Tools & Wizards About Us

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 83% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

preventivemedicine.northwestern.edu

Home: Department of Preventive Medicine: Feinberg School of Medicine

Page Load Speed

1.4 sec in total

First Response

87 ms

Resources Loaded

804 ms

Page Rendered

460 ms

About Website

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

Find out about the training and research missions of the Department of Preventive Medicine at Northwestern University Feinberg School of Medicine.

Visit preventivemedicine.northwestern.edu

Key Findings

We analyzed Preventivemedicine.northwestern.edu page load time and found that the first response time was 87 ms and then it took 1.3 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

preventivemedicine.northwestern.edu performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

38/100

10%

LCP (Largest Contentful Paint)

Value14.2 s

0/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value10.6 s

23/100

10%

Network Requests Diagram

preventivemedicine.northwestern.edu

87 ms

preventivemedicine.northwestern.edu

125 ms

www.preventivemedicine.northwestern.edu

142 ms

bootstrap.min.css

68 ms

all.css

64 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 24% of them (11 requests) were addressed to the original Preventivemedicine.northwestern.edu, 11% (5 requests) were made to Deptcommon.fsm.northwestern.edu and 11% (5 requests) were made to Medtargetsystem.com. The less responsive or slowest element that took the longest time to load (304 ms) relates to the external source News.feinberg.northwestern.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 246.9 kB (11%)

Content Size

2.2 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Preventivemedicine.northwestern.edu main page is 2.2 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. 50% of websites need less resources to load. Images take 2.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 31.4 kB

  • Original 39.8 kB
  • After minification 32.7 kB
  • After compression 8.5 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 7.1 kB, which is 18% 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 31.4 kB or 79% of the original size.

Image Optimization

-9%

Potential reduce by 183.2 kB

  • Original 2.0 MB
  • After minification 1.8 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. Preventive Medicine Northwestern images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 2.6 kB

  • Original 110.6 kB
  • After minification 110.4 kB
  • After compression 107.9 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

-60%

Potential reduce by 29.7 kB

  • Original 49.8 kB
  • After minification 49.6 kB
  • After compression 20.1 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. Preventivemedicine.northwestern.edu needs all CSS files to be minified and compressed as it can save up to 29.7 kB or 60% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (40%)

Requests Now

35

After Optimization

21

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preventive Medicine Northwestern. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

preventivemedicine.northwestern.edu accessibility score

94

Accessibility Issues

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

High

<object> elements do not have alternate text

Best Practices

preventivemedicine.northwestern.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

preventivemedicine.northwestern.edu SEO score

100

Search Engine Optimization Advices

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 Preventivemedicine.northwestern.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 Preventivemedicine.northwestern.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 data is detected on the main page of Preventive Medicine Northwestern. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: