Report Summary

  • 15

    Performance

    Renders faster than
    34% of other websites

  • 78

    Accessibility

    Visual factors better than
    that of 55% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    47% of websites

  • 85

    SEO

    Google-friendlier than
    62% of websites

3m.com.cn

3M 科技 改善生活 | 3M 中国

Page Load Speed

5.8 sec in total

First Response

102 ms

Resources Loaded

5.5 sec

Page Rendered

123 ms

3m.com.cn screenshot

About Website

Visit 3m.com.cn now to see the best up-to-date 3M content for China and also check out these interesting facts you probably never knew about 3m.com.cn

3M 将科学和创新应用到现实生活中,通过激发全球生活和社区的进步和创新,产生真正的影响。

Visit 3m.com.cn

Key Findings

We analyzed 3m.com.cn page load time and found that the first response time was 102 ms and then it took 5.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

3m.com.cn performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.1 s

9/100

10%

LCP (Largest Contentful Paint)

Value18.5 s

0/100

25%

SI (Speed Index)

Value14.9 s

1/100

10%

TBT (Total Blocking Time)

Value1,530 ms

13/100

30%

CLS (Cumulative Layout Shift)

Value0.185

66/100

15%

TTI (Time to Interactive)

Value26.5 s

0/100

10%

Network Requests Diagram

3m.com.cn

102 ms

www.3m.com.cn

896 ms

Country

2942 ms

BlobServlet

92 ms

BlobServlet

109 ms

Our browser made a total of 69 requests to load all elements on the main page. We found that 3% of them (2 requests) were addressed to the original 3m.com.cn, 67% (46 requests) were made to Solutions.3m.com.cn and 7% (5 requests) were made to S.webtrends.com. The less responsive or slowest element that took the longest time to load (2.9 sec) relates to the external source Solutions.3m.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (58%)

Content Size

1.8 MB

After Optimization

764.1 kB

In fact, the total size of 3m.com.cn main page is 1.8 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. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 64.2 kB

  • Original 76.5 kB
  • After minification 64.1 kB
  • After compression 12.3 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 12.3 kB, which is 16% 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 64.2 kB or 84% of the original size.

Image Optimization

-14%

Potential reduce by 71.9 kB

  • Original 528.2 kB
  • After minification 456.3 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, 3M needs image optimization as it can save up to 71.9 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-74%

Potential reduce by 762.0 kB

  • Original 1.0 MB
  • After minification 947.4 kB
  • After compression 269.2 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 762.0 kB or 74% of the original size.

CSS Optimization

-84%

Potential reduce by 138.0 kB

  • Original 164.3 kB
  • After minification 160.8 kB
  • After compression 26.3 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. 3m.com.cn needs all CSS files to be minified and compressed as it can save up to 138.0 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 43 (67%)

Requests Now

64

After Optimization

21

The browser has sent 64 CSS, Javascripts, AJAX and image requests in order to completely render the main page of 3M. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

3m.com.cn accessibility score

78

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-*] attributes do not match their roles

High

ARIA IDs are not unique

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.

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

Best Practices

3m.com.cn best practices score

75

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

Page has valid source maps

SEO Factors

3m.com.cn 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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    ZH

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise 3m.com.cn can be misinterpreted by Google and other search engines. Our service has detected that Chinese is used on the page, and it matches the claimed language. Our system also found out that 3m.com.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 3M. 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: