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name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value4.0 s

80/100

10%

TBT (Total Blocking Time)

Value210 ms

88/100

30%

CLS (Cumulative Layout Shift)

Value0.014

100/100

15%

TTI (Time to Interactive)

Value6.3 s

60/100

10%

bluerocketbooks.com

129 ms

bluerocketbooks.com

339 ms

js

64 ms

night.css

125 ms

main.css

183 ms

Our browser made a total of 58 requests to load all elements on the main page. We found that 83% of them (48 requests) were addressed to the original Bluerocketbooks.com, 3% (2 requests) were made to Dandb.com and 3% (2 requests) were made to Ecx.images-amazon.com. The less responsive or slowest element that took the longest time to load (423 ms) belongs to the original domain Bluerocketbooks.com.

Content Size

303.4 kB

After Optimization

145.8 kB

In fact, the total size of Bluerocketbooks.com main page is 303.4 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. 20% of websites need less resources to load. Javascripts take 151.0 kB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 26.5 kB

Original 34.2 kB
After minification 28.7 kB
After compression 7.7 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. This page needs HTML code to be minified as it can gain 5.5 kB, which is 16% 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 26.5 kB or 77% of the original size.

Image Optimization

-16%

Potential reduce by 17.8 kB

Original 112.4 kB
After minification 94.6 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, Blue Rocket Books needs image optimization as it can save up to 17.8 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-72%

Potential reduce by 109.0 kB

Original 151.0 kB
After minification 116.4 kB
After compression 42.0 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 109.0 kB or 72% of the original size.

CSS Optimization

-73%

Potential reduce by 4.2 kB

Original 5.8 kB
After minification 4.7 kB
After compression 1.6 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. Bluerocketbooks.com needs all CSS files to be minified and compressed as it can save up to 4.2 kB or 73% of the original size.

Requests Now

After Optimization

The browser has sent 56 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Blue Rocket Books. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.