Tools & Wizards About Us
preferredair.com screenshot

Report Summary

  • 62

    Performance

    Renders faster than
    77% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 77% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

preferredair.com

Preferred Air - Heating & Air Conditioning, Duct Fabrication, Humidification, Dehumidification, IAQ

Page Load Speed

2.7 sec in total

First Response

35 ms

Resources Loaded

1.4 sec

Page Rendered

1.3 sec

preferredair.com screenshot

About Website

Click here to check amazing Preferred Air content. Otherwise, check out these important facts you probably never knew about preferredair.com

Heating, Air Conditioning, and Humidification! Serving Boston's North Shore and Surrounding Areas. Preferred Air, Give Us a Call Today!

Visit preferredair.com

Key Findings

We analyzed Preferredair.com page load time and found that the first response time was 35 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

preferredair.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.4 s

17/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

40/100

25%

SI (Speed Index)

Value5.6 s

53/100

10%

TBT (Total Blocking Time)

Value300 ms

79/100

30%

CLS (Cumulative Layout Shift)

Value0.036

100/100

15%

TTI (Time to Interactive)

Value5.9 s

66/100

10%

Network Requests Diagram

preferredair.com

35 ms

preferredair.com

36 ms

www.preferredair.com

650 ms

preferred-air-b5ed96.61eb3f1e8.css

80 ms

js

73 ms

Our browser made a total of 38 requests to load all elements on the main page. We found that 8% of them (3 requests) were addressed to the original Preferredair.com, 76% (29 requests) were made to Assets-global.website-files.com and 5% (2 requests) were made to Cdn.jsdelivr.net. The less responsive or slowest element that took the longest time to load (650 ms) belongs to the original domain Preferredair.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 349.1 kB (7%)

Content Size

4.9 MB

After Optimization

4.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Preferredair.com main page is 4.9 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. 45% of websites need less resources to load. Images take 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 110.4 kB

  • Original 123.5 kB
  • After minification 123.4 kB
  • After compression 13.1 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 110.4 kB or 89% of the original size.

Image Optimization

-5%

Potential reduce by 237.4 kB

  • Original 4.6 MB
  • After minification 4.4 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. Preferred Air images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 0 B

  • Original 104.0 kB
  • After minification 104.0 kB
  • After compression 104.0 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. This website has mostly compressed JavaScripts.

CSS Optimization

-6%

Potential reduce by 1.2 kB

  • Original 19.9 kB
  • After minification 19.9 kB
  • After compression 18.7 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. Preferredair.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (9%)

Requests Now

35

After Optimization

32

  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Preferred Air. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

preferredair.com

preferredair.com

35 ms

preferredair.com

preferredair.com

36 ms

www.preferredair.com

www.preferredair.com

650 ms

preferred-air-b5ed96.61eb3f1e8.css

preferred-air-b5ed96.61eb3f1e8.css

80 ms

js

js

73 ms

slick.css

slick.css

33 ms

slick-theme.css

slick-theme.css

36 ms

jquery-3.5.1.min.dc5e7f18c8.js

jquery-3.5.1.min.dc5e7f18c8.js

30 ms

preferred-air-b5ed96.4a0e6b363.js

preferred-air-b5ed96.4a0e6b363.js

222 ms

slick.min.js

slick.min.js

32 ms

63d1f953e6a2707e37f2ccb9_PreferredAir%20Logo.svg

63d1f953e6a2707e37f2ccb9_PreferredAir%20Logo.svg

201 ms

63efa004a1bceea4c6308913_AdobeStock_521295341.webp

63efa004a1bceea4c6308913_AdobeStock_521295341.webp

229 ms

6420698cae66ab6ba8ecf95c_celebrating-32-years.svg

6420698cae66ab6ba8ecf95c_celebrating-32-years.svg

192 ms

6446d82741399f40982d4f6c_PreferredAir%20Logo%203.jpg

6446d82741399f40982d4f6c_PreferredAir%20Logo%203.jpg

157 ms

64e614cc2f59114580dc98a7_HeatPumpInstall_Logo_1C_Green.png

64e614cc2f59114580dc98a7_HeatPumpInstall_Logo_1C_Green.png

156 ms

640182b4b6c95f909d68d7f4__BOVA20%20with%20Installer%20copy%20(1)%20(1).jpeg

640182b4b6c95f909d68d7f4__BOVA20%20with%20Installer%20copy%20(1)%20(1).jpeg

251 ms

63d707eccdfd662b1220d842_ABC_Logo_Platinum%20Member.jpg

63d707eccdfd662b1220d842_ABC_Logo_Platinum%20Member.jpg

218 ms

63d206f3bb11e934a3cce1a6_Carrier.svg

63d206f3bb11e934a3cce1a6_Carrier.svg

160 ms

63ff7b25aa460fbe4f68bb35_ME_DC.svg

63ff7b25aa460fbe4f68bb35_ME_DC.svg

162 ms

63e96b35c21faae7d7cfcf75_thumbnail_28040401-b823-4061-8a65-3231c5aa4cb0.png

63e96b35c21faae7d7cfcf75_thumbnail_28040401-b823-4061-8a65-3231c5aa4cb0.png

245 ms

63e96b35eaf853e69c6643f9_thumbnail_13993bb4-3f3c-4c73-af84-2df4905dad28.png

63e96b35eaf853e69c6643f9_thumbnail_13993bb4-3f3c-4c73-af84-2df4905dad28.png

269 ms

63d707ec09ec2aa8bee4c741_ACCA%20logo.png

63d707ec09ec2aa8bee4c741_ACCA%20logo.png

208 ms

63d340fb2762ef881b6cd1bf_Heating.svg

63d340fb2762ef881b6cd1bf_Heating.svg

248 ms

63d340fb9f7570c89b9baf40_air.svg

63d340fb9f7570c89b9baf40_air.svg

281 ms

63d340fb6ca3b4dcd2fbf783_duct.svg

63d340fb6ca3b4dcd2fbf783_duct.svg

292 ms

63d360bba1dabc5ec6f37657_leaf.svg

63d360bba1dabc5ec6f37657_leaf.svg

286 ms

63d340fb8607116434dc1e66_boiler.svg

63d340fb8607116434dc1e66_boiler.svg

320 ms

63d340fb56f632a95ea3fb3a_heat.svg

63d340fb56f632a95ea3fb3a_heat.svg

284 ms

63d340fb645d6b933f6f2971_furnace.svg

63d340fb645d6b933f6f2971_furnace.svg

358 ms

63d360bb56f6320c53a62823_vent.svg

63d360bb56f6320c53a62823_vent.svg

319 ms

63ef063f0544ba139284704e_testerAsset%204.svg

63ef063f0544ba139284704e_testerAsset%204.svg

344 ms

63e938191eb4ad6a78f0df3a_e2ec1508-2819-46d5-82a2-f540b5a0d9ef.jpg

63e938191eb4ad6a78f0df3a_e2ec1508-2819-46d5-82a2-f540b5a0d9ef.jpg

459 ms

63ef04c8a90a0726faef084a_AdobeStock_433610381%20(1).jpeg

63ef04c8a90a0726faef084a_AdobeStock_433610381%20(1).jpeg

445 ms

63d360bb645d6b1b9d717a9a_humidifier.svg

63d360bb645d6b1b9d717a9a_humidifier.svg

455 ms

63d3663a5330994e2cb812d9_image%207.png

63d3663a5330994e2cb812d9_image%207.png

383 ms

63d3663b2762ef50c76f7912_image%208.png

63d3663b2762ef50c76f7912_image%208.png

389 ms

63d343899f757053529be5f9_PreferredAir%20Logo%203%20(1).jpg

63d343899f757053529be5f9_PreferredAir%20Logo%203%20(1).jpg

578 ms

ajax-loader.gif

ajax-loader.gif

38 ms

Accessibility Review

preferredair.com accessibility score

91

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-hidden="true"] elements contain focusable descendents

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

Best Practices

preferredair.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

preferredair.com SEO score

100

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

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

preferredair.com

Open Graph data is detected on the main page of Preferred Air. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: