Haus-der-astronomie.de - SEO Checker

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Overview of the SEO Check
Meta information
61% 
Page quality
79% 
Page structure
75% 
Link structure
86% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.24 s
File size
265.20 kB
Words
407
Media files
16
Number of links
100 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Startseite
The title contains the word Startseite! More content should be covered in the title.
The page title is too short. (85 pixels of 580 max pixel length) Optimize title
The page title is only one word.
There are no duplicate words in the title
Meta description
(Critically important)
Haus der Astronomie
The meta description is too short. (130 pixels out of 1000 max pixel length) Optimize description
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.haus-der-astronomie.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)
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
keywordsHaus der Astronomie
descriptionHaus der Astronomie
msapplication-TileColor#fff
msapplication-square70x70logo/assets/institutes/hda/favicon-fd0f7822b655991545104223f2a3141ca27606bff0b5e277eba94b7c07df6c1c.ico
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csrf-paramauthenticity_token
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generatorJustRelate CX Cloud (www.justrelate.com)
langde
og:titleStartseite
og:descriptionHaus der Astronomie
og:typewebsite
og:urlhttps://www.haus-der-astronomie.de/
og:imagehttps://www.haus-der-astronomie.de/assets/institutes/hda/og-logo-f272e128bf485ed8479ae5424ca66b9e860896011ca2bdc2ad23e765dc4c277e.jpg
X-UA-CompatibleIE=edge
Content-Typetext/html; charset=UTF-8

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Page quality

Content
(Critically important)
There are only 407 words on this page. Good pages should have about 800 words of useful content.
27% of the text are stop words.
The page contains a listing, which indicates a good text layout.
3 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 18.2 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 8 tags for this page.
Image SEO
(Somewhat important)
2 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
data:[...] Base64Über das Haus der Astronomie
data:[...] Base64Online-Talkshow „Astro & Co“
data:[...] Base64Virtuelle Tour durch das Haus der Astronomie
data:[...] Base64Astro-Apps zur Visualisierung und Aktivierung
data:[...] Base64Planetarium im Haus der Astronomie Bild: Sebastian Schnepper
data:[...] Base64Informationen in leichter Sprache
data:[...] Base64HdA-Mailingliste
...icon_rounded_square_color-1561024484.png@HdAstro auf Twitter
/3803527/yt_icon_rgb2-1561042803.pngHdA auf YouTube
/3803497/insta-glyph-1561042673.pngHdA auf Instagram
...3390/f_logo_rgb-blue_1024-1561023745.pngNo alt attribute provided
...e/Public/MPIA/roofcam/images/current.jpgNo alt attribute provided
data:[...] Base64original
data:[...] Base64Logo der KTS
data:[...] Base64original
data:[...] Base64original

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.
Some headings do not have any content.

Heading structure

Heading levelContent
H2 Über das Haus der Astronomie
H2 Online-Talkshow „Astro & Co“
H2 Virtuelle Tour durch das Haus der Astronomie
H2 Astro-Apps zur Visualisierung und Aktivierung
H2 Folgen Sie uns auf Sozialen Medien!
H2 HdA-Webcam
H3 Aktuelle Veranstaltungen
H3 Informationen in leichter Sprache
H3 HdA-Mailingliste
H3 Nachrichten
H3 Empty heading
H3 Empty heading
H3 Empty heading
H3 Empty heading
H4 Per Anhalter durch die Galaxis
H4 Astronomietag und Lange Nacht der Astronomie am 19. Oktober 2024
H4 Kontakt und Anfahrt
H4 Social Media
H4 Empty heading
Some anchor texts are used more than once.
There are 3 links with a trivial 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
/No Text
/enEnglish
/de/newsAktuelles
/veranstaltungenAktuelle Veranstaltungen
/astro-und-coOnline-Talkshow Astro & Co
/faszination-astronomieVortragsreihe Faszination Astronomie
/grosse-reise-durch-das-universumDie große Reise durch das Universum
/de/veranstaltungen/vortraege/...Veranstaltungsarchiv
/3813915/FamilienveranstaltungenFamilienveranstaltungen
/4138613/per-anhalter-durch-di...Per Anhalter durch die Galaxis
/1498520/FuehrungenFÜHRUNGEN
/workshopsFür Schule und Kindergarten
/workshops/kindergartenWorkshops Kindergarten
/3840120/Fortbildungen-Kinderg...Fortbildungen Kindergarten
/workshops/grundschulenWorkshops Grundschule
/3840131/Fortbildungen-Grundsc...Fortbildungen Grundschule
/workshops/wfschulenWorkshops weiterführende Schulen
/de/veranstaltungen/fortbildungenFortbildungen weiterführende Schulen
/de/veranstaltungen/lehrverans...Lehrveranstaltungen
/pastroPASTRO Astronomie für Lehramt (Uni)
/adidaADIDA Astronomiedidaktik (Uni)
/3781364/astronomie-fuer-nicht...Astronomie für Neugierige (Uni)
/3537853/Vorlesung-PH-HeidelbergBlockseminar Lehramtsstudierende (PH)
/de/veranstaltungen/tagungenWissenschaftliche Tagungen
/de/angebote/hda-besuchenDas HdA besuchen
/de/angebote/hda-besuchenÖffnungszeiten
/fuehrungenFührungen
/workshopsWorkshops
/3821885/HdA-mietenDas HdA mieten
/workshops/familienFamilienworkshops
/3840120/Fortbildungen-Kinderg...Text duplicate Fortbildungen Kindergarten
/3840131/Fortbildungen-Grundsc...Text duplicate Fortbildungen Grundschule
/de/veranstaltungen/fortbildungenText duplicate Fortbildungen weiterführende Schulen
/de/angebote/beratungBeratungsangebote
/bildungsmaterialienBildungsmaterialien
/de/angebote/forschung-praktikaPraktika und Forschungsprojekte
/girls-dayGirls' Day
/boys-dayBoys' Day
/de/angebote/staatsexamensarbe...Abschlussarbeiten
/de/veranstaltungen/lehrverans...Lehrveranstaltungen Uni/PH
/visualisierungVisualisierung
/astronomie-fuer-alleAusstellung "Astronomie für Alle"
/de/ueber-das-hdaWer wir sind und was wir tun
/de/personenPersonen im HdA
/de/was-wir-tunWas wir tun
/de/ueber-das-hda/vorgeschichteVorgeschichte
/de/ueber-das-hda/gebaeudeGebäude
/soziale-medienSoziale Medien
/de/bilder-und-videosBilder / Videos
/puzzlesPuzzles
/virtualtourVirtuelle Tour
/de/angebote/forschung-praktik...Unsere Teleskope und Instrumente
/de/ueber-das-hda/netzwerkNetzwerk
/de/ueber-das-hda/partner-und-...Partner und Förderer
/de/ueber-das-hda/kooperationenKooperationen
/de/partnerschulenPartnerschulnetzwerk
/de/ueber-das-hda/sterne-und-w...Sterne und Weltraum
/de/ueber-uns/astronomieschuleAstronomieschule
/newsletter-lehrkraefteNewsletter für Lehrkräfte weiterführender Schulen
/oae-at-hdaIAU Office Of Astronomy for Education
/bildung/kiga-grundschuleBildungsmaterialien Kindergarten und Grundschule
/3820487/Orientierung-BeobachtungOrientierung/Beobachtung
/3820498/Sonne-PlanetensystemeSonne und Planetensysteme
/vis/astroappsInteraktive Astro-Apps
/bildung/schulenBildungsmaterialien weiterführende Schulen
/3820594/Orientierung-BeobachtungText duplicate Orientierung/Beobachtung
/3820604/GrundlagenGrundlagen
/3820554/Sonne-PlanetensystemeText duplicate Sonne und Planetensysteme
/3820564/SterneSterne
/3820574/Milchstrasse-Galaxien...Milchstraße, Galaxien, Kosmologie
/3820584/RaumfahrtRaumfahrt
/de/angebote/unterrichtsmateri...Zum Ausleihen
/de/was-wir-tun/materialien/as...Grundschulbox
/de/was-wir-tun/materialien/in...Infrarotkoffer
/schulteleskopeSchulteleskope
/de/ueber-das-hda/kooperatione...Wissenschaft in die Schulen!
/raum-fuer-bildungRaum für Bildung
/de/ueber-das-hda/kooperatione...Universe Awareness (UNAWE)
/de/kontakt-anfahrtKontakt/Anfahrt
/enText duplicate English
/de/was-wir-tunÜber das Haus der Astronomie
IMG-ALT Über das Haus der Astronomie
/astro-und-coOnline-Talkshow „Astro & Co“
IMG-ALT Online-Talkshow „Astro & Co“
/news/virtuelle-tourNew window Virtuelle Tour durch das Haus der Astronomie
IMG-ALT Virtuelle Tour durch das Haus der Astronomie
/vis/astroappsAstro-Apps zur Visualisierung und Aktivierung
IMG-ALT Astro-Apps zur Visualisierung und Aktivierung
/veranstaltungenIMG-ALT Planetarium im Haus der Astronomie Bild: Sebastian Schnepper
/veranstaltungenText duplicate Aktuelle Veranstaltungen
/veranstaltungenTrivial anchor text
mehr
/leichte-spracheIMG-ALT Informationen in leichter Sprache
/leichte-spracheText duplicate Informationen in leichter Sprache
/leichte-spracheText duplicate Trivial anchor text
mehr
/newsletterIMG-ALT HdA-Mailingliste
/newsletterText duplicate HdA-Mailingliste
/newsletterText duplicate Trivial anchor text
mehr
/aktuelles/weihnachtsveranstal...Text duplicate Per Anhalter durch die Galaxis
/4009202/astronomietag-2024Astronomietag und Lange Nacht der Astronomie am 19. Oktober 2024
http://twitter.com/HdAstroExternal IMG-ALT @HdAstro auf Twitter
http://www.youtube.com/HausDer...External Subdomain IMG-ALT HdA auf YouTube
https://www.instagram.com/haus...External Subdomain IMG-ALT HdA auf Instagram
http://www.facebook.com/HausDe...External Subdomain No Text
/Anchor Top
/de/kontakt-anfahrtKontakt und Anfahrt
https://bsky.app/profile/hausd...New window External Bluesky
https://astrodon.social/@hausd...New window External Mastodon
http://www.youtube.com/HausDer...New window External Subdomain YouTube
http://www.facebook.com/HausDe...New window External Subdomain Facebook
https://www.instagram.com/haus...New window External Subdomain Instagram
https://www.mpg.de/deNew window External Subdomain No Text
https://www.mpg.de/deNew window External Subdomain Max-Planck-Gesellschaft
/de/impressumImpressum
/datenschutzhinweisDatenschutzhinweis
/?print=yesNofollow Im neuen Fenster öffnen
https://hda.iedit.mpg.de/2301/deNew window Nofollow External Subdomain Zur Redakteursansicht
A-TITLE https://hda.iedit.mpg.de/2301/de

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.haus-der-astronomie.de/"
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 0.24 seconds.
The file size of the HTML document is fine (265 kB).

HTTP Response Header

NameValue
dateThu, 16 Jan 2025 20:53:32 GMT
serverApache
cache-controlmax-age=120, public
referrer-policystrict-origin-when-cross-origin
x-permitted-cross-domain-policiesnone
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x-ua-compatibleIE=Edge
x-content-type-optionsnosniff
content-security-policyframe-ancestors 'self' piwik.mpg.de statistics.mpg.de statistik.mpg.de;
set-cookie399 Characters
etagW/"1982c45092cdaf35ab1b3696185c5a62"
status200 OK
varyAccept-Encoding
content-typetext/html; charset=utf-8
content-encodinggzip
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 412 referring domains.
This page has 46,649 backlinks.
This page has backlinks from 358 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

# Generated by CMS-App (default)
User-agent: *
Sitemap: https://www.haus-der-astronomie.de/sitemap.xml

Similar sites

Search preview

www.haus-der-astronomie.de
Startseite
Haus der Astronomie

Most important keywords

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

KeywordResultRecheck
Astronomie68%Check
Haus68%Check
HdA44%Check
Visualisierung40%Check
Virtuelle40%Check
Tour40%Check
Astro-Apps40%Check
leichter40%Check
Sprache40%Check
Virtuelle Tour40%Check
Show more keywords and terms

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