Tools & Wizards About Us
post.blackboard.com screenshot

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 72% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

post.blackboard.com

Blackboard Learn

Page Load Speed

5.3 sec in total

First Response

36 ms

Resources Loaded

5.1 sec

Page Rendered

158 ms

post.blackboard.com screenshot

About Website

Click here to check amazing Post Blackboard content for United States. Otherwise, check out these important facts you probably never knew about post.blackboard.com

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Key Findings

We analyzed Post.blackboard.com page load time and found that the first response time was 36 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

post.blackboard.com performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.5 s

2/100

10%

LCP (Largest Contentful Paint)

Value10.4 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value5,520 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.07

96/100

15%

TTI (Time to Interactive)

Value14.1 s

10/100

10%

Network Requests Diagram

post.blackboard.com

36 ms

tabAction

2442 ms

shared.css

16 ms

theme.css

26 ms

app_nav.css

29 ms

Our browser made a total of 52 requests to load all elements on the main page. We found that 87% of them (45 requests) were addressed to the original Post.blackboard.com, 6% (3 requests) were made to Google-analytics.com and 2% (1 request) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (2.4 sec) belongs to the original domain Post.blackboard.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.8 MB (84%)

Content Size

2.2 MB

After Optimization

343.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Post.blackboard.com main page is 2.2 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. 50% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 30.2 kB

  • Original 41.4 kB
  • After minification 40.4 kB
  • After compression 11.2 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 30.2 kB or 73% of the original size.

Image Optimization

-91%

Potential reduce by 651.6 kB

  • Original 717.9 kB
  • After minification 66.3 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, Post Blackboard needs image optimization as it can save up to 651.6 kB or 91% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-82%

Potential reduce by 852.0 kB

  • Original 1.0 MB
  • After minification 668.8 kB
  • After compression 190.6 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 852.0 kB or 82% of the original size.

CSS Optimization

-81%

Potential reduce by 310.7 kB

  • Original 385.8 kB
  • After minification 358.5 kB
  • After compression 75.1 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. Post.blackboard.com needs all CSS files to be minified and compressed as it can save up to 310.7 kB or 81% of the original size.

Requests Breakdown

Number of requests can be reduced by 37 (77%)

Requests Now

48

After Optimization

11

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 48 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Post Blackboard. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

post.blackboard.com

post.blackboard.com

36 ms

tabAction

tabAction

2442 ms

shared.css

shared.css

16 ms

theme.css

theme.css

26 ms

app_nav.css

app_nav.css

29 ms

colorpalette.generated.modern.css

colorpalette.generated.modern.css

37 ms

i18n.js

i18n.js

35 ms

A9B7E3517BE9981468A20446D4F79A01.js

A9B7E3517BE9981468A20446D4F79A01.js

80 ms

UserDataDWRFacade.js

UserDataDWRFacade.js

32 ms

MashupDWRFacade.js

MashupDWRFacade.js

31 ms

secondaryTabs.js

secondaryTabs.js

44 ms

portalmodule.js

portalmodule.js

42 ms

engine.js

engine.js

49 ms

util.js

util.js

46 ms

215B40F50B261DD4BC657D09D0BEB20C.js

215B40F50B261DD4BC657D09D0BEB20C.js

49 ms

UserDWRFacade.js

UserDWRFacade.js

50 ms

welcomeOverlay.js

welcomeOverlay.js

51 ms

social.js

social.js

64 ms

ProfileProviderService.js

ProfileProviderService.js

54 ms

cookieConsent.js

cookieConsent.js

65 ms

D410861E3BF6713265EE82A3363F8BE4.js

D410861E3BF6713265EE82A3363F8BE4.js

68 ms

ToolActivityService.js

ToolActivityService.js

56 ms

tool_service.js

tool_service.js

69 ms

icon-core.css

icon-core.css

60 ms

icon-listing.css

icon-listing.css

62 ms

theme1.css

theme1.css

74 ms

theme2.css

theme2.css

65 ms

iframe_api

iframe_api

85 ms

analytics.js

analytics.js

119 ms

shield_back_repeat.jpg

shield_back_repeat.jpg

2316 ms

ax-links.png

ax-links.png

27 ms

utilicons_sprite_rev.png

utilicons_sprite_rev.png

24 ms

post_logo_white_horizontal.png

post_logo_white_horizontal.png

167 ms

x_btn.png

x_btn.png

40 ms

reorder_bg.png

reorder_bg.png

36 ms

consent

consent

35 ms

progress_learningSystem.gif

progress_learningSystem.gif

90 ms

student_login.png

student_login.png

100 ms

faculty_staff_login.png

faculty_staff_login.png

98 ms

techsupport_final_module_smaller_version.png

techsupport_final_module_smaller_version.png

124 ms

www-widgetapi.js

www-widgetapi.js

127 ms

UserDataDWRFacade.js

UserDataDWRFacade.js

54 ms

MashupDWRFacade.js

MashupDWRFacade.js

56 ms

titlebartagutils.js

titlebartagutils.js

54 ms

62C5A78F3B3832CF6BCD5FCCBCD0014A.js

62C5A78F3B3832CF6BCD5FCCBCD0014A.js

59 ms

editpage_on.gif

editpage_on.gif

58 ms

bblearn_2011_bg.png

bblearn_2011_bg.png

58 ms

collect

collect

29 ms

collect

collect

26 ms

collect

collect

53 ms

print.css

print.css

12 ms

nr-852.min.js

nr-852.min.js

46 ms

Accessibility Review

post.blackboard.com accessibility score

89

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

post.blackboard.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

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

post.blackboard.com SEO score

77

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

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 Post.blackboard.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 Post.blackboard.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.

Social Sharing Optimization

post.blackboard.com

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