Report Summary

  • 0

    Performance

  • 45

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

51dnz.com

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Page Load Speed

18.6 sec in total

First Response

879 ms

Resources Loaded

16.2 sec

Page Rendered

1.4 sec

About Website

Visit 51dnz.com now to see the best up-to-date 51 Dnz content and also check out these interesting facts you probably never knew about 51dnz.com

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Visit 51dnz.com

Key Findings

We analyzed 51dnz.com page load time and found that the first response time was 879 ms and then it took 17.7 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.

Performance Metrics

51dnz.com performance score

0

Network Requests Diagram

51dnz.com

879 ms

bootstrap.min.css

267 ms

swiper.min.css

438 ms

css.css

483 ms

style.css

487 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 64% of them (42 requests) were addressed to the original 51dnz.com, 35% (23 requests) were made to Cbu01.alicdn.com and 2% (1 request) were made to China-gold.cn. The less responsive or slowest element that took the longest time to load (13.6 sec) belongs to the original domain 51dnz.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 133.8 kB (12%)

Content Size

1.2 MB

After Optimization

1.0 MB

In fact, the total size of 51dnz.com main page is 1.2 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. 45% of websites need less resources to load. Images take 929.5 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 28.1 kB

  • Original 33.9 kB
  • After minification 29.0 kB
  • After compression 5.8 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 4.9 kB, which is 14% 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 28.1 kB or 83% of the original size.

Image Optimization

-3%

Potential reduce by 31.1 kB

  • Original 929.5 kB
  • After minification 898.3 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. 51 Dnz images are well optimized though.

JavaScript Optimization

-44%

Potential reduce by 56.2 kB

  • Original 128.5 kB
  • After minification 128.5 kB
  • After compression 72.3 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 56.2 kB or 44% of the original size.

CSS Optimization

-30%

Potential reduce by 18.4 kB

  • Original 60.6 kB
  • After minification 55.1 kB
  • After compression 42.2 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. 51dnz.com needs all CSS files to be minified and compressed as it can save up to 18.4 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (28%)

Requests Now

65

After Optimization

47

The browser has sent 65 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 51 Dnz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

51dnz.com accessibility score

45

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

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

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

51dnz.com best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

51dnz.com SEO score

92

Search Engine Optimization Advices

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

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 51dnz.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 51dnz.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

Open Graph description is not detected on the main page of 51 Dnz. 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: