Access statproofbook.github.io. The Book of Statistical Proofs | The Book of Statistical Proofs

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

96/100

25%

SI (Speed Index)

Value2.0 s

99/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.4 s

99/100

10%

statproofbook.github.io

14 ms

statproofbook.github.io

26 ms

main.css

11 ms

MathJax.js

105 ms

TeX-AMS_CHTML.js

184 ms

Our browser made a total of 26 requests to load all elements on the main page. We found that 27% of them (7 requests) were addressed to the original Statproofbook.github.io, 65% (17 requests) were made to Cdn.jsdelivr.net and 4% (1 request) were made to Zenodo.org. The less responsive or slowest element that took the longest time to load (449 ms) relates to the external source Cdn.jsdelivr.net.

Content Size

28.5 kB

After Optimization

15.0 kB

In fact, the total size of Statproofbook.github.io main page is 28.5 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. Only 10% of websites need less resources to load. HTML takes 14.6 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 10.6 kB

Original 14.6 kB
After minification 13.9 kB
After compression 4.0 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 10.6 kB or 73% of the original size.

Image Optimization

-21%

Potential reduce by 2.9 kB

Original 14.0 kB
After minification 11.1 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, Statproof Book Github needs image optimization as it can save up to 2.9 kB or 21% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

Requests Now

After Optimization

The browser has sent 24 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Statproof Book Github. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Browser errors were logged to the console

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Image elements do not have [alt] attributes

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/).

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 Statproofbook.github.io 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 Statproofbook.github.io 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 data is detected on the main page of PARSED_DOMAIN, but there is no image specified in description. It would be a good idea for the website admin to select a nice image that can properly represent the website in Open Graph data, otherwise the first found image will be taken for this purpose and social media information block will look like this: