Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

classoneair.com

Your Air Is Our Business • Filters & Testing | Class 1 Air in Milwaukee, WI

Page Load Speed

2.4 sec in total

First Response

124 ms

Resources Loaded

1.7 sec

Page Rendered

563 ms

classoneair.com screenshot

About Website

Visit classoneair.com now to see the best up-to-date Class One Air content and also check out these interesting facts you probably never knew about classoneair.com

When those under your care require the cleanest air. Class 1 Air is your source for air filtration products & critical environment compliance testing. We work with facilities, laboratories, and contro...

Visit classoneair.com

Key Findings

We analyzed Classoneair.com page load time and found that the first response time was 124 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 40% of websites can load faster.

Performance Metrics

classoneair.com performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value13.9 s

0/100

25%

SI (Speed Index)

Value8.5 s

18/100

10%

TBT (Total Blocking Time)

Value1,880 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.057

98/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

classoneair.com

124 ms

www.classoneair.com

147 ms

rs6.css

120 ms

815b9202032a5e6d8255637b53a3bc6c.min.css

251 ms

jquery.min.js

135 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 95% of them (110 requests) were addressed to the original Classoneair.com, 2% (2 requests) were made to Googletagmanager.com and 2% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (568 ms) belongs to the original domain Classoneair.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 120.6 kB (9%)

Content Size

1.3 MB

After Optimization

1.2 MB

In fact, the total size of Classoneair.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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Javascripts take 596.1 kB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 91.2 kB

  • Original 114.0 kB
  • After minification 112.2 kB
  • After compression 22.8 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 91.2 kB or 80% of the original size.

Image Optimization

-4%

Potential reduce by 14.6 kB

  • Original 366.4 kB
  • After minification 351.9 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. Class One Air images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 4.8 kB

  • Original 596.1 kB
  • After minification 596.1 kB
  • After compression 591.3 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.

CSS Optimization

-5%

Potential reduce by 10.0 kB

  • Original 197.3 kB
  • After minification 197.3 kB
  • After compression 187.3 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. Classoneair.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 90 (83%)

Requests Now

108

After Optimization

18

The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Class One Air. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 85 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

classoneair.com accessibility score

94

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

Links do not have a discernible name

Best Practices

classoneair.com best practices score

92

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

SEO Factors

classoneair.com SEO score

86

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

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

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 Classoneair.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 Classoneair.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

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