Report Summary

  • 52

    Performance

    Renders faster than
    70% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

medicine.duke.edu

Home | Duke Department of Medicine

Page Load Speed

1.6 sec in total

First Response

183 ms

Resources Loaded

1 sec

Page Rendered

329 ms

medicine.duke.edu screenshot

About Website

Visit medicine.duke.edu now to see the best up-to-date Medicine Duke content for United States and also check out these interesting facts you probably never knew about medicine.duke.edu

Visit medicine.duke.edu

Key Findings

We analyzed Medicine.duke.edu page load time and found that the first response time was 183 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 25% of websites can load faster.

Performance Metrics

medicine.duke.edu performance score

52

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.3 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.1 s

1/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value8.6 s

37/100

10%

Network Requests Diagram

medicine.duke.edu

183 ms

ajax-progress.module.css

36 ms

align.module.css

57 ms

autocomplete-loading.module.css

74 ms

fieldgroup.module.css

77 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 77% of them (56 requests) were addressed to the original Medicine.duke.edu, 8% (6 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (415 ms) belongs to the original domain Medicine.duke.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 437.9 kB (28%)

Content Size

1.6 MB

After Optimization

1.2 MB

In fact, the total size of Medicine.duke.edu main page is 1.6 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 43.3 kB

  • Original 52.3 kB
  • After minification 44.6 kB
  • After compression 9.0 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 7.8 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 43.3 kB or 83% of the original size.

Image Optimization

-11%

Potential reduce by 120.5 kB

  • Original 1.1 MB
  • After minification 960.9 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, Medicine Duke needs image optimization as it can save up to 120.5 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-1%

Potential reduce by 927 B

  • Original 106.0 kB
  • After minification 105.9 kB
  • After compression 105.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-78%

Potential reduce by 273.2 kB

  • Original 351.7 kB
  • After minification 350.4 kB
  • After compression 78.4 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. Medicine.duke.edu needs all CSS files to be minified and compressed as it can save up to 273.2 kB or 78% of the original size.

Requests Breakdown

Number of requests can be reduced by 46 (72%)

Requests Now

64

After Optimization

18

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Medicine Duke. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 35 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

medicine.duke.edu accessibility score

100

Accessibility Issues

Best Practices

medicine.duke.edu 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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

medicine.duke.edu SEO score

79

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

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 Medicine.duke.edu 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 Medicine.duke.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

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