Tools & Wizards About Us
norson-audio.com screenshot

Report Summary

  • 63

    Performance

    Renders faster than
    77% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 50

    Best Practices

    More advanced features
    available than in
    19% of websites

  • 62

    SEO

    Google-friendlier than
    23% of websites

norson-audio.com

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Page Load Speed

6.1 sec in total

First Response

49 ms

Resources Loaded

5.8 sec

Page Rendered

276 ms

norson-audio.com screenshot

About Website

Welcome to norson-audio.com homepage info - get ready to check Norson Audio best content right away, or after learning these important things about norson-audio.com

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Visit norson-audio.com

Key Findings

We analyzed Norson-audio.com page load time and found that the first response time was 49 ms and then it took 6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

norson-audio.com performance score

63

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

30/100

10%

LCP (Largest Contentful Paint)

Value3.7 s

58/100

25%

SI (Speed Index)

Value5.9 s

48/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.348

32/100

15%

TTI (Time to Interactive)

Value6.1 s

63/100

10%

Network Requests Diagram

norson-audio.com

49 ms

norson-audio.com

147 ms

z15sbq.xyz

1068 ms

main.html

209 ms

style.min.css

205 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 7% of them (2 requests) were addressed to the original Norson-audio.com, 82% (23 requests) were made to Z15sbq.xyz and 4% (1 request) were made to S9.cnzz.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Z12.cnzz.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 190.0 kB (15%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Norson-audio.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. 20% of websites need less resources to load. Images take 1.1 MB which makes up the majority of the site volume.

HTML Optimization

-62%

Potential reduce by 1.0 kB

  • Original 1.6 kB
  • After minification 1.1 kB
  • After compression 619 B

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 526 B, which is 32% 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 1.0 kB or 62% of the original size.

Image Optimization

-8%

Potential reduce by 90.1 kB

  • Original 1.1 MB
  • After minification 973.5 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. Norson Audio images are well optimized though.

JavaScript Optimization

-20%

Potential reduce by 25.5 kB

  • Original 130.0 kB
  • After minification 129.5 kB
  • After compression 104.5 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 25.5 kB or 20% of the original size.

CSS Optimization

-88%

Potential reduce by 73.4 kB

  • Original 83.1 kB
  • After minification 62.2 kB
  • After compression 9.7 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. Norson-audio.com needs all CSS files to be minified and compressed as it can save up to 73.4 kB or 88% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (32%)

Requests Now

25

After Optimization

17

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 25 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Norson 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 9 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

norson-audio.com

norson-audio.com

49 ms

norson-audio.com

norson-audio.com

147 ms

z15sbq.xyz

z15sbq.xyz

1068 ms

main.html

main.html

209 ms

style.min.css

style.min.css

205 ms

swiper.css

swiper.css

408 ms

animate.min.css

animate.min.css

592 ms

rem.js

rem.js

599 ms

link.js

link.js

600 ms

chatra.js

chatra.js

604 ms

config.js

config.js

611 ms

js.js

js.js

612 ms

poplayer.js

poplayer.js

789 ms

jquery.js

jquery.js

1396 ms

img-top.png

img-top.png

612 ms

yl.jpg

yl.jpg

820 ms

wxjdptsq.jpg

wxjdptsq.jpg

987 ms

btn-jy.png

btn-jy.png

213 ms

btn-leyu.png

btn-leyu.png

625 ms

btn-ky.png

btn-ky.png

614 ms

huodong.png

huodong.png

813 ms

games.png

games.png

1428 ms

gs.png

gs.png

820 ms

img-di@2x.png

img-di@2x.png

830 ms

xinfenlianxiren.png

xinfenlianxiren.png

1013 ms

z.js

z.js

1362 ms

stat.htm

stat.htm

1506 ms

c.js

c.js

897 ms

Accessibility Review

norson-audio.com accessibility score

69

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

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

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

Best Practices

norson-audio.com best practices score

50

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

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

norson-audio.com SEO score

62

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Norson-audio.com can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it does not match the claimed English language. Our system also found out that Norson-audio.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

norson-audio.com

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