Tools & Wizards About Us
zjnhaf.com screenshot

Report Summary

  • 86

    Performance

    Renders faster than
    89% of other websites

  • 34

    Accessibility

    Visual factors better than
    that of 18% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

zjnhaf.com

南核安全装备（浙江）有限公司（官网）

Page Load Speed

6.6 sec in total

First Response

1.3 sec

Resources Loaded

5.1 sec

Page Rendered

195 ms

zjnhaf.com screenshot

About Website

Click here to check amazing Zjnhaf content for China. Otherwise, check out these important facts you probably never knew about zjnhaf.com

南核安全装备（浙江）有限公司是一家一直致力于个人防护用品产品特别是呼吸防护产品的研究和开发，努力追求在产品性能和功能上的完美表现，“优质材料，尖端技术，创新理念和合作伙伴”是南核立足高端市场的宝典所在，并在未来继续发扬光大。

Visit zjnhaf.com

Key Findings

We analyzed Zjnhaf.com page load time and found that the first response time was 1.3 sec and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

zjnhaf.com performance score

86

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value2.4 s

91/100

25%

SI (Speed Index)

Value8.8 s

16/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.01

100/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

Network Requests Diagram

zjnhaf.com

1303 ms

t.css

654 ms

jquery.js

1311 ms

clearbox.js

440 ms

jquery.LoadImage.js

451 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that all of those requests were addressed to Zjnhaf.com and no external sources were called. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Zjnhaf.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 108.6 kB (6%)

Content Size

1.9 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zjnhaf.com main page is 1.9 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. 20% of websites need less resources to load. Images take 1.7 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 18.8 kB

  • Original 24.0 kB
  • After minification 20.2 kB
  • After compression 5.2 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 3.8 kB, which is 16% 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 18.8 kB or 78% of the original size.

Image Optimization

-1%

Potential reduce by 9.4 kB

  • Original 1.7 MB
  • After minification 1.7 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. Zjnhaf images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 69.5 kB

  • Original 105.7 kB
  • After minification 100.1 kB
  • After compression 36.1 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 69.5 kB or 66% of the original size.

CSS Optimization

-77%

Potential reduce by 10.9 kB

  • Original 14.0 kB
  • After minification 12.6 kB
  • After compression 3.2 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. Zjnhaf.com needs all CSS files to be minified and compressed as it can save up to 10.9 kB or 77% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (15%)

Requests Now

40

After Optimization

34

  • Images
  • JavaScript
  • CSS

The browser has sent 40 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zjnhaf. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zjnhaf.com

zjnhaf.com

1303 ms

t.css

t.css

654 ms

jquery.js

jquery.js

1311 ms

clearbox.js

clearbox.js

440 ms

jquery.LoadImage.js

jquery.LoadImage.js

451 ms

photo-info.js

photo-info.js

457 ms

imageMarquee.js

imageMarquee.js

654 ms

jQuery.textSlider.js

jQuery.textSlider.js

668 ms

base.js

base.js

672 ms

cb_style.css

cb_style.css

225 ms

cb_config.js

cb_config.js

226 ms

cb_language.js

cb_language.js

220 ms

cb_core.js

cb_core.js

224 ms

bg.jpg

bg.jpg

245 ms

index_02.jpg

index_02.jpg

307 ms

20140221155856.jpg

20140221155856.jpg

1024 ms

20140221155851.jpg

20140221155851.jpg

1165 ms

20140221155846.jpg

20140221155846.jpg

1368 ms

20150109131604.jpg

20150109131604.jpg

999 ms

20140221155839.jpg

20140221155839.jpg

1384 ms

20140221155834.jpg

20140221155834.jpg

2256 ms

20140221155826.jpg

20140221155826.jpg

1889 ms

20140121095356.jpg

20140121095356.jpg

1321 ms

20141018103255.jpg

20141018103255.jpg

1477 ms

20140224155815.jpg

20140224155815.jpg

1897 ms

20140121100127.jpg

20140121100127.jpg

1694 ms

20140121100116.jpg

20140121100116.jpg

1664 ms

20140224145146.jpg

20140224145146.jpg

1819 ms

index_06.jpg

index_06.jpg

1915 ms

more.jpg

more.jpg

1928 ms

index_09.jpg

index_09.jpg

2053 ms

index_07.jpg

index_07.jpg

2114 ms

index_08.jpg

index_08.jpg

2116 ms

index_10.jpg

index_10.jpg

2147 ms

pc.jpg

pc.jpg

2192 ms

top.jpg

top.jpg

2302 ms

menu_01.jpg

menu_01.jpg

2323 ms

menu_02.jpg

menu_02.jpg

2318 ms

menu_03.jpg

menu_03.jpg

2335 ms

index_01.jpg

index_01.jpg

2383 ms

flash.jpg

flash.jpg

2441 ms

index_03.jpg

index_03.jpg

2521 ms

index_04.jpg

index_04.jpg

2536 ms

index_05.jpg

index_05.jpg

2548 ms

end.jpg

end.jpg

2567 ms

loading.gif

loading.gif

1540 ms

sprite.png

sprite.png

1593 ms

Accessibility Review

zjnhaf.com accessibility score

34

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

zjnhaf.com best practices score

50

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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

zjnhaf.com SEO score

67

Search Engine Optimization Advices

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

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 Zjnhaf.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 Zjnhaf.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

zjnhaf.com

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