon, 14 Jul 2003 04:00:00 GMT
cache-controlno-store, no-cache, must-revalidate, post-check=0, pre-check=0
serverApache
last-modifiedWed, 12 Mar 2025 20:39:53 GMT
via1.1 varnish, 1.1 varnish
pragmano-cache
accept-rangesbytes
content-typetext/html; charset=utf-8
dateWed, 12 Mar 2025 20:39:53 GMT
x-served-bycache-fra-etou8220045-FRA, cache-fra-etou8220132-FRA
x-cacheMISS, MISS
x-cache-hits0, 0
x-timerS1741811993.112768,VS0,VE419
varyAccept-Encoding
strict-transport-securitymax-age=31557600
statuscode200
http_versionHTTP/2

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 175 referring domains.
This page has 387 backlinks.
This page has backlinks from 116 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: MS Search 4.0 Robot
Disallow: /

User-agent: MJ12bot
Disallow: /

User-agent: GPTBot
Disallow: /

User-agent: *
Disallow: /icons/
Disallow: /template/warenkorb

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www.spektrum.de › info › kontakt
Kontakt - Spektrum der Wissenschaft
Kontaktmöglichkeiten zur Spektrum der Wissenschaft Verlagsgesellschaft mbH

Most important keywords

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

KeywordResultRecheck
Kontakt83%Check
Spektrum78%Check
Spektrum der Wissenschaft71%Check
Wissenschaft62%Check
Wissenschaft Verlagsgesellschaft mbH55%Check
Verlagsgesellschaft51%Check
mbH51%Check
Verlagsgesellschaft mbH51%Check
Info48%Check
Service46%Check
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