6.5 sec in total
158 ms
5.2 sec
1.1 sec
Visit jason.org now to see the best up-to-date JASON content for United States and also check out these interesting facts you probably never knew about jason.org
The JASON Learning online library provides real-world STEM curriculum to educate the classrooms of tomorrow - from anywhere!
Visit jason.orgWe analyzed Jason.org page load time and found that the first response time was 158 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.
jason.org performance score
name
value
score
weighting
Value11.3 s
0/100
10%
Value15.0 s
0/100
25%
Value16.6 s
0/100
10%
Value3,800 ms
1/100
30%
Value0
100/100
15%
Value21.9 s
1/100
10%
158 ms
360 ms
156 ms
199 ms
91 ms
Our browser made a total of 178 requests to load all elements on the main page. We found that 66% of them (118 requests) were addressed to the original Jason.org, 12% (22 requests) were made to Gstatic.com and 8% (15 requests) were made to Cdn.datatables.net. The less responsive or slowest element that took the longest time to load (3.1 sec) belongs to the original domain Jason.org.
Page size can be reduced by 987.4 kB (11%)
9.3 MB
8.3 MB
In fact, the total size of Jason.org main page is 9.3 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. Only a small number of websites need less resources to load. Images take 7.9 MB which makes up the majority of the site volume.
Potential reduce by 218.3 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 218.3 kB or 84% of the original size.
Potential reduce by 672.3 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. JASON images are well optimized though.
Potential reduce by 60.3 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. This website has mostly compressed JavaScripts.
Potential reduce by 36.6 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. Jason.org needs all CSS files to be minified and compressed as it can save up to 36.6 kB or 13% of the original size.
Number of requests can be reduced by 129 (75%)
171
42
The browser has sent 171 CSS, Javascripts, AJAX and image requests in order to completely render the main page of JASON. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 76 to 1 for JavaScripts and from 55 to 1 for CSS and as a result speed up the page load time.
jason.org
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jason.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
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
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
jason.org 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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
jason.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
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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 Jason.org 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 Jason.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.
jason.org
Open Graph data is detected on the main page of JASON. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: