66.7 sec in total
179 ms
53.5 sec
13 sec
Welcome to cut-the-knot.org homepage info - get ready to check Cut The Knot best content for United States right away, or after learning these important things about cut-the-knot.org
An encyclopedic collection of math resources for all grades. Arithmetic games, problems, puzzles, and articles
Visit cut-the-knot.orgWe analyzed Cut-the-knot.org page load time and found that the first response time was 179 ms and then it took 66.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 24 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.
cut-the-knot.org performance score
name
value
score
weighting
Value2.3 s
73/100
10%
Value2.8 s
82/100
25%
Value2.5 s
98/100
10%
Value30 ms
100/100
30%
Value0
100/100
15%
Value2.4 s
98/100
10%
179 ms
272 ms
796 ms
1304 ms
2160 ms
Our browser made a total of 109 requests to load all elements on the main page. We found that 17% of them (18 requests) were addressed to the original Cut-the-knot.org, 12% (13 requests) were made to Images.spot.im and 6% (7 requests) were made to Ap.lijit.com. The less responsive or slowest element that took the longest time to load (33.2 sec) relates to the external source Ml314.com.
Page size can be reduced by 4.2 MB (61%)
6.8 MB
2.7 MB
In fact, the total size of Cut-the-knot.org main page is 6.8 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 55% of websites need less resources to load. Javascripts take 4.6 MB which makes up the majority of the site volume.
Potential reduce by 236.8 kB
HTML content can be minified and compressed by a website’s server. The most efficient way is to compress content using GZIP which reduces data amount travelling through the network between server and browser. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 236.8 kB or 81% of the original size.
Potential reduce by 348.6 kB
Image size optimization can help to speed up a website loading time. The chart above shows the difference between the size before and after optimization. Obviously, Cut The Knot needs image optimization as it can save up to 348.6 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 3.4 MB
It’s better to minify JavaScript in order to improve website performance. The diagram shows the current total size of all JavaScript files against the prospective JavaScript size after its minification and compression. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 3.4 MB or 74% of the original size.
Potential reduce by 179.9 kB
CSS files minification is very important to reduce a web page rendering time. The faster CSS files can load, the earlier a page can be rendered. Cut-the-knot.org needs all CSS files to be minified and compressed as it can save up to 179.9 kB or 83% of the original size.
Number of requests can be reduced by 43 (55%)
78
35
The browser has sent 78 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cut The Knot. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and as a result speed up the page load time.
cut-the-knot.org
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cut-the-knot.org accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
Names and labels
These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
Image elements do not have [alt] attributes
Links do not have a discernible name
Tables and lists
These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.
Impact
Issue
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
cut-the-knot.org best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
cut-the-knot.org SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Image elements do not have [alt] attributes
EN
N/A
ISO-8859-1
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cut-the-knot.org can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Cut-the-knot.org main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.
cut-the-knot.org
Open Graph description is not detected on the main page of Cut The Knot. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: