Access issuu.us. Issuu | Create Interactive Flipbooks on our Digital Publishing Platform

name

value

score

weighting

FCP (First Contentful Paint)

Value2.9 s

52/100

10%

LCP (Largest Contentful Paint)

Value6.3 s

10/100

25%

SI (Speed Index)

Value11.3 s

5/100

10%

TBT (Total Blocking Time)

Value750 ms

40/100

30%

CLS (Cumulative Layout Shift)

Value0.19

64/100

15%

TTI (Time to Interactive)

Value20.1 s

2/100

10%

issuu.us

10 ms

issuu.com

111 ms

index.min.css

21 ms

client.css

27 ms

react.production.min.js

40 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Issuu.us, 81% (55 requests) were made to Static.isu.pub and 6% (4 requests) were made to Issuu.com. The less responsive or slowest element that took the longest time to load (170 ms) relates to the external source Googletagmanager.com.

Content Size

3.1 MB

After Optimization

2.2 MB

In fact, the total size of Issuu.us main page is 3.1 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. Only a small number of websites need less resources to load. Images take 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 101.6 kB

Original 130.3 kB
After minification 128.8 kB
After compression 28.6 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 101.6 kB or 78% of the original size.

Image Optimization

-0%

Potential reduce by 65 B

Original 1.6 MB
After minification 1.6 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. Issuu images are well optimized though.

JavaScript Optimization

-57%

Potential reduce by 711.8 kB

Original 1.3 MB
After minification 1.3 MB
After compression 546.9 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 711.8 kB or 57% of the original size.

CSS Optimization

-0%

Potential reduce by 343 B

Original 95.6 kB
After minification 95.6 kB
After compression 95.2 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. Issuu.us has all CSS files already compressed.

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After Optimization

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Issuu. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.