Tools & Wizards About Us
learnlab.org screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

learnlab.org

LearnLab – Part of the Simon Initiative

Page Load Speed

1.4 sec in total

First Response

31 ms

Resources Loaded

997 ms

Page Rendered

358 ms

learnlab.org screenshot

About Website

Click here to check amazing Learn Lab content for United States. Otherwise, check out these important facts you probably never knew about learnlab.org

Take advantage of LearnLab's exceptional evidence-based, data-driven research in educational technology and learning science. Explore certificate courses & online workshops. Collaborate with us and ne...

Visit learnlab.org

Key Findings

We analyzed Learnlab.org page load time and found that the first response time was 31 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

learnlab.org performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value4.5 s

73/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value9.7 s

28/100

10%

Network Requests Diagram

learnlab.org

31 ms

learnlab.org

803 ms

form.css

47 ms

style-main-new.min.css

49 ms

elementor-icons.min.css

50 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 89% of them (33 requests) were addressed to the original Learnlab.org, 5% (2 requests) were made to Platform.twitter.com and 3% (1 request) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (803 ms) belongs to the original domain Learnlab.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 784.2 kB (29%)

Content Size

2.7 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Learnlab.org main page is 2.7 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. 65% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 81.2 kB

  • Original 97.3 kB
  • After minification 95.6 kB
  • After compression 16.2 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 81.2 kB or 83% of the original size.

Image Optimization

-12%

Potential reduce by 245.6 kB

  • Original 2.0 MB
  • After minification 1.7 MB

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, Learn Lab needs image optimization as it can save up to 245.6 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-68%

Potential reduce by 176.3 kB

  • Original 259.4 kB
  • After minification 259.4 kB
  • After compression 83.1 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 176.3 kB or 68% of the original size.

CSS Optimization

-85%

Potential reduce by 281.1 kB

  • Original 332.3 kB
  • After minification 330.1 kB
  • After compression 51.1 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. Learnlab.org needs all CSS files to be minified and compressed as it can save up to 281.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (53%)

Requests Now

34

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Learn Lab. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

learnlab.org

learnlab.org

31 ms

learnlab.org

learnlab.org

803 ms

form.css

form.css

47 ms

style-main-new.min.css

style-main-new.min.css

49 ms

elementor-icons.min.css

elementor-icons.min.css

50 ms

frontend.min.css

frontend.min.css

108 ms

swiper.min.css

swiper.min.css

63 ms

post-1952.css

post-1952.css

59 ms

font-awesome.min.css

font-awesome.min.css

60 ms

post-3154.css

post-3154.css

61 ms

css

css

29 ms

jquery.min.js

jquery.min.js

92 ms

jquery-migrate.min.js

jquery-migrate.min.js

72 ms

weblizar-fronend-twitter-tweets.js

weblizar-fronend-twitter-tweets.js

72 ms

widgets.js

widgets.js

33 ms

CMU_logo_horiz_white.png

CMU_logo_horiz_white.png

27 ms

twitter.png

twitter.png

28 ms

facebook-logo-white.png

facebook-logo-white.png

28 ms

Learnlab-Logo_tspnt-no-PSLC-small.png

Learnlab-Logo_tspnt-no-PSLC-small.png

28 ms

frontend.min.js

frontend.min.js

24 ms

frontend.js

frontend.js

21 ms

webpack.runtime.min.js

webpack.runtime.min.js

22 ms

frontend-modules.min.js

frontend-modules.min.js

20 ms

waypoints.min.js

waypoints.min.js

21 ms

core.min.js

core.min.js

22 ms

frontend.min.js

frontend.min.js

30 ms

learnlab-header-1.jpg

learnlab-header-1.jpg

57 ms

slider-8-1024x563.jpg

slider-8-1024x563.jpg

57 ms

math-book.jpg

math-book.jpg

55 ms

LEARNING-ENGINEERING.png

LEARNING-ENGINEERING.png

54 ms

summer-school.jpg

summer-school.jpg

54 ms

tel-4-all-1024x809.png

tel-4-all-1024x809.png

64 ms

matrix-1024x754.png

matrix-1024x754.png

102 ms

tools.png

tools.png

70 ms

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

widget_iframe.2f70fb173b9000da126c79afe2098f02.html

23 ms

settings

settings

108 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

51 ms

Accessibility Review

learnlab.org accessibility score

96

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

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

High

Links do not have a discernible name

Best Practices

learnlab.org 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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

learnlab.org SEO score

91

Search Engine Optimization Advices

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 Learnlab.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 Learnlab.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.

Social Sharing Optimization

learnlab.org

Open Graph description is not detected on the main page of Learn Lab. 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: