Tools & Wizards About Us
nbdce.com screenshot

Report Summary

  • 37

    Performance

    Renders faster than
    56% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 91

    SEO

    Google-friendlier than
    70% of websites

nbdce.com

China Audio Isolation Transformers Manufacturers, Suppliers

Page Load Speed

6.6 sec in total

First Response

187 ms

Resources Loaded

5.8 sec

Page Rendered

627 ms

nbdce.com screenshot

About Website

Click here to check amazing Nbdce content. Otherwise, check out these important facts you probably never knew about nbdce.com

Zhejiang Dechuang Transformer Manufacturing Co., Ltd is China Isolation Transformers Manufacturers and Audio Transformers Suppliers, offer Audio Isolation Transformers online

Visit nbdce.com

Key Findings

We analyzed Nbdce.com page load time and found that the first response time was 187 ms and then it took 6.4 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

nbdce.com performance score

37

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.0 s

24/100

10%

LCP (Largest Contentful Paint)

Value8.8 s

1/100

25%

SI (Speed Index)

Value7.2 s

30/100

10%

TBT (Total Blocking Time)

Value260 ms

83/100

30%

CLS (Cumulative Layout Shift)

Value0.418

23/100

15%

TTI (Time to Interactive)

Value10.2 s

25/100

10%

Network Requests Diagram

nbdce.com

187 ms

www.nbdce.com

486 ms

styles.css

325 ms

wp-ulike.min.css

334 ms

prettyPhoto.css

338 ms

Our browser made a total of 84 requests to load all elements on the main page. We found that 98% of them (82 requests) were addressed to the original Nbdce.com, 1% (1 request) were made to Sdk.51.la and 1% (1 request) were made to Player.polyv.net. The less responsive or slowest element that took the longest time to load (2.6 sec) belongs to the original domain Nbdce.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 100.3 kB (3%)

Content Size

3.1 MB

After Optimization

3.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nbdce.com main page is 3.1 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. 55% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-90%

Potential reduce by 76.5 kB

  • Original 85.4 kB
  • After minification 64.3 kB
  • After compression 8.9 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 21.1 kB, which is 25% 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 76.5 kB or 90% of the original size.

Image Optimization

-0%

Potential reduce by 11.5 kB

  • Original 3.0 MB
  • After minification 3.0 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. Nbdce images are well optimized though.

JavaScript Optimization

-3%

Potential reduce by 17 B

  • Original 655 B
  • After minification 655 B
  • After compression 638 B

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

-24%

Potential reduce by 12.2 kB

  • Original 50.2 kB
  • After minification 50.2 kB
  • After compression 38.0 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. Nbdce.com needs all CSS files to be minified and compressed as it can save up to 12.2 kB or 24% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (36%)

Requests Now

76

After Optimization

49

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 76 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nbdce. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 18 to 1 for JavaScripts and from 11 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

nbdce.com

nbdce.com

187 ms

www.nbdce.com

www.nbdce.com

486 ms

styles.css

styles.css

325 ms

wp-ulike.min.css

wp-ulike.min.css

334 ms

prettyPhoto.css

prettyPhoto.css

338 ms

lightbox.min.css

lightbox.min.css

334 ms

jquery.js

jquery.js

395 ms

jquery-migrate.min.js

jquery-migrate.min.js

372 ms

basic.css

basic.css

668 ms

font-awesome.min.css

font-awesome.min.css

688 ms

main.css

main.css

678 ms

animate.min.css

animate.min.css

660 ms

swiper.min.css

swiper.min.css

696 ms

main.js

main.js

723 ms

jquery.js

jquery.js

1040 ms

wow.min.js

wow.min.js

1014 ms

1013_361_.js

1013_361_.js

1019 ms

swiper.min.js

swiper.min.js

1034 ms

js-sdk-pro.min.js

js-sdk-pro.min.js

1127 ms

index_js.js

index_js.js

1038 ms

polyvplayer.min.js

polyvplayer.min.js

419 ms

flexslider.css

flexslider.css

1050 ms

public.css

public.css

1337 ms

email-decode.min.js

email-decode.min.js

1020 ms

scripts.js

scripts.js

1347 ms

wp-ulike.min.js

wp-ulike.min.js

1355 ms

jquery.prettyPhoto.js

jquery.prettyPhoto.js

1363 ms

jquery.touchwipe.min.js

jquery.touchwipe.min.js

1365 ms

jquery.lightbox.min.js

jquery.lightbox.min.js

1381 ms

wp-embed.min.js

wp-embed.min.js

1665 ms

jquery.flexslider.min.js

jquery.flexslider.min.js

1669 ms

jQuery.easing.min.js

jQuery.easing.min.js

1683 ms

logo.jpg

logo.jpg

545 ms

phone.png

phone.png

550 ms

tel.png

tel.png

564 ms

contact-bg.png

contact-bg.png

856 ms

banner.jpg

banner.jpg

1079 ms

banner1-1-2.jpg

banner1-1-2.jpg

1097 ms

tit.png

tit.png

868 ms

w1.png

w1.png

876 ms

w2.png

w2.png

909 ms

w3.png

w3.png

1197 ms

w4.png

w4.png

1210 ms

why1.jpg

why1.jpg

1220 ms

why2.jpg

why2.jpg

1244 ms

why3.jpg

why3.jpg

1479 ms

why4.jpg

why4.jpg

1472 ms

why5.jpg

why5.jpg

1576 ms

why6.jpg

why6.jpg

1586 ms

why7.jpg

why7.jpg

1593 ms

why8.jpg

why8.jpg

1632 ms

S7A7250-1-1.png

S7A7250-1-1.png

1965 ms

S7A7247-1.png

S7A7247-1.png

1957 ms

S7A7251-2-1.png

S7A7251-2-1.png

2011 ms

S7A7252-1.png

S7A7252-1.png

1991 ms

S7A7253-1.png

S7A7253-1.png

2033 ms

S7A7255-1.png

S7A7255-1.png

2074 ms

S7A7257-1.png

S7A7257-1.png

2372 ms

S7A7258-1.png

S7A7258-1.png

2424 ms

raleway-regular.ttf

raleway-regular.ttf

2287 ms

oswald-light.ttf

oswald-light.ttf

2244 ms

raleway-medium.ttf

raleway-medium.ttf

2311 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

2284 ms

raleway-bold.ttf

raleway-bold.ttf

2583 ms

oswald-regular.ttf

oswald-regular.ttf

2576 ms

EI-transformer-01.png

EI-transformer-01.png

2363 ms

EI-transformer-02.png

EI-transformer-02.png

2393 ms

EI-transformer-03.png

EI-transformer-03.png

2404 ms

EI-transformer-04.png

EI-transformer-04.png

2422 ms

video.png

video.png

2579 ms

logo1.jpg

logo1.jpg

2574 ms

qr.png

qr.png

2357 ms

why-bg.jpg

why-bg.jpg

2444 ms

left_03.jpg

left_03.jpg

2404 ms

right_05.jpg

right_05.jpg

2385 ms

video-bg.jpg

video-bg.jpg

2580 ms

contact-bg.jpg

contact-bg.jpg

2228 ms

btn_10.jpg

btn_10.jpg

2344 ms

tel1.png

tel1.png

2402 ms

fax.png

fax.png

2410 ms

mail.png

mail.png

2413 ms

add.png

add.png

2185 ms

ajax-loader.gif

ajax-loader.gif

1936 ms

bg_direction_nav.png

bg_direction_nav.png

1980 ms

Accessibility Review

nbdce.com accessibility score

75

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

[aria-hidden="true"] elements contain focusable descendents

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

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

Links do not have a discernible name

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

nbdce.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

nbdce.com SEO score

91

Search Engine Optimization Advices

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nbdce.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Nbdce.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

nbdce.com

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