Tools & Wizards About Us
517js.net screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% of other websites

  • 70

    Accessibility

    Visual factors better than
    that of 35% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

517js.net

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Page Load Speed

53.2 sec in total

First Response

10.4 sec

Resources Loaded

42.4 sec

Page Rendered

353 ms

517js.net screenshot

About Website

Click here to check amazing 517 Js content. Otherwise, check out these important facts you probably never knew about 517js.net

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Visit 517js.net

Key Findings

We analyzed 517js.net page load time and found that the first response time was 10.4 sec and then it took 42.7 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. Unfortunately, there was 1 request timeout, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

517js.net performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value13.1 s

0/100

25%

SI (Speed Index)

Value16.6 s

0/100

10%

TBT (Total Blocking Time)

Value190 ms

90/100

30%

CLS (Cumulative Layout Shift)

Value0.095

91/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

Network Requests Diagram

517js.net

10415 ms

all.css

4526 ms

templates.css

7745 ms

xcms.js

10178 ms

jquery.js

17263 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 85% of them (40 requests) were addressed to the original 517js.net, 4% (2 requests) were made to Js.tongji.linezing.com and 4% (2 requests) were made to Static.b.qq.com. The less responsive or slowest element that took the longest time to load (20 sec) relates to the external source Static.b.qq.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 27.7 kB (69%)

Content Size

40.1 kB

After Optimization

12.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of 517js.net main page is 40.1 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. Only 10% of websites need less resources to load. HTML takes 17.1 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 12.5 kB

  • Original 17.1 kB
  • After minification 14.4 kB
  • After compression 4.7 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 2.7 kB, which is 16% 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 12.5 kB or 73% of the original size.

Image Optimization

-8%

Potential reduce by 201 B

  • Original 2.5 kB
  • After minification 2.3 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. 517 Js images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 9.3 kB

  • Original 13.1 kB
  • After minification 10.8 kB
  • After compression 3.8 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 9.3 kB or 71% of the original size.

CSS Optimization

-77%

Potential reduce by 5.7 kB

  • Original 7.3 kB
  • After minification 6.9 kB
  • After compression 1.7 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. 517js.net needs all CSS files to be minified and compressed as it can save up to 5.7 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (47%)

Requests Now

43

After Optimization

23

  • Images
  • JavaScript
  • CSS

The browser has sent 43 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 517 Js. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

517js.net

517js.net

10415 ms

all.css

all.css

4526 ms

templates.css

templates.css

7745 ms

xcms.js

xcms.js

10178 ms

jquery.js

jquery.js

17263 ms

easySlider1.5.js

easySlider1.5.js

4014 ms

tongji.js

tongji.js

993 ms

wpa.js

wpa.js

20036 ms

wpa_a09.html

wpa_a09.html

1224 ms

bgline.png

bgline.png

418 ms

bodybg.jpg

bodybg.jpg

9129 ms

logo.png

logo.png

1322 ms

tableftB_hove.png

tableftB_hove.png

1442 ms

tabrightB_hove.png

tabrightB_hove.png

523 ms

tableftB.png

tableftB.png

516 ms

tabrightB.png

tabrightB.png

939 ms

bann_top_bottom.png

bann_top_bottom.png

1000 ms

bann_left_right_bg.png

bann_left_right_bg.png

976 ms

2011.jpg

2011.jpg

4240 ms

2012.jpg

2012.jpg

15219 ms

2013.jpg

2013.jpg

7234 ms

2014.jpg

2014.jpg

7973 ms

text.png

text.png

1957 ms

text_right.png

text_right.png

2479 ms

index1-1.jpg

index1-1.jpg

5709 ms

index1-2.jpg

index1-2.jpg

5697 ms

index1-3.jpg

index1-3.jpg

6931 ms

index1-4.jpg

index1-4.jpg

10176 ms

index1-5.jpg

index1-5.jpg

8160 ms

index1-6.jpg

index1-6.jpg

9944 ms

text_bottom.png

text_bottom.png

8468 ms

icon3.gif

icon3.gif

9472 ms

fotter_content_left.png

fotter_content_left.png

8924 ms

fotter_content_left_bg.png

fotter_content_left_bg.png

9430 ms

index-1.jpg

index-1.jpg

10773 ms

fotter_content_line.png

fotter_content_line.png

9912 ms

index-2.jpg

index-2.jpg

12906 ms

index-3.jpg

index-3.jpg

11228 ms

fotter_content_left_right.png

fotter_content_left_right.png

10445 ms

line_bg.jpg

line_bg.jpg

10828 ms

footbg.jpg

footbg.jpg

13986 ms

hm.js

hm.js

620 ms

tongji.do

tongji.do

2149 ms

icon1.gif

icon1.gif

255 ms

hm.gif

hm.gif

911 ms

bann_left.png

bann_left.png

8063 ms

bann_right_bg.png

bann_right_bg.png

8433 ms

Accessibility Review

517js.net 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

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

517js.net best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

517js.net SEO score

69

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

High

Page is blocked from indexing

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

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 517js.net 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 517js.net 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

517js.net

Open Graph description is not detected on the main page of 517 Js. 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: