Geogebra.org - SEO Checker

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Overview of the SEO Check
Meta information
67% 
Page quality
65% 
Page structure
71% 
Link structure
86% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.10 s
File size
186.50 kB
Words
715
Media files
15
Number of links
47 internal / 14 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
GeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers
The page title should be shorter than 580 pixels. It is 855 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Free digital tools for class activities, graphing, geometry, collaborative whiteboard and more
The length of the meta description is perfect. (563 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://www.geogebra.org/
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 alternate link to the page itself is invalid.
A country is specified wrong in alternate links: mn-mong
A country is specified wrong in alternate links: ca-xv
An URL is specified multiple times in alternate links.
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)
No favicon is linked in the HTML code.

Meta tags

NameValue
viewportwidth=device-width, initial-scale=1
descriptionFree digital tools for class activities, graphing, geometry, collaborative whiteboard and more
robotsall
apple-itunes-appapp-id=1146717204
langde
twitter:cardsummary_large_image
twitter:titleGeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers
twitter:descriptionFree digital tools for class activities, graphing, geometry, collaborative whiteboard and more
twitter:imagehttps://www.geogebra.org/sp-assets/assets/images/ogImage.c3863704.png
twitter:image:width200
twitter:image:height200
twitter:image:altGeoGebra Logo
fb:app_id185307058177853
og:titleGeoGebra - the world’s favorite, free math tools used by over 100 million students and teachers
og:descriptionFree digital tools for class activities, graphing, geometry, collaborative whiteboard and more
og:urlhttps://www.geogebra.org
og:site_nameGeoGebra
og:imagehttps://www.geogebra.org/sp-assets/assets/images/ogImage.c3863704.png
og:image:width200
og:image:height200
og:image:altGeoGebra Logo
og:typewebsite
charsetutf-8

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Page quality

Content
(Critically important)
Some words from the page title are not used within the pages content
Words from the H1 heading are not used in the page content.
This page contains 715 words. That's ok.
31.3% of the text are stop words.
13 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 15.15 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" is provided.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 14 tags for this page.
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.
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
...o-images/HeroImageMedium2x.642ea284.webpIllustration, in der Lehrende und Lernende mit einer GeoGebra Mathe App interagieren
...urces/MathResourcesLarge1x.597df6f6.webpIllustration, bestehend aus Tablet, mit Dreieck, Pluszeichen und Kreis im Vordergrund
...lculator/CalculatorLarge1x.801e83e4.webpIllustration, die die vier Grundrechenarten und ein Gleichheitszeichen anzeigt (wobei das Divisionszeichen verdeckt wird)
...oomCollab/ClassroomLarge1x.285e1fcf.webpIllustration mit Lehrende und Lernenden, verbunden mit einer Sprechblase (um Diskussion zu zeigen)
...actice/MathPracticeLarge1x.734a1c22.webpKreis, geteilt in vier Teile. Zwei sind leer, die anderen beiden zeigen X und ein Fragezeichen
...ages/testimonials/karin_2x.2b8df318.webpProfilbild
...images/testimonials/Eva_2x.66565057.webpProfilbild
...es/testimonials/Andreas_2x.c421c143.webpProfilbild
...ages/testimonials/armin_2x.8a254b68.webpProfilbild
...ges/testimonials/hubert_2x.a3e298c2.webpProfilbild
...s/GGBTeam/TeamPhotoLarge2x.07bba83d.webpFoto des GeoGebra Teams
Video URLWidthHeight
...nimations/animation_applet.608c77a7.webm
...tions/animation_calculator.7e92d5a8.webm
...ations/animation_classroom.6b2cbbb3.webm
...ns/animation_math_practice.0a9fa687.webm

Page structure

H1 heading
(Critically important)
Unterrichte und lerne Mathe effektiv
The H1 heading is perfect.
Headings
(Important)
Some headings occur twice on the page.
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Unterrichte und lerne Mathe effektiv
H2 Benutzt von Millionen Lehrenden und Lernenden weltweit - auch aus deiner Umgebung
H2 Erlebe Mathematik interaktiv
H2 Erforsche Mathematik mit gratis Apps
H2 Aktiviere jeden Schüler
H2 Löse Probleme schrittweise
H2 Unsere Mission
H2 Starte heute noch mit GeoGebra
H4 Lehrende & Lernende
H4 Lehrende & Lernende Duplicate text
H4 Lehrende
H4 Lehrende & Lernende Duplicate text
Some anchor texts are used more than once.
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 14 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://www.geogebra.org/No Text
/t/geometryGeometrie Studiere Formen, Größen und räumliche Beziehungen in der Mathematik
/t/functionsFunktionen Beziehungen, die Eingaben bestimmten Ausgaben in der Mathematik zuordnen
/t/calculusAnalysis Untersuche Folgen und Reihen, löse Differentialgleichungen
/t/trigonometryTrigonometrie Untersuche Winkel, Dreiecke sowie trigonometrische Funktionen und Verhältnisse
/t/algebraAlgebra Löse mithilfe von Symbolen Gleichungen und finde Muster heraus
/t/arithmeticArithmetik Übe grundlegende Operationen wie Additionen, Subtraktionen und Divisionen
/materialsAlle Unterrichtsmaterialien
https://help.geogebra.org/hc/d...External Subdomain Starte mit unseren Materialien
/calculatorRechner Suite Erforsche Funktionen, löse Gleichungen, konstruiere geometrische Formen
https://www.geogebra.org/graphingGrafikrechner Visualisiere Gleichungen und Funktionen mit interaktiven Diagrammen und Plots
https://www.geogebra.org/geometryGeometrie Erforsche geometrische Konzepte und Konstruktionen in einer dynamischen Umgebung
https://www.geogebra.org/3d3D Rechner Stelle Funktionen grafisch dar und führe Berechnungen in 3D durch
/scientificTaschenrechner Führe Berechnungen mit Brüchen, Statistiken und Exponentialfunktionen durch
https://www.geogebra.org/notesNotizen Erkunde die online Notizen-App mit interaktiven Graphen, Bildern, Videos, und mehr
https://www.geogebra.org/downloadApps herunterladen
https://help.geogebra.org/hc/d...External Subdomain Starte mit den GeoGebra Apps
/t/geometryText duplicate Geometrie Studiere Formen, Größen und räumliche Beziehungen in der Mathematik
/t/functionsText duplicate Funktionen Beziehungen, die Eingaben bestimmten Ausgaben in der Mathematik zuordnen
/t/calculusText duplicate Analysis Untersuche Folgen und Reihen, löse Differentialgleichungen
/t/trigonometryText duplicate Trigonometrie Untersuche Winkel, Dreiecke sowie trigonometrische Funktionen und Verhältnisse
/t/algebraText duplicate Algebra Löse mithilfe von Symbolen Gleichungen und finde Muster heraus
/t/arithmeticText duplicate Arithmetik Übe grundlegende Operationen wie Additionen, Subtraktionen und Divisionen
/materialsText duplicate Alle Unterrichtsmaterialien
https://help.geogebra.org/hc/d...External Subdomain Text duplicate Starte mit unseren Materialien
/calculatorText duplicate Rechner Suite Erforsche Funktionen, löse Gleichungen, konstruiere geometrische Formen
https://www.geogebra.org/graphingText duplicate Grafikrechner Visualisiere Gleichungen und Funktionen mit interaktiven Diagrammen und Plots
https://www.geogebra.org/geometryText duplicate Geometrie Erforsche geometrische Konzepte und Konstruktionen in einer dynamischen Umgebung
https://www.geogebra.org/3dText duplicate 3D Rechner Stelle Funktionen grafisch dar und führe Berechnungen in 3D durch
/scientificText duplicate Taschenrechner Führe Berechnungen mit Brüchen, Statistiken und Exponentialfunktionen durch
https://www.geogebra.org/notesText duplicate Notizen Erkunde die online Notizen-App mit interaktiven Graphen, Bildern, Videos, und mehr
https://www.geogebra.org/downloadText duplicate Apps herunterladen
https://help.geogebra.org/hc/d...External Subdomain Text duplicate Starte mit den GeoGebra Apps
/calculatorSubdomain Starte Rechner
/materialsSubdomain Unterrichtsmaterialien
/materialsSubdomain Alles entdecken
https://www.geogebra.org/downloadSubdomain Text duplicate Alles entdecken
https://help.geogebra.org/hc/d...External Subdomain Lerne mehr
/mathpracticeSubdomain Versuche es
/materialsSubdomain Materialien erkunden
/calculatorSubdomain Text duplicate Starte Rechner
https://help.geogebra.org/hc/d...External Subdomain Entdecke Classroom
/mathpracticeSubdomain Erkunde Math Practice
https://www.geogebra.org/aboutSubdomain Über uns
https://accounts.geogebra.org/...External Subdomain Erstelle einen Account
https://www.geogebra.org/Subdomain No Text
https://www.geogebra.org/aboutSubdomain Info
https://www.geogebra.org/partnersSubdomain Partner
https://help.geogebra.org/hc/deExternal Subdomain Hilfe-Center
https://www.geogebra.org/tosSubdomain Nutzungsbedingungen
https://www.geogebra.org/privacySubdomain Privatsphäre
https://www.geogebra.org/licenseSubdomain Lizenz
https://www.geogebra.org/graphingSubdomain Grafikrechner
/calculatorSubdomain Rechner Suite
/materialsSubdomain Text duplicate Unterrichtsmaterialien
https://apps.apple.com/us/deve...External Subdomain No Text
https://play.google.com/store/...External Subdomain No Text
https://www.youtube.com/user/G...New window External Subdomain A-TITLE Youtube
https://www.instagram.com/geog...New window External Subdomain A-TITLE Instagram
https://twitter.com/geogebraNew window External A-TITLE Twitter
https://www.facebook.com/geogebraNew window External Subdomain A-TITLE Facebook

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://www.geogebra.org/"
HTTP header
(Important)
No X-Powered HTTP header is sent.
This page uses GZip for compressed data transmission.
Performance
(Somewhat important)
The page response time is excellent with 0.10 seconds.
The file size of the HTML document is fine (187 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
serverCloudFront
dateWed, 05 Feb 2025 09:41:09 GMT
cache-controlpublic, s-maxage=31536000, max-age=0
etagW/"ibZF7Yjf2gc0jLSnEuOKxxjg9aU="
x-debugparam=[null,null]|cookie=[null,null]|header=["de","en"] => de
content-encodinggzip
varyAccept-Encoding
x-cacheMiss from cloudfront
via1.1 e47c87f8fd9c4c08ac7559d0bcc2b4c2.cloudfront.net (CloudFront)
x-amz-cf-popFRA56-P9
alt-svch3=":443"; ma=86400
x-amz-cf-id09vWfkkKH5cwJ6yMyEqUDtPy24pIeGihzddQBKwGAd70tzCeH14p-g==
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 15,724 referring domains.
This page has 1,113,878 backlinks.
This page has backlinks from 9,870 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

User-agent: *
Disallow:
Sitemap: https://www.geogebra.org/m-sitemap-index.xml
Sitemap: https://www.geogebra.org/math-sitemap.xml
Sitemap: https://www.geogebra.org/special-sitemap.xml
Sitemap: https://www.geogebra.org/t-sitemap.xml
Sitemap: https://www.geogebra.org/u-sitemap.xml

Similar sites

Search preview

www.geogebra.org
GeoGebra - the world’s favorite, free math tools used by over 100 m...
Free digital tools for class activities, graphing, geometry, collaborative whiteboard and more

Most important keywords

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

KeywordResultRecheck
GeoGebra63%Check
Math54%Check
Math Practice53%Check
GeoGebra Apps51%Check
Unterricht50%Check
Unterrichte50%Check
effektiv50%Check
Free Math48%Check
Million45%Check
Lernende44%Check
Show more keywords and terms

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