Tools & Wizards About Us
vis.csail.mit.edu screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 92

    SEO

    Google-friendlier than
    75% of websites

vis.csail.mit.edu

MIT Visualization Group | We use visualization as a petri dish to study intelligence augmentation: how can computation help amplify our cognition and ...

Page Load Speed

1.5 sec in total

First Response

61 ms

Resources Loaded

547 ms

Page Rendered

925 ms

vis.csail.mit.edu screenshot

About Website

Click here to check amazing Vis Csail MIT content for United States. Otherwise, check out these important facts you probably never knew about vis.csail.mit.edu

We use visualization as a petri dish to study intelligence augmentation: how can computation help amplify our cognition and creativity, while respecting our agency?

Visit vis.csail.mit.edu

Key Findings

We analyzed Vis.csail.mit.edu page load time and found that the first response time was 61 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

vis.csail.mit.edu performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

78/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

72/100

25%

SI (Speed Index)

Value3.3 s

91/100

10%

TBT (Total Blocking Time)

Value120 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.291

41/100

15%

TTI (Time to Interactive)

Value5.2 s

75/100

10%

Network Requests Diagram

vis.csail.mit.edu

61 ms

vis.csail.mit.edu

90 ms

js

95 ms

css2

37 ms

styles2.1.css

21 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 77% of them (48 requests) were addressed to the original Vis.csail.mit.edu, 13% (8 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (289 ms) belongs to the original domain Vis.csail.mit.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 46.4 kB (1%)

Content Size

6.0 MB

After Optimization

6.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Vis.csail.mit.edu main page is 6.0 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. 85% 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 5.9 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 29.3 kB

  • Original 36.1 kB
  • After minification 27.3 kB
  • After compression 6.8 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. This page needs HTML code to be minified as it can gain 8.8 kB, which is 24% 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 29.3 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 17.0 kB

  • Original 5.9 MB
  • After minification 5.9 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. Vis Csail MIT images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 56 B

  • Original 25.3 kB
  • After minification 25.3 kB
  • After compression 25.3 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

-1%

Potential reduce by 81 B

  • Original 7.3 kB
  • After minification 7.3 kB
  • After compression 7.2 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. Vis.csail.mit.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (6%)

Requests Now

52

After Optimization

49

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vis Csail 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 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

vis.csail.mit.edu

vis.csail.mit.edu

61 ms

vis.csail.mit.edu

vis.csail.mit.edu

90 ms

js

js

95 ms

css2

css2

37 ms

styles2.1.css

styles2.1.css

21 ms

d0c18b213e.js

d0c18b213e.js

64 ms

csail.png

csail.png

23 ms

arvindsatya.jpg

arvindsatya.jpg

157 ms

crosenth.jpg

crosenth.jpg

155 ms

hbang.jpg

hbang.jpg

196 ms

aboggust.jpg

aboggust.jpg

153 ms

mzc219.jpg

mzc219.jpg

204 ms

amyfox.jpg

amyfox.jpg

155 ms

gracefh.jpg

gracefh.jpg

158 ms

efaith1.jpg

efaith1.jpg

229 ms

meic1212.jpg

meic1212.jpg

158 ms

ljewel.jpg

ljewel.jpg

203 ms

ipedraza.jpg

ipedraza.jpg

193 ms

jopo.jpg

jopo.jpg

196 ms

dwootton.jpg

dwootton.jpg

203 ms

sjzheng.jpg

sjzheng.jpg

199 ms

jzong.jpg

jzong.jpg

226 ms

crystall.jpg

crystall.jpg

203 ms

lundgard.jpg

lundgard.jpg

227 ms

vineetpa.jpg

vineetpa.jpg

226 ms

peck.jpg

peck.jpg

225 ms

hsuresh.jpg

hsuresh.jpg

225 ms

nathalie_vladis.jpg

nathalie_vladis.jpg

255 ms

annaad.jpg

annaad.jpg

257 ms

ktbacher.jpg

ktbacher.jpg

257 ms

dhiraj.jpg

dhiraj.jpg

259 ms

mattblanco.jpg

mattblanco.jpg

257 ms

annieb22.jpg

annieb22.jpg

255 ms

tiffc.jpg

tiffc.jpg

279 ms

soominc.jpg

soominc.jpg

260 ms

nava.jpg

nava.jpg

289 ms

katmh.jpg

katmh.jpg

278 ms

jwjang.jpg

jwjang.jpg

278 ms

jonsh.jpg

jonsh.jpg

278 ms

nicbk.jpg

nicbk.jpg

278 ms

houssam.jpg

houssam.jpg

288 ms

ksiyoung.jpg

ksiyoung.jpg

287 ms

allenlee.jpg

allenlee.jpg

286 ms

js

js

100 ms

analytics.js

analytics.js

19 ms

collect

collect

46 ms

ajmeurer.jpg

ajmeurer.jpg

143 ms

sovesh.jpg

sovesh.jpg

152 ms

monterde.jpg

monterde.jpg

151 ms

rneogy.jpg

rneogy.jpg

150 ms

esefah.jpg

esefah.jpg

149 ms

5aUu9_-1phKLFgshYDvh6Vwt5fFPmE0.ttf

5aUu9_-1phKLFgshYDvh6Vwt5fFPmE0.ttf

47 ms

5aUz9_-1phKLFgshYDvh6Vwt3V0.ttf

5aUz9_-1phKLFgshYDvh6Vwt3V0.ttf

65 ms

5aUu9_-1phKLFgshYDvh6Vwt5alOmE0.ttf

5aUu9_-1phKLFgshYDvh6Vwt5alOmE0.ttf

76 ms

5aUu9_-1phKLFgshYDvh6Vwt5eFImE0.ttf

5aUu9_-1phKLFgshYDvh6Vwt5eFImE0.ttf

100 ms

5aUu9_-1phKLFgshYDvh6Vwt5f1LmE0.ttf

5aUu9_-1phKLFgshYDvh6Vwt5f1LmE0.ttf

132 ms

mtGm4-RGJqfMvt7P8FUr0Q1j-Hf1DvJA0iQ.ttf

mtGm4-RGJqfMvt7P8FUr0Q1j-Hf1DvJA0iQ.ttf

117 ms

mtGm4-RGJqfMvt7P8FUr0Q1j-Hf1DrpG0iQ.ttf

mtGm4-RGJqfMvt7P8FUr0Q1j-Hf1DrpG0iQ.ttf

76 ms

5aUo9_-1phKLFgshYDvh6Vwt7V9VFE92jg.ttf

5aUo9_-1phKLFgshYDvh6Vwt7V9VFE92jg.ttf

80 ms

wso.jpg

wso.jpg

143 ms

benjtang.jpg

benjtang.jpg

115 ms

tanyang.jpg

tanyang.jpg

114 ms

Accessibility Review

vis.csail.mit.edu accessibility score

98

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.

Best Practices

vis.csail.mit.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

SEO Factors

vis.csail.mit.edu SEO score

92

Search Engine Optimization Advices

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 Vis.csail.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 Vis.csail.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

vis.csail.mit.edu

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