Tools & Wizards About Us

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 56% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

airfilter.com

Washable Air Filters, Cabin Filters, Cold Air Kits & Oil Filters | K&N

Page Load Speed

18.1 sec in total

First Response

149 ms

Resources Loaded

2.7 sec

Page Rendered

15.3 sec

About Website

Click here to check amazing Air Filter content. Otherwise, check out these important facts you probably never knew about airfilter.com

Shop replacement K&N air filters, cold air intakes, oil filters, cabin filters, home air filters, and other high performance parts. Factory direct from the official K&N website.

Visit airfilter.com

Key Findings

We analyzed Airfilter.com page load time and found that the first response time was 149 ms and then it took 17.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

airfilter.com performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value66.8 s

0/100

25%

SI (Speed Index)

Value15.5 s

0/100

10%

TBT (Total Blocking Time)

Value3,710 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.201

61/100

15%

TTI (Time to Interactive)

Value31.2 s

0/100

10%

Network Requests Diagram

www.knfilters.com

149 ms

calendar.css

69 ms

styles-m.css

71 ms

afterpay-express-checkout.css

69 ms

main.css

119 ms

Our browser made a total of 219 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Airfilter.com, 24% (53 requests) were made to Res.cloudinary.com and 2% (5 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Polyfill-fastly.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 825.8 kB (5%)

Content Size

17.4 MB

After Optimization

16.6 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Airfilter.com main page is 17.4 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. Only a small number of websites need less resources to load. Images take 16.3 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 269.4 kB

  • Original 320.5 kB
  • After minification 276.5 kB
  • After compression 51.1 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. This page needs HTML code to be minified as it can gain 44.0 kB, which is 14% 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 269.4 kB or 84% of the original size.

Image Optimization

-1%

Potential reduce by 109.8 kB

  • Original 16.3 MB
  • After minification 16.2 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. Air Filter images are well optimized though.

JavaScript Optimization

-49%

Potential reduce by 323.1 kB

  • Original 653.8 kB
  • After minification 653.8 kB
  • After compression 330.8 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 323.1 kB or 49% of the original size.

CSS Optimization

-79%

Potential reduce by 123.5 kB

  • Original 157.1 kB
  • After minification 34.4 kB
  • After compression 33.6 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. Airfilter.com needs all CSS files to be minified and compressed as it can save up to 123.5 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 141 (69%)

Requests Now

203

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 203 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Air Filter. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 135 to 1 for JavaScripts and from 8 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

airfilter.com accessibility score

84

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Elements with an ARIA [role] that require children to contain a specific [role] are missing some or all of those required children.

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

[id] attributes on active, focusable elements are not unique

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

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>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

airfilter.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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

airfilter.com SEO score

83

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

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 Airfilter.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 Airfilter.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 description is not detected on the main page of Air Filter. 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: