Tools & Wizards About Us

Report Summary

  • 8

    Performance

    Renders faster than
    22% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

centralvacuumdirect.com

Central Vacuum Systems, Bags & Parts | CentralVacuumDirect.com

Page Load Speed

3.3 sec in total

First Response

512 ms

Resources Loaded

2.3 sec

Page Rendered

473 ms

About Website

Click here to check amazing Central Vacuum Direct content for United States. Otherwise, check out these important facts you probably never knew about centralvacuumdirect.com

Shop for the largest selection of central vacuum systems, parts, hoses, & other accessories for your built-in vacuum, right here at CentralVacuumDirect.com.

Visit centralvacuumdirect.com

Key Findings

We analyzed Centralvacuumdirect.com page load time and found that the first response time was 512 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

centralvacuumdirect.com performance score

8

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.2 s

0/100

10%

LCP (Largest Contentful Paint)

Value10.2 s

0/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value2,730 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.293

41/100

15%

TTI (Time to Interactive)

Value21.1 s

1/100

10%

Network Requests Diagram

Default.asp

512 ms

jquery-ui.css

83 ms

default.css

86 ms

26920220114094221.css

91 ms

jquery-3.7.1.min.js

87 ms

Our browser made a total of 87 requests to load all elements on the main page. We found that 48% of them (42 requests) were addressed to the original Centralvacuumdirect.com, 23% (20 requests) were made to Cdn4.volusion.store and 5% (4 requests) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (713 ms) relates to the external source U.heatmap.it.

Page Optimization Overview & Recommendations

Page size can be reduced by 541.8 kB (33%)

Content Size

1.6 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Centralvacuumdirect.com main page is 1.6 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 755.8 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 159.6 kB

  • Original 205.1 kB
  • After minification 204.9 kB
  • After compression 45.5 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. 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 159.6 kB or 78% of the original size.

Image Optimization

-4%

Potential reduce by 29.4 kB

  • Original 755.8 kB
  • After minification 726.4 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. Central Vacuum Direct images are well optimized though.

JavaScript Optimization

-13%

Potential reduce by 41.2 kB

  • Original 310.8 kB
  • After minification 310.8 kB
  • After compression 269.6 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 41.2 kB or 13% of the original size.

CSS Optimization

-83%

Potential reduce by 311.6 kB

  • Original 377.2 kB
  • After minification 360.7 kB
  • After compression 65.6 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. Centralvacuumdirect.com needs all CSS files to be minified and compressed as it can save up to 311.6 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 40 (49%)

Requests Now

81

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 81 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Central Vacuum Direct. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

centralvacuumdirect.com accessibility score

74

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.

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 IDs are not unique

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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

centralvacuumdirect.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

SEO Factors

centralvacuumdirect.com SEO score

79

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

High

Image elements do not have [alt] attributes

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

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 Centralvacuumdirect.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 Centralvacuumdirect.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 Central Vacuum Direct. 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: