Tools & Wizards About Us

Report Summary

  • 4

    Performance

    Renders faster than
    20% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 90

    SEO

    Google-friendlier than
    68% of websites

jsrd.net

单警装备厂家-单兵防暴防护器材-强光手电-江苏锐盾警用装备制造有限公司

Page Load Speed

13.1 sec in total

First Response

1.1 sec

Resources Loaded

11.2 sec

Page Rendered

777 ms

About Website

Welcome to jsrd.net homepage info - get ready to check Jsrd best content right away, or after learning these important things about jsrd.net

哪里有卖警用器材?江苏锐盾警用装备制造有限公司主营伸缩警棍,警用防爆器材,抓捕网枪,单警强光手电等警用器材,是国内较好的警用装备公司,为警务人员提供各类智能警装备柜,毒品探测仪,单兵通讯等产品研发、生产和销售的国家高新技术企业。

Visit jsrd.net

Key Findings

We analyzed Jsrd.net page load time and found that the first response time was 1.1 sec and then it took 12 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

jsrd.net performance score

4

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.4 s

1/100

10%

LCP (Largest Contentful Paint)

Value17.6 s

0/100

25%

SI (Speed Index)

Value27.7 s

0/100

10%

TBT (Total Blocking Time)

Value1,780 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.799

5/100

15%

TTI (Time to Interactive)

Value43.2 s

0/100

10%

Network Requests Diagram

jsrd.net

1096 ms

www.jsrd.net

2602 ms

animate.css,iconfont.css,bootstrap.min.css,response.min.css

239 ms

site_impt_r.css

269 ms

page_impt_Home1.css

271 ms

Our browser made a total of 113 requests to load all elements on the main page. We found that 32% of them (36 requests) were addressed to the original Jsrd.net, 19% (22 requests) were made to Img203.yun300.cn and 19% (22 requests) were made to Static.yun300.cn. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Jsrd.net.

Page Optimization Overview & Recommendations

Page size can be reduced by 2.8 MB (21%)

Content Size

13.6 MB

After Optimization

10.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jsrd.net main page is 13.6 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. Only a small number of websites need less resources to load. Images take 12.5 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 222.5 kB

  • Original 262.2 kB
  • After minification 226.4 kB
  • After compression 39.8 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 35.9 kB, which is 14% 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 222.5 kB or 85% of the original size.

Image Optimization

-17%

Potential reduce by 2.1 MB

  • Original 12.5 MB
  • After minification 10.4 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, Jsrd needs image optimization as it can save up to 2.1 MB or 17% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-6%

Potential reduce by 9.9 kB

  • Original 163.8 kB
  • After minification 163.8 kB
  • After compression 153.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-85%

Potential reduce by 510.4 kB

  • Original 601.3 kB
  • After minification 314.2 kB
  • After compression 91.0 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. Jsrd.net needs all CSS files to be minified and compressed as it can save up to 510.4 kB or 85% of the original size.

Requests Breakdown

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

Requests Now

101

After Optimization

67

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 101 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jsrd. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 31 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

jsrd.net accessibility score

82

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

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

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

jsrd.net best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

jsrd.net SEO score

90

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

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 Jsrd.net 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 Jsrd.net 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 Jsrd. 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: