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laser.cs.umass.edu screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    81% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 54

    SEO

    Google-friendlier than
    19% of websites

laser.cs.umass.edu

LASER – Professor at the College of Information and Computer Sciences

Page Load Speed

994 ms in total

First Response

169 ms

Resources Loaded

512 ms

Page Rendered

313 ms

laser.cs.umass.edu screenshot

About Website

Click here to check amazing LASER Cs Umass content for United States. Otherwise, check out these important facts you probably never knew about laser.cs.umass.edu

Visit laser.cs.umass.edu

Key Findings

We analyzed Laser.cs.umass.edu page load time and found that the first response time was 169 ms and then it took 825 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

laser.cs.umass.edu performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

89/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value2.3 s

99/100

10%

TBT (Total Blocking Time)

Value1,970 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

laser.cs.umass.edu

169 ms

styles.css

65 ms

informal_fff_on_000.gif

140 ms

laser.jpg

61 ms

mail.gif

118 ms

Our browser made a total of 12 requests to load all elements on the main page. We found that 50% of them (6 requests) were addressed to the original Laser.cs.umass.edu, 25% (3 requests) were made to Umass.edu and 17% (2 requests) were made to Static.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (290 ms) relates to the external source Facebook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 31.5 kB (74%)

Content Size

42.8 kB

After Optimization

11.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Laser.cs.umass.edu main page is 42.8 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. HTML takes 35.8 kB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 31.0 kB

  • Original 35.8 kB
  • After minification 29.4 kB
  • After compression 4.8 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 6.4 kB, which is 18% 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 31.0 kB or 87% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 6.3 kB
  • After minification 6.3 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. LASER Cs Umass images are well optimized though.

CSS Optimization

-60%

Potential reduce by 445 B

  • Original 739 B
  • After minification 594 B
  • After compression 294 B

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. Laser.cs.umass.edu needs all CSS files to be minified and compressed as it can save up to 445 B or 60% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

9

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 9 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LASER Cs Umass. According to our analytics all requests are already optimized.

Network Requests Diagram

laser.cs.umass.edu

laser.cs.umass.edu

169 ms

styles.css

styles.css

65 ms

informal_fff_on_000.gif

informal_fff_on_000.gif

140 ms

laser.jpg

laser.jpg

61 ms

mail.gif

mail.gif

118 ms

home.gif

home.gif

123 ms

like.php

like.php

290 ms

seal.gif

seal.gif

107 ms

informal_fff_on_000.gif

informal_fff_on_000.gif

183 ms

blxue7LW05k.js

blxue7LW05k.js

90 ms

FEppCFCt76d.png

FEppCFCt76d.png

59 ms

black-wordmark.gif

black-wordmark.gif

50 ms

Accessibility Review

laser.cs.umass.edu accessibility score

78

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

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

Best Practices

laser.cs.umass.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

SEO Factors

laser.cs.umass.edu SEO score

54

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Laser.cs.umass.edu 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 Laser.cs.umass.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

laser.cs.umass.edu

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