Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

laser.cs.umass.edu

LASER – Laboratory for Advanced Software Engineering Research at UMass Amherst

Page Load Speed

3.7 sec in total

First Response

1.2 sec

Resources Loaded

1.8 sec

Page Rendered

674 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 1.2 sec and then it took 2.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

laser.cs.umass.edu performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.4 s

0/100

25%

SI (Speed Index)

Value11.1 s

6/100

10%

TBT (Total Blocking Time)

Value860 ms

33/100

30%

CLS (Cumulative Layout Shift)

Value0.098

90/100

15%

TTI (Time to Interactive)

Value23.5 s

1/100

10%

Network Requests Diagram

laser.cs.umass.edu

1245 ms

style.min.css

187 ms

bootstrap.css

200 ms

css

23 ms

css

38 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Laser.cs.umass.edu, 67% (34 requests) were made to Groups.cs.umass.edu and 24% (12 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Laser.cs.umass.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 944.7 kB (13%)

Content Size

7.2 MB

After Optimization

6.3 MB

In fact, the total size of Laser.cs.umass.edu main page is 7.2 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 6.1 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 33.3 kB

  • Original 44.0 kB
  • After minification 42.6 kB
  • After compression 10.7 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 33.3 kB or 76% of the original size.

Image Optimization

-0%

Potential reduce by 12.0 kB

  • Original 6.1 MB
  • After minification 6.1 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. LASER Cs UMass images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 245.2 kB

  • Original 341.3 kB
  • After minification 318.0 kB
  • After compression 96.1 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 245.2 kB or 72% of the original size.

CSS Optimization

-85%

Potential reduce by 654.2 kB

  • Original 767.0 kB
  • After minification 726.8 kB
  • After compression 112.7 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. Laser.cs.umass.edu needs all CSS files to be minified and compressed as it can save up to 654.2 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 29 (78%)

Requests Now

37

After Optimization

8

The browser has sent 37 CSS, Javascripts, AJAX and image requests in order to completely render the main page of LASER Cs UMass. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and from 20 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

laser.cs.umass.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

laser.cs.umass.edu best practices score

83

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

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

laser.cs.umass.edu SEO score

91

Search Engine Optimization Advices

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 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 it matches the claimed language. Our system also found out that Laser.cs.umass.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

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: