Tools & Wizards About Us

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 79

    Accessibility

    Visual factors better than
    that of 47% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

zoslonghvac.com

Air Grille,Air Damper,Hvac Air Filter,Air Duct - Zhongxinglong

Page Load Speed

4.2 sec in total

First Response

178 ms

Resources Loaded

3.6 sec

Page Rendered

462 ms

About Website

Click here to check amazing Zoslong Hvac content. Otherwise, check out these important facts you probably never knew about zoslonghvac.com

Zhongxinglong established in 1999 is a specialized manufacturer of air conditioning equipment. Including air dampers,Including Air Grille,Air Damper,Hvac Air Filter,Air Duct.

Visit zoslonghvac.com

Key Findings

We analyzed Zoslonghvac.com page load time and found that the first response time was 178 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

zoslonghvac.com performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.2 s

42/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value5.5 s

55/100

10%

TBT (Total Blocking Time)

Value390 ms

69/100

30%

CLS (Cumulative Layout Shift)

Value0.779

5/100

15%

TTI (Time to Interactive)

Value9.4 s

31/100

10%

Network Requests Diagram

zoslonghvac.com

178 ms

www.zoslonghvac.com

173 ms

www.zoslonghvac.com

601 ms

bootstrap.css

79 ms

font-awesome.min.css

149 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 98% of them (79 requests) were addressed to the original Zoslonghvac.com, 1% (1 request) were made to Googletagmanager.com and 1% (1 request) were made to Ta.sbird.xyz. The less responsive or slowest element that took the longest time to load (763 ms) belongs to the original domain Zoslonghvac.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 65.2 kB (2%)

Content Size

3.6 MB

After Optimization

3.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zoslonghvac.com main page is 3.6 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. 55% of websites need less resources to load. Images take 3.4 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 37.1 kB

  • Original 46.5 kB
  • After minification 34.9 kB
  • After compression 9.5 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 11.6 kB, which is 25% 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 37.1 kB or 80% of the original size.

Image Optimization

-1%

Potential reduce by 17.5 kB

  • Original 3.4 MB
  • After minification 3.4 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. Zoslong Hvac images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 7.3 kB

  • Original 77.4 kB
  • After minification 77.4 kB
  • After compression 70.1 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. This website has mostly compressed JavaScripts.

CSS Optimization

-8%

Potential reduce by 3.3 kB

  • Original 41.7 kB
  • After minification 41.7 kB
  • After compression 38.4 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. Zoslonghvac.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 18 (25%)

Requests Now

73

After Optimization

55

  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zoslong Hvac. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 16 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

zoslonghvac.com accessibility score

79

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

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

zoslonghvac.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

zoslonghvac.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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zoslonghvac.com can be misinterpreted by Google and other search engines. Our service has detected that English 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 Zoslonghvac.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

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