Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 71

    Accessibility

    Visual factors better than
    that of 37% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 82

    SEO

    Google-friendlier than
    44% of websites

ntlk.cn

南通力科机床制造有限公司

Page Load Speed

50.8 sec in total

First Response

2.6 sec

Resources Loaded

48.1 sec

Page Rendered

194 ms

ntlk.cn screenshot

About Website

Welcome to ntlk.cn homepage info - get ready to check Ntlk best content right away, or after learning these important things about ntlk.cn

知名数控铣床·加工中心厂家:力科机床专业生产数控铣床,立式加工中心,龙门加工中心,CNC数控加工中心,13809088901

Visit ntlk.cn

Key Findings

We analyzed Ntlk.cn page load time and found that the first response time was 2.6 sec and then it took 48.3 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster. Unfortunately, there were 30 request timeouts, which can generally increase the web page load time, as the browser stays idle while waiting for website response.

Performance Metrics

ntlk.cn performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.1 s

46/100

10%

LCP (Largest Contentful Paint)

Value13.5 s

0/100

25%

SI (Speed Index)

Value16.6 s

0/100

10%

TBT (Total Blocking Time)

Value660 ms

45/100

30%

CLS (Cumulative Layout Shift)

Value0.126

83/100

15%

TTI (Time to Interactive)

Value17.3 s

4/100

10%

Network Requests Diagram

index.html

2566 ms

public.css

4195 ms

sub.css

14441 ms

jquery.js

20378 ms

poplayer.js

11061 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 52% of them (46 requests) were addressed to the original Ntlk.cn, 13% (12 requests) were made to Qiao.baidu.com and 9% (8 requests) were made to Lxbjs.baidu.com. The less responsive or slowest element that took the longest time to load (20.5 sec) belongs to the original domain Ntlk.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 123.8 kB (48%)

Content Size

259.3 kB

After Optimization

135.5 kB

In fact, the total size of Ntlk.cn main page is 259.3 kB. 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. Javascripts take 88.7 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 33.0 kB

  • Original 45.2 kB
  • After minification 41.0 kB
  • After compression 12.2 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 33.0 kB or 73% of the original size.

Image Optimization

-39%

Potential reduce by 30.2 kB

  • Original 77.7 kB
  • After minification 47.4 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. Obviously, Ntlk needs image optimization as it can save up to 30.2 kB or 39% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-24%

Potential reduce by 21.2 kB

  • Original 88.7 kB
  • After minification 85.9 kB
  • After compression 67.5 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 21.2 kB or 24% of the original size.

CSS Optimization

-83%

Potential reduce by 39.4 kB

  • Original 47.8 kB
  • After minification 34.9 kB
  • After compression 8.3 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. Ntlk.cn needs all CSS files to be minified and compressed as it can save up to 39.4 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 34 (60%)

Requests Now

57

After Optimization

23

The browser has sent 57 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Ntlk. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Accessibility Review

ntlk.cn accessibility score

71

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Definition list items are not wrapped in <dl> elements

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

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

ntlk.cn 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

Missing source maps for large first-party JavaScript

SEO Factors

ntlk.cn SEO score

82

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ntlk.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese 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 Ntlk.cn 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 Ntlk. 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: