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cs.sfu.ca screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 66

    SEO

    Google-friendlier than
    25% of websites

cs.sfu.ca

Computing Science - Simon Fraser University

Page Load Speed

6.1 sec in total

First Response

281 ms

Resources Loaded

5.4 sec

Page Rendered

385 ms

cs.sfu.ca screenshot

About Website

Visit cs.sfu.ca now to see the best up-to-date Cs Sfu content for Canada and also check out these interesting facts you probably never knew about cs.sfu.ca

"SFU Data Crunchers" Win Best Student Team Award

Visit cs.sfu.ca

Key Findings

We analyzed Cs.sfu.ca page load time and found that the first response time was 281 ms and then it took 5.8 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

cs.sfu.ca performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value36.5 s

0/100

25%

SI (Speed Index)

Value7.5 s

27/100

10%

TBT (Total Blocking Time)

Value150 ms

94/100

30%

CLS (Cumulative Layout Shift)

Value0.172

69/100

15%

TTI (Time to Interactive)

Value10.8 s

22/100

10%

Network Requests Diagram

cs.sfu.ca

281 ms

www.cs.sfu.ca

345 ms

computing.html

1333 ms

head.styles.min.css

272 ms

jquery-ui.css

72 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original Cs.sfu.ca, 80% (59 requests) were made to Sfu.ca and 3% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.3 sec) relates to the external source Sfu.ca.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.2 MB (17%)

Content Size

7.0 MB

After Optimization

5.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cs.sfu.ca main page is 7.0 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. 55% of websites need less resources to load. Images take 6.4 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 35.5 kB

  • Original 41.8 kB
  • After minification 31.1 kB
  • After compression 6.3 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. This page needs HTML code to be minified as it can gain 10.7 kB, which is 26% 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 35.5 kB or 85% of the original size.

Image Optimization

-12%

Potential reduce by 770.4 kB

  • Original 6.4 MB
  • After minification 5.6 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, Cs Sfu needs image optimization as it can save up to 770.4 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 137.0 kB

  • Original 223.8 kB
  • After minification 219.3 kB
  • After compression 86.8 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 137.0 kB or 61% of the original size.

CSS Optimization

-84%

Potential reduce by 270.2 kB

  • Original 321.3 kB
  • After minification 293.4 kB
  • After compression 51.1 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.sfu.ca needs all CSS files to be minified and compressed as it can save up to 270.2 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (45%)

Requests Now

65

After Optimization

36

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cs Sfu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cs.sfu.ca

cs.sfu.ca

281 ms

www.cs.sfu.ca

www.cs.sfu.ca

345 ms

computing.html

computing.html

1333 ms

head.styles.min.css

head.styles.min.css

272 ms

jquery-ui.css

jquery-ui.css

72 ms

is-cs.css

is-cs.css

214 ms

is-cs-980.css

is-cs-980.css

184 ms

is-cs-768.css

is-cs-768.css

145 ms

is-cs-480.css

is-cs-480.css

155 ms

final.css

final.css

148 ms

jquery.min.js

jquery.min.js

399 ms

utils.min.js

utils.min.js

221 ms

granite.min.js

granite.min.js

232 ms

jquery.min.js

jquery.min.js

273 ms

jquery-ui.min.js

jquery-ui.min.js

425 ms

jquery-ui.min.js

jquery-ui.min.js

292 ms

head.scripts.min.js

head.scripts.min.js

378 ms

footer.scripts.min.js

footer.scripts.min.js

1558 ms

toggleFormContent.min.js

toggleFormContent.min.js

295 ms

random-load.js

random-load.js

302 ms

is-js.js

is-js.js

412 ms

jquery.flexverticalcenter.js

jquery.flexverticalcenter.js

409 ms

iefix.js

iefix.js

1266 ms

js

js

91 ms

ga.js

ga.js

45 ms

textured-red-01-small.png

textured-red-01-small.png

88 ms

sfu-logo@2x.png

sfu-logo@2x.png

75 ms

bg-small.png

bg-small.png

141 ms

bg-textured.png

bg-textured.png

73 ms

facebook_32.png

facebook_32.png

149 ms

twitter_32.png

twitter_32.png

149 ms

flickr.png

flickr.png

168 ms

youtube-icon_32x32.png

youtube-icon_32x32.png

232 ms

1454737090960.jpg

1454737090960.jpg

2264 ms

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1454112386922.png

957 ms

1443480295416.jpg

1443480295416.jpg

587 ms

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1453771608860.jpg

580 ms

1418670438611.jpg

1418670438611.jpg

954 ms

1418670555856.png

1418670555856.png

1230 ms

prospective-arrow.png

prospective-arrow.png

931 ms

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1094 ms

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1417467758202.png

1081 ms

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1227 ms

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1227 ms

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1227 ms

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1288 ms

1415672124554.png

1415672124554.png

1290 ms

FWH3ZcTUh3E

FWH3ZcTUh3E

101 ms

st1BD-moArk

st1BD-moArk

155 ms

bg-prospective-btn-2.png

bg-prospective-btn-2.png

1293 ms

bg-current-btn-2.png

bg-current-btn-2.png

1400 ms

bg-faculty-btn-2.png

bg-faculty-btn-2.png

1357 ms

DINWeb-Medium.woff

DINWeb-Medium.woff

1343 ms

DINWeb-Bold.woff

DINWeb-Bold.woff

1356 ms

DINWeb.woff

DINWeb.woff

1367 ms

dinpro-medium-webfont.woff

dinpro-medium-webfont.woff

1399 ms

dinpro-regular-webfont.woff

dinpro-regular-webfont.woff

1411 ms

__utm.gif

__utm.gif

28 ms

collect

collect

55 ms

www-embed-player-vfl8xM8me.css

www-embed-player-vfl8xM8me.css

94 ms

www-embed-player.js

www-embed-player.js

116 ms

Lrq7Jibxdtv2QOPyDSqncpDfQFNs3PE6SoUrUNh2GTU.js

Lrq7Jibxdtv2QOPyDSqncpDfQFNs3PE6SoUrUNh2GTU.js

61 ms

ad_status.js

ad_status.js

41 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

30 ms

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

35 ms

1418670555856.rendition-large.png

1418670555856.rendition-large.png

720 ms

1454112386922.rendition-large.png

1454112386922.rendition-large.png

771 ms

1443480295416.rendition-large.jpg

1443480295416.rendition-large.jpg

351 ms

1453771608860.rendition-large.jpg

1453771608860.rendition-large.jpg

424 ms

1418670438611.rendition-large.jpg

1418670438611.rendition-large.jpg

483 ms

1418763247835.rendition-medium.png

1418763247835.rendition-medium.png

196 ms

1417467758202.rendition-medium.png

1417467758202.rendition-medium.png

322 ms

1418763312736.rendition-medium.png

1418763312736.rendition-medium.png

549 ms

1418847431412.rendition-medium.png

1418847431412.rendition-medium.png

481 ms

Accessibility Review

cs.sfu.ca accessibility score

75

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

cs.sfu.ca best practices score

67

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

cs.sfu.ca SEO score

66

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 doesn't use legible font sizes

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Cs.sfu.ca can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Cs.sfu.ca 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.sfu.ca

Open Graph description is not detected on the main page of Cs Sfu. 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: