Tools & Wizards About Us
bluesky-filter.com screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

bluesky-filter.com

Air Filter Manufacturer, Filter Element, China Industrial Filters - Bluesky-filter

Page Load Speed

2 sec in total

First Response

250 ms

Resources Loaded

1.2 sec

Page Rendered

519 ms

bluesky-filter.com screenshot

About Website

Visit bluesky-filter.com now to see the best up-to-date Bluesky Filter content and also check out these interesting facts you probably never knew about bluesky-filter.com

NANJING BLUE SKY FILTER CO.,LTD is a professional China air filter manufacturer, we provide customers with filter elements and other China industrial filters with high quality and reasonable price. We...

Visit bluesky-filter.com

Key Findings

We analyzed Bluesky-filter.com page load time and found that the first response time was 250 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

bluesky-filter.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.8 s

27/100

10%

LCP (Largest Contentful Paint)

Value15.6 s

0/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value1,280 ms

18/100

30%

CLS (Cumulative Layout Shift)

Value0.196

63/100

15%

TTI (Time to Interactive)

Value19.5 s

2/100

10%

Network Requests Diagram

www.bluesky-filter.com

250 ms

graphic.css

50 ms

mailCollection.css

64 ms

style5.css

61 ms

faqList.css

77 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 4% of them (2 requests) were addressed to the original Bluesky-filter.com, 60% (32 requests) were made to 5lrorwxhklprrij.leadongcdn.com and 15% (8 requests) were made to 5ororwxhklprjij.leadongcdn.com. The less responsive or slowest element that took the longest time to load (445 ms) relates to the external source 5lrorwxhklprrij.leadongcdn.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 688.6 kB (9%)

Content Size

7.8 MB

After Optimization

7.1 MB

  • HTML
  • Images

In fact, the total size of Bluesky-filter.com main page is 7.8 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 7.4 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 298.1 kB

  • Original 354.6 kB
  • After minification 354.6 kB
  • After compression 56.4 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 298.1 kB or 84% of the original size.

Image Optimization

-5%

Potential reduce by 390.4 kB

  • Original 7.4 MB
  • After minification 7.0 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. Bluesky Filter images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 7 (14%)

Requests Now

50

After Optimization

43

  • Images
  • JavaScript
  • CSS

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bluesky Filter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.bluesky-filter.com

www.bluesky-filter.com

250 ms

graphic.css

graphic.css

50 ms

mailCollection.css

mailCollection.css

64 ms

style5.css

style5.css

61 ms

faqList.css

faqList.css

77 ms

quicknavigation.css

quicknavigation.css

85 ms

style.css

style.css

95 ms

ilkiKBlmijSRklprRijSknpqilSRnimlpqlmSRrjljprrkkiklokSRqiljmmoooirrRrrSk.css

ilkiKBlmijSRklprRijSknpqilSRnimlpqlmSRrjljprrkkiklokSRqiljmmoooirrRrrSk.css

70 ms

js

js

83 ms

css

css

82 ms

speedLazyLoad4.min.js

speedLazyLoad4.min.js

63 ms

gtm.js

gtm.js

143 ms

sprites.png

sprites.png

141 ms

Professional-Support.jpg

Professional-Support.jpg

204 ms

captcha

captcha

99 ms

logo.png

logo.png

66 ms

Professional-Support.jpg

Professional-Support.jpg

74 ms

Blue-Sky-Filters.jpg

Blue-Sky-Filters.jpg

84 ms

Supplier-to-the-Fortune-Global.jpg

Supplier-to-the-Fortune-Global.jpg

99 ms

From-Business-to-Partners.jpg

From-Business-to-Partners.jpg

281 ms

ISO14001-Certificated-Manufacturer-Eco-friendly-Sustainable.jpg

ISO14001-Certificated-Manufacturer-Eco-friendly-Sustainable.jpg

103 ms

1920.jpg

1920.jpg

98 ms

qiyeweixinjietu_17060661842650.png

qiyeweixinjietu_17060661842650.png

323 ms

The-Professional-Company-of-Filters.jpg

The-Professional-Company-of-Filters.jpg

294 ms

Grow-together-with-both-the-Customers-and-the-Staff.jpg

Grow-together-with-both-the-Customers-and-the-Staff.jpg

134 ms

BS1076-320-320.jpg

BS1076-320-320.jpg

135 ms

BS1281-320-320.jpg

BS1281-320-320.jpg

136 ms

BS130-320-320.jpg

BS130-320-320.jpg

136 ms

BS1077-320-320.jpg

BS1077-320-320.jpg

136 ms

BS1072-320-320.jpg

BS1072-320-320.jpg

145 ms

BS1056-320-320.jpg

BS1056-320-320.jpg

142 ms

BS1025-320-320.jpg

BS1025-320-320.jpg

143 ms

BS826-320-320.jpg

BS826-320-320.jpg

157 ms

lazyloading.png

lazyloading.png

162 ms

transparent.png

transparent.png

160 ms

5-640-640.png

5-640-640.png

173 ms

4-640-640.png

4-640-640.png

177 ms

3-640-640.png

3-640-640.png

179 ms

2-640-640.png

2-640-640.png

187 ms

1-640-640.png

1-640-640.png

193 ms

3-14-duibitu.jpg

3-14-duibitu.jpg

206 ms

NANJING-Blue-Sky-Filter-Co-LTD-Joined-IFA-in-Berlin.jpg

NANJING-Blue-Sky-Filter-Co-LTD-Joined-IFA-in-Berlin.jpg

445 ms

9yue4hao-IFA-Berlin.jpg

9yue4hao-IFA-Berlin.jpg

225 ms

2.jpg

2.jpg

234 ms

qiyeweixinjietu_17060661842650.png

qiyeweixinjietu_17060661842650.png

101 ms

lazyloading.png

lazyloading.png

97 ms

transparent.png

transparent.png

98 ms

style123tiny.png

style123tiny.png

97 ms

fastPhone.png

fastPhone.png

101 ms

lazyloading.png

lazyloading.png

76 ms

transparent.png

transparent.png

79 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

82 ms

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-xw.ttf

6xK-dSZaM9iE8KbpRA_LJ3z8mH9BOJvgkP8o58a-xw.ttf

67 ms

Accessibility Review

bluesky-filter.com accessibility score

76

Accessibility Issues

ARIA

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.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

[aria-hidden="true"] elements contain focusable descendents

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.

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.

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

bluesky-filter.com best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

bluesky-filter.com SEO score

83

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

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bluesky-filter.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 Bluesky-filter.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

bluesky-filter.com

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