Tools & Wizards About Us

Report Summary

  • 62

    Performance

    Renders faster than
    76% of other websites

  • 59

    Accessibility

    Visual factors better than
    that of 26% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 85

    SEO

    Google-friendlier than
    55% of websites

nacolube.com

上海纳克润滑技术有限公司 - 开启全合成时代|纳克金极能|卡伯特|

Page Load Speed

24.7 sec in total

First Response

8.1 sec

Resources Loaded

16.3 sec

Page Rendered

329 ms

About Website

Visit nacolube.com now to see the best up-to-date Nacolube content for China and also check out these interesting facts you probably never knew about nacolube.com

上海纳克润滑技术有限公司创立于 2003 年，是全球领先的合成基础油制造商。2014 年在国家级化学产业园 ——上海化学工业区建设占地 100 亩的 2.5 万吨级规模化合成基础油 PAO 生产装置，已经竣工投入使用。目前产品已经出口北美、日本、欧洲、东南亚等地区，成为合成基础油供应领域的世界新选择。

Visit nacolube.com

Key Findings

We analyzed Nacolube.com page load time and found that the first response time was 8.1 sec and then it took 16.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

nacolube.com performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

49/100

10%

LCP (Largest Contentful Paint)

Value6.5 s

9/100

25%

SI (Speed Index)

Value8.7 s

16/100

10%

TBT (Total Blocking Time)

Value30 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value4.8 s

79/100

10%

Network Requests Diagram

nacolube.com

8119 ms

bootstrap.min.css

5003 ms

templatemo_misc.css

2444 ms

easy-responsive-tabs.css

1827 ms

style.css

3065 ms

Our browser made a total of 47 requests to load all elements on the main page. We found that 96% of them (45 requests) were addressed to the original Nacolube.com, 4% (2 requests) were made to Hm.baidu.com. The less responsive or slowest element that took the longest time to load (8.1 sec) belongs to the original domain Nacolube.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 320.4 kB (37%)

Content Size

866.8 kB

After Optimization

546.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Nacolube.com main page is 866.8 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. 25% of websites need less resources to load. Images take 551.8 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 179.0 kB

  • Original 203.9 kB
  • After minification 165.3 kB
  • After compression 24.9 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 38.6 kB, which is 19% 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 179.0 kB or 88% of the original size.

Image Optimization

-8%

Potential reduce by 45.2 kB

  • Original 551.8 kB
  • After minification 506.6 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. Nacolube images are well optimized though.

JavaScript Optimization

-87%

Potential reduce by 49.9 kB

  • Original 57.2 kB
  • After minification 27.2 kB
  • After compression 7.3 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 49.9 kB or 87% of the original size.

CSS Optimization

-86%

Potential reduce by 46.3 kB

  • Original 53.9 kB
  • After minification 35.8 kB
  • After compression 7.6 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. Nacolube.com needs all CSS files to be minified and compressed as it can save up to 46.3 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 11 (24%)

Requests Now

46

After Optimization

35

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 46 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Nacolube. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

nacolube.com accessibility score

59

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

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

nacolube.com best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

nacolube.com SEO score

85

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

    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 Nacolube.com 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 Nacolube.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

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