Tools & Wizards About Us
sustainability.wustl.edu screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 79% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

sustainability.wustl.edu

Home | Sustainability | Washington University in St. Louis

Page Load Speed

2.5 sec in total

First Response

799 ms

Resources Loaded

1.5 sec

Page Rendered

212 ms

sustainability.wustl.edu screenshot

About Website

Click here to check amazing Sustainability Wu St L content for United States. Otherwise, check out these important facts you probably never knew about sustainability.wustl.edu

Washington University in St. Louis is fully committed to being a national leader in sustainability, a core priority that runs through all aspects of our...

Visit sustainability.wustl.edu

Key Findings

We analyzed Sustainability.wustl.edu page load time and found that the first response time was 799 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

sustainability.wustl.edu performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.2 s

19/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value14.1 s

1/100

10%

TBT (Total Blocking Time)

Value330 ms

76/100

30%

CLS (Cumulative Layout Shift)

Value0.009

100/100

15%

TTI (Time to Interactive)

Value12.0 s

16/100

10%

Network Requests Diagram

sustainability.wustl.edu

799 ms

modernizr-2.6.1-respond-1.1.0.min.js

100 ms

css

26 ms

bootstrap.css

199 ms

bootstrap-responsive.css

116 ms

Our browser made a total of 72 requests to load all elements on the main page. We found that 88% of them (63 requests) were addressed to the original Sustainability.wustl.edu, 8% (6 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (799 ms) belongs to the original domain Sustainability.wustl.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 596.3 kB (18%)

Content Size

3.3 MB

After Optimization

2.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sustainability.wustl.edu main page is 3.3 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 2.6 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 27.4 kB

  • Original 35.5 kB
  • After minification 33.5 kB
  • After compression 8.1 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 27.4 kB or 77% of the original size.

Image Optimization

-1%

Potential reduce by 36.2 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. Sustainability Wu St L images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 333.6 kB

  • Original 477.3 kB
  • After minification 434.6 kB
  • After compression 143.7 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 333.6 kB or 70% of the original size.

CSS Optimization

-85%

Potential reduce by 199.1 kB

  • Original 234.7 kB
  • After minification 185.8 kB
  • After compression 35.6 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. Sustainability.wustl.edu needs all CSS files to be minified and compressed as it can save up to 199.1 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (48%)

Requests Now

65

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sustainability Wu St L. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sustainability.wustl.edu

sustainability.wustl.edu

799 ms

modernizr-2.6.1-respond-1.1.0.min.js

modernizr-2.6.1-respond-1.1.0.min.js

100 ms

css

css

26 ms

bootstrap.css

bootstrap.css

199 ms

bootstrap-responsive.css

bootstrap-responsive.css

116 ms

style.css

style.css

69 ms

style.css

style.css

132 ms

bx_styles.css

bx_styles.css

69 ms

events_manager.css

events_manager.css

140 ms

user.css

user.css

114 ms

jquery.js

jquery.js

226 ms

jquery-migrate.min.js

jquery-migrate.min.js

138 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

165 ms

core.min.js

core.min.js

162 ms

widget.min.js

widget.min.js

163 ms

position.min.js

position.min.js

163 ms

mouse.min.js

mouse.min.js

218 ms

sortable.min.js

sortable.min.js

239 ms

datepicker.min.js

datepicker.min.js

241 ms

menu.min.js

menu.min.js

217 ms

autocomplete.min.js

autocomplete.min.js

238 ms

resizable.min.js

resizable.min.js

239 ms

draggable.min.js

draggable.min.js

259 ms

button.min.js

button.min.js

253 ms

dialog.min.js

dialog.min.js

255 ms

events-manager.js

events-manager.js

321 ms

bootstrap.js

bootstrap.js

288 ms

helper.js

helper.js

256 ms

plugins.js

plugins.js

286 ms

script.js

script.js

288 ms

accordion.min.js

accordion.min.js

275 ms

wp-embed.min.js

wp-embed.min.js

276 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

110 ms

bg_body.png

bg_body.png

161 ms

wustl-bg-repeatX.jpg

wustl-bg-repeatX.jpg

164 ms

WUSTL-logo-1line-295.png

WUSTL-logo-1line-295.png

160 ms

WUSTL-logo.png

WUSTL-logo.png

163 ms

SUST-rev-1line.png

SUST-rev-1line.png

161 ms

icon-search.png

icon-search.png

163 ms

fb-follow.png

fb-follow.png

163 ms

150123_GM_Banner_Website_PostLaunch1.jpg

150123_GM_Banner_Website_PostLaunch1.jpg

330 ms

Rotator_Lofts.jpg

Rotator_Lofts.jpg

340 ms

SolarRibbonCutting_HomePage.jpg

SolarRibbonCutting_HomePage.jpg

302 ms

GreenWasteStation_Homepage.jpg

GreenWasteStation_Homepage.jpg

345 ms

hero-TurnItOff.jpg

hero-TurnItOff.jpg

163 ms

green-rehab-tn.jpg

green-rehab-tn.jpg

163 ms

feature-SqFt-energy.jpg

feature-SqFt-energy.jpg

165 ms

feaure-LessIsMore.jpg

feaure-LessIsMore.jpg

202 ms

WUSTL-Sustainability-Newsletter-11.jpg

WUSTL-Sustainability-Newsletter-11.jpg

202 ms

150918_jaa_green_monday_JC-150x150.jpg

150918_jaa_green_monday_JC-150x150.jpg

204 ms

08fe6f59-209a-4a4a-a375-3b6e3cb570d5-e1455693895274-150x150.png

08fe6f59-209a-4a4a-a375-3b6e3cb570d5-e1455693895274-150x150.png

220 ms

6c409ae6-8e66-4685-b0b3-5a82b4da0c9a-e1455692030435-150x150.jpg

6c409ae6-8e66-4685-b0b3-5a82b4da0c9a-e1455692030435-150x150.jpg

233 ms

Custodial-150x150.jpg

Custodial-150x150.jpg

259 ms

Logo-01-150x150.jpg

Logo-01-150x150.jpg

266 ms

IMG_1072-e1455694786716-150x150.jpg

IMG_1072-e1455694786716-150x150.jpg

293 ms

Composting-at-WU-Nursery-School-150x150.jpg

Composting-at-WU-Nursery-School-150x150.jpg

300 ms

Winter-Commuting-150x150.jpg

Winter-Commuting-150x150.jpg

326 ms

Strategic-Plan-e1454709817568-150x150.png

Strategic-Plan-e1454709817568-150x150.png

331 ms

Shoes_Water-150x150.jpg

Shoes_Water-150x150.jpg

332 ms

LKf8nhXsWg5ybwEGXk8UBQ.woff

LKf8nhXsWg5ybwEGXk8UBQ.woff

142 ms

0XxGQsSc1g4rdRdjJKZrNBsxEYwM7FgeyaSgU71cLG0.woff

0XxGQsSc1g4rdRdjJKZrNBsxEYwM7FgeyaSgU71cLG0.woff

143 ms

8x8S7gQMbbduiGv8gbUJ0Q.woff

8x8S7gQMbbduiGv8gbUJ0Q.woff

144 ms

UyYrYy3ltEffJV9QueSi4RdbPw3QSf9R-kE0EsQUn2A.woff

UyYrYy3ltEffJV9QueSi4RdbPw3QSf9R-kE0EsQUn2A.woff

145 ms

sDRi4fY9bOiJUbgq53yZCfesZW2xOQ-xsNqO47m55DA.woff

sDRi4fY9bOiJUbgq53yZCfesZW2xOQ-xsNqO47m55DA.woff

136 ms

QABk9IxT-LFTJ_dQzv7xpIbN6UDyHWBl620a-IRfuBk.woff

QABk9IxT-LFTJ_dQzv7xpIbN6UDyHWBl620a-IRfuBk.woff

134 ms

body-bottom-repeatX.jpg

body-bottom-repeatX.jpg

342 ms

logo-wustl-2linerev.png

logo-wustl-2linerev.png

338 ms

ga.js

ga.js

127 ms

bullets.png

bullets.png

210 ms

gray_prev.png

gray_prev.png

209 ms

gray_next.png

gray_next.png

212 ms

__utm.gif

__utm.gif

11 ms

Accessibility Review

sustainability.wustl.edu accessibility score

92

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

sustainability.wustl.edu best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

sustainability.wustl.edu 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

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 Sustainability.wustl.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 Sustainability.wustl.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

sustainability.wustl.edu

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