Tools & Wizards About Us
deffaudio.com screenshot

Report Summary

  • 44

    Performance

    Renders faster than
    63% 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

  • 100

    SEO

    Google-friendlier than
    94% of websites

deffaudio.com

Deff Audio.com Car Amplfiiers Subwoofers Stereos and much much more

Page Load Speed

2.5 sec in total

First Response

235 ms

Resources Loaded

1.6 sec

Page Rendered

682 ms

deffaudio.com screenshot

About Website

Click here to check amazing Deff Audio content for United States. Otherwise, check out these important facts you probably never knew about deffaudio.com

Deff Audio carries all of your car audio needs Amplifiers Sub woofers Boxes Car Stereos Capacitors Wiring kits and much much more even home stereo electronics at the lowest prices we can while still e...

Visit deffaudio.com

Key Findings

We analyzed Deffaudio.com page load time and found that the first response time was 235 ms and then it took 2.3 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

deffaudio.com performance score

44

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value5.4 s

21/100

25%

SI (Speed Index)

Value4.4 s

75/100

10%

TBT (Total Blocking Time)

Value1,020 ms

26/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value15.2 s

7/100

10%

Network Requests Diagram

deffaudio.com

235 ms

constants.js

30 ms

pubsub.js

48 ms

global.js

33 ms

animations.js

34 ms

Our browser made a total of 61 requests to load all elements on the main page. We found that 90% of them (55 requests) were addressed to the original Deffaudio.com, 3% (2 requests) were made to Cdn.shopify.com and 2% (1 request) were made to Apps.holest.com. The less responsive or slowest element that took the longest time to load (726 ms) belongs to the original domain Deffaudio.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 240.6 kB (23%)

Content Size

1.0 MB

After Optimization

786.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Deffaudio.com main page is 1.0 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. 50% of websites need less resources to load. Images take 479.7 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 226.4 kB

  • Original 264.4 kB
  • After minification 236.0 kB
  • After compression 37.9 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 28.4 kB, which is 11% 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 226.4 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 479.7 kB
  • After minification 479.7 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. Deff Audio images are well optimized though.

JavaScript Optimization

-5%

Potential reduce by 12.6 kB

  • Original 252.6 kB
  • After minification 252.6 kB
  • After compression 240.0 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 1.6 kB

  • Original 30.3 kB
  • After minification 30.3 kB
  • After compression 28.7 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. Deffaudio.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 42 (70%)

Requests Now

60

After Optimization

18

  • Images
  • JavaScript
  • CSS

The browser has sent 60 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Deff Audio. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

deffaudio.com

deffaudio.com

235 ms

constants.js

constants.js

30 ms

pubsub.js

pubsub.js

48 ms

global.js

global.js

33 ms

animations.js

animations.js

34 ms

preloads.js

preloads.js

41 ms

load_feature-9f951eb7d8d53973c719de211f807d63af81c644e5b9a6ae72661ac408d472f6.js

load_feature-9f951eb7d8d53973c719de211f807d63af81c644e5b9a6ae72661ac408d472f6.js

36 ms

storefront-80e528be853eac23af2454534897ca9536b1d3d04aa043b042f34879a3c111c8.js

storefront-80e528be853eac23af2454534897ca9536b1d3d04aa043b042f34879a3c111c8.js

50 ms

features-1c0b396bd4d054b94abae1eb6a1bd6ba47beb35525c57a217c77a862ff06d83f.js

features-1c0b396bd4d054b94abae1eb6a1bd6ba47beb35525c57a217c77a862ff06d83f.js

49 ms

scripts.js

scripts.js

49 ms

base.css

base.css

62 ms

component-localization-form.css

component-localization-form.css

75 ms

localization-form.js

localization-form.js

95 ms

mf.php

mf.php

574 ms

qda-cart-styles.min.css

qda-cart-styles.min.css

40 ms

shopify-perf-kit-unstable.min.js

shopify-perf-kit-unstable.min.js

61 ms

component-slideshow.css

component-slideshow.css

63 ms

component-slider.css

component-slider.css

65 ms

component-list-social.css

component-list-social.css

91 ms

details-disclosure.js

details-disclosure.js

91 ms

details-modal.js

details-modal.js

90 ms

cart-notification.js

cart-notification.js

88 ms

search-form.js

search-form.js

87 ms

section-collection-list.css

section-collection-list.css

94 ms

component-card.css

component-card.css

90 ms

section-footer.css

section-footer.css

94 ms

component-newsletter.css

component-newsletter.css

98 ms

component-list-menu.css

component-list-menu.css

100 ms

component-list-payment.css

component-list-payment.css

103 ms

client.login-button_CHtr0mHz.en.esm.js

client.login-button_CHtr0mHz.en.esm.js

140 ms

chunk.common_CdCh5Mft.esm.js

chunk.common_CdCh5Mft.esm.js

143 ms

predictive-search.js

predictive-search.js

139 ms

front.min.js

front.min.js

52 ms

trekkie.storefront.a1ad2ab43a5932ff96084a0e2e69f51ba73ddbec.min.js

trekkie.storefront.a1ad2ab43a5932ff96084a0e2e69f51ba73ddbec.min.js

77 ms

shop_events_listener-61fa9e0a912c675e178777d2b27f6cbd482f8912a6b0aa31fa3515985a8cd626.js

shop_events_listener-61fa9e0a912c675e178777d2b27f6cbd482f8912a6b0aa31fa3515985a8cd626.js

78 ms

shopify-boomerang-1.0.0.min.js

shopify-boomerang-1.0.0.min.js

75 ms

logo-2013-small.png

logo-2013-small.png

87 ms

Clearance20-20Mirror20Hang20Tag207501-Y_700.png

Clearance20-20Mirror20Hang20Tag207501-Y_700.png

450 ms

tview_tint_2_5.png

tview_tint_2_5.png

354 ms

hc1400blu-500x500.png

hc1400blu-500x500.png

359 ms

apcl-10001d-500x500.jpg

apcl-10001d-500x500.jpg

247 ms

EV0536__57750.1406267936.480.400.jpg

EV0536__57750.1406267936.480.400.jpg

223 ms

jb5684_3.jpg

jb5684_3.jpg

135 ms

648bi-500x500.jpg

648bi-500x500.jpg

358 ms

PLHB10-500x500.jpg

PLHB10-500x500.jpg

429 ms

PLD15WD-500x500.jpg

PLD15WD-500x500.jpg

464 ms

PLDNV78I-500x500.jpg

PLDNV78I-500x500.jpg

604 ms

nobleiif-500x500.jpg

nobleiif-500x500.jpg

556 ms

bds6305_1.jpg

bds6305_1.jpg

614 ms

PLMRW65-500x500.jpg

PLMRW65-500x500.jpg

603 ms

ATV85B-500x500.jpg

ATV85B-500x500.jpg

651 ms

PIDOCK1.jpg

PIDOCK1.jpg

726 ms

component-predictive-search.css

component-predictive-search.css

21 ms

component-search.css

component-search.css

24 ms

component-menu-drawer.css

component-menu-drawer.css

22 ms

component-cart-notification.css

component-cart-notification.css

24 ms

component-cart-items.css

component-cart-items.css

26 ms

component-price.css

component-price.css

24 ms

tracking_script

tracking_script

289 ms

script.js

script.js

84 ms

swym-shopify.js

swym-shopify.js

57 ms

Accessibility Review

deffaudio.com 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.

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

ARIA IDs are not unique

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

deffaudio.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

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

High

Page has valid source maps

SEO Factors

deffaudio.com SEO score

100

Search Engine Optimization Advices

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 Deffaudio.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 Deffaudio.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

deffaudio.com

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