Access 3d-book.com.

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

87/100

10%

LCP (Largest Contentful Paint)

Value1.9 s

98/100

25%

SI (Speed Index)

Value2.1 s

99/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.9 s

99/100

10%

3d-book.com

598 ms

Our browser made a total of 1 request to load all elements on the main page. We found that all of those requests were addressed to 3d-book.com and no external sources were called. The less responsive or slowest element that took the longest time to load (598 ms) belongs to the original domain 3d-book.com.

Content Size

878.6 kB

After Optimization

677.0 kB

In fact, the total size of 3d-book.com main page is 878.6 kB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. Images take 590.6 kB which makes up the majority of the site volume.

HTML Optimization

-55%

Potential reduce by 332 B

Original 606 B
After minification 473 B
After compression 274 B

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 133 B, which is 22% 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 332 B or 55% of the original size.

Image Optimization

-1%

Potential reduce by 8.3 kB

Original 590.6 kB
After minification 582.3 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. 3 D Book images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 127.7 kB

Original 205.9 kB
After minification 201.6 kB
After compression 78.2 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 127.7 kB or 62% of the original size.

CSS Optimization

-80%

Potential reduce by 65.3 kB

Original 81.4 kB
After minification 75.0 kB
After compression 16.2 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. 3d-book.com needs all CSS files to be minified and compressed as it can save up to 65.3 kB or 80% of the original size.

Requests Now

After Optimization

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Accessibility Issues

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

Document doesn't have a <title> element

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

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Issues were logged in the Issues panel in Chrome Devtools

Search Engine Optimization Advices

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

High

Document doesn't have a <title> element

Language and Encoding

Language Detected

N/A
Language Claimed

EN
Encoding

UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 3d-book.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that 3d-book.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

3d-book.com

Open Graph description is not detected on the main page of 3 D 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: