Tools & Wizards About Us
theeffectbook.net screenshot

Report Summary

  • 41

    Performance

    Renders faster than
    60% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

theeffectbook.net

The Effect: An Introduction to Research Design and Causality | The Effect

Page Load Speed

822 ms in total

First Response

125 ms

Resources Loaded

537 ms

Page Rendered

160 ms

theeffectbook.net screenshot

About Website

Visit theeffectbook.net now to see the best up-to-date The Effect Book content and also check out these interesting facts you probably never knew about theeffectbook.net

The Effect: An Introduction to Research Design and Causality | The Effect is a textbook that covers the basics and concepts of research design, especially as applied to causal inference from observati...

Visit theeffectbook.net

Key Findings

We analyzed Theeffectbook.net page load time and found that the first response time was 125 ms and then it took 697 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

theeffectbook.net performance score

41

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value5.3 s

58/100

10%

TBT (Total Blocking Time)

Value470 ms

61/100

30%

CLS (Cumulative Layout Shift)

Value0.27

45/100

15%

TTI (Time to Interactive)

Value5.8 s

67/100

10%

Network Requests Diagram

theeffectbook.net

125 ms

www.theeffectbook.net

246 ms

tex-chtml-full.js

31 ms

tufte.css

3 ms

envisioned.css

4 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 68% of them (13 requests) were addressed to the original Theeffectbook.net, 11% (2 requests) were made to Fonts.googleapis.com and 5% (1 request) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (246 ms) belongs to the original domain Theeffectbook.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 36.5 kB (20%)

Content Size

181.6 kB

After Optimization

145.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Theeffectbook.net main page is 181.6 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. Images take 113.3 kB which makes up the majority of the site volume.

HTML Optimization

-67%

Potential reduce by 12.1 kB

  • Original 18.0 kB
  • After minification 18.0 kB
  • After compression 5.9 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 12.1 kB or 67% of the original size.

Image Optimization

-20%

Potential reduce by 22.9 kB

  • Original 113.3 kB
  • After minification 90.5 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, The Effect Book needs image optimization as it can save up to 22.9 kB or 20% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-0%

Potential reduce by 159 B

  • Original 43.5 kB
  • After minification 43.5 kB
  • After compression 43.4 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. This website has mostly compressed JavaScripts.

CSS Optimization

-20%

Potential reduce by 1.4 kB

  • Original 6.7 kB
  • After minification 6.7 kB
  • After compression 5.4 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. Theeffectbook.net needs all CSS files to be minified and compressed as it can save up to 1.4 kB or 20% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (81%)

Requests Now

16

After Optimization

3

  • Images
  • JavaScript
  • CSS

The browser has sent 16 CSS, Javascripts, AJAX and image requests in order to completely render the main page of The Effect Book. 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 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

theeffectbook.net

theeffectbook.net

125 ms

www.theeffectbook.net

www.theeffectbook.net

246 ms

tex-chtml-full.js

tex-chtml-full.js

31 ms

tufte.css

tufte.css

3 ms

envisioned.css

envisioned.css

4 ms

msmb.css

msmb.css

10 ms

panelset.css

panelset.css

9 ms

panelset.js

panelset.js

10 ms

kePrint.js

kePrint.js

8 ms

lightable.css

lightable.css

9 ms

jquery.min.js

jquery.min.js

55 ms

css.css

css.css

10 ms

myquery.js

myquery.js

10 ms

jquery.mark.min.js

jquery.mark.min.js

10 ms

css

css

29 ms

css

css

40 ms

all.min.css

all.min.css

37 ms

cover.png

cover.png

32 ms

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

6xK3dSBYKcSV-LCoeQqfX1RYOo3qOK7g.ttf

17 ms

Accessibility Review

theeffectbook.net accessibility score

91

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.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

Best Practices

theeffectbook.net best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

theeffectbook.net SEO score

83

Search Engine Optimization Advices

Content Best Practices

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

Impact

Issue

High

Links do not have descriptive text

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Theeffectbook.net can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Theeffectbook.net 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

theeffectbook.net

Open Graph data is detected on the main page of The Effect Book. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: