Tools & Wizards About Us
nd-semi.com screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 63

    Accessibility

    Visual factors better than
    that of 28% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

nd-semi.com

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Page Load Speed

49.7 sec in total

First Response

425 ms

Resources Loaded

41.1 sec

Page Rendered

8.2 sec

nd-semi.com screenshot

About Website

Click here to check amazing Nd Semi content. Otherwise, check out these important facts you probably never knew about nd-semi.com

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Visit nd-semi.com

Key Findings

We analyzed Nd-semi.com page load time and found that the first response time was 425 ms and then it took 49.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster. Unfortunately, there were 53 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

nd-semi.com performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

80/100

10%

LCP (Largest Contentful Paint)

Value96.0 s

0/100

25%

SI (Speed Index)

Value5.1 s

62/100

10%

TBT (Total Blocking Time)

Value1,180 ms

21/100

30%

CLS (Cumulative Layout Shift)

Value0.156

74/100

15%

TTI (Time to Interactive)

Value5.2 s

74/100

10%

Network Requests Diagram

www.nd-semi.com

425 ms

style.css

123 ms

tj.js

126 ms

sousuo.js

131 ms

pcdh.js

130 ms

Our browser made a total of 244 requests to load all elements on the main page. We found that 7% of them (16 requests) were addressed to the original Nd-semi.com, 21% (51 requests) were made to Img.jialiimg.com and 20% (50 requests) were made to Img.siwazywimg.com. The less responsive or slowest element that took the longest time to load (20.1 sec) relates to the external source Img.jialiimg.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 508.0 kB (9%)

Content Size

5.7 MB

After Optimization

5.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nd-semi.com main page is 5.7 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. 65% of websites need less resources to load. Images take 5.4 MB which makes up the majority of the site volume.

HTML Optimization

-77%

Potential reduce by 143.2 kB

  • Original 186.8 kB
  • After minification 157.9 kB
  • After compression 43.6 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 28.9 kB, which is 15% 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 143.2 kB or 77% of the original size.

Image Optimization

-7%

Potential reduce by 355.2 kB

  • Original 5.4 MB
  • After minification 5.1 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. Nd Semi images are well optimized though.

JavaScript Optimization

-17%

Potential reduce by 7.7 kB

  • Original 45.9 kB
  • After minification 45.8 kB
  • After compression 38.2 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 7.7 kB or 17% of the original size.

CSS Optimization

-23%

Potential reduce by 1.9 kB

  • Original 8.1 kB
  • After minification 8.1 kB
  • After compression 6.2 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. Nd-semi.com needs all CSS files to be minified and compressed as it can save up to 1.9 kB or 23% of the original size.

Requests Breakdown

Number of requests can be reduced by 9 (8%)

Requests Now

110

After Optimization

101

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 110 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nd Semi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.nd-semi.com

www.nd-semi.com

425 ms

style.css

style.css

123 ms

tj.js

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126 ms

sousuo.js

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131 ms

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130 ms

webdh.js

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129 ms

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143 ms

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Accessibility Review

nd-semi.com accessibility score

63

Accessibility Issues

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

<frame> or <iframe> elements do not have a title

High

Image elements do not have [alt] attributes

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

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.

Internationalization and localization

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

Impact

Issue

High

[lang] attributes do not have a valid value

Best Practices

nd-semi.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

SEO Factors

nd-semi.com SEO score

79

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

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

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

    N/A

  • Language Claimed

    VI

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Nd-semi.com can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is Vietnamese. Our system also found out that Nd-semi.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

nd-semi.com

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