Access jyvalve.com. 上海精艺阀门制造有限公司

name

value

score

weighting

FCP (First Contentful Paint)

Value2.0 s

84/100

10%

LCP (Largest Contentful Paint)

Value7.1 s

5/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.184

66/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

jyvalve.com

1920 ms

www.jyvalve.com

3966 ms

uaredirect.js

2966 ms

style.css

1128 ms

dedecms.css

1691 ms

Our browser made a total of 68 requests to load all elements on the main page. We found that 59% of them (40 requests) were addressed to the original Jyvalve.com, 28% (19 requests) were made to Sysimages.tq.cn and 7% (5 requests) were made to Bdimg.share.baidu.com. The less responsive or slowest element that took the longest time to load (6.3 sec) belongs to the original domain Jyvalve.com.

Content Size

404.2 kB

After Optimization

202.8 kB

In fact, the total size of Jyvalve.com main page is 404.2 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 175.3 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 41.3 kB

Original 50.0 kB
After minification 49.8 kB
After compression 8.7 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. 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 41.3 kB or 83% of the original size.

Image Optimization

-24%

Potential reduce by 41.9 kB

Original 175.3 kB
After minification 133.4 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, Jyvalve needs image optimization as it can save up to 41.9 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

-60%

Potential reduce by 71.7 kB

Original 119.7 kB
After minification 119.7 kB
After compression 48.0 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 71.7 kB or 60% of the original size.

CSS Optimization

-79%

Potential reduce by 46.5 kB

Original 59.2 kB
After minification 48.2 kB
After compression 12.7 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. Jyvalve.com needs all CSS files to be minified and compressed as it can save up to 46.5 kB or 79% of the original size.

Requests Now

After Optimization

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jyvalve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

ARIA input fields do not have accessible names

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

These are opportunities to improve the legibility of your content.

High

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

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

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

Search Engine Optimization Advices

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 uses 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 Jyvalve.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 Jyvalve.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

jyvalve.com

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

上海精艺阀门制造有限公司

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

jyvalve.com

www.jyvalve.com

uaredirect.js

style.css

dedecms.css

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

jyvalve.com

www.jyvalve.com

uaredirect.js

style.css

dedecms.css

floatcard

shell_v2.js

ga.js

layout.css

page.css

logo.gif

ico_line.jpg

dh.jpg

class1.gif

code.gif

gsjj.jpg

gsjj_di.jpg

gg.jpg

con2.gif

lxfs_1.jpg

cp.jpg

5-150G516364cB-lp.jpg

5-150G516151X03-lp.jpg

5-150G5161043S4-lp.jpg

5-150F61AI0101-lp.jpg

5-150F6163U2392-lp.jpg

5-150F6162600923-lp.jpg

5-150F6161950911-lp.jpg

5-150F6161IND-lp.jpg

5-150F6161535213-lp.jpg

5-150F615503XS-lp.jpg

cp_right.jpg

zxcx.jpg

lxfs.jpg

link.jpg

__utm.gif

logo_bg.jpg

dh_bg.jpg

bds_s_v2.js

search-bt.gif

zxcx_bg.jpg

gsjj_bg_1.jpg

gsjj_bg.jpg