1.4 sec in total
63 ms
1.1 sec
213 ms
Visit learnjavaonline.org now to see the best up-to-date Learn Java Online content for United States and also check out these interesting facts you probably never knew about learnjavaonline.org
learnjavaonline.org is a free interactive Java tutorial for people who want to learn Java, fast.
Visit learnjavaonline.orgWe analyzed Learnjavaonline.org page load time and found that the first response time was 63 ms and then it took 1.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 25% of websites can load faster.
learnjavaonline.org performance score
name
value
score
weighting
Value1.4 s
97/100
10%
Value2.0 s
96/100
25%
Value4.6 s
71/100
10%
Value1,870 ms
9/100
30%
Value0.512
15/100
15%
Value9.5 s
30/100
10%
63 ms
9 ms
11 ms
20 ms
13 ms
Our browser made a total of 83 requests to load all elements on the main page. We found that 33% of them (27 requests) were addressed to the original Learnjavaonline.org, 24% (20 requests) were made to Adserver.adtechus.com and 7% (6 requests) were made to Tpc.googlesyndication.com. The less responsive or slowest element that took the longest time to load (576 ms) relates to the external source Spoj.com.
Page size can be reduced by 807.6 kB (66%)
1.2 MB
413.4 kB
In fact, the total size of Learnjavaonline.org main page is 1.2 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. Javascripts take 1.1 MB which makes up the majority of the site volume.
Potential reduce by 56.4 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 56.4 kB or 74% of the original size.
Potential reduce by 6.9 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, Learn Java Online needs image optimization as it can save up to 6.9 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 744.4 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 744.4 kB or 67% of the original size.
Number of requests can be reduced by 42 (53%)
80
38
The browser has sent 80 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Learn Java Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 32 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.
learnjavaonline.org
63 ms
codemirror.css
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monokai.css
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bootstrap.min.css
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learnpython.css
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learnjavaonline.org 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
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
Buttons do not have an accessible name
<frame> or <iframe> elements do not have a title
Image elements do not have [alt] attributes
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
learnjavaonline.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
General
Impact
Issue
Detected JavaScript libraries
Page has valid source maps
learnjavaonline.org 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
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
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Learnjavaonline.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 Learnjavaonline.org 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.
learnjavaonline.org
Open Graph description is not detected on the main page of Learn Java Online. 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: