Tools & Wizards About Us
zeroenergy.com screenshot

Report Summary

  • 7

    Performance

    Renders faster than
    22% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

zeroenergy.com

ZeroEnergy Design - Boston Green Home Architect | Passive House & Net Zero Energy

Page Load Speed

1.5 sec in total

First Response

95 ms

Resources Loaded

1.2 sec

Page Rendered

231 ms

zeroenergy.com screenshot

About Website

Welcome to zeroenergy.com homepage info - get ready to check Zero Energy best content for United States right away, or after learning these important things about zeroenergy.com

ZeroEnergy Design is a green architect and mechanical design firm - focused on green home design, modern houses, Passive House architecture, LEED homes, contemporary architecture, zero energy homes, a...

Visit zeroenergy.com

Key Findings

We analyzed Zeroenergy.com page load time and found that the first response time was 95 ms and then it took 1.4 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

zeroenergy.com performance score

7

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value16.0 s

0/100

25%

SI (Speed Index)

Value9.6 s

11/100

10%

TBT (Total Blocking Time)

Value2,000 ms

8/100

30%

CLS (Cumulative Layout Shift)

Value0.453

20/100

15%

TTI (Time to Interactive)

Value18.0 s

3/100

10%

Network Requests Diagram

zeroenergy.com

95 ms

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85 ms

legacy.js

78 ms

modern.js

91 ms

extract-css-runtime-59bb4390c2a794e3304c-min.en-US.js

78 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Zeroenergy.com, 29% (12 requests) were made to Assets.squarespace.com and 21% (9 requests) were made to Use.typekit.net. The less responsive or slowest element that took the longest time to load (573 ms) relates to the external source Badges.dwell.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 223.5 kB (17%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Zeroenergy.com main page is 1.3 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. 50% of websites need less resources to load. Javascripts take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 138.3 kB

  • Original 163.2 kB
  • After minification 131.0 kB
  • After compression 24.8 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 32.1 kB, which is 20% 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 138.3 kB or 85% of the original size.

Image Optimization

-5%

Potential reduce by 1.7 kB

  • Original 36.1 kB
  • After minification 34.4 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. Zero Energy images are well optimized though.

JavaScript Optimization

-7%

Potential reduce by 83.4 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 1.1 MB

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

-9%

Potential reduce by 93 B

  • Original 1.1 kB
  • After minification 1.1 kB
  • After compression 973 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. Zeroenergy.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 20 (63%)

Requests Now

32

After Optimization

12

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 32 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zero Energy. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

zeroenergy.com

zeroenergy.com

95 ms

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85 ms

legacy.js

legacy.js

78 ms

modern.js

modern.js

91 ms

extract-css-runtime-59bb4390c2a794e3304c-min.en-US.js

extract-css-runtime-59bb4390c2a794e3304c-min.en-US.js

78 ms

extract-css-moment-js-vendor-6c569122bfa66a51a056-min.en-US.js

extract-css-moment-js-vendor-6c569122bfa66a51a056-min.en-US.js

103 ms

cldr-resource-pack-187e2495562332a04d43-min.en-US.js

cldr-resource-pack-187e2495562332a04d43-min.en-US.js

77 ms

common-vendors-stable-a6c5f460b212beb353ba-min.en-US.js

common-vendors-stable-a6c5f460b212beb353ba-min.en-US.js

90 ms

common-vendors-41ebc5fd2998540f5074-min.en-US.js

common-vendors-41ebc5fd2998540f5074-min.en-US.js

111 ms

common-e3df95010da85429a196-min.en-US.js

common-e3df95010da85429a196-min.en-US.js

119 ms

performance-51961d1f8ba011bba81e-min.en-US.js

performance-51961d1f8ba011bba81e-min.en-US.js

97 ms

site.css

site.css

101 ms

jquery.min.js

jquery.min.js

101 ms

js

js

391 ms

site-bundle.js

site-bundle.js

81 ms

jquery.event.move.js

jquery.event.move.js

45 ms

jquery.twentytwenty_mx.js

jquery.twentytwenty_mx.js

21 ms

twentytwenty.css

twentytwenty.css

5 ms

loader.js

loader.js

310 ms

fbevents.js

fbevents.js

438 ms

bat.js

bat.js

476 ms

ZED+logo-transparent.png

ZED+logo-transparent.png

393 ms

1x

1x

573 ms

image-asset.jpeg

image-asset.jpeg

164 ms

image-asset.jpeg

image-asset.jpeg

206 ms

d

d

64 ms

d

d

162 ms

d

d

99 ms

d

d

99 ms

d

d

100 ms

squarespace-ui-font.svg

squarespace-ui-font.svg

21 ms

social-icon-font.woff

social-icon-font.woff

21 ms

d

d

161 ms

d

d

161 ms

d

d

159 ms

icon-searchqueries-20-dark.png

icon-searchqueries-20-dark.png

74 ms

call-tracking_9.js

call-tracking_9.js

91 ms

p.gif

p.gif

107 ms

wcm

wcm

67 ms

341146566360008

341146566360008

114 ms

5997066.js

5997066.js

12 ms

r-100x40.png

r-100x40.png

310 ms

Accessibility Review

zeroenergy.com accessibility score

98

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.

Best Practices

zeroenergy.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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

zeroenergy.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

    EN

  • Encoding

    UTF-8

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

zeroenergy.com

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