Tools & Wizards About Us
derryplumbingandheating.com screenshot

Report Summary

  • 58

    Performance

    Renders faster than
    74% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

derryplumbingandheating.com

HVAC | Derry, NH | Derry Plumbing & Heating

Page Load Speed

1 sec in total

First Response

27 ms

Resources Loaded

384 ms

Page Rendered

622 ms

derryplumbingandheating.com screenshot

About Website

Welcome to derryplumbingandheating.com homepage info - get ready to check Derry Plumbing And Heating best content right away, or after learning these important things about derryplumbingandheating.com

We are the HVAC professionals you can rely on! Call our office at (603) 432-8564 in Derry, NH!

Visit derryplumbingandheating.com

Key Findings

We analyzed Derryplumbingandheating.com page load time and found that the first response time was 27 ms and then it took 1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

derryplumbingandheating.com performance score

58

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.9 s

86/100

10%

LCP (Largest Contentful Paint)

Value3.0 s

79/100

25%

SI (Speed Index)

Value4.1 s

79/100

10%

TBT (Total Blocking Time)

Value1,660 ms

11/100

30%

CLS (Cumulative Layout Shift)

Value0.023

100/100

15%

TTI (Time to Interactive)

Value9.2 s

32/100

10%

Network Requests Diagram

derryplumbingandheating.com

27 ms

www.derryplumbingandheating.com

121 ms

kv-1920w.jpg

156 ms

jquery-3.7.0.min.js

42 ms

d-js-one-runtime-unified-desktop.min.js

56 ms

Our browser made a total of 15 requests to load all elements on the main page. We found that 40% of them (6 requests) were addressed to the original Derryplumbingandheating.com, 27% (4 requests) were made to Lirp.cdn-website.com and 27% (4 requests) were made to Static.cdn-website.com. The less responsive or slowest element that took the longest time to load (196 ms) relates to the external source Lirp.cdn-website.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 106.9 kB (33%)

Content Size

325.2 kB

After Optimization

218.3 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Derryplumbingandheating.com main page is 325.2 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. 20% of websites need less resources to load. HTML takes 156.3 kB which makes up the majority of the site volume.

HTML Optimization

-68%

Potential reduce by 106.5 kB

  • Original 156.3 kB
  • After minification 151.3 kB
  • After compression 49.8 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. 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 106.5 kB or 68% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 13.4 kB
  • After minification 13.4 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. Derry Plumbing And Heating images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 446 B

  • Original 155.6 kB
  • After minification 155.6 kB
  • After compression 155.1 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. This website has mostly compressed JavaScripts.

Requests Breakdown

Number of requests can be reduced by 8 (62%)

Requests Now

13

After Optimization

5

  • Images
  • JavaScript

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Derry Plumbing And Heating. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

derryplumbingandheating.com

derryplumbingandheating.com

27 ms

www.derryplumbingandheating.com

www.derryplumbingandheating.com

121 ms

kv-1920w.jpg

kv-1920w.jpg

156 ms

jquery-3.7.0.min.js

jquery-3.7.0.min.js

42 ms

d-js-one-runtime-unified-desktop.min.js

d-js-one-runtime-unified-desktop.min.js

56 ms

d-js-jquery-migrate.min.js

d-js-jquery-migrate.min.js

41 ms

popup.js

popup.js

11 ms

helpers.js

helpers.js

28 ms

userVisitsConditionService.js

userVisitsConditionService.js

29 ms

timeRangeConditionService.js

timeRangeConditionService.js

36 ms

rrule.min.js

rrule.min.js

59 ms

dxmscript.min.js

dxmscript.min.js

167 ms

Derry-Plumbing-366w.png

Derry-Plumbing-366w.png

89 ms

parallax-home-1152w.jpg

parallax-home-1152w.jpg

196 ms

supp-home-683h.jpg

supp-home-683h.jpg

95 ms

Accessibility Review

derryplumbingandheating.com accessibility score

85

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.

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

derryplumbingandheating.com 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

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

derryplumbingandheating.com SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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 Derryplumbingandheating.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 Derryplumbingandheating.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

derryplumbingandheating.com

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