Tools & Wizards About Us
ddb-tech.com screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

ddb-tech.com

Auto bearing, ball bearing manufacturer--China Ningbo Cie Industry and Trade Co.,Ltd.

Page Load Speed

2.4 sec in total

First Response

581 ms

Resources Loaded

1.6 sec

Page Rendered

249 ms

ddb-tech.com screenshot

About Website

Click here to check amazing Ddb Tech content. Otherwise, check out these important facts you probably never knew about ddb-tech.com

Ningbo Cie Industry and Trade Co.,Ltd. is China auto bearing manufacturer, ball bearing designer and sale. We exporter customize deep groove ball bearing, auto bearing and industry bearing to the whol...

Visit ddb-tech.com

Key Findings

We analyzed Ddb-tech.com page load time and found that the first response time was 581 ms and then it took 1.8 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

ddb-tech.com performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.3 s

98/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

98/100

25%

SI (Speed Index)

Value1.3 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.3 s

100/100

10%

Network Requests Diagram

ddb-tech.com

581 ms

css.css

130 ms

index_1.gif

130 ms

spacer.gif

153 ms

index_4.gif

154 ms

Our browser made a total of 48 requests to load all elements on the main page. We found that all of those requests were addressed to Ddb-tech.com and no external sources were called. The less responsive or slowest element that took the longest time to load (581 ms) belongs to the original domain Ddb-tech.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 97.8 kB (52%)

Content Size

188.1 kB

After Optimization

90.3 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Ddb-tech.com main page is 188.1 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. HTML takes 94.7 kB which makes up the majority of the site volume.

HTML Optimization

-91%

Potential reduce by 86.1 kB

  • Original 94.7 kB
  • After minification 68.9 kB
  • After compression 8.6 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 25.8 kB, which is 27% 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 86.1 kB or 91% of the original size.

Image Optimization

-0%

Potential reduce by 152 B

  • Original 80.7 kB
  • After minification 80.5 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. Ddb Tech images are well optimized though.

CSS Optimization

-91%

Potential reduce by 11.6 kB

  • Original 12.8 kB
  • After minification 10.6 kB
  • After compression 1.2 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. Ddb-tech.com needs all CSS files to be minified and compressed as it can save up to 11.6 kB or 91% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (43%)

Requests Now

46

After Optimization

26

  • Images
  • CSS

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

Network Requests Diagram

ddb-tech.com

ddb-tech.com

581 ms

css.css

css.css

130 ms

index_1.gif

index_1.gif

130 ms

spacer.gif

spacer.gif

153 ms

index_4.gif

index_4.gif

154 ms

che_3.gif

che_3.gif

155 ms

beijing.jpg

beijing.jpg

66 ms

index_2.gif

index_2.gif

65 ms

index_3.gif

index_3.gif

68 ms

c2.gif

c2.gif

128 ms

c3.gif

c3.gif

126 ms

c4.gif

c4.gif

123 ms

c5.gif

c5.gif

190 ms

c1.gif

c1.gif

192 ms

index_6.gif

index_6.gif

131 ms

index_7.gif

index_7.gif

169 ms

index_8.gif

index_8.gif

188 ms

index_9.gif

index_9.gif

191 ms

index_10.gif

index_10.gif

196 ms

index_11.gif

index_11.gif

233 ms

index_12.gif

index_12.gif

250 ms

index_13.gif

index_13.gif

252 ms

index_14.gif

index_14.gif

255 ms

index_15.gif

index_15.gif

255 ms

xiao.gif

xiao.gif

262 ms

xiao_1.gif

xiao_1.gif

297 ms

index_16.gif

index_16.gif

311 ms

index_17.gif

index_17.gif

314 ms

index_18.gif

index_18.gif

318 ms

index_19.gif

index_19.gif

319 ms

04.gif

04.gif

326 ms

1.jpg

1.jpg

362 ms

index_18-.gif

index_18-.gif

374 ms

index_20.gif

index_20.gif

376 ms

index_21.gif

index_21.gif

381 ms

che.gif

che.gif

509 ms

image001-s.jpg

image001-s.jpg

391 ms

image001.jpg

image001.jpg

424 ms

image003.jpg

image003.jpg

434 ms

image005.jpg

image005.jpg

437 ms

image006.jpg

image006.jpg

442 ms

image007.jpg

image007.jpg

417 ms

image009.jpg

image009.jpg

428 ms

index-.gif

index-.gif

437 ms

che_2.gif

che_2.gif

439 ms

2.jpg

2.jpg

390 ms

index_22.gif

index_22.gif

401 ms

index_23.gif

index_23.gif

431 ms

Accessibility Review

ddb-tech.com accessibility score

54

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.

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

ddb-tech.com best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

ddb-tech.com SEO score

67

Search Engine Optimization Advices

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ddb-tech.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 Ddb-tech.com main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

ddb-tech.com

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