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air-dvs.com.tw screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 92% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 88

    SEO

    Google-friendlier than
    65% of websites

air-dvs.com.tw

Air Blower and Centrifugal Blower-Air Deviser Industrial

Page Load Speed

4.1 sec in total

First Response

582 ms

Resources Loaded

3.4 sec

Page Rendered

163 ms

air-dvs.com.tw screenshot

About Website

Welcome to air-dvs.com.tw homepage info - get ready to check Air Dvs best content right away, or after learning these important things about air-dvs.com.tw

Air Blower and Centrifugal Blower Manufacturer apply on machinery, clean room, air shower, HVAC system.

Visit air-dvs.com.tw

Key Findings

We analyzed Air-dvs.com.tw page load time and found that the first response time was 582 ms and then it took 3.5 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

air-dvs.com.tw performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

36/100

10%

LCP (Largest Contentful Paint)

Value4.0 s

50/100

25%

SI (Speed Index)

Value7.8 s

23/100

10%

TBT (Total Blocking Time)

Value280 ms

81/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.4 s

48/100

10%

Network Requests Diagram

air-dvs.com.tw

582 ms

air-dvs.com.tw

788 ms

index.css

209 ms

bootstrap-4.4.1.css

636 ms

bootstrap.min.css

40 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 68% of them (26 requests) were addressed to the original Air-dvs.com.tw, 5% (2 requests) were made to Stackpath.bootstrapcdn.com and 5% (2 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Air-dvs.com.tw.

Page Optimization Overview & Recommendations

Page size can be reduced by 68.5 kB (10%)

Content Size

697.1 kB

After Optimization

628.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Air-dvs.com.tw main page is 697.1 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. 40% of websites need less resources to load. Images take 531.8 kB which makes up the majority of the site volume.

HTML Optimization

-70%

Potential reduce by 9.0 kB

  • Original 12.9 kB
  • After minification 12.2 kB
  • After compression 3.9 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 9.0 kB or 70% of the original size.

Image Optimization

-2%

Potential reduce by 10.9 kB

  • Original 531.8 kB
  • After minification 520.8 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. Air Dvs images are well optimized though.

JavaScript Optimization

-28%

Potential reduce by 30.9 kB

  • Original 110.5 kB
  • After minification 110.5 kB
  • After compression 79.6 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 30.9 kB or 28% of the original size.

CSS Optimization

-42%

Potential reduce by 17.7 kB

  • Original 42.1 kB
  • After minification 42.1 kB
  • After compression 24.4 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. Air-dvs.com.tw needs all CSS files to be minified and compressed as it can save up to 17.7 kB or 42% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (31%)

Requests Now

36

After Optimization

25

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 36 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Air Dvs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

air-dvs.com.tw

air-dvs.com.tw

582 ms

air-dvs.com.tw

air-dvs.com.tw

788 ms

index.css

index.css

209 ms

bootstrap-4.4.1.css

bootstrap-4.4.1.css

636 ms

bootstrap.min.css

bootstrap.min.css

40 ms

js

js

76 ms

jquery-3.3.1.slim.min.js

jquery-3.3.1.slim.min.js

29 ms

popper.min.js

popper.min.js

37 ms

bootstrap.min.js

bootstrap.min.js

50 ms

anime.min.js

anime.min.js

48 ms

jquery-3.4.1.min.js

jquery-3.4.1.min.js

982 ms

popper.min.js

popper.min.js

809 ms

bootstrap-4.4.1.js

bootstrap-4.4.1.js

1034 ms

6cqf994qq0

6cqf994qq0

109 ms

bg_body.jpg

bg_body.jpg

212 ms

logo.png

logo.png

814 ms

air_blower.jpg

air_blower.jpg

364 ms

centrifugal_blower.jpg

centrifugal_blower.jpg

406 ms

cross_flow_fan.jpg

cross_flow_fan.jpg

532 ms

double_blower_fan.jpg

double_blower_fan.jpg

567 ms

high_speed_fan_blower.jpg

high_speed_fan_blower.jpg

580 ms

high_temp_blower.jpg

high_temp_blower.jpg

603 ms

strip_blade_fan_wheel.jpg

strip_blade_fan_wheel.jpg

732 ms

pin_blade_fan_wheel.jpg

pin_blade_fan_wheel.jpg

772 ms

slogan.jpg

slogan.jpg

782 ms

centrifugal%20blower%20banner-1.png

centrifugal%20blower%20banner-1.png

980 ms

double%20blower%20fan%20banner-1.png

double%20blower%20fan%20banner-1.png

992 ms

furnace%20blower%20banner-1.png

furnace%20blower%20banner-1.png

1115 ms

english.jpg

english.jpg

976 ms

%E4%B8%AD%E6%96%87.jpg

%E4%B8%AD%E6%96%87.jpg

984 ms

qr%20code.jpg

qr%20code.jpg

1018 ms

js

js

77 ms

analytics.js

analytics.js

20 ms

clarity.js

clarity.js

38 ms

collect

collect

15 ms

engilsh_hover.jpg

engilsh_hover.jpg

211 ms

%E4%B8%AD%E6%96%87_hover.jpg

%E4%B8%AD%E6%96%87_hover.jpg

221 ms

c.gif

c.gif

6 ms

Accessibility Review

air-dvs.com.tw accessibility score

97

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

air-dvs.com.tw 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

air-dvs.com.tw SEO score

88

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Air-dvs.com.tw 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 Air-dvs.com.tw 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

air-dvs.com.tw

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