Tools & Wizards About Us
rad.nd.edu screenshot

Report Summary

  • 57

    Performance

    Renders faster than
    73% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 86% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

rad.nd.edu

Notre Dame Radiation Laboratory // University of Notre Dame

Page Load Speed

569 ms in total

First Response

33 ms

Resources Loaded

356 ms

Page Rendered

180 ms

rad.nd.edu screenshot

About Website

Welcome to rad.nd.edu homepage info - get ready to check Rad Nd best content for United States right away, or after learning these important things about rad.nd.edu

Notre Dame Radiation Laboratory partners with the Department of Energy's Office of Science to study Radiation Chemistry.

Visit rad.nd.edu

Key Findings

We analyzed Rad.nd.edu page load time and found that the first response time was 33 ms and then it took 536 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.

Performance Metrics

rad.nd.edu performance score

57

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

85/100

10%

LCP (Largest Contentful Paint)

Value4.1 s

48/100

25%

SI (Speed Index)

Value2.3 s

99/100

10%

TBT (Total Blocking Time)

Value620 ms

48/100

30%

CLS (Cumulative Layout Shift)

Value0.277

44/100

15%

TTI (Time to Interactive)

Value6.7 s

56/100

10%

Network Requests Diagram

rad.nd.edu

33 ms

rad.nd.edu

26 ms

site.1698423833.css

3 ms

js

150 ms

jquery.min.js

27 ms

Our browser made a total of 29 requests to load all elements on the main page. We found that 52% of them (15 requests) were addressed to the original Rad.nd.edu, 14% (4 requests) were made to Fonts.gstatic.com and 10% (3 requests) were made to Static.nd.edu. The less responsive or slowest element that took the longest time to load (159 ms) relates to the external source Static.nd.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 41.1 kB (14%)

Content Size

294.3 kB

After Optimization

253.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rad.nd.edu main page is 294.3 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. 35% of websites need less resources to load. Images take 179.4 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 33.9 kB

  • Original 50.2 kB
  • After minification 49.0 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 33.9 kB or 68% of the original size.

Image Optimization

-3%

Potential reduce by 4.9 kB

  • Original 179.4 kB
  • After minification 174.5 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. Rad Nd images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 721 B

  • Original 55.2 kB
  • After minification 55.2 kB
  • After compression 54.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-15%

Potential reduce by 1.5 kB

  • Original 9.6 kB
  • After minification 9.6 kB
  • After compression 8.1 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. Rad.nd.edu needs all CSS files to be minified and compressed as it can save up to 1.5 kB or 15% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (27%)

Requests Now

22

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 22 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rad Nd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

rad.nd.edu

rad.nd.edu

33 ms

rad.nd.edu

rad.nd.edu

26 ms

site.1698423833.css

site.1698423833.css

3 ms

js

js

150 ms

jquery.min.js

jquery.min.js

27 ms

ndt.js

ndt.js

11 ms

site.1600091423.js

site.1600091423.js

18 ms

css

css

38 ms

ndt-mobile.css

ndt-mobile.css

4 ms

analytics.js

analytics.js

141 ms

132 ms

noise5.png

noise5.png

105 ms

dept-nd-white.png

dept-nd-white.png

159 ms

ndmark300.png

ndmark300.png

31 ms

kiva_ford_nd_magazine.jpeg

kiva_ford_nd_magazine.jpeg

38 ms

kamat_prashant_2021.jpg

kamat_prashant_2021.jpg

31 ms

prashant_kamat.jpg

prashant_kamat.jpg

57 ms

dubose_jeff_pro_1_.jpg

dubose_jeff_pro_1_.jpg

57 ms

energy_crest_footer.png

energy_crest_footer.png

60 ms

ndmark300.png

ndmark300.png

60 ms

feature_photo_example2.jpg

feature_photo_example2.jpg

88 ms

dept-ores-white.png

dept-ores-white.png

149 ms

NaPDcZTIAOhVxoMyOr9n_E7ffHjDGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffHjDGItzZg.ttf

65 ms

NaPecZTIAOhVxoMyOr9n_E7fdMPmCA.ttf

NaPecZTIAOhVxoMyOr9n_E7fdMPmCA.ttf

68 ms

NaPDcZTIAOhVxoMyOr9n_E7ffGjEGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffGjEGItzZg.ttf

75 ms

NaPDcZTIAOhVxoMyOr9n_E7ffAzHGItzZg.ttf

NaPDcZTIAOhVxoMyOr9n_E7ffAzHGItzZg.ttf

74 ms

nd.v2.woff

nd.v2.woff

60 ms

collect

collect

19 ms

js

js

58 ms

Accessibility Review

rad.nd.edu accessibility score

95

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

rad.nd.edu 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

rad.nd.edu SEO score

93

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rad.nd.edu can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Rad.nd.edu 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

rad.nd.edu

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