Access 021ftp.cn. 上海网站建设|网站制作|营销型网站建设

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

26/100

10%

LCP (Largest Contentful Paint)

Value12.1 s

0/100

25%

SI (Speed Index)

Value30.4 s

0/100

10%

TBT (Total Blocking Time)

Value560 ms

53/100

30%

CLS (Cumulative Layout Shift)

Value0.328

35/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

021ftp.cn

5926 ms

Sharing1.css

4346 ms

logo.gif

2669 ms

logo02.gif

1363 ms

top1.jpg

1892 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 70% of them (51 requests) were addressed to the original 021ftp.cn, 8% (6 requests) were made to Pub.idqqimg.com and 7% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (10.8 sec) belongs to the original domain 021ftp.cn.

Content Size

241.8 kB

After Optimization

126.5 kB

In fact, the total size of 021ftp.cn main page is 241.8 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. 15% of websites need less resources to load. Images take 125.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 28.1 kB

Original 36.1 kB
After minification 34.6 kB
After compression 8.0 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. 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 28.1 kB or 78% of the original size.

Image Optimization

-24%

Potential reduce by 30.0 kB

Original 125.8 kB
After minification 95.7 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, 021 Ftp needs image optimization as it can save up to 30.0 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-61%

Potential reduce by 28.2 kB

Original 46.1 kB
After minification 45.5 kB
After compression 17.9 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 28.2 kB or 61% of the original size.

CSS Optimization

-86%

Potential reduce by 28.9 kB

Original 33.7 kB
After minification 30.2 kB
After compression 4.8 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. 021ftp.cn needs all CSS files to be minified and compressed as it can save up to 28.9 kB or 86% of the original size.

Requests Now

After Optimization

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 021 Ftp. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts 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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

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

High

Links are not crawlable

High

robots.txt is not valid

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

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 021ftp.cn 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 021ftp.cn 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

021ftp.cn

Open Graph description is not detected on the main page of 021 Ftp. 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

上海网站建设|网站制作|营销型网站建设_网至普网站建设公司

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

021ftp.cn

Sharing1.css

logo.gif

logo02.gif

top1.jpg

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

021ftp.cn

Sharing1.css

logo.gif

logo02.gif

top1.jpg

index_left.gif

index_right.gif

icon_more.gif

rignt_zy.gif

rignt_ytl.gif

rignt_ws.gif

rignt_cz.gif

021ftp01.jpg

%E5%A9%9A%E5%BA%86%E5%85%AC%E5%8F%B81.jpg

%E6%A0%BC%E6%9E%97%E8%B1%AA%E6%A3%AE%E5%9C%B0%E4%BA%A71.jpg

%E4%BF%8A%E7%A6%A7%E9%92%A2%E7%BB%93%E6%9E%841.jpg

UNISIGN%EF%BC%88%E5%A4%96%E8%B4%B8%EF%BC%89%201.jpg

%E5%BE%B7%E9%A6%A8%E9%A5%AE%E6%96%991.jpg

%E5%8F%A4%E5%B0%94%E5%B8%83%E5%85%B0%E6%A3%AE%E9%92%A2%E7%90%B41.jpg

021ftp02.jpg

%E5%9B%BD%E5%B9%B4%E5%BE%8B%E5%B8%881.jpg

j-c-bridge01.jpg

1745438.js

stat.php

click.aspx

getonline@Type=1&342913636_3A425024941

liuyan.js

msn.js

liuyan1.js

nav_bg.gif

nav_right_bg.gif

nav_left_bg.gif

line.gif

index_bg.gif

line_top.gif

icon_yuan.gif

line_bottom.gif

icon_point.gif

tu1.gif

tu2.gif

tu3.gif

tu4.gif

line_bottom1.gif