Tools & Wizards About Us
www-video.eecs.berkeley.edu screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    68% of other websites

  • 77

    Accessibility

    Visual factors better than
    that of 45% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 50

    SEO

    Google-friendlier than
    18% of websites

www-video.eecs.berkeley.edu

VIP Lab

Page Load Speed

2.2 sec in total

First Response

487 ms

Resources Loaded

1.3 sec

Page Rendered

404 ms

www-video.eecs.berkeley.edu screenshot

About Website

Visit www-video.eecs.berkeley.edu now to see the best up-to-date Www Video Eecs Berkeley content for United States and also check out these interesting facts you probably never knew about www-video.eecs.berkeley.edu

Video and Image Processsing Lab

Visit www-video.eecs.berkeley.edu

Key Findings

We analyzed Www-video.eecs.berkeley.edu page load time and found that the first response time was 487 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

www-video.eecs.berkeley.edu performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.3 s

73/100

10%

LCP (Largest Contentful Paint)

Value2.5 s

90/100

25%

SI (Speed Index)

Value7.4 s

27/100

10%

TBT (Total Blocking Time)

Value2,560 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.078

95/100

15%

TTI (Time to Interactive)

Value15.9 s

6/100

10%

Network Requests Diagram

www-video.eecs.berkeley.edu

487 ms

getyear.js

69 ms

UCB.css

134 ms

UCB-flex.css

133 ms

brand

13 ms

Our browser made a total of 30 requests to load all elements on the main page. We found that 47% of them (14 requests) were addressed to the original Www-video.eecs.berkeley.edu, 23% (7 requests) were made to Youtube.com and 10% (3 requests) were made to Google.com. The less responsive or slowest element that took the longest time to load (529 ms) belongs to the original domain Www-video.eecs.berkeley.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 623.5 kB (42%)

Content Size

1.5 MB

After Optimization

869.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Www-video.eecs.berkeley.edu main page is 1.5 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 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 18.7 kB

  • Original 25.3 kB
  • After minification 23.1 kB
  • After compression 6.6 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 18.7 kB or 74% of the original size.

Image Optimization

-29%

Potential reduce by 320.2 kB

  • Original 1.1 MB
  • After minification 778.8 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. Obviously, Www Video Eecs Berkeley needs image optimization as it can save up to 320.2 kB or 29% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-63%

Potential reduce by 63.0 kB

  • Original 99.6 kB
  • After minification 98.9 kB
  • After compression 36.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 63.0 kB or 63% of the original size.

CSS Optimization

-82%

Potential reduce by 221.7 kB

  • Original 268.9 kB
  • After minification 265.2 kB
  • After compression 47.2 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. Www-video.eecs.berkeley.edu needs all CSS files to be minified and compressed as it can save up to 221.7 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (30%)

Requests Now

27

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 27 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Www Video Eecs Berkeley. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www-video.eecs.berkeley.edu

www-video.eecs.berkeley.edu

487 ms

getyear.js

getyear.js

69 ms

UCB.css

UCB.css

134 ms

UCB-flex.css

UCB-flex.css

133 ms

brand

brand

13 ms

brand

brand

35 ms

rvxmFaIN0Ug

rvxmFaIN0Ug

92 ms

bv53YqDryHo

bv53YqDryHo

153 ms

9tfEmMK1Mjg

9tfEmMK1Mjg

153 ms

mf4pKdesaJ0

mf4pKdesaJ0

152 ms

backpack300.jpg

backpack300.jpg

344 ms

googlelogo_lightgrey_46x16dp.png

googlelogo_lightgrey_46x16dp.png

40 ms

column-bg150.gif

column-bg150.gif

69 ms

banr1.jpg

banr1.jpg

150 ms

bearpaw.gif

bearpaw.gif

71 ms

vipLabTitle.png

vipLabTitle.png

150 ms

vip.gif

vip.gif

419 ms

voa_segment_photo.png

voa_segment_photo.png

420 ms

ktvu_segment_photo.png

ktvu_segment_photo.png

529 ms

energywire_photo_20140226.jpg

energywire_photo_20140226.jpg

419 ms

lbnl_newsletter_photo_20140226.jpg

lbnl_newsletter_photo_20140226.jpg

419 ms

www-player-vflMqr8uC.css

www-player-vflMqr8uC.css

4 ms

www-embed-player.js

www-embed-player.js

51 ms

base.js

base.js

67 ms

id

id

306 ms

T8Ys39_ecZUP0z5o0qwgiftCx6c5Z_CDv350QIo51NY.js

T8Ys39_ecZUP0z5o0qwgiftCx6c5Z_CDv350QIo51NY.js

117 ms

ad_status.js

ad_status.js

195 ms

backpack300.jpg

backpack300.jpg

324 ms

logo_ringo-vflOpz8ZI.png

logo_ringo-vflOpz8ZI.png

237 ms

UCB-print.css

UCB-print.css

133 ms

Accessibility Review

www-video.eecs.berkeley.edu accessibility score

77

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

High

<object> elements do not have alternate text

Best Practices

www-video.eecs.berkeley.edu best practices score

75

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

Serves images with low resolution

General

Impact

Issue

High

Page has valid source maps

SEO Factors

www-video.eecs.berkeley.edu SEO score

50

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

High

Image elements do not have [alt] attributes

High

Document uses plugins

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Www-video.eecs.berkeley.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 Www-video.eecs.berkeley.edu main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

www-video.eecs.berkeley.edu

Open Graph description is not detected on the main page of Www Video Eecs Berkeley. 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: