Access lsznk.com. 上海蓝十字脑科医院__同济大学附属脑科医院（筹）【官方网站】

name

value

score

weighting

FCP (First Contentful Paint)

Value5.7 s

5/100

10%

LCP (Largest Contentful Paint)

Value34.9 s

0/100

25%

SI (Speed Index)

Value14.8 s

1/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.217

57/100

15%

TTI (Time to Interactive)

Value28.5 s

0/100

10%

lsznk.com

1392 ms

www.lsznk.com

14887 ms

style_index.css

925 ms

nav.js

15657 ms

video_index.js

929 ms

Our browser made a total of 148 requests to load all elements on the main page. We found that 72% of them (106 requests) were addressed to the original Lsznk.com, 7% (10 requests) were made to Lxbjs.baidu.com and 5% (7 requests) were made to Js.nxgjbyy.com. The less responsive or slowest element that took the longest time to load (20.3 sec) belongs to the original domain Lsznk.com.

Content Size

532.7 kB

After Optimization

312.9 kB

In fact, the total size of Lsznk.com main page is 532.7 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. 30% of websites need less resources to load. Images take 310.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 54.8 kB

Original 69.3 kB
After minification 56.5 kB
After compression 14.5 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 12.8 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 54.8 kB or 79% of the original size.

Image Optimization

-16%

Potential reduce by 48.2 kB

Original 310.2 kB
After minification 262.0 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. Obviously, Lsznk needs image optimization as it can save up to 48.2 kB or 16% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 79.2 kB

Original 107.0 kB
After minification 98.6 kB
After compression 27.7 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 79.2 kB or 74% of the original size.

CSS Optimization

-81%

Potential reduce by 37.6 kB

Original 46.2 kB
After minification 41.5 kB
After compression 8.7 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. Lsznk.com needs all CSS files to be minified and compressed as it can save up to 37.6 kB or 81% of the original size.

Requests Now

121

After Optimization

The browser has sent 121 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lsznk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

Search Engine Optimization Advices

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

High

Links are not crawlable

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

High

Image elements do not have [alt] attributes

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/).

High

Document doesn't use legible font sizes

High

Tap targets are not sized appropriately

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 Lsznk.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 Lsznk.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

lsznk.com

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

Report Summary

Performance

Accessibility

Best Practices

SEO

上海蓝十字脑科医院__同济大学附属脑科医院（筹）【官方网站】

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

lsznk.com

www.lsznk.com

style_index.css

nav.js

video_index.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

lsznk.com

www.lsznk.com

style_index.css

nav.js

video_index.js

style_disease.css

jquery-1.11.3.min.js

TouchSlide.1.1.js

jquery-1.11.3.min.js

jquery.luara.0.0.1.min.js

master.css

banner.js

tabContent.js

nav_menu.js

public.css

tj.js

swt.js

097025fd9b4a574b225427ca01083e2d

index_04.jpg

index_06.jpg

index_16.jpg

index_11.jpg

index_13.jpg

nav.png

index_28.jpg

new_cxc.jpg

1200x120.jpg

index_38.jpg

index_48.jpg

index_49.jpg

index_cxc.jpg

index_50.jpg

index_57.jpg

index_58.jpg

index_59.jpg

index_64.jpg

index_65.jpg

index_66.jpg

index_88.jpg

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index_75.jpg

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