Tools & Wizards About Us

Report Summary

  • 40

    Performance

    Renders faster than
    59% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

blackboard.irsc.edu

IRSC | Blackboard Learn

Page Load Speed

353 ms in total

First Response

12 ms

Resources Loaded

254 ms

Page Rendered

87 ms

About Website

Visit blackboard.irsc.edu now to see the best up-to-date Blackboard IRSC content for United States and also check out these interesting facts you probably never knew about blackboard.irsc.edu

Visit blackboard.irsc.edu

Key Findings

We analyzed Blackboard.irsc.edu page load time and found that the first response time was 12 ms and then it took 341 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

blackboard.irsc.edu performance score

40

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value5.6 s

17/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.28

43/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

Network Requests Diagram

blackboard.irsc.edu

12 ms

blackboard.irsc.edu

32 ms

ultra.css

8 ms

multi_factor_authentication.css

21 ms

prism.css

23 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 88% of them (30 requests) were addressed to the original Blackboard.irsc.edu, 12% (4 requests) were made to Learn.content.blackboardcdn.com. The less responsive or slowest element that took the longest time to load (92 ms) relates to the external source Learn.content.blackboardcdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 167.2 kB (30%)

Content Size

548.8 kB

After Optimization

381.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Blackboard.irsc.edu main page is 548.8 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. 40% of websites need less resources to load. Javascripts take 290.1 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 137.4 kB

  • Original 165.0 kB
  • After minification 163.8 kB
  • After compression 27.5 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 137.4 kB or 83% of the original size.

Image Optimization

-31%

Potential reduce by 17.5 kB

  • Original 55.8 kB
  • After minification 38.3 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. Obviously, Blackboard IRSC needs image optimization as it can save up to 17.5 kB or 31% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-4%

Potential reduce by 10.7 kB

  • Original 290.1 kB
  • After minification 289.9 kB
  • After compression 279.5 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. This website has mostly compressed JavaScripts.

CSS Optimization

-4%

Potential reduce by 1.5 kB

  • Original 37.9 kB
  • After minification 37.9 kB
  • After compression 36.4 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. Blackboard.irsc.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 16 (80%)

Requests Now

20

After Optimization

4

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blackboard IRSC. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

blackboard.irsc.edu accessibility score

91

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

blackboard.irsc.edu best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

blackboard.irsc.edu SEO score

75

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

Page is blocked from indexing

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

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Blackboard.irsc.edu 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 Blackboard.irsc.edu 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.

Social Sharing Optimization

Open Graph description is not detected on the main page of Blackboard IRSC. 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: