Happynumbers.com - SEO Checker

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Overview of the SEO Check
Meta information
77% 
Page quality
81% 
Page structure
100% 
Link structure
88% 
Server
86% 
External factors
69% 
SEO Score
Response time
1.27 s
File size
55.60 kB
Words
688
Media files
29
Number of links
27 internal / 9 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Math Centers that Deliver — Differentiation Done Right | HappyNumbers.com
The page title should be shorter than 580 pixels. It is 691 pixels long. Optimize title
There are no duplicate words in the title
Meta description
(Critically important)
Math Centers that Deliver — Differentiation Done Right | HappyNumbers.com
The length of the meta description is perfect. (691 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)
There should not be dynamic parameters 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,user-scalable=no
format-detectiontelephone=no
facebook-domain-verificationped12a4sv8uu9joyewvztt09lcakba
descriptionMath Centers that Deliver — Differentiation Done Right | HappyNumbers.com
langen
twitter:cardsummary_large_image
twitter:imagehttps://static.happynumbers.com/main-page/preview.png
twitter:site@happynumbers
twitter:site:id1548372793
twitter:creator@happynumbers
twitter:domainhappynumbers.com
twitter:titleMath Centers that Deliver — Differentiation Done Right | HappyNumbers.com
twitter:descriptionWhile you teach small groups, Happy Numbers serves as an independent math center, providing individualized instruction for the rest of the class.
twitter:image:altMath Centers that Deliver — Differentiation Done Right | HappyNumbers.com
og:site_nameHappyNumbers.com
og:urlhttps://happynumbers.com/
og:typewebsite
og:titleMath Centers that Deliver — Differentiation Done Right | HappyNumbers.com
og:descriptionWhile you teach small groups, Happy Numbers serves as an independent math center, providing individualized instruction for the rest of the class.
charsetutf-8

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Page quality

Content
(Critically important)
Words from the H1 heading are not used in the page content.
This page contains 688 words. That's ok.
36.3% of the text are stop words.
Keywords used in the page title are also used in the page content. That's good!
The page contains a listing, which indicates a good text layout.
12 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 20.09 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
Multiple viewport tags are given. There should only be one.
No Apple touch icon is specified.
A viewport "width=device-width,user-scalable=no" is provided.
This page does not require any JavaScript files.
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)
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
...aws.com/happy-banners/EarlyBird/1440.svgbanner
...bers.com/teachers/headers/happy-logo.svglogo
...com/teachers/main-page/home-image-bg.svghome background
...chers/main-page/home-image-bg-mobile.svghome background mobile
...ws.com/teachers/main-page/home-image.svghome
...teachers/main-page/home-image-mobile.svghome mobile
...aws.com/teachers/main-page/essa-logo.pngessa-logo
...mazonaws.com/teachers/main-page/soc2.pngsoc2-logo
...ws.com/teachers/main-page/ferpa-logo.pngferpa-logo
...om/teachers/main-page/classlink-logo.svgclasslink-logo
...s.com/teachers/main-page/clever-logo.svgclever-logo
...teachers/main-page/college-readiness.svgcollege-readiness
...aws.com/teachers/main-page/essa-logo.pngessa-logo
...com/teachers/main-page/match-pattern.svgmatch-pattern
....com/teachers/main-page/math-meaning.svgmath-meaning
...main-page/individualized-scaffolding.svgindividualized-scaffolding
...aws.com/teachers/main-page/dino-glad.svgdino-glad
...zonaws.com/teachers/main-page/quotes.svgquotes
...zonaws.com/teachers/main-page/george.pnggeorge
...ynumbers.com/main-page/count-in-rows.pngcard-preview
...bers.com/main-page/buttons-on-jacket.pngcard-preview
...m/main-page/rectangle-above-triangle.pngcard-preview
...m/teachers/main-page/differentiation.svgdifferentiation
...onaws.com/teachers/main-page/devices.svgdevices
...zonaws.com/teachers/main-page/beling.svgbeling
...onaws.com/teachers/main-page/support.svgsupport
...mazonaws.com/teachers/main-page/data.svgdata
...bers.com/teachers/headers/happy-logo.svglogo
Video URLWidthHeight
...outube.com/embed/bgXOn-A0KZY?color=white640360

Page structure

H1 heading
(Critically important)
Math Centers that Deliver – Differentiation Done Right
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Math Centers that Deliver – Differentiation Done Right
H2 Happy Numbers is helping 2 million students grow in math! Here’s what their teachers think:
H2 College Readiness Lives or Dies in Elementary Classrooms
H2 Happy Numbers is research based
H2 Depth over Breadth, Quality over Quantity
H2 Quick Sneak Peak
H2 Differentiation = Success for Every Student
H2 Super Easy to Set Up
H2 Safe and Easy to Use
H2 Company
H2 Curriculum
H2 Support
H3 Connected PK – 5 Math Story
H3 Meaning behind Math with Every Touch
H3 Individualized Scaffolding and Feedback
H3 How can a teacher be everywhere at once?
Some internal links have dynamic parameters. All internal URLs, which are not marked as nofollow, should not contain dynamic parameters.
Some anchor texts are used more than once.
The number of internal links is ok.
None of the anchor texts is too long.
There are 9 external links on this page.

Found links on this page

LinkAttributesAnchor text
https://happynumbers.com/pricingIMG-ALT banner
/?redirect=noIMG-ALT logo
https://happynumbers.com/mathCurriculum
https://happynumbers.com/pricingPricing
/t/auth/signupSet up your class
/t/auth/loginI’m a Teacher Sign in to your account or sign up for one
/find_classI’m a Student Sign in to your account (created by your teacher)
/t/auth/signupGet it started for free
https://my.nctm.org/blogs/evge...External Subdomain Those who lag behind their peers by grade 8 have been on this clear trajectory since kindergarten
/blog/happy-numbers-results-pr...New window View all studies
/blog/hitting-math-benchmarks-...I have ever used for my Kindergarten and First Grade classes!
https://shared.happynumbers.co...External Subdomain Download the Whitepaper
/t/auth/signupSet up your class!
/?redirect=noText duplicate IMG-ALT logo
https://www.youtube.com/c/Happ...New window External Subdomain No Text
https://www.facebook.com/happy...New window External Subdomain No Text
https://www.instagram.com/happ...New window External Subdomain No Text
https://twitter.com/intent/use...New window External No Text
https://www.linkedin.com/compa...New window External Subdomain No Text
https://hu.pinterest.com/happy...New window External Subdomain No Text
https://happynumbers.com/blogBlog
https://happynumbers.com/pricingText duplicate Pricing
/privacy-policyPrivacy Policy
/terms-of-serviceTerms of Service
/math/pre-kindergartenPre-Kindergarten
/math/kindergartenKindergarten
/math/grade11st Grade
/math/grade22nd Grade
/math/grade33rd Grade
/math/grade44th Grade
/math/grade55th Grade
https://help.happynumbers.com/en/External Subdomain Help Center
/public/securitySecurity
/public/vdpVulnerability Disclosure Program
/privacy-policyText duplicate Privacy Policy
/terms-of-serviceText duplicate Terms of Service

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://happynumbers.com/?redirect=no"
HTTP header
(Important)
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 (1.27 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 only loads 1 CSS files. That's ok.
This page does not require any JavaScript files.
The file size of the HTML document is fine (56 kB).

HTTP Response Header

NameValue
serveropenresty
dateSat, 26 Jul 2025 18:51:49 GMT
content-typetext/html; charset=utf-8
transfer-encodingchunked
connectionkeep-alive
set-cookie306 Characters
x-content-type-optionsnosniff
varyAccept-Encoding
content-encodinggzip
x-envoy-upstream-service-time68
x-deploy-id34dcaffd
strict-transport-securitymax-age=86400; includeSubDomains
statuscode200
http_versionHTTP/1.1

External factors

This page has only a few links from other websites.
This page only has backlinks from 23 referring domains.
This page only has 31 backlinks.
This page only has few backlinks from 21 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Allow: /
Disallow: /order/
Disallow: /administrators/
Disallow: /teachers/
Disallow: /students/
Disallow: /universe/
Disallow: /magic/
Disallow: /factories/
Disallow: /e4/
Disallow: /api/
Disallow: /ip/

Similar sites

Search preview

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Math Centers that Deliver — Differentiation Done Right | HappyNumbe...
Math Centers that Deliver — Differentiation Done Right | HappyNumbers.com

Most important keywords

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

KeywordResultRecheck
Math81%Check
Differentiation80%Check
Math Centers79%Check
Differentiation Done Right77%Check
Deliver Differentiation Done75%Check
Centers73%Check
Deliver73%Check
done right73%Check
Deliver Differentiation Done Right73%Check
Happy72%Check
Show more keywords and terms

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Cookie Policy

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