Tools & Wizards About Us
sdz.cn screenshot

Report Summary

  • 93

    Performance

    Renders faster than
    92% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

sdz.cn

东台中学

Page Load Speed

26.3 sec in total

First Response

2.5 sec

Resources Loaded

23.5 sec

Page Rendered

286 ms

sdz.cn screenshot

About Website

Visit sdz.cn now to see the best up-to-date Sdz content and also check out these interesting facts you probably never knew about sdz.cn

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Visit sdz.cn

Key Findings

We analyzed Sdz.cn page load time and found that the first response time was 2.5 sec and then it took 23.8 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

sdz.cn performance score

93

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.1 s

96/100

25%

SI (Speed Index)

Value5.5 s

54/100

10%

TBT (Total Blocking Time)

Value10 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value2.0 s

99/100

10%

Network Requests Diagram

sdz.cn

2509 ms

default.css

462 ms

index.css

467 ms

jquery.pack.js

1202 ms

jquery.peex.js

976 ms

Our browser made a total of 49 requests to load all elements on the main page. We found that 98% of them (48 requests) were addressed to the original Sdz.cn, 2% (1 request) were made to Dcs.conac.cn. The less responsive or slowest element that took the longest time to load (19.9 sec) relates to the external source Dcs.conac.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 267.4 kB (11%)

Content Size

2.5 MB

After Optimization

2.3 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sdz.cn main page is 2.5 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. 45% of websites need less resources to load. Images take 2.3 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 43.0 kB

  • Original 53.8 kB
  • After minification 50.5 kB
  • After compression 10.8 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 43.0 kB or 80% of the original size.

Image Optimization

-3%

Potential reduce by 71.5 kB

  • Original 2.3 MB
  • After minification 2.2 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. Sdz images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 141.9 kB

  • Original 192.2 kB
  • After minification 145.2 kB
  • After compression 50.3 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 141.9 kB or 74% of the original size.

CSS Optimization

-77%

Potential reduce by 11.0 kB

  • Original 14.3 kB
  • After minification 11.9 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. Sdz.cn needs all CSS files to be minified and compressed as it can save up to 11.0 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 3 (6%)

Requests Now

47

After Optimization

44

  • Images
  • JavaScript
  • CSS

The browser has sent 47 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sdz. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sdz.cn

sdz.cn

2509 ms

default.css

default.css

462 ms

index.css

index.css

467 ms

jquery.pack.js

jquery.pack.js

1202 ms

jquery.peex.js

jquery.peex.js

976 ms

jquery.SuperSlide.2.1.1.js

jquery.SuperSlide.2.1.1.js

502 ms

bg.png

bg.png

3492 ms

3.js

3.js

238 ms

ft_bg.png

ft_bg.png

244 ms

logo.png

logo.png

251 ms

fdj.png

fdj.png

240 ms

201605101346432645_1180_311.png

201605101346432645_1180_311.png

1255 ms

201605111228097397_1180_311.png

201605111228097397_1180_311.png

933 ms

201605111228221112_1180_311.png

201605111228221112_1180_311.png

971 ms

202105250903474487_356_240.JPG

202105250903474487_356_240.JPG

728 ms

202104280918058045_356_240.png

202104280918058045_356_240.png

734 ms

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202104141054021856_356_240.jpg

1215 ms

202104091613163637_356_240.JPG

202104091613163637_356_240.JPG

1222 ms

001_168_129.jpg

001_168_129.jpg

1163 ms

002_168_129.jpg

002_168_129.jpg

1202 ms

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20101224135023328_168_129.jpg

1401 ms

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20101224142241469_168_129.jpg

1440 ms

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201606011406423555_168_129.jpg

1462 ms

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201606011406089772_168_129.jpg

1466 ms

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201606011405186454_168_129.jpg

1503 ms

201606011403399265_168_129.jpg

201606011403399265_168_129.jpg

1630 ms

201606011402424599_168_129.jpg

201606011402424599_168_129.jpg

1682 ms

2015091015565934_168_129.jpg

2015091015565934_168_129.jpg

1704 ms

2015091015561599_168_129.jpg

2015091015561599_168_129.jpg

1707 ms

2015091015520773_168_129.jpg

2015091015520773_168_129.jpg

1751 ms

ewm.png

ewm.png

1860 ms

nav_bg.png

nav_bg.png

1912 ms

ul1_bg.jpg

ul1_bg.jpg

1944 ms

prev2.png

prev2.png

1938 ms

next2.png

next2.png

1988 ms

news_hd.jpg

news_hd.jpg

2071 ms

png.png

png.png

2137 ms

dot.jpg

dot.jpg

2165 ms

icon1.jpg

icon1.jpg

2165 ms

next.png

next.png

2223 ms

prev.png

prev.png

2293 ms

icon2.png

icon2.png

2359 ms

boxTab_h3.png

boxTab_h3.png

2389 ms

CA111761357603848050002.js

CA111761357603848050002.js

19906 ms

xyfc.png

xyfc.png

2202 ms

prev1.png

prev1.png

2259 ms

next1.png

next1.png

2305 ms

sidetop.png

sidetop.png

249 ms

meg.png

meg.png

235 ms

Accessibility Review

sdz.cn accessibility score

61

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

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

sdz.cn 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

sdz.cn SEO score

85

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 uses legible font sizes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sdz.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Sdz.cn 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

sdz.cn

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