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
0.17 s
File size
174.80 kB
Words
732
Media files
27
Number of links
53 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: en
Language defined in HTML: en
Server location: United States of America
The following language is defined by HTML: en
Alternate/Hreflang Links
(Somewhat important)
The alternate link to the page itself is invalid.
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
langen
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.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.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 732 words. That's ok.
26.6% of the text are stop words.
10 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 17.8 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 15 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
...images/en-resources/Number_sense_1x.webpNumber Sense
...ader-images/en-resources/Algebra_1x.webpAlgebra
...der-images/en-resources/Geometry_1x.webpGeometry
...-images/en-resources/Measurement_1x.webpMeasurement
...r-images/en-resources/Operations_1x.webpOperations
...urces/Probability_and_Statistics_1x.webpProbability and Statistics
...images/en-resources/Number_sense_1x.webpNumber Sense
...ader-images/en-resources/Algebra_1x.webpAlgebra
...der-images/en-resources/Geometry_1x.webpGeometry
...-images/en-resources/Measurement_1x.webpMeasurement
...r-images/en-resources/Operations_1x.webpOperations
...urces/Probability_and_Statistics_1x.webpProbability and Statistics
...mages/hero-images/HeroImageMedium2x.webpIllustration where students and teacher are interacting with a GeoGebra Math App
.../MathResources/MathResourcesLarge1x.webpicon showing a tablet with a triangle, plus and circle floating in front
...-icons/Calculator/CalculatorLarge1x.webpicon showing a minus, plus, times (and hidden divide) in a grid with an equals floating over
...ns/ClassroomCollab/ClassroomLarge1x.webpicon showing stylized teacher and 2 students with joined speech bubble (to show they are discussing)
...ns/MathPractice/MathPracticeLarge1x.webpCircle split into four puzzle pieces, two are blank and the others are the letter X and a question mark
...assets/images/testimonials/peter_2x.webpProfile Picture
...ssets/images/testimonials/steven_2x.webpProfile Picture
...assets/images/testimonials/irina_2x.webpProfile Picture
...assets/images/testimonials/maria_2x.webpProfile Picture
...assets/images/testimonials/nancy_2x.webpProfile Picture
...ets/images/GGBTeam/TeamPhotoLarge2x.webpPhotograph of the GeoGebra Team
Video URLWidthHeight
.../assets/animations/animation_applet.webm
...ets/animations/animation_calculator.webm
...sets/animations/animation_classroom.webm
.../animations/animation_math_practice.webm

Page structure

H1 heading
(Critically important)
Teach and learn math in a smarter way
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 Teach and learn math in a smarter way
H2 Trusted by millions of teachers and students worldwide
H2 Make math interactive
H2 Explore math with free calculators
H2 Engage every student
H2 Solve problems step-by-step
H2 Our mission
H2 Get started using GeoGebra today
H4 Teachers & Students
H4 Teachers & Students Duplicate text
H4 Teachers
H4 Teachers & Students 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/Subdomain No Text
/math/number-senseNumber Sense Understanding numbers, their relationships and numerical reasoning
IMG-ALT Number Sense
/math/algebraAlgebra Using symbols to solve equations and express patterns
IMG-ALT Algebra
/math/geometryGeometry Studying shapes, sizes and spatial relationships in mathematics
IMG-ALT Geometry
/math/measurementMeasurement Quantifying and comparing attributes like length, weight and volume
IMG-ALT Measurement
/math/operationsOperations Performing mathematical operations like addition, subtraction, division
IMG-ALT Operations
/math/statistics-probabilityProbability and Statistics Analyzing uncertainty and likelihood of events and outcomes
IMG-ALT Probability and Statistics
/materialsCommunity Resources
https://help.geogebra.org/hc/e...External Subdomain Get started with our Resources
/calculatorCalculator Suite Exploring functions, solving equations, constructing geometric shapes
https://www.geogebra.org/graphingGraphing Calculator Visualizing equations and functions with interactive graphs and plots
https://www.geogebra.org/geometryGeometry Exploring geometric concepts and constructions in a dynamic environment
https://www.geogebra.org/3d3D Calculator Graphing functions and performing calculations in 3D
/scientificScientific Calculator Performing calculations with fractions, statistics and exponential functions
https://www.geogebra.org/notesNotes Exploring apps bundle including free tools for geometry, spreadsheet and CAS
https://www.geogebra.org/downloadApp Downloads
https://help.geogebra.org/hc/e...External Subdomain Get started with the GeoGebra Apps
/math/number-senseText duplicate Number Sense Understanding numbers, their relationships and numerical reasoning
IMG-ALT Number Sense
/math/algebraText duplicate Algebra Using symbols to solve equations and express patterns
IMG-ALT Algebra
/math/geometryText duplicate Geometry Studying shapes, sizes and spatial relationships in mathematics
IMG-ALT Geometry
/math/measurementText duplicate Measurement Quantifying and comparing attributes like length, weight and volume
IMG-ALT Measurement
/math/operationsText duplicate Operations Performing mathematical operations like addition, subtraction, division
IMG-ALT Operations
/math/statistics-probabilityText duplicate Probability and Statistics Analyzing uncertainty and likelihood of events and outcomes
IMG-ALT Probability and Statistics
/materialsText duplicate Community Resources
https://help.geogebra.org/hc/e...External Subdomain Text duplicate Get started with our Resources
/calculatorText duplicate Calculator Suite Exploring functions, solving equations, constructing geometric shapes
https://www.geogebra.org/graphingText duplicate Graphing Calculator Visualizing equations and functions with interactive graphs and plots
https://www.geogebra.org/geometryText duplicate Geometry Exploring geometric concepts and constructions in a dynamic environment
https://www.geogebra.org/3dText duplicate 3D Calculator Graphing functions and performing calculations in 3D
/scientificText duplicate Scientific Calculator Performing calculations with fractions, statistics and exponential functions
https://www.geogebra.org/notesText duplicate Notes Exploring apps bundle including free tools for geometry, spreadsheet and CAS
https://www.geogebra.org/downloadText duplicate App Downloads
https://help.geogebra.org/hc/e...External Subdomain Text duplicate Get started with the GeoGebra Apps
/calculatorSubdomain Start Calculator
https://www.geogebra.org/mathSubdomain Math Resources
/math/number-senseSubdomain Number Sense
/math/operationsSubdomain Operations
/math/algebraSubdomain Algebra
/math/measurementSubdomain Measurement
/math/geometrySubdomain Geometry
/math/statistics-probabilitySubdomain Probability and Statistics
https://www.geogebra.org/mathSubdomain Explore all
https://www.geogebra.org/downloadSubdomain Text duplicate Explore all
https://help.geogebra.org/hc/e...External Subdomain Learn more
/mathpracticeSubdomain Try out
https://www.geogebra.org/mathSubdomain Explore Resources
/calculatorSubdomain Text duplicate Start Calculator
https://help.geogebra.org/hc/e...External Subdomain Explore Classroom
/mathpracticeSubdomain Explore Math Practice
https://www.geogebra.org/aboutSubdomain About us
https://accounts.geogebra.org/...External Subdomain Create an Account
https://www.geogebra.org/Subdomain No Text
https://www.geogebra.org/aboutSubdomain About
https://www.geogebra.org/partnersSubdomain Partners
https://help.geogebra.org/hc/e...External Subdomain Help Center
https://www.geogebra.org/tosSubdomain Terms of Service
https://www.geogebra.org/privacySubdomain Privacy
https://www.geogebra.org/licenseSubdomain License
https://www.geogebra.org/graphingSubdomain Graphing Calculator
/calculatorSubdomain Calculator Suite
https://www.geogebra.org/mathSubdomain Text duplicate Math Resources
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 0.17 seconds.
The file size of the HTML document is fine (175 kB).

HTTP Response Header

NameValue
content-typetext/html; charset=utf-8
serverCloudFront
dateMon, 17 Jun 2024 22:15:17 GMT
cache-controlpublic, s-maxage=86400, stale-while-revalidate=86400
last-modifiedMon, 03 Jun 2024 12:15:02 GMT
x-debugcookie=[null,null]|param=[null,null]|header=["en"] => en
content-encodinggzip
varyAccept-Encoding
x-cacheRefreshHit from cloudfront
via1.1 6b15a9d1514a5645abfd43cbf330ce48.cloudfront.net (CloudFront)
x-amz-cf-popFRA56-P9
alt-svch3=":443"; ma=86400
x-amz-cf-idwp17uXkldeFg2jl8sIrIsEJIMb3z61798vBhUcBRrrRsLi-y7jMvFQ==
age142846
statuscode200
http_versionHTTP/2

External factors

Blacklists
(Nice to have)
This website is not classified "for adult only".
This page is referenced by wikipedia.
This website has excellent links from other websites.
This page has backlinks from 15,011 referring domains.
This page has 1,344,309 backlinks.
This page has backlinks from 9,702 different ip addresses.
Facebook popularity
(Somewhat important)
The page has 0 shares and comments on Facebook.

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
math68%Check
Free Math67%Check
GeoGebra65%Check
free62%Check
Teachers and Students60%Check
free tools58%Check
tools56%Check
free math tools used56%Check
students55%Check
Explore math54%Check
Show more keywords and terms

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