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a571.com screenshot

Report Summary

  • 70

    Performance

    Renders faster than
    81% 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

15.2 sec in total

First Response

738 ms

Resources Loaded

14.3 sec

Page Rendered

176 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 738 ms and then it took 14.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

a571.com performance score

70

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

83/100

10%

LCP (Largest Contentful Paint)

Value6.0 s

13/100

25%

SI (Speed Index)

Value5.8 s

50/100

10%

TBT (Total Blocking Time)

Value90 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.1 s

87/100

10%

Network Requests Diagram

a571.com

738 ms

www.a571.com

1403 ms

style.css

245 ms

indexa571.css

489 ms

img_slide.js

752 ms

Our browser made a total of 39 requests to load all elements on the main page. We found that 59% of them (23 requests) were addressed to the original A571.com, 33% (13 requests) were made to Img.5sw.com and 5% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (10.7 sec) relates to the external source Tb.53kf.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 74.1 kB (12%)

Content Size

592.6 kB

After Optimization

518.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of A571.com main page is 592.6 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. 35% of websites need less resources to load. Images take 507.5 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 32.0 kB

  • Original 42.0 kB
  • After minification 37.1 kB
  • After compression 10.0 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 12% 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 32.0 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 32.6 kB

  • Original 507.5 kB
  • After minification 474.9 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

-21%

Potential reduce by 8.2 kB

  • Original 38.6 kB
  • After minification 38.6 kB
  • After compression 30.4 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 8.2 kB or 21% of the original size.

CSS Optimization

-28%

Potential reduce by 1.3 kB

  • Original 4.5 kB
  • After minification 4.5 kB
  • After compression 3.3 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 1.3 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (19%)

Requests Now

37

After Optimization

30

  • Images
  • JavaScript
  • CSS

The browser has sent 37 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

738 ms

www.a571.com

www.a571.com

1403 ms

style.css

style.css

245 ms

indexa571.css

indexa571.css

489 ms

img_slide.js

img_slide.js

752 ms

jquery.js

jquery.js

1169 ms

gray.js

gray.js

945 ms

clock_new.js

clock_new.js

985 ms

indexa571.js

indexa571.js

986 ms

bg.png

bg.png

505 ms

20210106135307148.jpg

20210106135307148.jpg

1349 ms

a571logo.jpg

a571logo.jpg

295 ms

weixino.jpg

weixino.jpg

798 ms

20230424171920931.gif

20230424171920931.gif

1131 ms

20230621170803869.gif

20230621170803869.gif

1179 ms

20230928094243465.jpg

20230928094243465.jpg

1421 ms

20231201100932014.jpg

20231201100932014.jpg

1453 ms

20200227153254298.jpg

20200227153254298.jpg

1488 ms

20220830191711861.jpg

20220830191711861.jpg

1372 ms

20201204135038314.jpg

20201204135038314.jpg

1421 ms

20240430143739493.jpg

20240430143739493.jpg

1586 ms

20240301115210617.jpg

20240301115210617.jpg

1613 ms

20240430112959742.jpg

20240430112959742.jpg

1931 ms

20230928095452999.jpg

20230928095452999.jpg

2408 ms

c.js

c.js

254 ms

wxlg_ad.gif

wxlg_ad.gif

278 ms

top_bg.gif

top_bg.gif

301 ms

arrow_1.gif

arrow_1.gif

307 ms

css.png

css.png

519 ms

wind.jpg

wind.jpg

288 ms

ad_fcfb.jpg

ad_fcfb.jpg

285 ms

browser2.jpg

browser2.jpg

722 ms

5starlogo.png

5starlogo.png

494 ms

gongshang.jpg

gongshang.jpg

525 ms

biggongan.png

biggongan.png

524 ms

20190429140714260.jpg

20190429140714260.jpg

1408 ms

hm.js

hm.js

1241 ms

2

2

10650 ms

hm.gif

hm.gif

298 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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: