Tools & Wizards About Us
johnstonboiler.com screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 74

    Accessibility

    Visual factors better than
    that of 40% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

johnstonboiler.com

Industrial Boiler Manufacturers Since 1864 | Johnston Boiler

Page Load Speed

6.2 sec in total

First Response

1.1 sec

Resources Loaded

4.6 sec

Page Rendered

567 ms

johnstonboiler.com screenshot

About Website

Visit johnstonboiler.com now to see the best up-to-date Johnston Boiler content and also check out these interesting facts you probably never knew about johnstonboiler.com

Industrial boiler manufacturers for over 150 years. Commercial & industrial firetube boilers, water-backed and steam boilers. Manufactured in Grand Rapids, MI.

Visit johnstonboiler.com

Key Findings

We analyzed Johnstonboiler.com page load time and found that the first response time was 1.1 sec and then it took 5.1 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

johnstonboiler.com performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value9.3 s

1/100

25%

SI (Speed Index)

Value11.4 s

5/100

10%

TBT (Total Blocking Time)

Value18,420 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.116

85/100

15%

TTI (Time to Interactive)

Value33.0 s

0/100

10%

Network Requests Diagram

www.johnstonboiler.com

1074 ms

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49 ms

jquery.min.js

199 ms

jquery-migrate.min.js

337 ms

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47 ms

Our browser made a total of 94 requests to load all elements on the main page. We found that 54% of them (51 requests) were addressed to the original Johnstonboiler.com, 13% (12 requests) were made to Fonts.gstatic.com and 7% (7 requests) were made to . The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Johnstonboiler.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 693.3 kB (45%)

Content Size

1.5 MB

After Optimization

844.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Johnstonboiler.com main page is 1.5 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. 70% of websites need less resources to load. Images take 576.2 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 64.9 kB

  • Original 82.0 kB
  • After minification 82.0 kB
  • After compression 17.1 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 64.9 kB or 79% of the original size.

Image Optimization

-3%

Potential reduce by 14.9 kB

  • Original 576.2 kB
  • After minification 561.3 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. Johnston Boiler images are well optimized though.

JavaScript Optimization

-61%

Potential reduce by 195.9 kB

  • Original 319.6 kB
  • After minification 297.2 kB
  • After compression 123.7 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 195.9 kB or 61% of the original size.

CSS Optimization

-75%

Potential reduce by 417.6 kB

  • Original 560.3 kB
  • After minification 558.7 kB
  • After compression 142.7 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. Johnstonboiler.com needs all CSS files to be minified and compressed as it can save up to 417.6 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 44 (66%)

Requests Now

67

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 67 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Johnston Boiler. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 30 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.johnstonboiler.com

www.johnstonboiler.com

1074 ms

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base.js

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GenerateIT

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Accessibility Review

johnstonboiler.com accessibility score

74

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

johnstonboiler.com best practices score

75

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

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

johnstonboiler.com SEO score

82

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

High

Tap targets are not sized appropriately

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 Johnstonboiler.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 Johnstonboiler.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

johnstonboiler.com

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