Tools & Wizards About Us
universalleonardo.org screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

universalleonardo.org

Universal Leonardo: Leonardo da Vinci online › Welcome to Universal Leonardo

Page Load Speed

2 sec in total

First Response

384 ms

Resources Loaded

1.5 sec

Page Rendered

96 ms

universalleonardo.org screenshot

About Website

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

Universal Leonardo is an exciting and innovative project aimed at deepening our understanding of Leonardo da Vinci through a series of international exhibitions linked together to illustrate the unity...

Visit universalleonardo.org

Key Findings

We analyzed Universalleonardo.org page load time and found that the first response time was 384 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

universalleonardo.org performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.8 s

84/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

universalleonardo.org

384 ms

default.css

101 ms

menu.css

191 ms

external.js

186 ms

lib.js

186 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that all of those requests were addressed to Universalleonardo.org and no external sources were called. The less responsive or slowest element that took the longest time to load (545 ms) belongs to the original domain Universalleonardo.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 219.4 kB (61%)

Content Size

361.6 kB

After Optimization

142.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Universalleonardo.org main page is 361.6 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. 15% of websites need less resources to load. Images take 257.2 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 6.2 kB

  • Original 8.8 kB
  • After minification 8.6 kB
  • After compression 2.6 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 6.2 kB or 70% of the original size.

Image Optimization

-51%

Potential reduce by 132.0 kB

  • Original 257.2 kB
  • After minification 125.3 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, Universal Leonardo needs image optimization as it can save up to 132.0 kB or 51% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-79%

Potential reduce by 20.8 kB

  • Original 26.5 kB
  • After minification 17.4 kB
  • After compression 5.7 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 20.8 kB or 79% of the original size.

CSS Optimization

-88%

Potential reduce by 60.5 kB

  • Original 69.0 kB
  • After minification 42.7 kB
  • After compression 8.6 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. Universalleonardo.org needs all CSS files to be minified and compressed as it can save up to 60.5 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (44%)

Requests Now

25

After Optimization

14

  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Universal 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 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

universalleonardo.org

universalleonardo.org

384 ms

default.css

default.css

101 ms

menu.css

menu.css

191 ms

external.js

external.js

186 ms

lib.js

lib.js

186 ms

popup.js

popup.js

185 ms

styleSwitcher.js

styleSwitcher.js

188 ms

ticker.js

ticker.js

183 ms

swfobject.js

swfobject.js

261 ms

base.css

base.css

182 ms

sophisto.css

sophisto.css

193 ms

printLogo.gif

printLogo.gif

122 ms

lay_menuGradient.gif

lay_menuGradient.gif

76 ms

icon_home_selected.gif

icon_home_selected.gif

106 ms

homeIntroBg.jpg

homeIntroBg.jpg

231 ms

leonardo_sings_the_blues_1.jpg

leonardo_sings_the_blues_1.jpg

129 ms

homeBodyLeft2.png

homeBodyLeft2.png

289 ms

csmLogo.gif

csmLogo.gif

153 ms

footSmallLogo.jpg

footSmallLogo.jpg

182 ms

niarchos_lo.gif

niarchos_lo.gif

222 ms

pastedGraphic.png

pastedGraphic.png

545 ms

noFlashNav.gif

noFlashNav.gif

304 ms

noFlashLogo.jpg

noFlashLogo.jpg

258 ms

print.css

print.css

102 ms

medium.css

medium.css

101 ms

large.css

large.css

78 ms

Accessibility Review

universalleonardo.org accessibility score

84

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.

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

<object> elements do not have alternate text

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Some elements have a [tabindex] value greater than 0

Best Practices

universalleonardo.org 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

SEO Factors

universalleonardo.org SEO score

67

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

Document uses plugins

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 Universalleonardo.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 Universalleonardo.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

universalleonardo.org

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