Tools & Wizards About Us
leonardo.info screenshot

Report Summary

  • 32

    Performance

    Renders faster than
    52% of other websites

  • 90

    Accessibility

    Visual factors better than
    that of 74% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

leonardo.info

| Leonardo/ISASTwith Arizona State University

Page Load Speed

1 sec in total

First Response

76 ms

Resources Loaded

670 ms

Page Rendered

277 ms

leonardo.info screenshot

About Website

Click here to check amazing Leonardo content for United States. Otherwise, check out these important facts you probably never knew about leonardo.info

Leonardo is a 501c3 nonprofit that serves a global network of distinguished scholars, artists, scientists, researchers and thinkers through our programs focused on interdisciplinary innovation in the ...

Visit leonardo.info

Key Findings

We analyzed Leonardo.info page load time and found that the first response time was 76 ms and then it took 947 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

leonardo.info performance score

32

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.0 s

4/100

10%

LCP (Largest Contentful Paint)

Value11.4 s

0/100

25%

SI (Speed Index)

Value8.2 s

20/100

10%

TBT (Total Blocking Time)

Value640 ms

47/100

30%

CLS (Cumulative Layout Shift)

Value0.067

97/100

15%

TTI (Time to Interactive)

Value16.4 s

5/100

10%

Network Requests Diagram

leonardo.info

76 ms

global.css

28 ms

sIFR-screen.css

35 ms

sifr.js

35 ms

sifr-addons.js

36 ms

Our browser made a total of 55 requests to load all elements on the main page. We found that 84% of them (46 requests) were addressed to the original Leonardo.info, 4% (2 requests) were made to Facebook.com and 2% (1 request) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (274 ms) relates to the external source Facebook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 176.0 kB (21%)

Content Size

839.5 kB

After Optimization

663.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Leonardo.info main page is 839.5 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. Images take 720.9 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 19.1 kB

  • Original 24.3 kB
  • After minification 16.2 kB
  • After compression 5.2 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. This page needs HTML code to be minified as it can gain 8.1 kB, which is 33% 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 19.1 kB or 79% of the original size.

Image Optimization

-13%

Potential reduce by 92.7 kB

  • Original 720.9 kB
  • After minification 628.3 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, Leonardo needs image optimization as it can save up to 92.7 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-65%

Potential reduce by 46.9 kB

  • Original 71.8 kB
  • After minification 70.5 kB
  • After compression 24.8 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 46.9 kB or 65% of the original size.

CSS Optimization

-77%

Potential reduce by 17.3 kB

  • Original 22.5 kB
  • After minification 17.7 kB
  • After compression 5.2 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. Leonardo.info needs all CSS files to be minified and compressed as it can save up to 17.3 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (28%)

Requests Now

54

After Optimization

39

  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Leonardo. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

leonardo.info

leonardo.info

76 ms

global.css

global.css

28 ms

sIFR-screen.css

sIFR-screen.css

35 ms

sifr.js

sifr.js

35 ms

sifr-addons.js

sifr-addons.js

36 ms

jquery-1.3.2.min.js

jquery-1.3.2.min.js

61 ms

leonardoScripts.js

leonardoScripts.js

34 ms

oct.js

oct.js

4 ms

screen.css

screen.css

17 ms

adsct

adsct

118 ms

adsct

adsct

70 ms

fbds.js

fbds.js

81 ms

banner.gif

banner.gif

77 ms

follow_us-a.png

follow_us-a.png

251 ms

40 ms

23 ms

bg-home.gif

bg-home.gif

31 ms

pointer.gif

pointer.gif

29 ms

leo-2016_v49n1_720x266.jpg

leo-2016_v49n1_720x266.jpg

115 ms

LEA-logo-reversed_84x150.jpg

LEA-logo-reversed_84x150.jpg

33 ms

laser-symbol-gold_84x150.jpg

laser-symbol-gold_84x150.jpg

31 ms

LMJ25_84x150.jpg

LMJ25_84x150.jpg

33 ms

leonardo-logo.gif

leonardo-logo.gif

44 ms

Facebook.png

Facebook.png

46 ms

CSPA-WEBnew3001.png

CSPA-WEBnew3001.png

64 ms

logo_USBCali.jpg

logo_USBCali.jpg

48 ms

footer-800px-udlogo-footer.png

footer-800px-udlogo-footer.png

48 ms

logo_ArtSci.jpg

logo_ArtSci.jpg

61 ms

digicult_logo.png

digicult_logo.png

64 ms

Djerassi-logo_small.jpg

Djerassi-logo_small.jpg

64 ms

logo_UCSC-art-sci.png

logo_UCSC-art-sci.png

65 ms

logo_polytech_small.jpg

logo_polytech_small.jpg

84 ms

logo_SAIC.jpg

logo_SAIC.jpg

84 ms

SVA_img600x151print_logo.png

SVA_img600x151print_logo.png

84 ms

logo_OCAD.jpg

logo_OCAD.jpg

84 ms

logo_CalArts.jpg

logo_CalArts.jpg

84 ms

logo_ASU-AM.jpg

logo_ASU-AM.jpg

98 ms

logo_eDREAM.jpg

logo_eDREAM.jpg

101 ms

logo_With_Ply_Uni.png

logo_With_Ply_Uni.png

98 ms

logo_UTD.jpg

logo_UTD.jpg

98 ms

logo_ESG.jpg

logo_ESG.jpg

100 ms

beallLogo_flatten.jpg

beallLogo_flatten.jpg

112 ms

ExclusiveAccess_ad.gif

ExclusiveAccess_ad.gif

116 ms

MDP_avatar_small.gif

MDP_avatar_small.gif

111 ms

logo_CCS.jpg

logo_CCS.jpg

114 ms

logo_Pomona.jpg

logo_Pomona.jpg

111 ms

logo_UnivAutoOcc.jpg

logo_UnivAutoOcc.jpg

120 ms

logo_UCDavis-ArtScience.jpg

logo_UCDavis-ArtScience.jpg

126 ms

logo_Minerva.jpg

logo_Minerva.jpg

126 ms

logo-UAL.jpg

logo-UAL.jpg

127 ms

104 ms

print.css

print.css

17 ms

print.css

print.css

17 ms

sIFR-print.css

sIFR-print.css

17 ms

274 ms

Accessibility Review

leonardo.info accessibility score

90

Accessibility Issues

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

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

leonardo.info best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

High

Missing source maps for large first-party JavaScript

SEO Factors

leonardo.info SEO score

82

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Leonardo.info 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 Leonardo.info 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

leonardo.info

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