Access cohenlab.stanford.edu. Cohen Lab Mission | Cohen LabCohen Lab

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

35/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

58/100

25%

SI (Speed Index)

Value16.8 s

0/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.045

99/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

cohenlab.stanford.edu

1339 ms

bootstrap.min.css

457 ms

font-awesome.min.css

27 ms

base.min.css

211 ms

style.css

138 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 55% of them (12 requests) were addressed to the original Cohenlab.stanford.edu, 23% (5 requests) were made to Fonts.gstatic.com and 9% (2 requests) were made to Maxcdn.bootstrapcdn.com. The less responsive or slowest element that took the longest time to load (1.3 sec) belongs to the original domain Cohenlab.stanford.edu.

Content Size

1.1 MB

After Optimization

809.5 kB

In fact, the total size of Cohenlab.stanford.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. 30% of websites need less resources to load. Images take 774.2 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 13.3 kB

Original 17.8 kB
After minification 15.7 kB
After compression 4.4 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 2.1 kB, which is 12% 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 13.3 kB or 75% of the original size.

Image Optimization

-7%

Potential reduce by 54.3 kB

Original 774.2 kB
After minification 720.0 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. Cohen Lab Stanford images are well optimized though.

JavaScript Optimization

-46%

Potential reduce by 41.8 kB

Original 91.2 kB
After minification 90.0 kB
After compression 49.3 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 41.8 kB or 46% of the original size.

CSS Optimization

-84%

Potential reduce by 189.2 kB

Original 225.0 kB
After minification 222.1 kB
After compression 35.8 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. Cohenlab.stanford.edu needs all CSS files to be minified and compressed as it can save up to 189.2 kB or 84% of the original size.

Requests Now

After Optimization

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cohen Lab Stanford. 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 6 to 1 for CSS and as a result speed up the page load time.