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cs.jhu.edu screenshot

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

cs.jhu.edu

Department of Computer Science - Department of Computer Science

Page Load Speed

1.7 sec in total

First Response

29 ms

Resources Loaded

992 ms

Page Rendered

650 ms

cs.jhu.edu screenshot

About Website

Welcome to cs.jhu.edu homepage info - get ready to check Cs Jhu best content for United States right away, or after learning these important things about cs.jhu.edu

Johns Hopkins Department of Computer Science offers BA, BS, MS, and PhD programs in computer science, and an MS program in security informatics. Areas of focus include core computer science topics and...

Visit cs.jhu.edu

Key Findings

We analyzed Cs.jhu.edu page load time and found that the first response time was 29 ms and then it took 1.6 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

cs.jhu.edu performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

68/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value510 ms

57/100

30%

CLS (Cumulative Layout Shift)

Value0.106

88/100

15%

TTI (Time to Interactive)

Value8.4 s

39/100

10%

Network Requests Diagram

cs.jhu.edu

29 ms

www.cs.jhu.edu

64 ms

style.min.css

21 ms

site.css

45 ms

jquery.min.js

42 ms

Our browser made a total of 41 requests to load all elements on the main page. We found that 66% of them (27 requests) were addressed to the original Cs.jhu.edu, 12% (5 requests) were made to Youtube.com and 5% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (290 ms) relates to the external source Siteimproveanalytics.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 131.4 kB (12%)

Content Size

1.1 MB

After Optimization

967.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cs.jhu.edu main page is 1.1 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. 60% of websites need less resources to load. Images take 574.1 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 113.6 kB

  • Original 131.9 kB
  • After minification 123.5 kB
  • After compression 18.3 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 113.6 kB or 86% of the original size.

Image Optimization

-1%

Potential reduce by 3.0 kB

  • Original 574.1 kB
  • After minification 571.2 kB

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. Cs Jhu images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 2.5 kB

  • Original 246.2 kB
  • After minification 246.2 kB
  • After compression 243.6 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

-8%

Potential reduce by 12.3 kB

  • Original 146.3 kB
  • After minification 146.3 kB
  • After compression 134.0 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. Cs.jhu.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 11 (38%)

Requests Now

29

After Optimization

18

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cs Jhu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

cs.jhu.edu

cs.jhu.edu

29 ms

www.cs.jhu.edu

www.cs.jhu.edu

64 ms

style.min.css

style.min.css

21 ms

site.css

site.css

45 ms

jquery.min.js

jquery.min.js

42 ms

jquery-migrate.min.js

jquery-migrate.min.js

34 ms

js

js

217 ms

site.js

site.js

183 ms

lazyload.min.js

lazyload.min.js

23 ms

fbevents.js

fbevents.js

247 ms

siteanalyze_16739.js

siteanalyze_16739.js

290 ms

placeholder.png

placeholder.png

84 ms

icons.svg

icons.svg

220 ms

departments-feature-pattern.png

departments-feature-pattern.png

183 ms

placeholder.png

placeholder.png

182 ms

homepage-undergrad-studies-.jpg

homepage-undergrad-studies-.jpg

182 ms

highlights-lines-2.svg

highlights-lines-2.svg

182 ms

JHU_WSE_02_28_2020_Vaccaro-7-300x300.jpeg

JHU_WSE_02_28_2020_Vaccaro-7-300x300.jpeg

226 ms

bigstock-Fingerprint-Scanning-Identific-282148945_1-300x300.jpeg

bigstock-Fingerprint-Scanning-Identific-282148945_1-300x300.jpeg

226 ms

CS-homepage-doctoral-studies-300x300.jpeg

CS-homepage-doctoral-studies-300x300.jpeg

227 ms

spiral.png

spiral.png

271 ms

circle.png

circle.png

239 ms

placeholder.png

placeholder.png

239 ms

_0UZf6gabQ8

_0UZf6gabQ8

245 ms

Gentona-Light.woff

Gentona-Light.woff

82 ms

Gentona-Medium.woff

Gentona-Medium.woff

53 ms

Gentona-Bold.woff

Gentona-Bold.woff

52 ms

Gentona-ExtraBold.woff

Gentona-ExtraBold.woff

83 ms

Quadon-Bold.woff

Quadon-Bold.woff

82 ms

Quadon-Medium.woff

Quadon-Medium.woff

82 ms

Quadon-Light.woff

Quadon-Light.woff

83 ms

image.aspx

image.aspx

40 ms

www-player.css

www-player.css

15 ms

www-embed-player.js

www-embed-player.js

50 ms

base.js

base.js

76 ms

ad_status.js

ad_status.js

148 ms

4FCBsbVWt5jZVKm36Bs_QtpgBkunTUSSklJnPgMburg.js

4FCBsbVWt5jZVKm36Bs_QtpgBkunTUSSklJnPgMburg.js

113 ms

embed.js

embed.js

41 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

36 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

43 ms

id

id

17 ms

Accessibility Review

cs.jhu.edu accessibility score

100

Accessibility Issues

Best Practices

cs.jhu.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

SEO Factors

cs.jhu.edu SEO score

91

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 Cs.jhu.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 Cs.jhu.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

cs.jhu.edu

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