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goinactionbook.com screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

goinactionbook.com

Go In Action | A book on the Go Programming Language

Page Load Speed

2.4 sec in total

First Response

129 ms

Resources Loaded

1.9 sec

Page Rendered

370 ms

goinactionbook.com screenshot

About Website

Visit goinactionbook.com now to see the best up-to-date Go In Action Book content and also check out these interesting facts you probably never knew about goinactionbook.com

A book on Google's Go programming language. Learn golang from authors who have high volume production deployments of Go. From Manning Publications.

Visit goinactionbook.com

Key Findings

We analyzed Goinactionbook.com page load time and found that the first response time was 129 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

goinactionbook.com performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value13.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value15.1 s

0/100

25%

SI (Speed Index)

Value50.9 s

0/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value1.833

0/100

15%

TTI (Time to Interactive)

Value15.6 s

6/100

10%

Network Requests Diagram

goinactionbook.com

129 ms

goinactionbook.com

192 ms

www.goinactionbook.com

41 ms

www.goinactionbook.com

223 ms

reset.css

176 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 97% of them (33 requests) were addressed to the original Goinactionbook.com, 3% (1 request) were made to Static.getclicky.com. The less responsive or slowest element that took the longest time to load (799 ms) belongs to the original domain Goinactionbook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 116.6 kB (16%)

Content Size

749.8 kB

After Optimization

633.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Goinactionbook.com main page is 749.8 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. 15% of websites need less resources to load. Images take 588.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 35.4 kB

  • Original 44.0 kB
  • After minification 33.5 kB
  • After compression 8.6 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. This page needs HTML code to be minified as it can gain 10.5 kB, which is 24% 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 35.4 kB or 81% of the original size.

Image Optimization

-13%

Potential reduce by 74.8 kB

  • Original 588.2 kB
  • After minification 513.4 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, Go In Action Book needs image optimization as it can save up to 74.8 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-2%

Potential reduce by 2.0 kB

  • Original 100.3 kB
  • After minification 100.3 kB
  • After compression 98.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-25%

Potential reduce by 4.4 kB

  • Original 17.3 kB
  • After minification 15.3 kB
  • After compression 13.0 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. Goinactionbook.com needs all CSS files to be minified and compressed as it can save up to 4.4 kB or 25% of the original size.

Requests Breakdown

Number of requests can be reduced by 16 (55%)

Requests Now

29

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 29 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Go In Action 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 11 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

goinactionbook.com

goinactionbook.com

129 ms

goinactionbook.com

goinactionbook.com

192 ms

www.goinactionbook.com

www.goinactionbook.com

41 ms

www.goinactionbook.com

www.goinactionbook.com

223 ms

reset.css

reset.css

176 ms

skeleton.css

skeleton.css

219 ms

font-awesome.min.css

font-awesome.min.css

217 ms

animate.css

animate.css

230 ms

video-js.min.css

video-js.min.css

233 ms

layout.css

layout.css

219 ms

101342518.js

101342518.js

150 ms

jquery.min.js

jquery.min.js

454 ms

jquery.1.10.2.js

jquery.1.10.2.js

496 ms

jquery.cycle2.js

jquery.cycle2.js

397 ms

jquery.countTo.js

jquery.countTo.js

410 ms

jquery.slimscroll.min.js

jquery.slimscroll.min.js

416 ms

video.js

video.js

520 ms

vjs.youtube.js

vjs.youtube.js

576 ms

jquery.placeholder.js

jquery.placeholder.js

610 ms

waypoints.min.js

waypoints.min.js

595 ms

custom.js

custom.js

633 ms

Ketelsen-GOinA.jpg

Ketelsen-GOinA.jpg

690 ms

client_01.png

client_01.png

705 ms

client_02.png

client_02.png

766 ms

client_03.png

client_03.png

784 ms

author.png

author.png

799 ms

turquise.css

turquise.css

595 ms

slider_bg.jpg

slider_bg.jpg

180 ms

prev.png

prev.png

195 ms

next.png

next.png

181 ms

quote_bg.png

quote_bg.png

242 ms

overlay_bg.png

overlay_bg.png

197 ms

tablet_mockup.png

tablet_mockup.png

199 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

375 ms

Accessibility Review

goinactionbook.com accessibility score

68

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Names and labels

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.

Impact

Issue

High

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

goinactionbook.com 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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

goinactionbook.com SEO score

92

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

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Goinactionbook.com 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 Goinactionbook.com 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

goinactionbook.com

Open Graph description is not detected on the main page of Go In Action Book. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: