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sustainable.mit.edu screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

sustainable.mit.edu

MIT Sustainable Supply Chain Lab - Building A Better Supply Chain

Page Load Speed

7.2 sec in total

First Response

102 ms

Resources Loaded

3.1 sec

Page Rendered

4 sec

sustainable.mit.edu screenshot

About Website

Visit sustainable.mit.edu now to see the best up-to-date Sustainable MIT content for United States and also check out these interesting facts you probably never knew about sustainable.mit.edu

Our goal at the MIT Sustainable Supply Chain Lab is to connect sustainable research outcomes to practical settings for companies.

Visit sustainable.mit.edu

Key Findings

We analyzed Sustainable.mit.edu page load time and found that the first response time was 102 ms and then it took 7.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

sustainable.mit.edu performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

53/100

10%

LCP (Largest Contentful Paint)

Value21.9 s

0/100

25%

SI (Speed Index)

Value18.2 s

0/100

10%

TBT (Total Blocking Time)

Value10,860 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.197

62/100

15%

TTI (Time to Interactive)

Value33.8 s

0/100

10%

Network Requests Diagram

sustainable.mit.edu

102 ms

sustainable.mit.edu

1716 ms

js

113 ms

mediaelementplayer-legacy.min.css

81 ms

wp-mediaelement.min.css

99 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 19% of them (13 requests) were addressed to the original Sustainable.mit.edu, 22% (15 requests) were made to Fonts.gstatic.com and 21% (14 requests) were made to I0.wp.com. The less responsive or slowest element that took the longest time to load (1.7 sec) belongs to the original domain Sustainable.mit.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 771.1 kB (27%)

Content Size

2.8 MB

After Optimization

2.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sustainable.mit.edu 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. Only a small number of websites need less resources to load. Images take 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 184.4 kB

  • Original 229.7 kB
  • After minification 226.5 kB
  • After compression 45.3 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 184.4 kB or 80% of the original size.

Image Optimization

-11%

Potential reduce by 212.8 kB

  • Original 1.9 MB
  • After minification 1.7 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. Obviously, Sustainable MIT needs image optimization as it can save up to 212.8 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

-11%

Potential reduce by 30.2 kB

  • Original 278.5 kB
  • After minification 278.5 kB
  • After compression 248.2 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 30.2 kB or 11% of the original size.

CSS Optimization

-74%

Potential reduce by 343.8 kB

  • Original 461.6 kB
  • After minification 460.8 kB
  • After compression 117.8 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. Sustainable.mit.edu needs all CSS files to be minified and compressed as it can save up to 343.8 kB or 74% of the original size.

Requests Breakdown

Number of requests can be reduced by 22 (47%)

Requests Now

47

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sustainable MIT. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sustainable.mit.edu

sustainable.mit.edu

102 ms

sustainable.mit.edu

sustainable.mit.edu

1716 ms

js

js

113 ms

mediaelementplayer-legacy.min.css

mediaelementplayer-legacy.min.css

81 ms

wp-mediaelement.min.css

wp-mediaelement.min.css

99 ms

menu-image.css

menu-image.css

139 ms

dashicons.min.css

dashicons.min.css

101 ms

css

css

103 ms

frontend-gtag.min.js

frontend-gtag.min.js

96 ms

js

js

92 ms

js

js

89 ms

jquery.min.js

jquery.min.js

81 ms

jquery-migrate.min.js

jquery-migrate.min.js

52 ms

scripts.min.js

scripts.min.js

255 ms

jquery.fitvids.js

jquery.fitvids.js

146 ms

easypiechart.js

easypiechart.js

146 ms

common.js

common.js

144 ms

e-202448.js

e-202448.js

86 ms

gtm.js

gtm.js

67 ms

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244 ms

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145 ms

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345 ms

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555 ms

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225 ms

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SSCL_sub-brand_lockup_two-line_rgb_black.png

708 ms

moldovahighway.jpg

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736 ms

mit-micro-logo-w.png

mit-micro-logo-w.png

238 ms

logo-cscmp-300x141-1.jpg

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126 ms

Xylem-logo-550x200-1.jpeg

Xylem-logo-550x200-1.jpeg

156 ms

unicef_twitter1.png

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156 ms

YcSIASkLFDkoiOLFeOvKhyk1fks5mXgztRifk692mRM.jpg

YcSIASkLFDkoiOLFeOvKhyk1fks5mXgztRifk692mRM.jpg

155 ms

Colgate-Palmolive-Logo-PNG-Transparent.png

Colgate-Palmolive-Logo-PNG-Transparent.png

155 ms

Dell_Logo.png

Dell_Logo.png

166 ms

Accenture-logo.png

Accenture-logo.png

167 ms

MITofficesust_2lines.png

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173 ms

Starbucks_Corporation_Logo_2011.svg_.png

Starbucks_Corporation_Logo_2011.svg_.png

173 ms

PG.png

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172 ms

CH_Robinson.png

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173 ms

Coppel.jpg

Coppel.jpg

182 ms

256px-LinkedIn_logo_initials.png

256px-LinkedIn_logo_initials.png

182 ms

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168 ms

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190 ms

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229 ms

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KFOlCnqEu92Fr1MmYUtfChc9.ttf

204 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElhgtl658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElhgtl658BQ.ttf

113 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEliotl658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEliotl658BQ.ttf

125 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElnQtl658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElnQtl658BQ.ttf

141 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElqotl658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElqotl658BQ.ttf

141 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEliosl658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEliosl658BQ.ttf

231 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElvQql658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElvQql658BQ.ttf

241 ms

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242 ms

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R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcElqoql658BQ.ttf

230 ms

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEloMql658BQ.ttf

R71RjywflP6FLr3gZx7K8UyuXDs9zVwDmXCb8lxYgmuii32UGoVldX6UgfjL4-3sMM_kB_qXSEXTJQCFLH5-_bcEloMql658BQ.ttf

242 ms

modules.woff

modules.woff

404 ms

www-player.css

www-player.css

180 ms

www-embed-player.js

www-embed-player.js

271 ms

base.js

base.js

271 ms

insight.min.js

insight.min.js

296 ms

style.min.css

style.min.css

174 ms

error_204

error_204

4 ms

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115 ms

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228 ms

insight.old.min.js

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6 ms

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insight_tag_errors.gif

137 ms

www-embed-player.js

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30 ms

base.js

base.js

137 ms

Accessibility Review

sustainable.mit.edu accessibility score

78

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

sustainable.mit.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

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

sustainable.mit.edu SEO score

93

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 Sustainable.mit.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 Sustainable.mit.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

sustainable.mit.edu

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