Tools & Wizards About Us
chbe.northwestern.edu screenshot

Report Summary

  • 19

    Performance

    Renders faster than
    36% of other websites

  • 96

    Accessibility

    Visual factors better than
    that of 88% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

chbe.northwestern.edu

Chemical & Biological Engineering | Northwestern Engineering

Page Load Speed

2.4 sec in total

First Response

86 ms

Resources Loaded

1.6 sec

Page Rendered

687 ms

chbe.northwestern.edu screenshot

About Website

Click here to check amazing Chbe Northwestern content for United States. Otherwise, check out these important facts you probably never knew about chbe.northwestern.edu

Learn about the Department of Chemical and Biological Engineering at McCormick School of Engineering at Northwestern University.

Visit chbe.northwestern.edu

Key Findings

We analyzed Chbe.northwestern.edu page load time and found that the first response time was 86 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

chbe.northwestern.edu performance score

19

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value15.9 s

0/100

25%

SI (Speed Index)

Value13.6 s

2/100

10%

TBT (Total Blocking Time)

Value2,510 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.061

97/100

15%

TTI (Time to Interactive)

Value29.1 s

0/100

10%

Network Requests Diagram

chbe.northwestern.edu

86 ms

www.chbe.northwestern.edu

94 ms

86 ms

145 ms

normalize.css

30 ms

Our browser made a total of 67 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Chbe.northwestern.edu, 61% (41 requests) were made to Mccormick.northwestern.edu and 15% (10 requests) were made to Common.northwestern.edu. The less responsive or slowest element that took the longest time to load (804 ms) relates to the external source Mccormick.northwestern.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 49.4 kB (2%)

Content Size

2.7 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Chbe.northwestern.edu main page is 2.7 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. 80% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 38.1 kB

  • Original 46.9 kB
  • After minification 45.3 kB
  • After compression 8.8 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 38.1 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 521 B

  • Original 2.3 MB
  • After minification 2.3 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. Chbe Northwestern images are well optimized though.

JavaScript Optimization

-2%

Potential reduce by 5.8 kB

  • Original 268.9 kB
  • After minification 268.9 kB
  • After compression 263.1 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

-5%

Potential reduce by 4.9 kB

  • Original 103.5 kB
  • After minification 103.5 kB
  • After compression 98.6 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. Chbe.northwestern.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 36 (67%)

Requests Now

54

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 54 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chbe 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 20 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

chbe.northwestern.edu

chbe.northwestern.edu

86 ms

www.chbe.northwestern.edu

www.chbe.northwestern.edu

94 ms

86 ms

145 ms

normalize.css

normalize.css

30 ms

jquery-slick.css

jquery-slick.css

57 ms

default.css

default.css

100 ms

layout.css

layout.css

129 ms

full-width.css

full-width.css

94 ms

home.css

home.css

97 ms

dept-2019.css

dept-2019.css

99 ms

jquery-2.1.0.min.js

jquery-2.1.0.min.js

177 ms

modernizr.js

modernizr.js

192 ms

jquery-footable.min.js

jquery-footable.min.js

320 ms

breakpoints.js

breakpoints.js

318 ms

lazysizes.min.js

lazysizes.min.js

319 ms

department-2019.js

department-2019.js

319 ms

jquery-slick-1.3.6.js

jquery-slick-1.3.6.js

351 ms

restive.min.js

restive.min.js

351 ms

video-helpers.1.1.js

video-helpers.1.1.js

350 ms

full-width.js

full-width.js

350 ms

jquery.validate-form.js

jquery.validate-form.js

350 ms

jquery.fitvids.js

jquery.fitvids.js

350 ms

mti-tracking.js

mti-tracking.js

418 ms

gtm.js

gtm.js

288 ms

arrow-down-white.svg

arrow-down-white.svg

396 ms

northwestern-logo-global-nav.svg

northwestern-logo-global-nav.svg

254 ms

stitch-short.png

stitch-short.png

251 ms

engineering-logo.svg

engineering-logo.svg

251 ms

northwestern-to-lead-midwestern-carbon-capture-hub-rotation.jpg

northwestern-to-lead-midwestern-carbon-capture-hub-rotation.jpg

384 ms

linsey-seitz-wins-acs-catl-early-career-award-rotation.jpg

linsey-seitz-wins-acs-catl-early-career-award-rotation.jpg

444 ms

jeffrey-lopez-receives-prestigious-nsf-career-award-rotation.jpg

jeffrey-lopez-receives-prestigious-nsf-career-award-rotation.jpg

444 ms

engineers-abroad-chbe-rotation.jpg

engineers-abroad-chbe-rotation.jpg

804 ms

divider-dashed.png

divider-dashed.png

361 ms

index-research-background.jpg

index-research-background.jpg

399 ms

whole-brain.jpg

whole-brain.jpg

598 ms

stitch-short-white.png

stitch-short-white.png

439 ms

northwestern-logo.svg

northwestern-logo.svg

439 ms

arrows-nav-docs.svg

arrows-nav-docs.svg

494 ms

footer-social.svg

footer-social.svg

490 ms

search-purple.svg

search-purple.svg

387 ms

arrow-down-ltpurple.svg

arrow-down-ltpurple.svg

386 ms

bullet.png

bullet.png

396 ms

AkkuratProRegular.woff

AkkuratProRegular.woff

439 ms

AkkuratProBold.woff

AkkuratProBold.woff

435 ms

CamptonBook.woff

CamptonBook.woff

346 ms

CamptonBold.woff

CamptonBold.woff

371 ms

CamptonExtraBold.woff

CamptonExtraBold.woff

357 ms

CamptonExtraLight.woff

CamptonExtraLight.woff

370 ms

pfdinstencil-light.woff

pfdinstencil-light.woff

356 ms

ga.js

ga.js

108 ms

left-dept.svg

left-dept.svg

174 ms

ajax-loader.gif

ajax-loader.gif

226 ms

trackingCode.js

trackingCode.js

86 ms

SX-PCO1e8Co

SX-PCO1e8Co

44 ms

slick.woff

slick.woff

200 ms

SX-PCO1e8Co

SX-PCO1e8Co

121 ms

__utm.gif

__utm.gif

69 ms

__utm.gif

__utm.gif

86 ms

www-player.css

www-player.css

55 ms

www-embed-player.js

www-embed-player.js

76 ms

base.js

base.js

112 ms

ad_status.js

ad_status.js

191 ms

lA2ntTx-2QuHkXZslM9sAF03Z9lhVUC55dA1orjIb5A.js

lA2ntTx-2QuHkXZslM9sAF03Z9lhVUC55dA1orjIb5A.js

165 ms

embed.js

embed.js

59 ms

layout-print.css

layout-print.css

52 ms

id

id

37 ms

Accessibility Review

chbe.northwestern.edu accessibility score

96

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

Best Practices

chbe.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

chbe.northwestern.edu SEO score

83

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

High

Tap targets are not sized appropriately

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 Chbe.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 Chbe.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

chbe.northwestern.edu

Open Graph description is not detected on the main page of Chbe Northwestern. 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: