Brilliant.org - SEO Checker

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Overview of the SEO Check
Meta information
100% 
Page quality
58% 
Page structure
79% 
Link structure
97% 
Server
70% 
External factors
100% 
SEO Score
Response time
0.88 s
File size
242.80 kB
Words
239
Media files
13
Number of links
18 internal / 12 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Brilliant | Learn by doing
The length of the page title is perfect. (215 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Get smarter in 15 minutes a day with thousands of interactive, bite-sized lessons in math, science, data analysis, programming, computer science, AI, and beyond.
The length of the meta description is perfect. (999 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://brilliant.org/
There is a valid canonical link specified.
Language
(Somewhat important)
Language detected in text: en
Language defined in HTML: en
Server location: Canada
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)
The favicon is linked correctly.

Meta tags

NameValue
viewportwidth=device-width,initial-scale=1.0,viewport-fit=cover
descriptionGet smarter in 15 minutes a day with thousands of interactive, bite-sized lessons in math, science, data analysis, programming, computer science, AI, and beyond.
next-head-count28
al:ios:urlcom.brilliant.Brilliant://
al:ios:app_store_id913335252
al:ios:app_nameBrilliant.org
al:android:urlhttps://brilliant.org/
al:android:packageorg.brilliant.android
al:android:app_nameBrilliant
langen
twitter:site@brilliantorg
twitter:cardsummary_large_image
og:descriptionGet smarter in 15 minutes a day with thousands of interactive, bite-sized lessons in math, science, data analysis, programming, computer science, AI, and beyond.
og:titleBrilliant | Learn by doing
og:imagehttps://brilliant.org/images/opengraph/learn-interactively.png
og:urlhttps://brilliant.org
og:typewebsite
charsetutf-8

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Page quality

Content
(Critically important)
There are only 239 words on this page. Use at least 250 words to provide useful information.
Some words from the page title are not used within the pages content
Only 2 paragraph/s was/were found on this page.
The average number of words per sentence of 7.5 words is low.
25.9% of the text are stop words.
No placeholders texts or images were found.
There are no duplicates on the site.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "width=device-width,initial-scale=1.0,viewport-fit=cover" is provided.
At least one Apple touch icon is specified.
Bold and strong tags
(Somewhat important)
The usage of strong and bold tags is perfect. We recommend the use of up to 6 tags for this page.
Image SEO
(Somewhat important)
Alt text (alternative text) is correctly used on all found images.
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
/images/homepage/learn-by-doing.pngLearn by doing
/images/paywall/new-york-times.pngThe New York Times
/images/paywall/the-atlantic-long.pngThe Atlantic
/images/homepage/app-of-the-day.pngApp of the Day
...paywall/courses/solving-equations-v2.svgSolving Equations
...es/paywall/courses/visual-algebra-v2.svgVisual Algebra
...aywall/courses/real-world-algebra-v2.svgReal World Algebra
...wall/courses/graphs-and-functions-v2.svgGraphs and Functions
...ourses/geometry-and-trigionometry-v2.svgGeometry and Trigonometry
...ourses/vectors-and-linear-algebra-v2.svgVectors and Linear Algebra
...auto/images/paywall/courses/calculus.svgCalculus
Video URLWidthHeight
/videos/homepage/learn-by-doing.webm
/videos/homepage/courses/math.webm

Page structure

H1 heading
(Critically important)
There is no H1 heading specified.
Headings
(Important)
The structure of headings is missing one or more levels. Do not skip heading levels.

Heading structure

Heading levelContent
H2 Join over 10 million learners worldwide
H2 Concepts that click
H2 Learn at your level
H2 Stay motivated
H2 Guided bite-sized lessons
H2 More effective. More fun.
H2 Designed by experts
H2 Guided paths for every journey
H2 Start your journey
H3 Math Courses
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 12 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://brilliant.org/No Text
https://brilliant.org/login/Log in
https://brilliant.org/No Text
https://brilliant.org/login/Text duplicate Log in
https://brilliant.org/welcome/Get started
https://brilliant.org/welcome/Text duplicate Get started
https://brilliant.org/welcome/Text duplicate Get started
https://apps.apple.com/app/app...New window External Subdomain Download on the App Store
https://play.google.com/store/...New window External Subdomain Get it on Google Play
https://brilliant.org/No Text
https://brilliant.org/courses/Courses
https://brilliant.org/subscribe/Pricing
/gift-premium/Gift Brilliant
https://brilliant.org/help/Help
https://brilliant.org/about/About us
https://brilliant.org/careers/Careers
https://brilliant.org/educators/Educators
https://blog.brilliant.org/han...External Subdomain AI at Brilliant
https://blog.brilliant.org/whe...External Subdomain AI Evals for Learning Games
https://blog.brilliant.org/sol...External Subdomain Solving Equations
https://blog.brilliant.org/thi...External Subdomain Thinking in Code
https://blog.brilliant.org/vis...External Subdomain Visual Algebra
https://blog.brilliant.org/dec...External Subdomain Decomposition and Abstraction
https://www.facebook.com/brill...New window External Subdomain No Text
https://www.instagram.com/bril...New window External Subdomain No Text
https://twitter.com/brilliantorgNew window External No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
/terms-of-use/Terms of service
https://brilliant.org/privacy/Privacy policy
/ccpa-policy/California privacy policy

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://brilliant.org/"
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 of 0.88 seconds is longer than the recommended limit of 0.4 seconds. A high response time unnecessarily slows down search engine crawling and results in bad user experience as well.
The file size of the HTML document is fine (243 kB).

HTTP Response Header

NameValue
dateWed, 11 Jun 2025 03:21:37 GMT
content-typetext/html; charset=utf-8
x-frame-optionsSAMEORIGIN
set-cookie131 Characters
x-powered-byNext.js
cache-controlprivate, no-cache, no-store, max-age=0, must-revalidate
varyAccept-Encoding
x-envoy-upstream-service-time227
cf-cache-statusDYNAMIC
strict-transport-securitymax-age=15552000
servercloudflare
cf-ray94ddfab889ecf3ca-CDG
content-encodinggzip
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 1,822 referring domains.
This page has 16,733 backlinks.
This page has backlinks from 1,378 different ip addresses.

Links from Wikipedia

You can find more links using Wikipedia search

Robots.txt

#Google Search Engine Robot
User-agent: Googlebot
Disallow: /profile/*/followers
Disallow: /profile/*/following
Disallow: /account/*
Disallow: /classroom/
Disallow: /testing/*

#Yahoo! Search Engine Robot
User-Agent: Slurp
Disallow: /profile/*/followers
Disallow: /profile/*/following
Disallow: /account/*
Disallow: /classroom/
Disallow: /testing/*

#Yandex Search Engine Robot
User-agent: Yandex
Disallow: /profile/*/followers
Disallow: /profile/*/following
Disallow: /account/*
Disallow: /classroom/
Disallow: /testing/*

#Microsoft Search Engine Robot
User-Agent: msnbot
Disallow: /profile/*/followers
Disallow: /profile/*/following
Disallow: /account/*
Disallow: /classroom/
Disallow: /testing/*

#Every bot that might possibly read and respect this file.
User-agent: *
Disallow: /profile/*/followers
Disallow: /profile/*/following
Disallow: /account/*
Disallow: /classroom/
Disallow: /testing/*

#Sitemap
Sitemap: https://brilliant.org/sitemapindex.xml

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Search preview

brilliant.org
Brilliant | Learn by doing
Get smarter in 15 minutes a day with thousands of interactive, bite-sized lessons in math, science, data analysis, programming, computer science, AI, and beyond.

Most important keywords

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

KeywordResultRecheck
Brilliant58%Check
Learn58%Check
lessons50%Check
day50%Check
Math50%Check
bite-sized50%Check
bite-sized lessons50%Check
Brilliant Worldwide48%Check
Get46%Check
Interactive46%Check
Show more keywords and terms

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