Website review cut-the-knot.org
Interactive Mathematics Miscellany <br>and Puzzles
Generated on March 07 2026 17:34 PM
Old data? UPDATE !
The score is 43/100
SEO Content
Title
Interactive Mathematics Miscellany <br>and Puzzles
Length : 50
Perfect, your title contains between 10 and 70 characters.
Description
An encyclopedic collection of math resources for all grades. Arithmetic games, problems, puzzles, and articles
Length : 110
Great, your meta description contains between 70 and 160 characters.
Keywords
Interactive, Mathematics, games, geometry, arithmetic, algebra, problem, theorem, puzzles, math
Good, your page contains meta keywords.
Og Meta Properties
This page does not take advantage of Og Properties. This tags allows social crawler's better structurize your page. Use this free og properties generator to create them.
Headings
| H1 | H2 | H3 | H4 | H5 | H6 |
| 1 | 0 | 0 | 0 | 0 | 0 |
- [H1] Interactive Mathematics Miscellany and Puzzles
Images
We found 14 images on this web page.
3 alt attributes are empty or missing. Add alternative text so that search engines can better understand the content of your images.
Text/HTML Ratio
Ratio : 20%
Good, this page's ratio of text to HTML code is higher than 15, but lower than 25 percent.
Flash
Perfect, no Flash content has been detected on this page.
Iframe
Great, there are no Iframes detected on this page.
SEO Links
URL Rewrite
Good. Your links looks friendly!
Underscores in the URLs
We have detected underscores in your URLs. You should rather use hyphens to optimize your SEO.
In-page links
We found a total of 95 links including 1 link(s) to files
| Anchor | Type | Juice |
|---|---|---|
| Site | Internal | Passing Juice |
| What's new | Internal | Passing Juice |
| Content page | Internal | Passing Juice |
| Front page | Internal | Passing Juice |
| Index page | Internal | Passing Juice |
| CTK wiki-math | Internal | Passing Juice |
| About | Internal | Passing Juice |
| Privacy policy | Internal | Passing Juice |
| Help with math | Internal | Passing Juice |
| Arithmetic | Internal | Passing Juice |
| Algebra | Internal | Passing Juice |
| Geometry | Internal | Passing Juice |
| Probability | Internal | Passing Juice |
| Trigonometry | Internal | Passing Juice |
| Visual illusions | Internal | Passing Juice |
| Cut the knot! | Internal | Passing Juice |
| What is what? | Internal | Passing Juice |
| Manifesto | Internal | Passing Juice |
| Inventor's paradox | Internal | Passing Juice |
| Math as language | Internal | Passing Juice |
| CTK Insights blog | External | Passing Juice |
| Problem solving | Internal | Passing Juice |
| Outline mathematics | Internal | Passing Juice |
| Book reviews | Internal | Passing Juice |
| Interactive activities | Internal | Passing Juice |
| Did you know? | Internal | Passing Juice |
| Eye opener | Internal | Passing Juice |
| Analogue gadgets | Internal | Passing Juice |
| Math Olympiads | Internal | Passing Juice |
| Proofs in mathematics | Internal | Passing Juice |
| Things impossible | Internal | Passing Juice |
| Index/Glossary | Internal | Passing Juice |
| Fast Arithmetic Tips | Internal | Passing Juice |
| Stories for young | Internal | Passing Juice |
| Word problems | Internal | Passing Juice |
| Games and puzzles | Internal | Passing Juice |
| Our logo | Internal | Passing Juice |
| Make an identity | Internal | Passing Juice |
| Elementary geometry | Internal | Passing Juice |
| CutTheKnotMath facebook page | External | Passing Juice |
| CutTheKnotMath twitter account | External | Passing Juice |
| CTK Insights blog | External | Passing Juice |
| Tell a friend | Internal | Passing Juice |
| Talk about it | Internal | Passing Juice |
| External | Passing Juice | |
| External | Passing Juice | |
| Buy on Amazon | External | Passing Juice |
| Nassim Nicholas Taleb's post | External | Passing Juice |
| Base Conversion | Internal | Passing Juice |
| Divisibility Criteria | Internal | Passing Juice |
| Euclid's Game | Internal | Passing Juice |
| Fast Arithmetic Tips | Internal | Passing Juice |
| Hour glass timing | Internal | Passing Juice |
| Magic in Square | Internal | Passing Juice |
| Make an Identity | Internal | Passing Juice |
| Napier Bones | Internal | Passing Juice |
| Number Guessing Game | Internal | Passing Juice |
| Arithmetic Word Problems | Internal | Passing Juice |
| Online practice | Internal | Passing Juice |
| And much much more ... | Internal | Passing Juice |
| Three Jugs Problem | Internal | Passing Juice |
| Box Labels | Internal | Passing Juice |
| Fish Soup game | Internal | Passing Juice |
| Area of Parallelogram | Internal | Passing Juice |
| Asymmetric Propeller | Internal | Passing Juice |
| Butterfly Theorem | Internal | Passing Juice |
| Sangaku: Thoughts & Problems | Internal | Passing Juice |
| Fagnano's problem | Internal | Passing Juice |
| Inversion: Reflection in Circle | Internal | Passing Juice |
| Mathematics in Pizzeria | Internal | Passing Juice |
| Morley's Miracle | Internal | Passing Juice |
| Outline Solutions | Internal | Passing Juice |
| Poles and Polars | Internal | Passing Juice |
| Pythagorean Theorem (122 proofs) | Internal | Passing Juice |
| Reflection in Line | Internal | Passing Juice |
| Translation Transform | Internal | Passing Juice |
| Triangle geometry | Internal | Passing Juice |
| And much much more ... | Internal | Passing Juice |
| Shape of Constant Width | Internal | Passing Juice |
| Squinting Eyes Theorem | Internal | Passing Juice |
| And much much more ... | Internal | Passing Juice |
| Draw Ellipse | Internal | Passing Juice |
| Angle Trisector | Internal | Passing Juice |
| Broken Calculator | Internal | Passing Juice |
| Cycloids | Internal | Passing Juice |
| Ellipse and Other Curves | Internal | Passing Juice |
| Geoboard | Internal | Passing Juice |
| Peaucellier Linkage | Internal | Passing Juice |
| Pythagorean Theorem | Internal | Passing Juice |
| And more ... | Internal | Passing Juice |
| What has changed? | Internal | Passing Juice |
| |Contact| | Internal | Passing Juice |
| |Front page| | Internal | Passing Juice |
| |Contents| | Internal | Passing Juice |
| Alexander Bogomolny | Internal | Passing Juice |
SEO Keywords
Keywords Cloud
problem illusion theorem problems game magic mathematics more arithmetic puzzle
Keywords Consistency
| Keyword | Content | Title | Keywords | Description | Headings |
|---|---|---|---|---|---|
| more | 21 |  |
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| illusion | 14 | |
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| game | 10 | |
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| theorem | 9 | |
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| magic | 8 | |
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Usability
Url
Domain : cut-the-knot.org
Length : 16
Favicon
Great, your website has a favicon.
Printability
We could not find a Print-Friendly CSS.
Language
You have not specified the language. Use this free meta tags generator to declare the intended language of your website.
Dublin Core
This page does not take advantage of Dublin Core.
Document
Doctype
Missing doctype
Encoding
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W3C Validity
Errors : 0
Warnings : 0
Email Privacy
Great no email address has been found in plain text!
Deprecated HTML
| Deprecated tags | Occurrences |
|---|---|
| <FONT> | 2 |
| <font> | 3 |
| <center> | 2 |
Deprecated HTML tags are HTML tags that are no longer used. It is recommended that you remove or replace these HTML tags because they are now obsolete.
Speed Tips
|
Attention! Try to avoid nested tables in HTML. |
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Too bad, your website is using inline styles. |
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Great, your website has few CSS files. |
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Too bad, your website has too many JS files (more than 6). |
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Perfect, your website takes advantage of gzip. |
Mobile
Mobile Optimization
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Apple Icon |
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Meta Viewport Tag |
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Flash content |
Optimization
XML Sitemap
Great, your website has an XML sitemap.
| https://cut-the-knot.org/sitemap.xml |
| http://cut-the-knot.org/sitemap.xml |
Robots.txt
https://cut-the-knot.org/robots.txt
Great, your website has a robots.txt file.
Analytics
Missing
We didn't detect an analytics tool installed on this website.
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PageSpeed Insights
Device
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