Tools & Wizards About Us
realsd.com.cn screenshot

Report Summary

  • 68

    Performance

    Renders faster than
    80% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

realsd.com.cn

拾音器-北京睿声智诚科技有限责任公司

Page Load Speed

11.1 sec in total

First Response

1.6 sec

Resources Loaded

9.3 sec

Page Rendered

130 ms

realsd.com.cn screenshot

About Website

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

北京睿声智诚科技有限责任公司-专业拾音器生产厂家

Visit realsd.com.cn

Key Findings

We analyzed Realsd.com.cn page load time and found that the first response time was 1.6 sec and then it took 9.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

realsd.com.cn performance score

68

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.6 s

94/100

10%

LCP (Largest Contentful Paint)

Value5.8 s

16/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value40 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value3.6 s

91/100

10%

Network Requests Diagram

realsd.com.cn

1641 ms

jquery-1.3.1.js

2846 ms

style.css

1041 ms

slideshow.js

4147 ms

header-bg.jpg

264 ms

Our browser made a total of 21 requests to load all elements on the main page. We found that all of those requests were addressed to Realsd.com.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (5.6 sec) belongs to the original domain Realsd.com.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 685.6 kB (59%)

Content Size

1.2 MB

After Optimization

477.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Realsd.com.cn main page is 1.2 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. 15% of websites need less resources to load. Images take 787.3 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 8.5 kB

  • Original 10.8 kB
  • After minification 8.8 kB
  • After compression 2.4 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 2.0 kB, which is 18% 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 8.5 kB or 78% of the original size.

Image Optimization

-48%

Potential reduce by 376.2 kB

  • Original 787.3 kB
  • After minification 411.2 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, Realsd needs image optimization as it can save up to 376.2 kB or 48% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-83%

Potential reduce by 291.0 kB

  • Original 351.9 kB
  • After minification 205.5 kB
  • After compression 60.9 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 291.0 kB or 83% of the original size.

CSS Optimization

-77%

Potential reduce by 10.0 kB

  • Original 13.0 kB
  • After minification 11.3 kB
  • After compression 3.0 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. Realsd.com.cn needs all CSS files to be minified and compressed as it can save up to 10.0 kB or 77% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

19

After Optimization

19

  • Images
  • JavaScript
  • CSS

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Realsd. According to our analytics all requests are already optimized.

Network Requests Diagram

realsd.com.cn

realsd.com.cn

1641 ms

jquery-1.3.1.js

jquery-1.3.1.js

2846 ms

style.css

style.css

1041 ms

slideshow.js

slideshow.js

4147 ms

header-bg.jpg

header-bg.jpg

264 ms

menu-bg.png

menu-bg.png

269 ms

logo.png

logo.png

266 ms

tel.jpg

tel.jpg

502 ms

nav-line.jpg

nav-line.jpg

523 ms

0711470527mu.jpg

0711470527mu.jpg

2374 ms

07114635iqkd.jpg

07114635iqkd.jpg

1599 ms

07114608umxx.jpg

07114608umxx.jpg

5554 ms

0711451115rc.jpg

0711451115rc.jpg

4692 ms

prev.png

prev.png

779 ms

next.png

next.png

1043 ms

chan.png

chan.png

3157 ms

chan2.png

chan2.png

3276 ms

chan3.png

chan3.png

3758 ms

content-bg.jpg

content-bg.jpg

1067 ms

footer-bg.jpg

footer-bg.jpg

1330 ms

ajax-loader.gif

ajax-loader.gif

1594 ms

Accessibility Review

realsd.com.cn accessibility score

69

Accessibility Issues

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

realsd.com.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

SEO Factors

realsd.com.cn SEO score

75

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 Realsd.com.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 Realsd.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

realsd.com.cn

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