Mathinsight.org - SEO Checker

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Overview of the SEO Check
Meta information
79% 
Page quality
68% 
Page structure
74% 
Link structure
100% 
Server
69% 
External factors
100% 
SEO Score
Response time
1.04 s
File size
12.30 kB
Words
385
Media files
2
Number of links
29 internal / 4 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Math Insight
The page title is too short. (109 pixels of 580 max pixel length) Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
A web site dedicated to illustrating underlying concepts of a few topics in mathematics.
The length of the meta description is perfect. (530 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
No canonical link is 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)
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)
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=1.0
descriptionA web site dedicated to illustrating underlying concepts of a few topics in mathematics.
langen
charsetutf-8

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Page quality

Content
(Critically important)
There are only 385 words on this page. Good pages should have about 800 words of useful content.
35.1% 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.
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 17.22 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
No Apple touch icon is specified.
This page loads 7 JavaScript files. This may affect the load time negatively.
A viewport "width=device-width, initial-scale=1.0" is provided.
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)
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
...applet/image/small/undamped_pendulum.pngUndamped pendulum
...small/cartesian_coordinates_point_3d.pngCartesian coordinates of a point in three dimensions

Page structure

H1 heading
(Critically important)
Math Insight
The H1 heading is too short (12 characters). It should be at least 20 Characters long.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H1 Math Insight
H3 Highlighted pages
H3 Recent pages
H3 Highlighted applets
H3 Welcome to Math Insight
The number of internal links is ok.
Every linktext is unique.
None of the anchor texts is too long.
All internal links are not using dynamic parameters.
There are 4 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://mathinsight.org/Anchor Skip to navigation (Press Enter)
https://mathinsight.org/Anchor Skip to main content (Press Enter)
https://mathinsight.org/Home
/thread/listThreads
/index/generalIndex
/about/mathinsightAbout
https://mathinsight.org/Anchor Top
https://mathinsight.org/Anchor Highlighted pages
https://mathinsight.org/Anchor Recent pages
https://mathinsight.org/Anchor Highlighted applets
https://mathinsight.org/Anchor Welcome
https://www.doenet.org/External Subdomain No Text
/differentiability_multivariab...Subtleties of differentiability in higher dimensions
A-TITLE Subtleties of differentiability in higher dimensions: A description of some of the tricky ways where a function of multiple variables can fail to be differen...
/stokes_theorem_ideaThe idea behind Stokes' theorem
A-TITLE The idea behind Stokes' theorem: Introduction to Stokes' theorem, based on the intuition of microscopic and macroscopic circulation of a vector field and ill...
/conservative_vector_field_int...An introduction to conservative vector fields
A-TITLE An introduction to conservative vector fields: An introduction to the concept of path-independent or conservative vector fields, illustrated by interactive g...
/divergence_ideaThe idea of the divergence of a vector field
A-TITLE The idea of the divergence of a vector field: Intuitive introduction to the divergence of a vector field. Interactive graphics illustrate basic concepts.
https://mathinsight.org/curl_ideaThe idea of the curl of a vector field
A-TITLE The idea of the curl of a vector field: Intuitive introduction to the curl of a vector field. Interactive graphics illustrate basic concepts.
/birth_death_processA birth-death process
A-TITLE A birth-death process:
/stochastic_process_introductionA stochastic process introduction
A-TITLE A stochastic process introduction:
/neural_coding_and_decodingAn introduction to neural coding and decoding
A-TITLE An introduction to neural coding and decoding:
/about/new_summaryMore new items
/applet/undamped_pendulumIMG-ALT Undamped pendulum
/applet/undamped_pendulumApplet: Undamped pendulum
/applet/cartesian_coordinates_...IMG-ALT Cartesian coordinates of a point in three dimensions
/applet/cartesian_coordinates_...Applet: Cartesian coordinates of a point in three dimensions
/thread/listthreads
/index/generalindex
https://mathinsight.org/search/search
/about/notationsystemsnotation system
/about/contactwelcome comments
http://www.yaml.de/External Subdomain YAML
http://www.djangoproject.com/External Subdomain Django
http://www.mathjax.org/External Subdomain MathJax

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://mathinsight.org/"
HTTP header
(Important)
The web server version is sent within the HTTP header.
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 slow (1.04 seconds). The response time should be less than 0.4 seconds. Slow websites are bad for search engine bots and also result in bad user experience.
This page loads 7 JavaScript files. This may affect the load time negatively.
This page only loads 2 CSS files. That's ok.
The file size of the HTML document is fine (12 kB).

HTTP Response Header

NameValue
dateSun, 20 Jul 2025 19:30:47 GMT
serverApache/2.4.29 (Ubuntu)
x-frame-optionsSAMEORIGIN
varyCookie,Accept-Encoding
last-modifiedThu, 14 Apr 2022 03:19:55 GMT
content-encodinggzip
content-length3922
content-typetext/html; charset=utf-8
via1.1 mathinsight.org
statuscode200
http_versionHTTP/1.1

External factors

This website has excellent links from other websites.
This page has backlinks from 144 referring domains.
This page has 286 backlinks.
This page has backlinks from 123 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

No valid Robots.txt file was found.

Similar sites

Search preview

mathinsight.org
Math Insight
A web site dedicated to illustrating underlying concepts of a few topics in mathematics.

Most important keywords

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

KeywordResultRecheck
Math89%Check
Math Insight83%Check
Insight77%Check
concepts46%Check
web46%Check
site46%Check
topics46%Check
mathematics46%Check
Web Site46%Check
underlying46%Check
Show more keywords and terms

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