Tools & Wizards About Us
sn-af.com screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

sn-af.com

China Primary Filter, Medium Filter, Industrial Filter Manufacturers, Suppliers, Factory - SN-AF

Page Load Speed

2.8 sec in total

First Response

102 ms

Resources Loaded

1.7 sec

Page Rendered

985 ms

sn-af.com screenshot

About Website

Welcome to sn-af.com homepage info - get ready to check SN AF best content right away, or after learning these important things about sn-af.com

Suzhou National Purification Technology Co.,Ltd: Supply the solution of air purification. HEPA filter, choose Suzhou National. Specializing in the production of fre-filter, medium-filter, HEPA, etc., ...

Visit sn-af.com

Key Findings

We analyzed Sn-af.com page load time and found that the first response time was 102 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

sn-af.com performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value7.4 s

28/100

10%

TBT (Total Blocking Time)

Value2,680 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.12

84/100

15%

TTI (Time to Interactive)

Value21.9 s

1/100

10%

Network Requests Diagram

sn-af.com

102 ms

sn-af.com

259 ms

www.sn-af.com

48 ms

css2

40 ms

style.css

270 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 48% of them (39 requests) were addressed to the original Sn-af.com, 16% (13 requests) were made to Css02.v15cdn.com and 16% (13 requests) were made to Img01.v15cdn.com. The less responsive or slowest element that took the longest time to load (1.3 sec) relates to the external source Tfile.xiaoman.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 157.5 kB (24%)

Content Size

647.3 kB

After Optimization

489.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sn-af.com main page is 647.3 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. 65% of websites need less resources to load. Images take 325.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 35.6 kB

  • Original 45.0 kB
  • After minification 43.6 kB
  • After compression 9.3 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 35.6 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 10.8 kB

  • Original 325.3 kB
  • After minification 314.5 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. SN AF images are well optimized though.

JavaScript Optimization

-45%

Potential reduce by 109.9 kB

  • Original 241.7 kB
  • After minification 241.7 kB
  • After compression 131.8 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 109.9 kB or 45% of the original size.

CSS Optimization

-3%

Potential reduce by 1.2 kB

  • Original 35.3 kB
  • After minification 35.3 kB
  • After compression 34.1 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. Sn-af.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 32 (43%)

Requests Now

74

After Optimization

42

  • Images
  • JavaScript
  • CSS

The browser has sent 74 CSS, Javascripts, AJAX and image requests in order to completely render the main page of SN AF. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

sn-af.com

sn-af.com

102 ms

sn-af.com

sn-af.com

259 ms

www.sn-af.com

www.sn-af.com

48 ms

css2

css2

40 ms

style.css

style.css

270 ms

swiper-animate.css

swiper-animate.css

269 ms

other.css

other.css

13 ms

js

js

75 ms

jquery-3.6.0.js

jquery-3.6.0.js

153 ms

Site_Common.js

Site_Common.js

158 ms

script.js

script.js

351 ms

home.js

home.js

349 ms

count.js

count.js

160 ms

float23212.js

float23212.js

21 ms

Other.js

Other.js

39 ms

analyze.js

analyze.js

1309 ms

iconfont.css

iconfont.css

319 ms

message.css

message.css

9 ms

gtm.js

gtm.js

99 ms

gtm.js

gtm.js

148 ms

en.webp

en.webp

356 ms

logo.png

logo.png

140 ms

cont.webp

cont.webp

137 ms

pt.webp

pt.webp

346 ms

de.webp

de.webp

353 ms

fr.webp

fr.webp

352 ms

ru.webp

ru.webp

356 ms

it.webp

it.webp

356 ms

ja.webp

ja.webp

352 ms

ar.webp

ar.webp

353 ms

es.webp

es.webp

357 ms

p202203211729097720653.webp

p202203211729097720653.webp

128 ms

p202203031343133130900.jpg

p202203031343133130900.jpg

127 ms

p202312120958321754916.jpg

p202312120958321754916.jpg

170 ms

p202203031343573130704.jpg

p202203031343573130704.jpg

169 ms

p202312120950288741083.jpg

p202312120950288741083.jpg

149 ms

p202312120951133121087.jpg

p202312120951133121087.jpg

168 ms

p202312121002291930831.jpg

p202312121002291930831.jpg

172 ms

p202312120952113281977.jpg

p202312120952113281977.jpg

170 ms

p202312120952582348471.jpg

p202312120952582348471.jpg

171 ms

p202312120954055636356.jpg

p202312120954055636356.jpg

175 ms

ba202006091513552005640.jpg

ba202006091513552005640.jpg

174 ms

ba202006091514166176978.jpg

ba202006091514166176978.jpg

195 ms

ba202006291449499287999.jpg

ba202006291449499287999.jpg

190 ms

pic1.jpg

pic1.jpg

195 ms

202312121117185d986d82ab664fd78084d48fa193fa35.jpg

202312121117185d986d82ab664fd78084d48fa193fa35.jpg

197 ms

pic3.png

pic3.png

198 ms

pic4.png

pic4.png

197 ms

pic5.jpg

pic5.jpg

498 ms

pic6.jpg

pic6.jpg

207 ms

p202203211729097720653.webp

p202203211729097720653.webp

203 ms

p202203031343133130900.jpg

p202203031343133130900.jpg

205 ms

p202312120958321754916.jpg

p202312120958321754916.jpg

206 ms

p202203031343573130704.jpg

p202203031343573130704.jpg

215 ms

ba1.png

ba1.png

213 ms

ba2.png

ba2.png

222 ms

ba3.png

ba3.png

217 ms

ba4.png

ba4.png

215 ms

n202403221415085da3a.jpg

n202403221415085da3a.jpg

226 ms

n20240320170856bcf26.jpg

n20240320170856bcf26.jpg

256 ms

n20240129104635afd6a.jpg

n20240129104635afd6a.jpg

228 ms

logo202312121436575271400.png

logo202312121436575271400.png

228 ms

dot-map.webp

dot-map.webp

124 ms

home-sel.webp

home-sel.webp

141 ms

b1.webp

b1.webp

142 ms

b2.webp

b2.webp

143 ms

b3.webp

b3.webp

141 ms

b4.webp

b4.webp

138 ms

b5.webp

b5.webp

139 ms

b6.webp

b6.webp

144 ms

s

s

336 ms

iconfont.woff

iconfont.woff

82 ms

iconfontvk.woff

iconfontvk.woff

60 ms

iconfont.woff

iconfont.woff

107 ms

rBQBG116ASmEA7CjAAAAAM7mhg04870.js

rBQBG116ASmEA7CjAAAAAM7mhg04870.js

268 ms

online.webp

online.webp

282 ms

email.webp

email.webp

283 ms

skype.webp

skype.webp

280 ms

wechat.webp

wechat.webp

283 ms

ga.js

ga.js

22 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

sn-af.com accessibility score

89

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

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

sn-af.com best practices score

67

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

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

sn-af.com SEO score

93

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

Links do not have descriptive text

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sn-af.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Sn-af.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

sn-af.com

Open Graph data is detected on the main page of SN AF. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: