Ub.uni-heidelberg.de - SEO Checker

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Overview of the SEO Check
Meta information
79% 
Page quality
64% 
Page structure
95% 
Link structure
62% 
Server
91% 
External factors
100% 
SEO Score
Response time
0.13 s
File size
154.10 kB
Words
442
Media files
8
Number of links
61 internal / 14 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Heidelberg University Library - Heidelberg University Library
There are word repetitions in the page title.
The length of the page title is perfect. (535 pixels out of 580 max pixel length)
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.ub.uni-heidelberg.de/en
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Germany
The following language is defined by HTML: en
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)
This page is hosted on a subdomain. Use a top level domain for better SEO results.
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
theme-color#000000
titleHeidelberg University Library - Heidelberg University Library
robotsindex, follow
referrerorigin
langen
X-UA-CompatibleIE=edge
charsetUTF-8

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Page quality

Content
(Critically important)
There are only 442 words on this page. Good pages should have about 800 words of useful content.
27.1% 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.
4 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 24.75 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
A viewport "width=device-width, initial-scale=1" is provided.
At least one Apple touch icon is specified.
This page only loads 1 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 9 tags for this page.
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)
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
...s/site_logo/WEB Kopfgrafik UB_EN_7_0.svgHeidelberg University Library logo
...sade_Giebel.jpg?h=8f74817f&itok=fUX4NEVrNo alt attribute provided
...onsultation.jpg?h=f6963184&itok=2bzYAEqBNo alt attribute provided
...llustration.jpg?h=63c0a64f&itok=HQyQcvmoNo alt attribute provided
...r_ueber-uns.jpg?h=5c7535fd&itok=4QfHctZ8No alt attribute provided
...atursuche_0.jpg?h=5c7535fd&itok=oGuSfy35No alt attribute provided
...08/img_2129.jpg?h=16614865&itok=jWPK85jMNo alt attribute provided
...en-access_0.jpg?h=5c7535fd&itok=xxL4n3HdNo alt attribute provided

Page structure

H1 heading
(Critically important)
Heidelberg University Library
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.

Heading structure

Heading levelContent
H1 Heidelberg University Library
H2 Accessibility links
H2 Links
H2 About us
H2 Literature search
H2 Service
H2 Open Access
H2 Footer
H3 New! heiSKILLS Writing Consultations – Now at the University Library (UB)
H3 Password change for HEIDI identifiers
H3 Navigation
H3 Quicklinks
H3 ​
H3 Contact
H3 Languages
H3 Footer Legal
H3 Footer Social Media
H3 Footer Legal Duplicate text
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.
2 links don't have an anchor text.
The number of internal links is ok.
None of the anchor texts is too long.
There are 14 external links on this page.

Found links on this page

LinkAttributesAnchor text
/enAnchor Jump to main content
/en?overlay=menuOpen Main Navigation
/en?overlay=searchOpen Search Form
https://www.uni-heidelberg.de/New window External Subdomain Heidelberg University
/en?overlay=menuNo Text
/en?overlay=searchNo Text
/en/about-usAbout us
/en/literatursucheLiterature search
/en/serviceService
/en/open-accessOpen Access
/enIMG-ALT Heidelberg University Library logo
/en/literatursuche/kataloge/heidiCatalogue and account HEIDI Learn more
/en/service/trainingTraining & Advice Learn more
/Englisch/service/anmeldung.htmlNew window Subdomain Initial registration for students Learn more
/en/service/a-zUB A-Z Learn more
/en/service/digitale-bibliothekDigital Library Learn more
/en/open-access/publizierenOpen Access Publishing Learn more
/Englisch/helios/digi/digilit....New window Subdomain Historical holdings – digital Learn more
/en/node/196Resources by subject Learn more
https://katalog.ub.uni-heidelb...New window External Subdomain Search
/en/newsroom/new-heiskills-wri...Main Library New! heiSKILLS Writing Consultations – Now at the University Library (UB)
/en/newsroom/required-password...IT Security Password change for HEIDI identifiers
/en/aktuellesNews
/en/about-us/your-ubYour UB
/en/about-us/your-ub/opening-t...Opening hours
/en/about-us/contactContact
/en/service/a-zUB A-Z
/cgi-bin/ub3d.cgi?sprache=enNew window Subdomain Virtual tour
/en/about-usLearn more
/Englisch/helios/kataloge/heid...New window Subdomain Catalogue HEIDI
/Englisch/allg/benutzung/berei...New window Subdomain Interlibrary loan
/Englisch/helios/kataloge/heib...New window Subdomain heiBIB – Heidelberg University Bibliography
/Englisch/service/heiopensearc...New window Subdomain heiOPENsearch
/en/literatursucheText duplicate Learn more
/en/service/lending-serviceLending Service
/Englisch/service/auskunft.htmlNew window Subdomain Library reference desk
/Englisch/helios/digi/Welcome....New window Subdomain Digitisation Department
/en/service/trainingTraining & Advice
/en/serviceText duplicate Learn more
https://heiup.uni-heidelberg.d...New window External Subdomain heiUP – Heidelberg University Publishing
http://archiv.ub.uni-heidelber...New window External Subdomain heiDOK – The Heidelberg Document Repository
https://www.data.uni-heidelber...New window External Subdomain Competence Centre for Research Data / heiDATA
/Englisch/service/openaccess/p...New window Subdomain Publishing fund
/Englisch/helios/digi/digilit....New window Subdomain Historical holdings – digital
/en/open-accessText duplicate Learn more
/de/universitaetsbibliothek-he...Deutsch
/en?overlay=contactText duplicate Contact
/en/about-usText duplicate About us
A-TITLE Information about us
/en/literatursucheText duplicate Literature search
A-TITLE Information about literature search and available catalogues
/en/serviceText duplicate Service
A-TITLE Information on the use and services of Heidelberg University Library
/en/open-accessText duplicate Open Access
A-TITLE Open Access offerings of Heidelberg University Library
/a-z/a.htmlNew window Subdomain UB A–Z
/helios/kataloge/heidi.htmlNew window Subdomain Text duplicate Catalogue HEIDI
A-TITLE Catalogue and library account HEIDI
/schulung/Welcome.htmlNew window Subdomain Text duplicate Training & Advice
A-TITLE Information on our training and learning opportunities
/service/anmeldung.htmlNew window Subdomain Initial Registration for Students
A-TITLE How to register with UB Heidelberg
/allg/profil/adoeftel.htmlNew window Subdomain Opening Hours
/helios/Welcome.htmlNew window Subdomain Digital Library
A-TITLE Information on our digital resources
/service/openaccess/Welcome.htmlNew window Subdomain Open Access Electronic Publishing
/helios/digi/digilit.htmlNew window Subdomain Heidelberg historic literature – digitized
/en/about-us/contactText duplicate Contact
https://www.uni-heidelberg.de/New window External Subdomain To Heidelberg University website
https://www.uni-heidelberg.de/New window External Subdomain No Text
/de/universitaetsbibliothek-he...Text duplicate Deutsch
/en/heidelberg-university-libraryEnglish
https://www.uni-heidelberg.de/...New window External Subdomain Privacy statement
/en/imprintImprint
https://www.uni-heidelberg.de/...New window External Subdomain Accessibility
/intern/New window Subdomain intern
https://www.facebook.com/ubhei...New window External Subdomain No Text
https://www.instagram.com/ubhe...New window External Subdomain No Text
https://www.youtube.com/channe...New window External Subdomain No Text
https://www.uni-heidelberg.de/...New window External Subdomain Text duplicate Privacy statement
/en/imprintText duplicate Imprint
https://www.uni-heidelberg.de/...New window External Subdomain Text duplicate Accessibility
/intern/New window Subdomain Text duplicate intern

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.ub.uni-heidelberg.de/en"
HTTP header
(Important)
The X-powered header is sent within the response header. (unnecessary)
The web server transmits the web page (HTML) in compressed form.
Performance
(Somewhat important)
The page response time is excellent with 0.13 seconds.
This page only loads 1 CSS files. That's ok.
This page only loads 1 JavaScript files. That's good!
The file size of the HTML document is fine (154 kB).

HTTP Response Header

NameValue
servernginx
dateMon, 14 Jul 2025 12:26:34 GMT
content-typetext/html; charset=utf-8
transfer-encodingchunked
x-powered-byExpress
cache-tags2TVk wR-K DLCQ wzTk Luoa NGjB QBaD 2NSU Z6pv 9Oqp e0aG ys53 4-00 y3C3 bblJ tzRl EGTs XkRp kvI4 ONsp di2y Bs82 B0ld lgCJ 8DtB RoHB nPWT yDQg lJH_ zAlc z8Me qQ7r OeSg Mj8c yLdm Fw2A zYZK 18Uh DmNd QV2R 8GnW N0kc r-M7 RdPm 7OKy xB__ B1IU h8SL kwAh 9wv5 DB3L zCJn 2ZXW elbl RJMM
cache-controlpublic, max-age=0, s-maxage=2628000
x-varnish2470059 2494355
age2311
via1.1 varnish (Varnish/6.0)
x-varnish-cacheHIT
strict-transport-securitymax-age=63072000
content-encodinggzip
set-cookie106 Characters
statuscode200
http_versionHTTP/1.1

External factors

This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 284 referring domains.
This page has 304 backlinks.
This page has backlinks from 101 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

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.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
# 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

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Search preview

Most important keywords

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

KeywordResultRecheck
Heidelberg71%Check
Heidelberg University71%Check
Heidelberg University Library70%Check
University68%Check
Library68%Check
University Library68%Check
Digital Library52%Check
Central Library52%Check
Access44%Check
Open Access44%Check
Show more keywords and terms

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