Report Summary

  • 39

    Performance

    Renders faster than
    59% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 36% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

d17.cc

第一枪 - B2B电子商务平台,优质的企业b2b商业信息网

Page Load Speed

33.5 sec in total

First Response

3.3 sec

Resources Loaded

29.6 sec

Page Rendered

621 ms

d17.cc screenshot

About Website

Welcome to d17.cc homepage info - get ready to check D 17 best content for China right away, or after learning these important things about d17.cc

第一枪(dyq.cn)是全国百强B2B电子商务平台,汇集海量的产品与企业服务数据,整合各垂直行业的产业链资源,提供企业网络推广、商机发布、贸易撮合等b2b服务。

Visit d17.cc

Key Findings

We analyzed D17.cc page load time and found that the first response time was 3.3 sec and then it took 30.2 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 34 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

d17.cc performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value13.3 s

0/100

25%

SI (Speed Index)

Value16.7 s

0/100

10%

TBT (Total Blocking Time)

Value80 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.231

54/100

15%

TTI (Time to Interactive)

Value13.0 s

12/100

10%

Network Requests Diagram

d17.cc

3332 ms

public.css

1308 ms

index.css

3878 ms

jquery-ui.min.css

6456 ms

jquery-1.8.3.min.js

14060 ms

Our browser made a total of 98 requests to load all elements on the main page. We found that 10% of them (10 requests) were addressed to the original D17.cc, 27% (26 requests) were made to Img1.d17.cc and 20% (20 requests) were made to Img3.d17.cc. The less responsive or slowest element that took the longest time to load (20.2 sec) relates to the external source Images.d17.cc.

Page Optimization Overview & Recommendations

Page size can be reduced by 425.8 kB (13%)

Content Size

3.2 MB

After Optimization

2.8 MB

In fact, the total size of D17.cc main page is 3.2 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. 30% of websites need less resources to load. Images take 2.9 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 185.9 kB

  • Original 218.8 kB
  • After minification 198.0 kB
  • After compression 32.9 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 185.9 kB or 85% of the original size.

Image Optimization

-7%

Potential reduce by 191.9 kB

  • Original 2.9 MB
  • After minification 2.7 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. D 17 images are well optimized though.

JavaScript Optimization

-24%

Potential reduce by 8.0 kB

  • Original 33.8 kB
  • After minification 33.8 kB
  • After compression 25.8 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 8.0 kB or 24% of the original size.

CSS Optimization

-80%

Potential reduce by 40.0 kB

  • Original 49.7 kB
  • After minification 46.1 kB
  • After compression 9.7 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. D17.cc needs all CSS files to be minified and compressed as it can save up to 40.0 kB or 80% of the original size.

Requests Breakdown

Number of requests can be reduced by 12 (20%)

Requests Now

61

After Optimization

49

The browser has sent 61 CSS, Javascripts, AJAX and image requests in order to completely render the main page of D 17. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

d17.cc 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.

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

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

d17.cc 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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

d17.cc SEO score

77

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

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 doesn't use 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 D17.cc 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 D17.cc 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 D 17. 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: