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yihua17.com screenshot

Report Summary

  • 67

    Performance

    Renders faster than
    79% of other websites

  • 69

    Accessibility

    Visual factors better than
    that of 34% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

yihua17.com

振动台-振动实验台-振动试验机-上海一华仪器

Page Load Speed

8.9 sec in total

First Response

203 ms

Resources Loaded

8.3 sec

Page Rendered

345 ms

yihua17.com screenshot

About Website

Welcome to yihua17.com homepage info - get ready to check Yihua 17 best content right away, or after learning these important things about yihua17.com

上海一华仪器设备有限公司经过近20年的发展与积累，现已成为一家专业的可靠性环境、振动试验仪器生产商；是集科研与生产于一身的科研生产型高低温试验机，振动试验台等设备的企业。

Visit yihua17.com

Key Findings

We analyzed Yihua17.com page load time and found that the first response time was 203 ms and then it took 8.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

yihua17.com performance score

67

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

99/100

10%

LCP (Largest Contentful Paint)

Value3.5 s

64/100

25%

SI (Speed Index)

Value7.8 s

24/100

10%

TBT (Total Blocking Time)

Value410 ms

66/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value8.2 s

40/100

10%

Network Requests Diagram

index.html

203 ms

base.css

197 ms

common.css

413 ms

logo.png

1386 ms

wei_img.png

1053 ms

Our browser made a total of 42 requests to load all elements on the main page. We found that 90% of them (38 requests) were addressed to the original Yihua17.com, 5% (2 requests) were made to Hm.baidu.com and 2% (1 request) were made to Goutong.baidu.com. The less responsive or slowest element that took the longest time to load (7.1 sec) belongs to the original domain Yihua17.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 235.2 kB (11%)

Content Size

2.1 MB

After Optimization

1.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Yihua17.com main page is 2.1 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 1.9 MB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 13.1 kB

  • Original 17.2 kB
  • After minification 15.1 kB
  • After compression 4.1 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 2.1 kB, which is 12% 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 13.1 kB or 76% of the original size.

Image Optimization

-11%

Potential reduce by 214.8 kB

  • Original 1.9 MB
  • After minification 1.7 MB

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, Yihua 17 needs image optimization as it can save up to 214.8 kB or 11% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 6.4 kB

  • Original 193.7 kB
  • After minification 193.3 kB
  • After compression 187.3 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. This website has mostly compressed JavaScripts.

CSS Optimization

-14%

Potential reduce by 858 B

  • Original 6.3 kB
  • After minification 6.3 kB
  • After compression 5.4 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. Yihua17.com needs all CSS files to be minified and compressed as it can save up to 858 B or 14% of the original size.

Requests Breakdown

Number of requests can be reduced by 10 (24%)

Requests Now

41

After Optimization

31

  • Images
  • JavaScript
  • CSS

The browser has sent 41 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Yihua 17. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

index.html

index.html

203 ms

base.css

base.css

197 ms

common.css

common.css

413 ms

logo.png

logo.png

1386 ms

wei_img.png

wei_img.png

1053 ms

1-211123113SH26.jpg

1-211123113SH26.jpg

1708 ms

1-231114101U4R1.jpg

1-231114101U4R1.jpg

929 ms

1-231114100400A9.jpg

1-231114100400A9.jpg

2641 ms

1-231114095551416.jpg

1-231114095551416.jpg

1698 ms

1-150522140ALI.jpg

1-150522140ALI.jpg

1156 ms

1-150522140GYD.jpg

1-150522140GYD.jpg

1652 ms

1-150522140I3460.jpg

1-150522140I3460.jpg

1383 ms

defaultpic.gif

defaultpic.gif

1578 ms

jquery-1.9.1.min.js

jquery-1.9.1.min.js

1982 ms

jquery.superslide.2.1.1.js

jquery.superslide.2.1.1.js

1776 ms

common.js

common.js

1846 ms

hm.js

hm.js

1370 ms

phone_bg.png

phone_bg.png

1474 ms

nav_line.png

nav_line.png

1485 ms

nav_ying.png

nav_ying.png

1557 ms

fly_bg.png

fly_bg.png

1625 ms

banner_ico2.png

banner_ico2.png

1667 ms

1-1601091I9190-L.jpg

1-1601091I9190-L.jpg

3545 ms

1-1601091I9110-L.jpg

1-1601091I9110-L.jpg

2836 ms

1-1601091IZ40-L.jpg

1-1601091IZ40-L.jpg

4174 ms

1-1601091IU30-L.jpg

1-1601091IU30-L.jpg

7085 ms

index_news.png

index_news.png

1871 ms

jian.png

jian.png

2066 ms

indexp_jian.png

indexp_jian.png

2271 ms

index_ico1.png

index_ico1.png

2430 ms

black50.png

black50.png

2476 ms

black70.png

black70.png

2635 ms

index1_jian.png

index1_jian.png

2685 ms

index_ico2.png

index_ico2.png

2833 ms

index3_img1.png

index3_img1.png

2882 ms

footer_li1.png

footer_li1.png

3029 ms

footer_bg.png

footer_bg.png

3032 ms

select_bg.png

select_bg.png

3075 ms

hm.gif

hm.gif

298 ms

b.js

b.js

1584 ms

banner_ico1.png

banner_ico1.png

1627 ms

affim.js

affim.js

2220 ms

Accessibility Review

yihua17.com accessibility score

69

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.

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

<dl>'s do not contain only properly-ordered <dt> and <dd> groups, <script>, <template> or <div> elements.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

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

Links do not have a discernible name

Best Practices

yihua17.com best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

yihua17.com SEO score

69

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

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 Yihua17.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 Yihua17.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

yihua17.com

Open Graph description is not detected on the main page of Yihua 17. 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: