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szlib.org.cn screenshot

Report Summary

  • 46

    Performance

    Renders faster than
    65% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 46

    SEO

    Google-friendlier than
    18% of websites

szlib.org.cn

ShenZhen Library

Page Load Speed

14.6 sec in total

First Response

809 ms

Resources Loaded

13.6 sec

Page Rendered

222 ms

szlib.org.cn screenshot

About Website

Click here to check amazing Szlib content for China. Otherwise, check out these important facts you probably never knew about szlib.org.cn

ShenZhen Library

Visit szlib.org.cn

Key Findings

We analyzed Szlib.org.cn page load time and found that the first response time was 809 ms and then it took 13.8 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

szlib.org.cn performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.6 s

0/100

25%

SI (Speed Index)

Value16.4 s

0/100

10%

TBT (Total Blocking Time)

Value110 ms

98/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value11.9 s

17/100

10%

Network Requests Diagram

szlib.org.cn

809 ms

www.szlib.org.cn

1882 ms

style_en_US.css

641 ms

jquery.jscrollpane.css

860 ms

api_v2.5.1.js

1510 ms

Our browser made a total of 66 requests to load all elements on the main page. We found that 94% of them (62 requests) were addressed to the original Szlib.org.cn, 5% (3 requests) were made to Api.map.baidu.com and 2% (1 request) were made to Statistics.szlib.org.cn. The less responsive or slowest element that took the longest time to load (5.3 sec) relates to the external source Api.map.baidu.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 794.3 kB (60%)

Content Size

1.3 MB

After Optimization

524.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Szlib.org.cn main page is 1.3 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. 25% of websites need less resources to load. Javascripts take 782.9 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 38.2 kB

  • Original 50.6 kB
  • After minification 45.9 kB
  • After compression 12.4 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 38.2 kB or 75% of the original size.

Image Optimization

-10%

Potential reduce by 32.8 kB

  • Original 319.1 kB
  • After minification 286.2 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. Szlib images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 587.1 kB

  • Original 782.9 kB
  • After minification 619.5 kB
  • After compression 195.8 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 587.1 kB or 75% of the original size.

CSS Optimization

-82%

Potential reduce by 136.2 kB

  • Original 166.1 kB
  • After minification 128.8 kB
  • After compression 29.9 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. Szlib.org.cn needs all CSS files to be minified and compressed as it can save up to 136.2 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 33 (52%)

Requests Now

64

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Szlib. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

szlib.org.cn

szlib.org.cn

809 ms

www.szlib.org.cn

www.szlib.org.cn

1882 ms

style_en_US.css

style_en_US.css

641 ms

jquery.jscrollpane.css

jquery.jscrollpane.css

860 ms

api_v2.5.1.js

api_v2.5.1.js

1510 ms

api

api

1148 ms

modernizr-2.6.1.min.js

modernizr-2.6.1.min.js

868 ms

jquery.js

jquery.js

1572 ms

jquery-ui.css

jquery-ui.css

1086 ms

jquery-ui.js

jquery-ui.js

3839 ms

jquery.mousewheel.js

jquery.mousewheel.js

1075 ms

jquery.jscrollpane.min.js

jquery.jscrollpane.min.js

1300 ms

jquery.cycle2.min.js

jquery.cycle2.min.js

1765 ms

jquery.cycle2.swipe.js

jquery.cycle2.swipe.js

1301 ms

jquery.jcarousel.min.js

jquery.jcarousel.min.js

1949 ms

html5media.js

html5media.js

1735 ms

jquery.isotope.min.js

jquery.isotope.min.js

1723 ms

jquery.colorbox.css

jquery.colorbox.css

1788 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

2367 ms

swfobject.js

swfobject.js

2209 ms

func.js

func.js

1981 ms

jquery.spriteOnHover-0.2.5.js

jquery.spriteOnHover-0.2.5.js

1582 ms

style.css

style.css

2393 ms

edittext.css

edittext.css

218 ms

layout.css

layout.css

433 ms

getscript

getscript

5336 ms

bmap.css

bmap.css

661 ms

print.css

print.css

218 ms

bg_body.png

bg_body.png

435 ms

ico_sidebar.png

ico_sidebar.png

217 ms

m_home.jpg

m_home.jpg

654 ms

szydg.jpg

szydg.jpg

633 ms

sinawb.png

sinawb.png

432 ms

WF.jpg

WF.jpg

647 ms

WD.jpg

WD.jpg

646 ms

douyin1.png

douyin1.png

544 ms

douyin.png

douyin.png

864 ms

bilibili1.png

bilibili1.png

761 ms

bilibili.png

bilibili.png

845 ms

logo.png

logo.png

862 ms

icon_top_canyou.png

icon_top_canyou.png

861 ms

icon_top_data.png

icon_top_data.png

870 ms

icon_top_login.png

icon_top_login.png

977 ms

bg_search.jpg

bg_search.jpg

1055 ms

ico_1.png

ico_1.png

1080 ms

ico.png

ico.png

1078 ms

indimg_a4.png

indimg_a4.png

1079 ms

indimgtab_1.png

indimgtab_1.png

1085 ms

jiangzuo.jpg

jiangzuo.jpg

1408 ms

indimg_a3.png

indimg_a3.png

1266 ms

indimgtab_2.png

indimgtab_2.png

1291 ms

shalong.jpg

shalong.jpg

1509 ms

indimg_a1.png

indimg_a1.png

1295 ms

indimgtab_3.png

indimgtab_3.png

1302 ms

yiyuan.jpg

yiyuan.jpg

1476 ms

indimg_a2.png

indimg_a2.png

1720 ms

indimgtab_4.png

indimgtab_4.png

1509 ms

zhanlan.jpg

zhanlan.jpg

1737 ms

ico_8.png

ico_8.png

1623 ms

sznet110wangan.gif

sznet110wangan.gif

1853 ms

sznet110gangting.gif

sznet110gangting.gif

2326 ms

gangting.gif

gangting.gif

1683 ms

bszs.png

bszs.png

1795 ms

line_1.gif

line_1.gif

1890 ms

piwik.js

piwik.js

1578 ms

ui-bg_flat_75_ffffff_40x100.png

ui-bg_flat_75_ffffff_40x100.png

287 ms

Accessibility Review

szlib.org.cn accessibility score

83

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

High

Links do not have a discernible name

Best Practices

szlib.org.cn best practices score

67

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

Missing source maps for large first-party JavaScript

SEO Factors

szlib.org.cn SEO score

46

Search Engine Optimization Advices

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Szlib.org.cn can be misinterpreted by Google and other search engines. Our service has detected that English 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 Szlib.org.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

szlib.org.cn

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