Planetarium.berlin - SEO Checker

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Overview of the SEO Check
Meta information
80% 
Page quality
95% 
Page structure
58% 
Link structure
81% 
Server
45% 
External factors
100% 
SEO Score
Response time
0.04 s
File size
124.20 kB
Words
650
Media files
30
Number of links
78 internal / 16 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Stiftung Planetarium Berlin
The length of the page title is perfect. (239 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Die Stiftung Planetarium Berlin wurde zum 1. Juli 2016 als rechtsfähige Stiftung des öffentlichen Rechts errichtet und vereint erstmals in der Geschichte der Stadt die astronomischen Einrichtungen Berlins.
The meta description is too long: 1256 pixels from max. 1000 pixels. Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.planetarium.berlin/
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
descriptionDie Stiftung Planetarium Berlin wurde zum 1. Juli 2016 als rechtsfähige Stiftung des öffentlichen Rechts errichtet und vereint erstmals in der Geschichte der Stadt die astronomischen Einrichtungen Berlins.
GeneratorDrupal 10 (https://www.drupal.org)
MobileOptimizedwidth
HandheldFriendlytrue
viewportwidth=device-width, initial-scale=1.0
langde
charsetutf-8

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Page quality

Content
(Critically important)
This page contains 650 words. That's ok.
27.5% of the text are stop words.
The page contains a listing, which indicates a good text layout.
6 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 19 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, initial-scale=1.0" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 13 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
/themes/spb/logo.svgStiftung Planetarium Berlin Logo
/themes/spb/logo.svgStiftung Planetarium Berlin Logo
...festPankow_2496×1266px.jpg?itok=9wB8UxEfZeiss-Großplanetarium | Aussenansicht, Copyright: SPB, Foto: Natalie Toczek
..._Header_2496x1266px_RZ.jpg?itok=fKNFZFm6Keyvisual Kosmisches Sommerfest Einstein-Edition copyright SPB
...er-Copyright-IdaFiskaa.jpg?itok=kdoyXlbxPorträt Moyka © Ida Fiskaa
...ay-JohnFowler-Unsplash.jpg?itok=xKWXW2JIBrauner Berg unter dem Sternenhimmel © John Fowler (@wildhoney) via unsplash
...tronomieAktuell-Header.png?itok=dCt87ZegAstronomie Aktuell mit Tim Florian Horn | Orionnebel © ESO/H. Drass et al.
...r_alle_Farben_MAR24_RZ.jpg?itok=t0YsvHCjmusical spheres Key Visual © SPB, Design: Ta-Trung, Berlin
...pyright_Navina Neuschl.jpg?itok=LycTtH0UStegreif Konzert © Navina Neuschl
...nnensystem_2496×1266px.jpg?itok=6B8R-_TxVisualisierung aus dem Programm © NSC Creative
...acht-Sternwarte-Header.jpg?itok=XfdGo71EArchenhold-Sternwarte im Sonnenuntergang © SPB / Foto: O. Kwok
...024-06/Matariki_Header.jpg?itok=1kaScmN8Die Plejaden. © Starhopper
...atalieToczek_690x690px.jpg?itok=vXqAMPy0Planetarium
...1/Kategorie_Sternwarte.jpg?itok=L3YIMWy5Sternwarte
...fenJunghanss_690x690px.jpg?itok=DkPlx9EoHighlights & Konzerte
...atalieToczek_690x690px.jpg?itok=NOv_5zoFHörspiele & Lesungen
...SuedVerlag_1248x633px.jpeg?itok=t2vaG4iOKinder & Familie
...-c-SPB_Foto-CaroKadatz.jpg?itok=dqXHkm_DKita & Schule
...rtainmentInc_690x690px.jpg?itok=s_P-oWsrKino
..._SPB-FMArndt_690x690px.jpg?itok=iyaXFlH0Musikprogramme
...PedroBecerra_690x690px.jpg?itok=YnJ-MciJVorträge
...atalieToczek_690x690px.jpg?itok=6ZVHnefCWissenschaftstheater
...PedroBecerra_690x690px.jpg?itok=3ZRdeOffWorkshops & Kurse
...tbareWelten_Vorschau_8.jpg?itok=UKPMX_omKey Visual »Unsichtbare Welten: Vom Mikrokosmos zum Universum« © Foto: Adobe Stock | Design: Ta-Trung, BerlinKey Visual »Unsichtbare Welten: Vom Mikrokosmos zum Universum« © Foto: Adobe Stock | Design: Ta-Trung, Berlin
...onPickford_quadratisch.jpg?itok=t5ggq12tAufnahme einer partiellen Sonnenfinsternis. © Cameron PickfordAufnahme einer partiellen Sonnenfinsternis. © Cameron Pickford
...n2_NatalieToczek_Kreis.png?itok=FE74Zq5dZeiss-GroßplanetariumZeiss-Großplanetarium
...Sternwarte-Arndt_Kreis.png?itok=RuOnFKUzArchenhold-SternwarteArchenhold-Sternwarte
...toVolkerGehrmann_Kreis.png?itok=xOnIIKJNWilhelm-Foerster-SternwarteWilhelm-Foerster-Sternwarte
...toVolkerGehrmann_Kreis.png?itok=XcZPeM_yPlanetarium am InsulanerPlanetarium am Insulaner
...ublic/2018-08/Stiftung.png?itok=18GUD_yhStiftungsgrafik © yellow tooStiftungsgrafik © yellow too

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.
There are 38 headings on the page. The amount of headings should be in a more proper relation to the amount of text.

Heading structure

Heading levelContent
H2 Main navigation
H2 Service Menu
H2 Service Menu Duplicate text
H2 Kinderfest Pankow
H2 Kosmisches Sommerfest: Einstein-Edition
H2 Live Radiant: Moyka
H2 Per Anhalter durch die Galaxis
H2 Astronomie Aktuell
H2 musical spheres
H2 explore_händel im Planetarium
H2 Die große Abenteuerreise durchs Sonnensystem
H2 Nacht auf der Sternwarte
H2 Matariki – The Sky above New Zealand
H2 Veranstaltungen
H2 Neuigkeiten und Blog
H2 Kommt zu unseren Thementagen »Unsichtbare Welten: Vom Mikrokosmos zum Universum« vom 9. bis 13. April!
H2 Partielle Sonnenfinsternis am 29. März 2025: wir laden euch zu spannenden Live-Events und Highlight-Veranstaltungen an allen drei Standorten ein!
H2 Besucherinformationen
H2 Stiftung Planetarium Berlin
H2 Zeiss-Großplanetarium
H2 Archenhold-Sternwarte
H2 Wilhelm-Foerster-Sternwarte
H2 Planetarium am Insulaner
H3 Planetarium
H3 Sternwarte
H3 Highlights & Konzerte
H3 Hörspiele & Lesungen
H3 Kinder & Familie
H3 Kita & Schule
H3 Kino
H3 Musik
H3 Vorträge
H3 Wissenschaftstheater
H3 Workshops & Kurse
H3 Zeiss-Großplanetarium Duplicate text
H3 Archenhold-Sternwarte Duplicate text
H3 Wilhelm-Foerster-Sternwarte Duplicate text
H3 Planetarium am Insulaner Duplicate text
Some internal link anchor texts are too long.
Some anchor texts are used more than once.
The number of internal links is ok.
All internal links are not using dynamic parameters.
There are 16 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.planetarium.berlin/Anchor Direkt zum Inhalt
https://www.planetarium.berlin/Subdomain IMG-ALT Stiftung Planetarium Berlin Logo
/pressePresse
A-TITLE Presse/Aktuelles
/podcastsPodcasts
A-TITLE Podcasts der Stiftung Planetarium Berlin
/geschenkideenGeschenkideen
/blogBlog
A-TITLE Blog
/newsletterNewsletter
A-TITLE Newsletter
https://www.planetarium.berlin/De
https://www.planetarium.berlin/enEn
https://www.planetarium.berlin/Subdomain Text duplicate IMG-ALT Stiftung Planetarium Berlin Logo
/veranstaltungenVeranstaltungen
A-TITLE Veranstaltungen
/ticketsTermine & Tickets
A-TITLE Termine & Tickets
/besuchBesuch
A-TITLE Besuch
/bildungBildung
A-TITLE Bildung
/ueber-unsÜber uns
A-TITLE Über uns
/mitmachenMitmachen
/presseText duplicate Presse
A-TITLE Presse/Aktuelles
/podcastsText duplicate Podcasts
A-TITLE Podcasts der Stiftung Planetarium Berlin
/geschenkideenText duplicate Geschenkideen
/blogText duplicate Blog
A-TITLE Blog
/newsletterText duplicate Newsletter
A-TITLE Newsletter
https://www.planetarium.berlin/Text duplicate De
https://www.planetarium.berlin/enText duplicate En
/veranstaltungen/kinderfest-pa...Kinderfest Pankow
/veranstaltungen/kinderfest-pa...Text duplicate Kinderfest Pankow
IMG-ALT Zeiss-Großplanetarium | Aussenansicht, Copyright: SPB, Foto: Natalie Toczek
/veranstaltungen/kosmisches-so...Kosmisches Sommerfest: Einstein-Edition
/veranstaltungen/kosmisches-so...Kosmisches Sommerfest: Einstein-Edition In der Archenhold-Sternwarte am 14. Juni 2025
IMG-ALT Keyvisual Kosmisches Sommerfest Einstein-Edition copyright SPB
/veranstaltungen/live-radiant-...Live Radiant: Moyka
/veranstaltungen/live-radiant-...Text duplicate Live Radiant: Moyka
IMG-ALT Porträt Moyka © Ida Fiskaa
/veranstaltungen/toweldayPer Anhalter durch die Galaxis
/veranstaltungen/toweldayper anhalter durch die galaxis Lesung zum Towel Day
IMG-ALT Brauner Berg unter dem Sternenhimmel © John Fowler (@wildhoney) via unsplash
/astronomie-aktuellAstronomie Aktuell
/astronomie-aktuellText duplicate Astronomie Aktuell
IMG-ALT Astronomie Aktuell mit Tim Florian Horn | Orionnebel © ESO/H. Drass et al.
/musical-spheresmusical spheres
/musical-spheresText duplicate musical spheres
IMG-ALT musical spheres Key Visual © SPB, Design: Ta-Trung, Berlin
/veranstaltungen/explorehaende...explore_händel im Planetarium
/veranstaltungen/explorehaende...explore_Händel im planetarium 10 Jahre Stegreif
IMG-ALT Stegreif Konzert © Navina Neuschl
/veranstaltungen/abenteuerreis...Die große Abenteuerreise durchs Sonnensystem
/veranstaltungen/abenteuerreis...Die große abenteuerreise durchs sonnensystem
IMG-ALT Visualisierung aus dem Programm © NSC Creative
/veranstaltungen/nacht-auf-der...Nacht auf der Sternwarte
/veranstaltungen/nacht-auf-der...Nacht auf der Sternwarte Beobachtung mit dem 500-mm-Spiegelteleskop
IMG-ALT Archenhold-Sternwarte im Sonnenuntergang © SPB / Foto: O. Kwok
/veranstaltungen/matariki-sky-...Matariki – The Sky above New Zealand
/veranstaltungen/matariki-sky-...Matariki – The Sky above New Zealand Eine ganz spezielle Sternstunde
IMG-ALT Die Plejaden. © Starhopper
/veranstaltungsart/planetariumPlanetarium
IMG-ALT Planetarium
/veranstaltungsart/sternwarteSternwarte
IMG-ALT Sternwarte
/veranstaltungsart/highlights-...Highlights & Konzerte
IMG-ALT Highlights & Konzerte
/veranstaltungsart/hoerspiele-...Hörspiele & Lesungen
IMG-ALT Hörspiele & Lesungen
/veranstaltungsart/kinder-familieKinder & Familie
IMG-ALT Kinder & Familie
/veranstaltungsart/kita-schuleKita & Schule
IMG-ALT Kita & Schule
/veranstaltungsart/kinoKino
IMG-ALT Kino
/veranstaltungsart/musikMusik
IMG-ALT Musikprogramme
/veranstaltungsart/vortraegeVorträge
IMG-ALT Vorträge
/veranstaltungsart/wissenschaf...Wissenschaftstheater
IMG-ALT Wissenschaftstheater
/veranstaltungsart/workshops-k...Workshops & Kurse
IMG-ALT Workshops & Kurse
/termine-ticketsWeitere Veranstaltungen
A-TITLE Weitere Veranstaltungen
/blog/unsichtbare-weltenKommt zu unseren Thementagen »Unsichtbare Welten: Vom Mikrokosmos zum Universum« vom 9. bis 13. April!
/blog/unsichtbare-weltenmehr...
/blog/partielle-sonnenfinstern...Partielle Sonnenfinsternis am 29. März 2025: wir laden euch zu spannenden Live-Events und Highlight-Veranstaltungen an allen drei Standorten ein!
/blog/partielle-sonnenfinstern...Text duplicate mehr...
/blogAlle Blogeinträge
A-TITLE Alle Blogeinträge
/zeiss-grossplanetariumIMG-ALT Zeiss-Großplanetarium
/zeiss-grossplanetariumText duplicate Zeiss-Großplanetarium
/archenhold-sternwarteIMG-ALT Archenhold-Sternwarte
/archenhold-sternwarteText duplicate Archenhold-Sternwarte
/wilhelm-foerster-sternwarteIMG-ALT Wilhelm-Foerster-Sternwarte
/wilhelm-foerster-sternwarteText duplicate Wilhelm-Foerster-Sternwarte
/planetarium-am-insulanerIMG-ALT Planetarium am Insulaner
/planetarium-am-insulanerText duplicate Planetarium am Insulaner
/ueber-uns-ALTMehr Informationen
A-TITLE Mehr Informationen
/zeiss-grossplanetariumText duplicate Zeiss-Großplanetarium
https://de-de.facebook.com/zei...External Subdomain A-TITLE Facebook
https://www.instagram.com/plan...External Subdomain A-TITLE Instagram
https://www.youtube.com/stiftu...External Subdomain A-TITLE YouTube
https://www.tiktok.com/@planet...External Subdomain No Text
/archenhold-sternwarteText duplicate Archenhold-Sternwarte
https://de-de.facebook.com/arc...External Subdomain Text duplicate A-TITLE Facebook
https://www.instagram.com/plan...External Subdomain Text duplicate A-TITLE Instagram
https://www.youtube.com/stiftu...External Subdomain Text duplicate A-TITLE YouTube
https://www.tiktok.com/@planet...External Subdomain No Text
/wilhelm-foerster-sternwarteText duplicate Wilhelm-Foerster-Sternwarte
https://de-de.facebook.com/pla...External Subdomain Text duplicate A-TITLE Facebook
https://www.instagram.com/plan...External Subdomain Text duplicate A-TITLE Instagram
https://www.youtube.com/stiftu...External Subdomain Text duplicate A-TITLE YouTube
https://www.tiktok.com/@planet...External Subdomain No Text
/planetarium-am-insulanerText duplicate Planetarium am Insulaner
https://de-de.facebook.com/pla...External Subdomain Text duplicate A-TITLE Facebook
https://www.instagram.com/plan...External Subdomain Text duplicate A-TITLE Instagram
https://www.youtube.com/stiftu...External Subdomain Text duplicate A-TITLE YouTube
https://www.tiktok.com/@planet...External Subdomain No Text
/newsletterText duplicate Newsletter
A-TITLE Newsletter
/faq-haeufig-gestellte-fragenFAQ
A-TITLE Häufig gestellte Fragen
/impressumImpressum
A-TITLE Impressum
/datenschutzDatenschutz
A-TITLE Datenschutz
/ticketsText duplicate Termine & Tickets

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.planetarium.berlin/"
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 is excellent with 0.04 seconds.
The file size of the HTML document is fine (124 kB).

HTTP Response Header

NameValue
cache-controlmax-age=900, public
dateFri, 09 May 2025 12:17:54 GMT
x-drupal-dynamic-cacheMISS
content-languagede
x-content-type-optionsnosniff
x-frame-optionsSAMEORIGIN
expiresSun, 19 Nov 1978 05:00:00 GMT
varyCookie
x-generatorDrupal 10 (https://www.drupal.org)
x-drupal-cacheHIT
last-modifiedFri, 09 May 2025 12:00:33 GMT
etag"1746792033"
content-length127164
content-typetext/html; charset=UTF-8
serverApache
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 186 referring domains.
This page has 1,224 backlinks.
This page has backlinks from 176 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

#
# robots.txt
#
# This file is to prevent the crawling and indexing of certain parts
# of your site by web crawlers and spiders run by sites like Yahoo!
# and Google. By telling these "robots" where not to go on your site,
# you save bandwidth and server resources.
#
# This file will be ignored unless it is at the root of your host:
# Used:    http://example.com/robots.txt
# Ignored: http://example.com/site/robots.txt
#
# For more information about the robots.txt standard, see:
# http://www.robotstxt.org/robotstxt.html

User-agent: *
# CSS, JS, Images
Allow: /core/*.css$
Allow: /core/*.css?
Allow: /core/*.js$
Allow: /core/*.js?
Allow: /core/*.gif
Allow: /core/*.jpg
Allow: /core/*.jpeg
Allow: /core/*.png
Allow: /core/*.svg
Allow: /profiles/*.css$
Allow: /profiles/*.css?
Allow: /profiles/*.js$
Allow: /profiles/*.js?
Allow: /profiles/*.gif
Allow: /profiles/*.jpg
Allow: /profiles/*.jpeg
Allow: /profiles/*.png
Allow: /profiles/*.svg
# Directories
Disallow: /core/
Disallow: /profiles/
# Files
Disallow: /README.md
Disallow: /composer/Metapackage/README.txt
Disallow: /composer/Plugin/ProjectMessage/README.md
Disallow: /composer/Plugin/Scaffold/README.md
Disallow: /composer/Plugin/VendorHardening/README.txt
Disallow: /composer/Template/README.txt
Disallow: /modules/README.txt
Disallow: /sites/README.txt
Disallow: /themes/README.txt
Disallow: /web.config
# Paths (clean URLs)
Disallow: /admin/
Disallow: /comment/reply/
Disallow: /filter/tips
Disallow: /node/add/
Disallow: /search/
Disallow: /user/register
Disallow: /user/password
Disallow: /user/login
Disallow: /user/logout
Disallow: /media/oembed
Disallow: /*/media/oembed
# Paths (no clean URLs)
Disallow: /index.php/admin/
Disallow: /index.php/comment/reply/
Disallow: /index.php/filter/tips
Disallow: /index.php/node/add/
Disallow: /index.php/search/
Disallow: /index.php/user/password
Disallow: /index.php/user/register
Disallow: /index.php/user/login
Disallow: /index.php/user/logout
Disallow: /index.php/media/oembed
Disallow: /index.php/*/media/oembed

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Search preview

www.planetarium.berlin
Stiftung Planetarium Berlin
Die Stiftung Planetarium Berlin wurde zum 1. Juli 2016 als rechtsfähige Stiftung des öffentlichen Rechts errichtet und vereint erstmals in der Geschichte der Stadt die astronomischen Einrichtungen Berlins.

Most important keywords

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

KeywordResultRecheck
Planetarium83%Check
Planetarium Berlin82%Check
Berlin77%Check
Stiftung Planetarium Berlin77%Check
Stiftung68%Check
Planetarium am Insulaner60%Check
Archenhold-Sternwarte48%Check
Sternwarte48%Check
Wilhelm-Foerster-Sternwarte48%Check
Zeiss-Großplanetarium46%Check
Show more keywords and terms

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