Tools & Wizards About Us

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 49

    Accessibility

    Visual factors better than
    that of 20% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 58

    SEO

    Google-friendlier than
    21% of websites

dlsonic.cn

超声波流量计|超声波流量计生产专家0411-87301887-大连索尼卡超声波流量计-大连索尼卡_大连索尼卡

Page Load Speed

4.4 sec in total

First Response

855 ms

Resources Loaded

3.4 sec

Page Rendered

136 ms

About Website

Visit dlsonic.cn now to see the best up-to-date Dlsonic content and also check out these interesting facts you probably never knew about dlsonic.cn

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Visit dlsonic.cn

Key Findings

We analyzed Dlsonic.cn page load time and found that the first response time was 855 ms and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

dlsonic.cn performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.1 s

100/100

25%

SI (Speed Index)

Value2.5 s

98/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value1.1 s

100/100

10%

Network Requests Diagram

dlsonic.cn

855 ms

style.css

421 ms

dlsonic.jpg

1042 ms

sm.gif

446 ms

CA131528506.jpg

1050 ms

Our browser made a total of 13 requests to load all elements on the main page. We found that all of those requests were addressed to Dlsonic.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (2.3 sec) belongs to the original domain Dlsonic.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 17.2 kB (6%)

Content Size

267.3 kB

After Optimization

250.2 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Dlsonic.cn main page is 267.3 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. Only 10% of websites need less resources to load. Images take 255.3 kB which makes up the majority of the site volume.

HTML Optimization

-69%

Potential reduce by 6.9 kB

  • Original 10.1 kB
  • After minification 9.8 kB
  • After compression 3.2 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 6.9 kB or 69% of the original size.

Image Optimization

-4%

Potential reduce by 9.6 kB

  • Original 255.3 kB
  • After minification 245.8 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. Dlsonic images are well optimized though.

CSS Optimization

-35%

Potential reduce by 653 B

  • Original 1.9 kB
  • After minification 1.9 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. Dlsonic.cn needs all CSS files to be minified and compressed as it can save up to 653 B or 35% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

12

After Optimization

12

  • Images
  • CSS

The browser has sent 12 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dlsonic. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

dlsonic.cn accessibility score

49

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

High

<object> elements do not have alternate text

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>).

Best Practices

dlsonic.cn 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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

SEO Factors

dlsonic.cn SEO score

58

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

High

Document uses plugins

Language and Encoding

  • Language Detected

    ZH

  • Language Claimed

    N/A

  • Encoding

    GB2312

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dlsonic.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 Dlsonic.cn main page’s claimed encoding is gb2312. 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

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