2.1 sec in total
74 ms
1.2 sec
846 ms
Visit greatcourses.com now to see the best up-to-date Greatcourses content for United States and also check out these interesting facts you probably never knew about greatcourses.com
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Visit greatcourses.comWe analyzed Greatcourses.com page load time and found that the first response time was 74 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.
greatcourses.com performance score
name
value
score
weighting
Value3.2 s
42/100
10%
Value3.7 s
59/100
25%
Value25.2 s
0/100
10%
Value840 ms
34/100
30%
Value0.021
100/100
15%
Value46.2 s
0/100
10%
74 ms
173 ms
62 ms
105 ms
95 ms
Our browser made a total of 45 requests to load all elements on the main page. We found that 29% of them (13 requests) were addressed to the original Greatcourses.com, 11% (5 requests) were made to Fonts.googleapis.com and 11% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (597 ms) relates to the external source Lh3.googleusercontent.com.
Page size can be reduced by 1.5 MB (29%)
5.2 MB
3.7 MB
In fact, the total size of Greatcourses.com main page is 5.2 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. 60% of websites need less resources to load. Images take 3.7 MB which makes up the majority of the site volume.
Potential reduce by 68.2 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 68.2 kB or 74% of the original size.
Potential reduce by 336.5 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. Greatcourses images are well optimized though.
Potential reduce by 466.6 kB
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 466.6 kB or 66% of the original size.
Potential reduce by 619.4 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. Greatcourses.com needs all CSS files to be minified and compressed as it can save up to 619.4 kB or 88% of the original size.
Number of requests can be reduced by 12 (32%)
37
25
The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Greatcourses. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.
greatcourses.com
74 ms
www.greatcourses.com
173 ms
application-96eaeddd5a767878f25ded54b61fd0d3.css
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hull.api.js
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application-52250f159a9fdc8e753baec9ccb94ea9.js
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addthis_widget.js
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css
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594 ms
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none
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udacity-ffb5c0389cc9bbeae5142d2ba63767a6.png
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udemy-71ce3b9040123639f556f415e633aa11.png
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logo
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fontello-e80d61462bfdca24469271e15fad4430.woff
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analytics.js
220 ms
remote.html
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boost
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300lo.json
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counter.5524cceca805eb4b9b2b.js
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sh.07f0d9bf220d07a763adad1e.html
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shares.json
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collect
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hull-remote.js
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greatcourses.com 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.
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
Links do not have a discernible name
greatcourses.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
greatcourses.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Mobile Friendly
Make sure your pages are mobile friendly so users don’t have to pinch or zoom in order to read the content pages. [Learn more](https://developers.google.com/search/mobile-sites/).
Impact
Issue
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Greatcourses.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Greatcourses.com main page’s claimed encoding is utf-8. Use of this encoding format is the best practice as the main page visitors from all over the world won’t have any issues with symbol transcription.
greatcourses.com
Open Graph data is detected on the main page of Greatcourses. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: