- SEO Checker

Overview of the SEO Check
Meta information
Page quality
Page structure
Link structure
External factors
SEO Score
Response time
0.23 s
File size
19.10 kB
Media files
Number of links
92 internal / 1 external

Task list of SEO Improvements

Meta specifications

(Critically important) [Siences interactive]
The length of the page title is perfect. (422 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Eine Sammlung von interaktiven Animationen, Simulationen und Videofilmen für den Chemieunterricht und Biologieunterricht.
The length of the meta description is perfect. (771 pixels out of 1000 max pixel length)
(Critically important)
There are no problems in accessing the website.
Canonical URL
No canonical link is specified.
(Somewhat important)
Language detected in text: de
Language defined in HTML: de
Server location: Germany
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.
(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 character encoding is not specified in the HTTP header.
The charset encoding (UTF-8) is set correctly.
(Nice to have)
The doctype HTML 5 is set correctly.
The doctype is placed at first in the HTML code.
(Nice to have)
The favicon is linked correctly.

Meta tags

AuthorR.-P. Schmitz
PublisherR.-P. Schmitz
CopyrightR.-P. Schmitz
descriptionEine Sammlung von interaktiven Animationen, Simulationen und Videofilmen für den Chemieunterricht und Biologieunterricht.
viewportwidth=device-width, initial-scale=1.0, shrink-to-fit=no

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Page quality

(Critically important)
Some words from the page title are not used within the pages content
Only 1 paragraph/s was/were found on this page.
There are only 486 words on this page. Good pages should have about 800 words of useful content.
The average number of words per sentence of 7.5 words is low.
24.5% of the text are stop words.
Words from the H1 heading are used in the page content.
The page contains a listing, which indicates a good text layout.
No placeholders texts or images were found.
There are no duplicates on the site.
(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, shrink-to-fit=no" is provided.
This page only loads 1 JavaScript files. That's good!
Bold and strong tags
(Somewhat important)
The following tag is repeated too often: c
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
Social Networks
(Nice to have)
There are only a few social sharing widgets on the page. Make your website popular in social networks with social sharing widgets.
Additional markup
(Nice to have)
No additional page markup was found.
(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
/bilder-index/3Monitore-min.pngNo alt attribute provided
/bilder-index/laptop-min.pngNo alt attribute provided
/bilder-index/laptop2-min.pngNo alt attribute provided

Page structure

H1 heading
(Critically important)
Chemie interaktiv
The H1 heading is too short (17 characters). It should be at least 20 Characters long.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Chemie interaktiv
H2 Multimedia-Bausteine für den Chemieunterricht
H2 Online-Animationen ↗
H2 Offline-Animationen ↗
H2 3D-Molekül- Viewer ↗
H3 Hinweis:
H5 Bergische Universität Wuppertal Didaktik der Chemie ↗
H5 Index - Online
H5 Index - Offline ⟶ Download für Windows
H5 Entwicklung der Multimedia-Bausteine
H5 Animationen im Unterricht
H5 Organisation
Some internal link anchor texts are too long.
The number of internal links is ok.
Every linktext is unique.
All internal links are not using dynamic parameters.
There are 1 external links on this page.
LinkAttributesAnchor text
https://chemiedidaktik.uni-wup...New window External Subdomain Kooperationspartner bis 2010 Bergische Universität Wuppertal Didaktik der Chemie
A-TITLE In neuem Tab öffnen
/index.html🏠 Startseite
/ff.html📡 Online
/flashfilme.html💽 Offline
/mol_viewer.html🧬 Mol‑Viewer
/ffbio.html🌻 Biologie
/information.htmlℹ Information
/ff.htmlOnline-Animationen ↗ Animationen im Browser darstellen
/flashfilme.htmlOffline-Animationen ↗ Animationen für Windows-Computer zum Download 1 Mausklick: Download 1 Mausklick: Entpacken 1 Mausklick: Programm starten
/mol_viewer.html3D-Molekül- Viewer ↗ Molekülmodelle im Browser anzeigen Moleküle dreidimensional präsentieren Strukturen analysieren Molekülanimationen
/mol_viewer.html... ↗
A-TITLE Zur Info-Seite springen
/Anchor ↑ Top
/ff.htmlChromatografie von Filzstiftfarben (Teilchenmodell) [a140] ↗
/ff.htmlEin Fall für zwei [a250] ↗
/ff.htmlGalvanisches Zelle [a130] ↗
/ff.htmlSpannungs- und Strommessung in galvanischen Zellen [a172] ↗
/ff.htmlGalvanisieren [a180] ↗
/ff.htmlKnallgasreaktion [a190] ↗
/ff.htmlLichtreaktion der Fotosynthese [a251] ↗
/ff.htmlLösung von Salz im Modell [a140] ↗
/ff.htmlNaCl - Synthese [a300] ↗
/ff.htmlNaCl - Synthese Variante [a305] ↗
/ff.htmlÜbung zum PSE [a120] [a121] ↗
/ff.htmlPhenolphthalein - zwei Gesichter [a200] ↗
/ff.htmlStreuversuch von Rutherford [a110] [a111] ↗
/ff.htmlEinführung Redoxreaktion ↗
/ff.htmlStromleitung in Metallen, Lösungen und Halbleitern [a160] ↗
/ff.htmlVerbrennung von Eisenwolle (Teilchenmodell) [a142] ↗
/ff.htmlVerbrennung von Holz (Teilchenmodell) [a143] ↗
/mol_viewer.htmlMolekül-Viewer - Variante 4A [a504] ↗
/mol_viewer.htmlMolekül-Viewer - Variante 3A [a501] ↗
/mol_viewer.htmlMolekül-Viewer - Variante 3B[a502] ↗
/flashfilme.htmlAggregatzustände im Vergleich [b141] ↗
/flashfilme.htmlAnimationssammlung zur Synthese von Natriumchlorid [b303] ↗
/flashfilme.htmlAnimationssammlung zum Lösungsvorgang von NaCl [b109] ↗
/flashfilme.htmlChlorknallgasreaktion - Mechanismus - energ. Betrachtung [b220] ↗
/flashfilme.htmlChromatografie von Filzstiftfarben [b140] ↗
/flashfilme.htmlβ-Carotin und Chlorophyll unter UV-Licht [b254] [b253] ↗
/flashfilme.htmlWie arbeiten Chlorophyll und β-carotin zusammen? [b255] ↗
/flashfilme.htmlAnimation für das Praktikum [b250] ↗
/flashfilme.htmlDie Dichteanomalie des Wassers [b095] ↗
/flashfilme.htmlEin Fall für zwei [b256] ↗
/flashfilme.htmlEis, Wasser, Teilchenmodell [b098] ↗
/flashfilme.htmlEinführung Eisen reagiert in Kupfersulfat-Lösung [b170] ↗
/flashfilme.htmlGalvanisches Element [b130] ↗
/flashfilme.htmlZuordnungsaufgabe zum galvanischen Element [b173] ↗
/flashfilme.htmlAnimation zum Gefriervorgang [b096] ↗
/flashfilme.htmlSpannungs- und Strommessung in galvanischen Zellen [b172] ↗
/flashfilme.htmlGalvanisieren [b180] ↗
/flashfilme.htmlKnallgasreaktion [b190] ↗
/flashfilme.htmlAuflösung von Kochsalz unter dem Mikroskop [b105] ↗
/flashfilme.htmlAufbau von Kochsalzkristallen [b108] ↗
/flashfilme.htmlKochsalz-Lösung und Teilchenmodell [b107] ↗
/flashfilme.htmlLichtreaktion der Fotosynthese [b251] ↗
/flashfilme.htmlDie Metallbindung - Metalldose und Teilchenmodell [b124] ↗
/flashfilme.htmlDie Moleküle "fangen" Moleküle - ein Prinzip der Textilerfrischer [b201] ↗
/flashfilme.htmlLösung eines NaCl-Modells in Wasser [b104] ↗
/flashfilme.htmlNaCl - Synthese Modell und Videoclip [b300] ↗
/flashfilme.htmlNaCl - Synthese Modell und Videoclip Variante [b305] ↗
/flashfilme.htmlÜbung zum PSE [b120] [b121] ↗
/flashfilme.htmlWie gewinnen Pflanzen Energie aus Sonnenlicht [b251] ↗
/flashfilme.htmlDas Periodensystem der Elemente [b122] ↗
/flashfilme.htmlLernprogramm: Von der Pflanze zum Fotosystem [b252] ↗
/flashfilme.htmlKreuzworträtsel zum PSE [b123] ↗
/flashfilme.htmlDie Oberflächenspannung des Wassers [099] ↗
/flashfilme.htmlPhenolphthalein - zwei Gesichter [b200] ↗
/flashfilme.htmlRaktionsgleichung zur NaCl-Synthese mit Modellen aufstellen [b302] ↗
/flashfilme.htmlStreuversuch von Rutherford [b110] ↗
/flashfilme.htmlLerngeschichte zur NaCl-Synthese am Schalenmodell [b301] ↗
/flashfilme.htmlDer Schmelzvorgang von Eis [b097] ↗
/flashfilme.htmlVirtuelle Ermittlung einer Spannungsreihe [b175] ↗
/flashfilme.htmlStromleitung in Metallen, Lösungen und Halbleitern [b160] ↗
/flashfilme.htmlStromleitung in Metallen [b161] ↗
/flashfilme.htmlStromleitung in Lösungen [b162] ↗
/flashfilme.htmlStromleitung in Halbleitern [b163] ↗
/flashfilme.htmlLernprogramm: Stromleitung in Wasser [b164] ↗
/flashfilme.htmlRundgang durch eine Tropfssteinhöhle [b210] ↗
/flashfilme.htmlVerbrennung von Eisenwolle (Teilchenmodell) [b142] ↗
/flashfilme.htmlVerbrennung von Holz (Teilchenmodell) [b143] ↗
/flashfilme.htmlWasser im Teilchenmodell [b106] ↗
/flashfilme.htmlZink-Kohle-Batterie - chemische Abläufe [b174] ↗
/information.htmlEntwicklung der Multimedia-Bausteine
/information.htmlVon Flash zu HTML5
/information.htmlBausteine im Unterricht
/information.htmlAnimationen im Unterricht
/information.htmlOnline oder Offline

Server configuration

HTTP redirects
(Critically important)
This page redirects to ""
HTTP header
The HTML page should be transferred using GZip compression.
No X-Powered HTTP header is sent.
(Somewhat important)
The page response time is excellent with 0.23 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 (19 kB).

HTTP Response Header

dateSat, 19 Jun 2021 01:29:22 GMT
last-modifiedThu, 10 Jun 2021 21:07:14 GMT
serverCM4all Webserver

External factors

(Critically important)
This website is not classified "for adult only".
This website is not listed on the Shallalist.
This website has excellent links from other websites.
This page has backlinks from 219 referring domains.
This page has 3,021 backlinks.
This page has backlinks from 159 different ip addresses.
Facebook popularity
(Somewhat important)
This page is not very popular on facebook.
Listed on Webwiki
(Nice to have)
This website is listed on Webwiki.

Links from Wikipedia

No links from Wikipedia were found.

Search preview [Siences interactive]
Eine Sammlung von interaktiven Animationen, Simulationen und Videofilmen für den Chemieunterricht und Biologieunterricht.

Most important keywords

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

Animationen im54%Check
im Unterricht54%Check
im Browser44%Check

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