Tools & Wizards About Us

Report Summary

  • 47

    Performance

    Renders faster than
    66% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    22% of websites

cnal.com

世铝网-铝业信息、铝材交易平台

Page Load Speed

10 sec in total

First Response

612 ms

Resources Loaded

8.9 sec

Page Rendered

415 ms

About Website

Click here to check amazing Cnal content for China. Otherwise, check out these important facts you probably never knew about cnal.com

世铝网是铝业信息及铝材交易平台,尽心尽力为铝行业服务,受到南山铝业、云铝股份、亚洲铝业、明泰铝业、中孚实业、万达铝业、鑫泰铝业、中国宏桥、中国忠旺、丛林集团、万基控股、山东裕航、新疆众和等铝行业同仁大力支持。

Visit cnal.com

Key Findings

We analyzed Cnal.com page load time and found that the first response time was 612 ms and then it took 9.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

cnal.com performance score

47

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.9 s

1/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value13.3 s

2/100

10%

TBT (Total Blocking Time)

Value100 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.037

100/100

15%

TTI (Time to Interactive)

Value11.6 s

18/100

10%

Network Requests Diagram

cnal.com

612 ms

www.cnal.com

788 ms

www.cnal.com

1224 ms

jquery-ui.css

1187 ms

common.css

1196 ms

Our browser made a total of 126 requests to load all elements on the main page. We found that 9% of them (11 requests) were addressed to the original Cnal.com, 45% (57 requests) were made to Dreambox.cnal.com and 24% (30 requests) were made to Skin.cnal.com. The less responsive or slowest element that took the longest time to load (3.8 sec) relates to the external source Dreambox.cnal.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 420.7 kB (24%)

Content Size

1.8 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Cnal.com main page is 1.8 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 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 191.6 kB

  • Original 225.8 kB
  • After minification 182.8 kB
  • After compression 34.2 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 43.1 kB, which is 19% 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 191.6 kB or 85% of the original size.

Image Optimization

-6%

Potential reduce by 71.2 kB

  • Original 1.3 MB
  • After minification 1.2 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. Cnal images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 151.9 kB

  • Original 244.5 kB
  • After minification 244.5 kB
  • After compression 92.6 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 151.9 kB or 62% of the original size.

CSS Optimization

-22%

Potential reduce by 5.9 kB

  • Original 26.7 kB
  • After minification 26.7 kB
  • After compression 20.8 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. Cnal.com needs all CSS files to be minified and compressed as it can save up to 5.9 kB or 22% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (20%)

Requests Now

123

After Optimization

99

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 123 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cnal. 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 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

cnal.com accessibility score

70

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

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

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

cnal.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

cnal.com SEO score

62

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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 Cnal.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 Cnal.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 Cnal. 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: