Tools & Wizards About Us
a571.com screenshot

Report Summary

  • 50

    Performance

    Renders faster than
    68% of other websites

  • 60

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 58

    SEO

    Google-friendlier than
    20% of websites

a571.com

杭州广告网-杭州广告发布杭州广告公司杭州户外广告杭州广告设计制作浙江广告公司-五星网

Page Load Speed

30.1 sec in total

First Response

6.4 sec

Resources Loaded

23.4 sec

Page Rendered

261 ms

a571.com screenshot

About Website

Welcome to a571.com homepage info - get ready to check A 571 best content for China right away, or after learning these important things about a571.com

杭州广告网有杭州广告公司库,杭州户外广告牌,浙江地区广告设计制作公司,杭州广告人才招聘,免费广告求服务征集案例发布,为广告主和广告公司提供一个交流平台.

Visit a571.com

Key Findings

We analyzed A571.com page load time and found that the first response time was 6.4 sec and then it took 23.7 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

a571.com performance score

50

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.8 s

55/100

10%

LCP (Largest Contentful Paint)

Value3.8 s

54/100

25%

SI (Speed Index)

Value6.5 s

39/100

10%

TBT (Total Blocking Time)

Value1,300 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.024

100/100

15%

TTI (Time to Interactive)

Value5.6 s

69/100

10%

Network Requests Diagram

a571.com

6382 ms

www.a571.com

4091 ms

base.css

1054 ms

indexa571.css

1052 ms

img_slide.js

1058 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 59% of them (33 requests) were addressed to the original A571.com, 30% (17 requests) were made to Img.a571.com and 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (9.8 sec) relates to the external source Img.a571.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 69.6 kB (45%)

Content Size

155.5 kB

After Optimization

85.9 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of A571.com main page is 155.5 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 15% of websites need less resources to load. Images take 74.2 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 54.6 kB

  • Original 66.9 kB
  • After minification 55.0 kB
  • After compression 12.3 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 11.9 kB, which is 18% 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 54.6 kB or 82% of the original size.

Image Optimization

-8%

Potential reduce by 5.8 kB

  • Original 74.2 kB
  • After minification 68.4 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. A 571 images are well optimized though.

JavaScript Optimization

-60%

Potential reduce by 4.5 kB

  • Original 7.5 kB
  • After minification 7.5 kB
  • After compression 3.0 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 4.5 kB or 60% of the original size.

CSS Optimization

-69%

Potential reduce by 4.7 kB

  • Original 6.8 kB
  • After minification 6.2 kB
  • After compression 2.1 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. A571.com needs all CSS files to be minified and compressed as it can save up to 4.7 kB or 69% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (28%)

Requests Now

53

After Optimization

38

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 53 CSS, Javascripts, AJAX and image requests in order to completely render the main page of A 571. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

a571.com

a571.com

6382 ms

www.a571.com

www.a571.com

4091 ms

base.css

base.css

1054 ms

indexa571.css

indexa571.css

1052 ms

img_slide.js

img_slide.js

1058 ms

gray1000.js

gray1000.js

1122 ms

20151012160257075.gif

20151012160257075.gif

1864 ms

a571logo_a.jpg

a571logo_a.jpg

6629 ms

5xw_ad.gif

5xw_ad.gif

1693 ms

dl.gif

dl.gif

607 ms

fb.gif

fb.gif

3027 ms

qz.gif

qz.gif

1065 ms

5stars-one.gif

5stars-one.gif

1128 ms

20140821161951259.jpg

20140821161951259.jpg

2622 ms

20110516143420153.gif

20110516143420153.gif

2168 ms

20151012164604493.gif

20151012164604493.gif

3636 ms

20150916140725660.jpg

20150916140725660.jpg

2160 ms

20120321184701875.jpg

20120321184701875.jpg

4075 ms

20160312104441089.jpg

20160312104441089.jpg

4345 ms

20150826084058716.jpg

20150826084058716.jpg

2670 ms

20140709174420960.jpg

20140709174420960.jpg

5099 ms

20160303153704407.jpg

20160303153704407.jpg

4892 ms

CheckLogin.js

CheckLogin.js

2937 ms

wxlg_ad.gif

wxlg_ad.gif

1502 ms

icon_50.gif

icon_50.gif

3099 ms

icon_60.gif

icon_60.gif

2016 ms

icon_80.gif

icon_80.gif

2145 ms

weather.js

weather.js

2092 ms

kf.php

kf.php

2591 ms

homescroll.js

homescroll.js

2227 ms

2015072909524379204.jpg

2015072909524379204.jpg

9295 ms

2014110616084998569.jpg

2014110616084998569.jpg

6524 ms

baidu.gif

baidu.gif

5026 ms

360.gif

360.gif

4568 ms

bing.gif

bing.gif

4617 ms

sogou.gif

sogou.gif

6458 ms

soso.gif

soso.gif

5122 ms

police.gif

police.gif

6648 ms

gongshang.jpg

gongshang.jpg

5623 ms

20140929134207059.gif

20140929134207059.gif

9776 ms

20151012155305262.gif

20151012155305262.gif

5189 ms

top_bg.gif

top_bg.gif

4526 ms

bge0511081.gif

bge0511081.gif

4141 ms

title1_0511081.gif

title1_0511081.gif

4547 ms

square.gif

square.gif

4550 ms

20160405101137919.jpg

20160405101137919.jpg

3646 ms

20160405101059156.jpg

20160405101059156.jpg

3051 ms

20140821162723921.jpg

20140821162723921.jpg

4874 ms

20150302132607399.jpg

20150302132607399.jpg

7109 ms

20150212104833057.jpg

20150212104833057.jpg

7902 ms

bottom_line1.gif

bottom_line1.gif

4633 ms

h.js

h.js

2141 ms

kf.php

kf.php

7510 ms

hm.gif

hm.gif

439 ms

sendacc.jsp

sendacc.jsp

1634 ms

kf_new.php

kf_new.php

2842 ms

Accessibility Review

a571.com accessibility score

60

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

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

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

Links do not have a discernible name

Best Practices

a571.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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

a571.com SEO score

58

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

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise A571.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 A571.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

a571.com

Open Graph description is not detected on the main page of A 571. 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: