2.3 sec in total
35 ms
2 sec
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Visit archives.nbclearn.comWe analyzed Archives.nbclearn.com page load time and found that the first response time was 35 ms and then it took 2.3 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.
archives.nbclearn.com performance score
name
value
score
weighting
Value3.5 s
36/100
10%
Value15.3 s
0/100
25%
Value11.7 s
4/100
10%
Value5,110 ms
0/100
30%
Value0.03
100/100
15%
Value20.4 s
2/100
10%
35 ms
1512 ms
47 ms
50 ms
47 ms
Our browser made a total of 109 requests to load all elements on the main page. We found that 3% of them (3 requests) were addressed to the original Archives.nbclearn.com, 93% (101 requests) were made to Static.nbclearn.com and 2% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) belongs to the original domain Archives.nbclearn.com.
Page size can be reduced by 2.0 MB (38%)
5.3 MB
3.3 MB
In fact, the total size of Archives.nbclearn.com main page is 5.3 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 3.2 MB which makes up the majority of the site volume.
Potential reduce by 106.9 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 15.9 kB, which is 12% 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 106.9 kB or 78% of the original size.
Potential reduce by 376.9 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, Archives NBC Learn needs image optimization as it can save up to 376.9 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 1.4 MB
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 1.4 MB or 79% of the original size.
Potential reduce by 169.0 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. Archives.nbclearn.com needs all CSS files to be minified and compressed as it can save up to 169.0 kB or 86% of the original size.
Number of requests can be reduced by 28 (26%)
106
78
The browser has sent 106 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Archives NBC Learn. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.
archives.nbclearn.com
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archives.nbclearn.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
[role]s are not contained by their required parent element
ARIA tooltip elements do not have accessible names.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
[id] attributes on active, focusable elements are not unique
archives.nbclearn.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
Browser errors were logged to the console
Missing source maps for large first-party JavaScript
archives.nbclearn.com SEO score
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Archives.nbclearn.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 Archives.nbclearn.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.
archives.nbclearn.com
Open Graph description is not detected on the main page of Archives NBC Learn. 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: