Sudoku.com - SEO Checker

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Overview of the SEO Check
Meta information
90% 
Page quality
92% 
Page structure
100% 
Link structure
30% 
Server
100% 
External factors
100% 
SEO Score
Response time
0.38 s
File size
134.20 kB
Words
1312
Media files
13
Number of links
117 internal / 34 external

Task list of SEO Improvements

Meta specifications

Title
(Critically important)
Play Free Sudoku online - solve web sudoku puzzles
The length of the page title is perfect. (473 pixels out of 580 max pixel length)
There are no duplicate words in the title
Meta description
(Critically important)
Play free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!
The length of the meta description is perfect. (960 pixels out of 1000 max pixel length)
Crawlability
(Critically important)
There are no problems in accessing the website.
Canonical URL
(Important)
https://sudoku.com/
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 missing.
An alternate link incorrectly contains an URL with a relative path.
A language definition is specified wrong in alternate links.
A language definition is specified wrong 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)
The favicon is linked correctly.

Meta tags

NameValue
viewportviewport-fit=cover, width=device-width, initial-scale=1, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no
apple-itunes-appapp-id=1193508329, affiliate-data=sudoku.com%20web
descriptionPlay free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!
keywordsEmpty
msapplication-TileColor#ffffff
msapplication-TileImage/ms-icon-144x144.png
theme-color#ffffff
google-site-verificationrFuc-MTuwUczYY0IagG3SQ8HteDPkj3a29Qb_2r1hMc
langen
charsetUTF-8

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Page quality

Content
(Critically important)
This page contains 1312 words. That's ok.
36.7% 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.
12 paragraphs were found on this page.
The text content is perfect.
No placeholders texts or images were found.
There are no duplicates on the site.
The average number of words per sentence of 20.65 words is good.
Frames
(Critically important)
This page does not use a frameset.
Mobile optimization
(Somewhat important)
A viewport "viewport-fit=cover, width=device-width, initial-scale=1, minimum-scale=1.0, maximum-scale=1.0, user-scalable=no" 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 26 tags for this page.
Image SEO
(Somewhat important)
1 images have no alt attribute. The content of alt attributes is used by search engines.
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
/img/img-tournament-completed.pngmedals
https://sudoku.com/img/rays.pngNo alt attribute provided
/img/calendar-arrow-accent.svgarrow
/img/calendar-arrow-accent.svgarrow
/img/nav-submit-accent.svgarrow
https://sudoku.com/img/icon-app.pngsudoku app icon
https://sudoku.com/img/icon-app.pngsudoku app icon

Page structure

H1 heading
(Critically important)
Play Free Sudoku Now!
The H1 heading is perfect.
Headings
(Important)
The heading structure is perfect.

Heading structure

Heading levelContent
H1 Play Free Sudoku Now!
H2 About Sudoku
H2 How to play Sudoku
H3 Sudoku Tips
Some anchor texts are used more than once.
There are 1 links with a trivial anchor text.
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 too many external links (34) on this page.

Found links on this page

LinkAttributesAnchor text
https://sudoku.com/Classic
https://sudoku.com/killerKiller
https://sudoku.com/tournaments00h 00mTournament
https://sudoku.com/challengesDaily Challenge
https://sudoku.com/awardsAwards
https://sudoku.com/sudoku-rules/Rules
/sudoku-printablePrintable Sudoku
https://sudoku.com/sudoku-solverSolver
https://sudoku.com/how-to-play/Tips
/sudoku-printableText duplicate Printable Sudoku
https://sudoku.com/sudoku-solverText duplicate Solver
https://sudoku.com/how-to-play/Text duplicate Tips
https://sudoku.com/English
A-TITLE English
https://sudoku.com/jp日本語
A-TITLE 日本語
https://sudoku.com/itItaliano
A-TITLE Italiano
https://sudoku.com/zh中文
A-TITLE 中文
https://sudoku.com/deDeutsch
A-TITLE Deutsch
https://sudoku.com/frFrançais
A-TITLE Français
https://sudoku.com/esEspañol
A-TITLE Español
https://sudoku.com/ptPortuguês
A-TITLE Português
https://sudoku.com/trTürk
A-TITLE Türk
https://sudoku.com/plPolski
A-TITLE Polski
https://sudoku.com/ko한국어
A-TITLE 한국어
https://sudoku.com/thไทย
A-TITLE ไทย
https://sudoku.com/viTiếng Việt
A-TITLE Tiếng Việt
https://sudoku.com/arعربى
A-TITLE عربى
https://sudoku.com/mxEspañol (México)
A-TITLE Español (México)
https://sudoku.com/brPortuguês (Brasil)
A-TITLE Português (Brasil)
https://sudoku.com/tw中文（T）
A-TITLE 中文（T）
https://sudoku.com/ruРусский
A-TITLE Русский
https://sudoku.com/A-TITLE Play Free Sudoku, a Popular Online Puzzle Game
https://sudoku.com/Text duplicate Classic
https://sudoku.com/killerText duplicate Killer
https://sudoku.com/easy/Easy
https://sudoku.com/medium/Medium
https://sudoku.com/hard/Hard
https://sudoku.com/expert/Expert
https://sudoku.com/evil/Master
https://sudoku.com/extreme/Extreme
https://sudoku.com/killer/easy/Text duplicate Easy
https://sudoku.com/killer/medium/Text duplicate Medium
https://sudoku.com/killer/hard/Text duplicate Hard
https://sudoku.com/killer/expert/Text duplicate Expert
https://sudoku.com/easy/Text duplicate Easy
https://sudoku.com/medium/Text duplicate Medium
https://sudoku.com/hard/Text duplicate Hard
https://sudoku.com/expert/Text duplicate Expert
https://sudoku.com/evil/Text duplicate Master
https://sudoku.com/extreme/Text duplicate Extreme
https://sudoku.com/killer/easy/Text duplicate Easy
https://sudoku.com/killer/medium/Text duplicate Medium
https://sudoku.com/killer/hard/Text duplicate Hard
https://sudoku.com/killer/expert/Text duplicate Expert
https://sudoku.com/easy/Text duplicate Easy
https://sudoku.com/medium/Text duplicate Medium
https://sudoku.com/hard/Text duplicate Hard
https://sudoku.com/expert/Text duplicate Expert
https://sudoku.com/evil/Text duplicate Master
https://sudoku.com/extreme/Text duplicate Extreme
https://sudoku.com/killer/easy/Text duplicate Easy
https://sudoku.com/killer/medium/Text duplicate Medium
https://sudoku.com/killer/hard/Text duplicate Hard
https://sudoku.com/killer/expert/Text duplicate Expert
https://sudoku.com/easy/Text duplicate Easy
https://sudoku.com/medium/Text duplicate Medium
https://sudoku.com/hard/Text duplicate Hard
https://sudoku.com/expert/Text duplicate Expert
https://sudoku.com/evil/Text duplicate Master
https://sudoku.com/extreme/Text duplicate Extreme
https://sudoku.com/easy/Text duplicate Easy
https://sudoku.com/medium/Text duplicate Medium
https://sudoku.com/hard/Text duplicate Hard
https://sudoku.com/expert/Text duplicate Expert
https://sudoku.com/evil/Text duplicate Master
https://sudoku.com/extreme/Text duplicate Extreme
https://sudoku.com/tournamentsSee All
https://sudoku.com/easy/Text duplicate Easy
https://sudoku.com/medium/Text duplicate Medium
https://sudoku.com/hard/Text duplicate Hard
https://sudoku.com/expert/Text duplicate Expert
https://sudoku.com/evil/Text duplicate Master
https://sudoku.com/extreme/Text duplicate Extreme
https://sudoku.com/killer/easy/Text duplicate Easy
https://sudoku.com/killer/medium/Text duplicate Medium
https://sudoku.com/killer/hard/Text duplicate Hard
https://sudoku.com/killer/expert/Text duplicate Expert
https://app.adjust.com/4j48k9vExternal Subdomain A-TITLE Get it on Google Play
https://app.adjust.com/ver8rksExternal Subdomain A-TITLE Download on the App Store
/challenges/daily-sudokuSudoku daily
https://play.google.com/store/...External Subdomain Sudoku free puzzles
https://app.adjust.com/4j48k9vExternal Subdomain Text duplicate A-TITLE Get it on Google Play
https://app.adjust.com/ver8rksExternal Subdomain Text duplicate A-TITLE Download on the App Store
https://www.easybrain.com/New window External Subdomain ©2018-2024 Easybrain. All Rights Reserved.
https://sudoku.com/Home
https://sudoku.com/challengesText duplicate Daily Challenge
https://sudoku.com/awardsText duplicate Awards
https://sudoku.com/sudoku-rules/Text duplicate Rules
https://sudoku.com/how-to-play/Text duplicate Tips
https://sudoku.com/get-in-touchGet in Touch
A-TITLE Get in Touch
/sudoku-printableText duplicate Printable Sudoku
https://sudoku.com/sudoku-solverText duplicate Solver
https://sudoku.com/Text duplicate English
A-TITLE English
https://sudoku.com/jpText duplicate 日本語
A-TITLE 日本語
https://sudoku.com/itText duplicate Italiano
A-TITLE Italiano
https://sudoku.com/zhText duplicate 中文
A-TITLE 中文
https://sudoku.com/deText duplicate Deutsch
A-TITLE Deutsch
https://sudoku.com/frText duplicate Français
A-TITLE Français
https://sudoku.com/esText duplicate Español
A-TITLE Español
https://sudoku.com/ptText duplicate Português
A-TITLE Português
https://sudoku.com/trText duplicate Türk
A-TITLE Türk
https://sudoku.com/plText duplicate Polski
A-TITLE Polski
https://sudoku.com/koText duplicate 한국어
A-TITLE 한국어
https://sudoku.com/thText duplicate ไทย
A-TITLE ไทย
https://sudoku.com/viText duplicate Tiếng Việt
A-TITLE Tiếng Việt
https://sudoku.com/arText duplicate عربى
A-TITLE عربى
https://sudoku.com/mxText duplicate Español (México)
A-TITLE Español (México)
https://sudoku.com/brText duplicate Português (Brasil)
A-TITLE Português (Brasil)
https://sudoku.com/twText duplicate 中文（T）
A-TITLE 中文（T）
https://sudoku.com/ruText duplicate Русский
A-TITLE Русский
https://easybrain.com/termsNew window External Terms
A-TITLE Terms
/page/cookies-eu/Cookie Policy
A-TITLE Cookie Policy
https://easybrain.com/privacyNew window External Privacy
A-TITLE Privacy
https://sudoku.com/Anchor Cookie Preferences
/page/cookies-eu/Text duplicate Cookie Policy
A-TITLE Cookie Policy
https://policies.google.com/pr...New window External Subdomain URL anchor text
https://policies.google.com/privacy?hl=en
http://www.google.com/policies...New window External Subdomain URL anchor text
http://www.google.com/policies/privacy/
https://support.google.com/ads...New window External Subdomain URL anchor text
https://support.google.com/adsense/answer/9012903?hl=en-GB&ref_topic=7670012
https://policies.google.com/pr...New window External Subdomain URL anchor text
https://policies.google.com/privacy
https://www.facebook.com/polic...New window External Subdomain URL anchor text
https://www.facebook.com/policies/cookies
https://www.indexexchange.com/...New window External Subdomain URL anchor text
https://www.indexexchange.com/privacy
https://www.openx.com/legal/pr...New window External Subdomain URL anchor text
https://www.openx.com/legal/privacy-policy/
https://pubmatic.com/legal/pri...New window External URL anchor text
https://pubmatic.com/legal/privacy-policy/
https://risecodes.com/video-ad...New window External URL anchor text
https://risecodes.com/video-advertisement-player-privacy-policy/
https://www.magnite.com/legal/...New window External Subdomain URL anchor text
https://www.magnite.com/legal/advertising-technology-privacy-policy/
https://www.yieldmo.com/privac...New window External Subdomain URL anchor text
https://www.yieldmo.com/privacy-policy/
https://aws.amazon.com/privacy/New window External Subdomain URL anchor text
https://aws.amazon.com/privacy/
https://triplelift.com/privacy/New window External URL anchor text
https://triplelift.com/privacy/
https://www.smaato.com/privacy/New window External Subdomain URL anchor text
https://www.smaato.com/privacy/
https://legal.loopme.com/priva...New window External Subdomain Anchor URL anchor text
https://legal.loopme.com/privacy-center#contract-hyartvn1o
https://about.ads.microsoft.co...New window External Subdomain URL anchor text
https://about.ads.microsoft.com/en-us/solutions/xandr/platform-privacy-policy
https://www.tappx.com/legal/pr...New window External Subdomain URL anchor text
https://www.tappx.com/legal/privacy-policy
https://www.minutemedia.com/po...New window External Subdomain URL anchor text
https://www.minutemedia.com/policies/privacy-policy
https://www.sharethrough.com/p...New window External Subdomain URL anchor text
https://www.sharethrough.com/privacy-center/consumer-privacy-notice
https://vidazoo.gitbook.io/vid...New window External Subdomain URL anchor text
https://vidazoo.gitbook.io/vidazoo-legal/privacy-policy
https://www.media.net/privacy-...New window External Subdomain URL anchor text
https://www.media.net/privacy-policy/
https://www.criteo.com/privacy/New window External Subdomain URL anchor text
https://www.criteo.com/privacy/
https://www.primis.tech/privac...New window External Subdomain URL anchor text
https://www.primis.tech/privacy-policy/
https://www.inmobi.com/privacy...New window External Subdomain URL anchor text
https://www.inmobi.com/privacy-policy/
https://ogury.com/ogury-websit...New window External URL anchor text
https://ogury.com/ogury-website-and-customer-privacy-and-cookie-notice/
https://nexxen.com/privacy-pol...New window External URL anchor text
https://nexxen.com/privacy-policy/
/page/cookies-eu/Trivial anchor text
click here
A-TITLE Cookie Policy

Server configuration

HTTP redirects
(Critically important)
This page redirects to "https://sudoku.com/"
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 0.38 seconds.
The file size of the HTML document is fine (134 kB).

HTTP Response Header

NameValue
dateMon, 28 Oct 2024 17:33:26 GMT
content-typetext/html; charset=UTF-8
cache-controlno-cache, private
x-frame-optionsSAMEORIGIN always;
cf-cache-statusDYNAMIC
set-cookie121 Characters
servercloudflare
cf-ray8d9cabc0287adc90-FRA
content-encodinggzip
alt-svch3=":443"; ma=86400
statuscode200
http_versionHTTP/2

External factors

This website has excellent links from other websites.
This page has backlinks from 2,202 referring domains.
This page has 116,132 backlinks.
This page has backlinks from 1,722 different ip addresses.

Links from Wikipedia

No links from Wikipedia were found.

Robots.txt

User-agent: *
Disallow: /wp-content
Disallow: */admin*
Disallow: /share-results/
Disallow: /files/
Disallow: /private/
Disallow: /api/
Disallow: *?lang=*
Disallow: /cdn-cgi/

Sitemap: https://sudoku.com/sitemap.xml

Similar sites

Search preview

sudoku.com
Play Free Sudoku online - solve web sudoku puzzles
Play free Sudoku online from Easy to Expert level on Sudoku.com. Select a difficulty level of a web sudoku puzzle to challenge yourself and enjoy the game!

Most important keywords

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

KeywordResultRecheck
Sudoku88%Check
play Sudoku83%Check
free Sudoku80%Check
Play Free Sudoku79%Check
Play77%Check
Play Free77%Check
Play free Sudoku online74%Check
free73%Check
sudoku online72%Check
web sudoku68%Check
Show more keywords and terms

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Cookie Policy

We use cookies to make our site work and also for analytics and advertising purposes. You can enable or disable optional cookies as desired. See the following links for more information.

Contact | Privacy

We need these so the site can function properly

So we can better understand how visitors use our website

So we can serve you tailored ads and promotions