Tools & Wizards About Us

Report Summary

  • 13

    Performance

    Renders faster than
    25% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 76

    SEO

    Google-friendlier than
    35% of websites

ductandvent.com

Duct & Vent Cleaning of America, Inc. | Duct Cleaning Service

Page Load Speed

2.1 sec in total

First Response

35 ms

Resources Loaded

1.7 sec

Page Rendered

401 ms

About Website

Welcome to ductandvent.com homepage info - get ready to check Duct And Vent best content for Pakistan right away, or after learning these important things about ductandvent.com

Duct & Vent Cleaning of America, Inc. was founded in 1989, and is a member of NADCA. They specialize in residential and commercial air duct cleaning.

Visit ductandvent.com

Key Findings

We analyzed Ductandvent.com page load time and found that the first response time was 35 ms and then it took 2.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

ductandvent.com performance score

13

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value24.3 s

0/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value2,910 ms

3/100

30%

CLS (Cumulative Layout Shift)

Value0.244

51/100

15%

TTI (Time to Interactive)

Value23.5 s

1/100

10%

Network Requests Diagram

ductandvent.com

35 ms

ductandvent.com

18 ms

www.ductandvent.com

25 ms

js

98 ms

bootstrap.min.css

14 ms

Our browser made a total of 81 requests to load all elements on the main page. We found that 46% of them (37 requests) were addressed to the original Ductandvent.com, 14% (11 requests) were made to Fonts.gstatic.com and 9% (7 requests) were made to Youtube.com. The less responsive or slowest element that took the longest time to load (558 ms) relates to the external source Cdn.yoshki.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 315.8 kB (31%)

Content Size

1.0 MB

After Optimization

703.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ductandvent.com main page is 1.0 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. 80% 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. Javascripts take 590.6 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 42.7 kB

  • Original 53.3 kB
  • After minification 51.6 kB
  • After compression 10.6 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 42.7 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 10.6 kB

  • Original 276.7 kB
  • After minification 266.1 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. Duct And Vent images are well optimized though.

JavaScript Optimization

-44%

Potential reduce by 260.6 kB

  • Original 590.6 kB
  • After minification 590.5 kB
  • After compression 330.0 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 260.6 kB or 44% of the original size.

CSS Optimization

-2%

Potential reduce by 1.9 kB

  • Original 98.5 kB
  • After minification 98.5 kB
  • After compression 96.5 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. Ductandvent.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 38 (59%)

Requests Now

64

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duct And Vent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

ductandvent.com accessibility score

75

Accessibility Issues

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

Buttons do not have an accessible name

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

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

Heading elements are not in a sequentially-descending order

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

Best Practices

ductandvent.com best practices score

75

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

High

Page has valid source maps

SEO Factors

ductandvent.com SEO score

76

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

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 Ductandvent.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 Ductandvent.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 data is detected on the main page of Duct And Vent. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: