2.3 sec in total
151 ms
993 ms
1.2 sec
Visit oopschool.com now to see the best up-to-date Oop School content and also check out these interesting facts you probably never knew about oopschool.com
From OOP with simula to design patterns with BETA. Links related to object oriented programming and important litterature on object oriented programming and design.
Visit oopschool.comWe analyzed Oopschool.com page load time and found that the first response time was 151 ms and then it took 2.2 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.
oopschool.com performance score
name
value
score
weighting
Value1.5 s
96/100
10%
Value2.0 s
97/100
25%
Value1.7 s
100/100
10%
Value30 ms
100/100
30%
Value0.089
92/100
15%
Value2.2 s
99/100
10%
151 ms
39 ms
39 ms
39 ms
45 ms
Our browser made a total of 118 requests to load all elements on the main page. We found that 16% of them (19 requests) were addressed to the original Oopschool.com, 54% (64 requests) were made to Yceml.net and 9% (11 requests) were made to Ftjcfx.com. The less responsive or slowest element that took the longest time to load (597 ms) relates to the external source Yceml.net.
Page size can be reduced by 109.4 kB (71%)
153.6 kB
44.2 kB
In fact, the total size of Oopschool.com main page is 153.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 50% of websites need less resources to load. HTML takes 129.2 kB which makes up the majority of the site volume.
Potential reduce by 97.6 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 97.6 kB or 76% of the original size.
Potential reduce by 0 B
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. Oop School images are well optimized though.
Potential reduce by 10.9 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 10.9 kB or 56% of the original size.
Potential reduce by 888 B
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. Oopschool.com needs all CSS files to be minified and compressed as it can save up to 888 B or 30% of the original size.
Number of requests can be reduced by 16 (80%)
20
4
The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Oop School. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.
oopschool.com
151 ms
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code.css
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modernizr-2.0.6.js
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menu.js
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core.js
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tooltips.js
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deliciousbadge.js
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sliding-menu.js
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oopschool.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.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
<object> elements do not have alternate text
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>).
oopschool.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Browser errors were logged to the console
oopschool.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
Image elements do not have [alt] attributes
Document uses plugins
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oopschool.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 Oopschool.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.
oopschool.com
Open Graph description is not detected on the main page of Oop School. 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: