673 ms in total
60 ms
433 ms
180 ms
Click here to check amazing Demo Big Blue Button content for Iran. Otherwise, check out these important facts you probably never knew about demo.bigbluebutton.org
BigBlueButton enables universities and colleges to deliver a high-quality learning experience to remote students.
Visit demo.bigbluebutton.orgWe analyzed Demo.bigbluebutton.org page load time and found that the first response time was 60 ms and then it took 613 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.
demo.bigbluebutton.org performance score
name
value
score
weighting
Value5.0 s
10/100
10%
Value6.0 s
13/100
25%
Value5.9 s
48/100
10%
Value230 ms
86/100
30%
Value0.002
100/100
15%
Value7.5 s
47/100
10%
60 ms
18 ms
32 ms
49 ms
374 ms
Our browser made a total of 10 requests to load all elements on the main page. We found that 90% of them (9 requests) were addressed to the original Demo.bigbluebutton.org, 10% (1 request) were made to S3.amazonaws.com. The less responsive or slowest element that took the longest time to load (374 ms) relates to the external source S3.amazonaws.com.
Page size can be reduced by 31.9 kB (29%)
109.6 kB
77.7 kB
In fact, the total size of Demo.bigbluebutton.org main page is 109.6 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. Only 10% of websites need less resources to load. Images take 73.3 kB which makes up the majority of the site volume.
Potential reduce by 7.4 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. This page needs HTML code to be minified as it can gain 2.1 kB, which is 21% 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 7.4 kB or 75% of the original size.
Potential reduce by 4.6 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. Demo Big Blue Button images are well optimized though.
Potential reduce by 19.9 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. Demo.bigbluebutton.org needs all CSS files to be minified and compressed as it can save up to 19.9 kB or 75% of the original size.
We found no issues to fix!
8
8
The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Demo Big Blue Button. According to our analytics all requests are already optimized.
demo.bigbluebutton.org
60 ms
bijou.min.css
18 ms
style.css
32 ms
font-awesome.min.css
49 ms
forkme_right_gray_6d6d6d.png
374 ms
bbb-logo.png
31 ms
bbb-setup-audio.jpg
94 ms
bbb-viewer-overview.jpg
93 ms
bbb-presenter-overview.jpg
93 ms
fontawesome-webfont.woff
63 ms
demo.bigbluebutton.org accessibility score
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
Internationalization and localization
These are opportunities to improve the interpretation of your content by users in different locales.
Impact
Issue
<html> element does not have a [lang] attribute
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.
demo.bigbluebutton.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
Missing source maps for large first-party JavaScript
demo.bigbluebutton.org SEO score
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
N/A
N/A
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Demo.bigbluebutton.org can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else) and no language is claimed in <html> or <meta> tags either. Our system also found out that Demo.bigbluebutton.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.
demo.bigbluebutton.org
Open Graph description is not detected on the main page of Demo Big Blue Button. 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: