Tools & Wizards About Us

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 66

    SEO

    Google-friendlier than
    25% of websites

ozone.ca

Crystal Air Ozone Generators For Air And Water Treatment | Crystal Air Products & Services

Page Load Speed

2.7 sec in total

First Response

29 ms

Resources Loaded

2.3 sec

Page Rendered

361 ms

About Website

Click here to check amazing Ozone content. Otherwise, check out these important facts you probably never knew about ozone.ca

Leading The Industry In Innovation and Quality Our Ozone Generators And C20 Deodorizer Are Second To None And Are Widely Used For The Easy Elimination of Pet & Skunk Odors, Smoke, Mold, Fungus, Fire, ...

Visit ozone.ca

Key Findings

We analyzed Ozone.ca page load time and found that the first response time was 29 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

ozone.ca performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.5 s

33/100

10%

LCP (Largest Contentful Paint)

Value16.5 s

0/100

25%

SI (Speed Index)

Value4.5 s

72/100

10%

TBT (Total Blocking Time)

Value450 ms

63/100

30%

CLS (Cumulative Layout Shift)

Value1.264

1/100

15%

TTI (Time to Interactive)

Value7.6 s

47/100

10%

Network Requests Diagram

ozone.ca

29 ms

ozone.ca

260 ms

www.ozone.ca

22 ms

www.ozone.ca

394 ms

main-responsive.css

43 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 79% of them (63 requests) were addressed to the original Ozone.ca, 5% (4 requests) were made to Use.fontawesome.com and 4% (3 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (810 ms) belongs to the original domain Ozone.ca.

Page Optimization Overview & Recommendations

Page size can be reduced by 898.6 kB (23%)

Content Size

3.8 MB

After Optimization

2.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Ozone.ca main page is 3.8 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. 65% of websites need less resources to load. Images take 2.8 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 335.5 kB

  • Original 437.5 kB
  • After minification 428.8 kB
  • After compression 102.0 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 335.5 kB or 77% of the original size.

Image Optimization

-5%

Potential reduce by 130.8 kB

  • Original 2.8 MB
  • After minification 2.7 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. Ozone images are well optimized though.

JavaScript Optimization

-66%

Potential reduce by 227.1 kB

  • Original 344.0 kB
  • After minification 338.5 kB
  • After compression 116.9 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 227.1 kB or 66% of the original size.

CSS Optimization

-83%

Potential reduce by 205.2 kB

  • Original 248.0 kB
  • After minification 192.9 kB
  • After compression 42.8 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. Ozone.ca needs all CSS files to be minified and compressed as it can save up to 205.2 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 39 (56%)

Requests Now

70

After Optimization

31

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 70 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ozone. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

ozone.ca accessibility score

88

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

ozone.ca best practices score

67

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

Browser errors were logged to the console

SEO Factors

ozone.ca SEO score

66

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

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 Ozone.ca 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 Ozone.ca 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

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