Tools & Wizards About Us
nephrohub.org screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    58% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 85% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

nephrohub.org

Home: nephroHUB: Feinberg School of Medicine: Northwestern University

Page Load Speed

1.7 sec in total

First Response

92 ms

Resources Loaded

924 ms

Page Rendered

694 ms

nephrohub.org screenshot

About Website

Click here to check amazing NephroHUB content. Otherwise, check out these important facts you probably never knew about nephrohub.org

The Northwestern University George M. O’Brien Kidney Core Center supports kidney disease research into prevention, treatment and, eventually, cures.

Visit nephrohub.org

Key Findings

We analyzed Nephrohub.org page load time and found that the first response time was 92 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 30% of websites can load faster.

Performance Metrics

nephrohub.org performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value9.0 s

1/100

25%

SI (Speed Index)

Value3.4 s

89/100

10%

TBT (Total Blocking Time)

Value1,870 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

Network Requests Diagram

nephrohub.org

92 ms

www.nephrohub.org

80 ms

bootstrap.min.css

86 ms

all.css

236 ms

css

99 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 21% of them (9 requests) were addressed to the original Nephrohub.org, 24% (10 requests) were made to Deptcommon.fsm.northwestern.edu and 12% (5 requests) were made to Medtargetsystem.com. The less responsive or slowest element that took the longest time to load (470 ms) relates to the external source Common.northwestern.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.2 kB (3%)

Content Size

2.8 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nephrohub.org main page is 2.8 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. 45% of websites need less resources to load. Images take 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 22.8 kB

  • Original 30.4 kB
  • After minification 25.7 kB
  • After compression 7.6 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. This page needs HTML code to be minified as it can gain 4.7 kB, which is 15% 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 22.8 kB or 75% of the original size.

Image Optimization

-3%

Potential reduce by 71.5 kB

  • Original 2.6 MB
  • After minification 2.5 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. NephroHUB images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.7 kB

  • Original 132.3 kB
  • After minification 131.5 kB
  • After compression 129.6 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

-1%

Potential reduce by 258 B

  • Original 20.2 kB
  • After minification 20.1 kB
  • After compression 20.0 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. Nephrohub.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (55%)

Requests Now

33

After Optimization

15

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of NephroHUB. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nephrohub.org

nephrohub.org

92 ms

www.nephrohub.org

www.nephrohub.org

80 ms

bootstrap.min.css

bootstrap.min.css

86 ms

all.css

all.css

236 ms

css

css

99 ms

css

css

104 ms

landing-page.css

landing-page.css

124 ms

v4.0.css

v4.0.css

55 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

89 ms

popper.min.js

popper.min.js

137 ms

bootstrap.min.js

bootstrap.min.js

64 ms

common.js

common.js

103 ms

slick-home.js

slick-home.js

104 ms

slick-slider.js

slick-slider.js

112 ms

slick.min.js

slick.min.js

60 ms

common.js

common.js

100 ms

slick-home.js

slick-home.js

106 ms

landing-page.css

landing-page.css

120 ms

slick-slider.js

slick-slider.js

128 ms

beacon.js

beacon.js

156 ms

ShanaOKelley.jpg

ShanaOKelley.jpg

265 ms

Northwestern_horizontal_white-trimmed.svg

Northwestern_horizontal_white-trimmed.svg

97 ms

nephrology-doc-patient.jpg

nephrology-doc-patient.jpg

144 ms

cores-360.jpg

cores-360.jpg

198 ms

world-kidney-charity-ride-360.jpg

world-kidney-charity-ride-360.jpg

198 ms

kidney-cell-360.jpg

kidney-cell-360.jpg

198 ms

gtm.js

gtm.js

218 ms

slashes-purple-bg.gif

slashes-purple-bg.gif

470 ms

podcast-icon.svg

podcast-icon.svg

268 ms

grey-slash.svg

grey-slash.svg

325 ms

Feinberg-linear-white-240.svg

Feinberg-linear-white-240.svg

128 ms

renal-ortex-hero.jpg

renal-ortex-hero.jpg

321 ms

fa-solid-900.woff

fa-solid-900.woff

166 ms

fa-regular-400.woff

fa-regular-400.woff

241 ms

fa-brands-400.woff

fa-brands-400.woff

376 ms

66 ms

analytics.js

analytics.js

81 ms

js

js

82 ms

signal.js

signal.js

32 ms

fp.js

fp.js

30 ms

_itu.png

_itu.png

131 ms

linkid.js

linkid.js

117 ms

Accessibility Review

nephrohub.org accessibility score

94

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.

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

nephrohub.org 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

nephrohub.org SEO score

92

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nephrohub.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 Nephrohub.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

nephrohub.org

Open Graph data is detected on the main page of NephroHUB. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: