Tools & Wizards About Us
demcohvac.net screenshot

Report Summary

  • 95

    Performance

    Renders faster than
    93% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

demcohvac.net

Demco Mechanical Services & Metal Specialties 708-345-HVAC

Page Load Speed

786 ms in total

First Response

45 ms

Resources Loaded

660 ms

Page Rendered

81 ms

demcohvac.net screenshot

About Website

Click here to check amazing Demco HVAC content. Otherwise, check out these important facts you probably never knew about demcohvac.net

Demco Mechanical Services, Inc. is a commercial HVAC and metal specialties contractor excelling in onsite design-build applications. We service the following Illinois Counties: Cook, DuPage, Grundy, I...

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Key Findings

We analyzed Demcohvac.net page load time and found that the first response time was 45 ms and then it took 741 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 15% of websites can load faster.

Performance Metrics

demcohvac.net performance score

95

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.7 s

91/100

10%

LCP (Largest Contentful Paint)

Value2.7 s

85/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.7 s

100/100

10%

Network Requests Diagram

demcohvac.net

45 ms

demcohvac.com

219 ms

AC_RunActiveContent.js

56 ms

SpryMenuBar.js

109 ms

SpryMenuBarHorizontal.css

155 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that 8% of them (1 request) were addressed to the original Demcohvac.net, 92% (12 requests) were made to Demcohvac.com. The less responsive or slowest element that took the longest time to load (237 ms) relates to the external source Demcohvac.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 79.8 kB (37%)

Content Size

214.6 kB

After Optimization

134.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Demcohvac.net main page is 214.6 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. Only 10% of websites need less resources to load. Images take 199.7 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 5.2 kB

  • Original 7.6 kB
  • After minification 7.1 kB
  • After compression 2.4 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 5.2 kB or 68% of the original size.

Image Optimization

-36%

Potential reduce by 71.0 kB

  • Original 199.7 kB
  • After minification 128.8 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. Obviously, Demco HVAC needs image optimization as it can save up to 71.0 kB or 36% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-46%

Potential reduce by 2.6 kB

  • Original 5.7 kB
  • After minification 5.7 kB
  • After compression 3.1 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 2.6 kB or 46% of the original size.

CSS Optimization

-64%

Potential reduce by 1.0 kB

  • Original 1.6 kB
  • After minification 1.6 kB
  • After compression 563 B

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. Demcohvac.net needs all CSS files to be minified and compressed as it can save up to 1.0 kB or 64% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • Images
  • JavaScript
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Demco HVAC. According to our analytics all requests are already optimized.

Network Requests Diagram

demcohvac.net

demcohvac.net

45 ms

demcohvac.com

demcohvac.com

219 ms

AC_RunActiveContent.js

AC_RunActiveContent.js

56 ms

SpryMenuBar.js

SpryMenuBar.js

109 ms

SpryMenuBarHorizontal.css

SpryMenuBarHorizontal.css

155 ms

bkgrd.jpg

bkgrd.jpg

54 ms

button-up.jpg

button-up.jpg

55 ms

SpryMenuBarDown.gif

SpryMenuBarDown.gif

87 ms

HDR2.jpg

HDR2.jpg

106 ms

line-left.gif

line-left.gif

106 ms

gray-box2.png

gray-box2.png

237 ms

SpryMenuBarDownHover.gif

SpryMenuBarDownHover.gif

157 ms

SpryMenuBarRightHover.gif

SpryMenuBarRightHover.gif

157 ms

Accessibility Review

demcohvac.net accessibility score

91

Accessibility Issues

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

demcohvac.net best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

SEO Factors

demcohvac.net SEO score

64

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

Document uses plugins

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 Demcohvac.net 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 Demcohvac.net 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

demcohvac.net

Open Graph description is not detected on the main page of Demco 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: