Tools & Wizards About Us

Report Summary

  • 24

    Performance

    Renders faster than
    43% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

jsntzy.com

智勇电子-高清hdmi编码器-HDMI光端机-网络传输器-高清SDI光端机-DVI光端机-VGA光端机-视频USB采集卡-智勇电子

Page Load Speed

13.4 sec in total

First Response

1.1 sec

Resources Loaded

11.6 sec

Page Rendered

718 ms

About Website

Welcome to jsntzy.com homepage info - get ready to check Jsntzy best content for China right away, or after learning these important things about jsntzy.com

南通智勇电子有限公司长期致力于高清视音频信号传输设备的研发、生产和销售，主要产品有：高清编解码器，HDMI编码器，高清光端机，HDMI/SDI/VGA/KVM光端机，网络网线传输器，高清USB视频采集卡，视频转换器等，为广大用户提供高质量视音频信号的长距离传输解决方案。

Visit jsntzy.com

Key Findings

We analyzed Jsntzy.com page load time and found that the first response time was 1.1 sec and then it took 12.3 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

jsntzy.com performance score

24

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.3 s

3/100

10%

LCP (Largest Contentful Paint)

Value13.7 s

0/100

25%

SI (Speed Index)

Value20.9 s

0/100

10%

TBT (Total Blocking Time)

Value970 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value17.4 s

4/100

10%

Network Requests Diagram

jsntzy.com

1054 ms

jsntzy.com

1356 ms

32_zh-cn.html.Head.js

1413 ms

32_zh-cn.html.Body.js

2961 ms

pcstyle.css

481 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 5% of them (4 requests) were addressed to the original Jsntzy.com, 89% (66 requests) were made to Nwzimg.wezhan.cn and 3% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (3.3 sec) relates to the external source Nwzimg.wezhan.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.9 MB (16%)

Content Size

11.7 MB

After Optimization

9.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jsntzy.com main page is 11.7 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. 55% of websites need less resources to load. Images take 11.1 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 227.7 kB

  • Original 255.9 kB
  • After minification 230.0 kB
  • After compression 28.3 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 227.7 kB or 89% of the original size.

Image Optimization

-15%

Potential reduce by 1.6 MB

  • Original 11.1 MB
  • After minification 9.5 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. Obviously, Jsntzy needs image optimization as it can save up to 1.6 MB or 15% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-12%

Potential reduce by 36.3 kB

  • Original 309.0 kB
  • After minification 309.0 kB
  • After compression 272.7 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 36.3 kB or 12% of the original size.

CSS Optimization

-27%

Potential reduce by 9.0 kB

  • Original 32.8 kB
  • After minification 28.1 kB
  • After compression 23.8 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. Jsntzy.com needs all CSS files to be minified and compressed as it can save up to 9.0 kB or 27% of the original size.

Requests Breakdown

Number of requests can be reduced by 24 (34%)

Requests Now

70

After Optimization

46

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jsntzy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 17 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jsntzy.com accessibility score

54

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

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

jsntzy.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

jsntzy.com SEO score

83

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Jsntzy.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 Jsntzy.com 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

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