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ds3999.com screenshot

0

Performance
71

Accessibility

Visual factors better than
that of 37% of websites
83

Best Practices

More advanced features
available than in
56% of websites
81

SEO

Google-friendlier than
43% of websites

First Response

687 ms

Resources Loaded

29.3 sec

Page Rendered

1.3 sec

ds3999.com screenshot

About Website

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Key Findings

We analyzed Ds3999.com page load time and found that the first response time was 687 ms and then it took 30.6 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 5 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

name

value

score

weighting

FCP (First Contentful Paint)

Value0

0/100

10%

LCP (Largest Contentful Paint)

Value0

0/100

25%

SI (Speed Index)

Value0

0/100

10%

TBT (Total Blocking Time)

Value0

0/100

30%

CLS (Cumulative Layout Shift)

Value0.349

32/100

15%

TTI (Time to Interactive)

Value0

0/100

10%

ds3999.com

687 ms

www.ds3999.com

1503 ms

basic.css

146 ms

style.css

233 ms

settings.css

240 ms

Our browser made a total of 158 requests to load all elements on the main page. We found that 64% of them (101 requests) were addressed to the original Ds3999.com, 6% (9 requests) were made to Api0.map.bdimg.com and 4% (7 requests) were made to Api2.map.bdimg.com. The less responsive or slowest element that took the longest time to load (20.2 sec) relates to the external source Api2.map.bdimg.com.

Content Size

4.6 MB

After Optimization

3.8 MB

In fact, the total size of Ds3999.com main page is 4.6 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. 50% of websites need less resources to load. Images take 4.1 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 28.2 kB

Original 35.7 kB
After minification 31.2 kB
After compression 7.5 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 4.5 kB, which is 13% 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 28.2 kB or 79% of the original size.

Image Optimization

-10%

Potential reduce by 388.2 kB

Original 4.1 MB
After minification 3.7 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. Ds 3999 images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 228.2 kB

Original 319.4 kB
After minification 296.2 kB
After compression 91.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 228.2 kB or 71% of the original size.

CSS Optimization

-85%

Potential reduce by 128.8 kB

Original 152.3 kB
After minification 113.6 kB
After compression 23.5 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. Ds3999.com needs all CSS files to be minified and compressed as it can save up to 128.8 kB or 85% of the original size.

Requests Now

149

After Optimization

104

The browser has sent 149 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ds 3999. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 23 to 1 for JavaScripts and from 11 to 1 for CSS 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 interpretation of your content by users in different locales.

High

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

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

robots.txt is not valid

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

ZH
Language Claimed

N/A
Encoding

GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ds3999.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Ds3999.com main page’s claimed encoding is gb2312. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

ds3999.com

Open Graph description is not detected on the main page of Ds 3999. 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: