3.3 sec in total
288 ms
1.6 sec
1.4 sec
Click here to check amazing Everythingcomputerscience content for United States. Otherwise, check out these important facts you probably never knew about everythingcomputerscience.com
Free Web Computer Science Tutorials, books, and information. A website about computer science
Visit everythingcomputerscience.comWe analyzed Everythingcomputerscience.com page load time and found that the first response time was 288 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.
everythingcomputerscience.com performance score
name
value
score
weighting
Value3.2 s
42/100
10%
Value36.0 s
0/100
25%
Value28.4 s
0/100
10%
Value19,770 ms
0/100
30%
Value0.301
39/100
15%
Value48.8 s
0/100
10%
288 ms
161 ms
54 ms
55 ms
56 ms
Our browser made a total of 60 requests to load all elements on the main page. We found that 22% of them (13 requests) were addressed to the original Everythingcomputerscience.com, 10% (6 requests) were made to Htmlcommentbox.com and 10% (6 requests) were made to Googleads.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (544 ms) relates to the external source Googleads.g.doubleclick.net.
Page size can be reduced by 768.3 kB (44%)
1.8 MB
992.3 kB
In fact, the total size of Everythingcomputerscience.com main page is 1.8 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. 60% of websites need less resources to load. Images take 694.1 kB which makes up the majority of the site volume.
Potential reduce by 44.9 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. This page needs HTML code to be minified as it can gain 10.1 kB, which is 17% of the original size. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 44.9 kB or 76% of the original size.
Potential reduce by 32.8 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. Everythingcomputerscience images are well optimized though.
Potential reduce by 377.5 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 377.5 kB or 60% of the original size.
Potential reduce by 313.1 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. Everythingcomputerscience.com needs all CSS files to be minified and compressed as it can save up to 313.1 kB or 83% of the original size.
Number of requests can be reduced by 23 (43%)
53
30
The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Everythingcomputerscience. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.
everythingcomputerscience.com
288 ms
bootstrap.css
161 ms
round-about.css
54 ms
1-col-portfolio.css
55 ms
thumbnail-gallery.css
56 ms
half-slider.css
57 ms
responsive-video.css
74 ms
adsbygoogle.js
5 ms
twitter-bootstrap.css
32 ms
jquery-1.10.2.js
112 ms
bootstrap.js
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analytics.js
123 ms
xx310zM3tLs
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jread
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P86w6CHhmQ4
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btn_donateCC_LG.gif
181 ms
pixel.gif
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windows21900x1080.jpg
466 ms
EverythingComputerScience_logo.gif
80 ms
Udemy_Recurrence_Relation2.JPG
228 ms
ca-pub-8380969288939810.js
235 ms
zrt_lookup.html
246 ms
show_ads_impl.js
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glyphicons-halflings-regular.woff
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qFH9gVvHqWg
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flag.png
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like.png
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reply.png
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feed.png
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collect
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ads
544 ms
osd.js
82 ms
ads
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www-embed-player-vflfNyN_r.css
112 ms
www-embed-player.js
160 ms
ads
467 ms
ads
483 ms
ga-audiences
71 ms
jquery.min.js
172 ms
swfobject.js
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fBnyGA8Aionz5086-mElmoOSPUuyQ1M9Un647_EjucU.js
64 ms
ad_status.js
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zN7GBFwfMP4uA6AR0HCoLQ.ttf
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RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf
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get_flash_player.gif
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6998.png
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nr-885.min.js
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m_js_controller.js
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abg.js
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13 ms
everythingcomputerscience.com accessibility score
ARIA
These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.
Impact
Issue
[aria-*] attributes do not match their roles
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
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
<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.
Lists do not contain only <li> elements and script supporting elements (<script> and <template>).
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
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
Links do not have a discernible name
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
everythingcomputerscience.com 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
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
everythingcomputerscience.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
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
Tap targets are not sized appropriately
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Everythingcomputerscience.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 Everythingcomputerscience.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.
everythingcomputerscience.com
Open Graph description is not detected on the main page of Everythingcomputerscience. 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: