Tools & Wizards About Us
saee.cn screenshot

Report Summary

  • 78

    Performance

    Renders faster than
    85% of other websites

  • 42

    Accessibility

    Visual factors better than
    that of 19% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 78

    SEO

    Google-friendlier than
    39% of websites

saee.cn

上海水生科技股份有限公司

Page Load Speed

19.8 sec in total

First Response

898 ms

Resources Loaded

18.6 sec

Page Rendered

269 ms

saee.cn screenshot

About Website

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

上海水生科技股份有限公司（简称“上海水生科技”），创立于2005年，是水环境生态保护和修复领域技术领航者。公司主要提供水环境生态治理综合服务，包括：水环境生态项目设计、施工、运维，水环境生态调查监测和水生态系统健康评估，水生动植物培育和水生态制剂生产销售，以及水体智能化维护设备开发和销售等。

Visit saee.cn

Key Findings

We analyzed Saee.cn page load time and found that the first response time was 898 ms and then it took 18.9 sec to load all DOM resources and completely render a web page. This is an excellent result, as only a small number of websites can load faster.

Performance Metrics

saee.cn performance score

78

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.1 s

81/100

10%

LCP (Largest Contentful Paint)

Value3.1 s

75/100

25%

SI (Speed Index)

Value19.2 s

0/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.145

77/100

15%

TTI (Time to Interactive)

Value2.1 s

99/100

10%

Network Requests Diagram

saee.cn

898 ms

bootstrap.min.css

467 ms

animate.min.css

442 ms

swiper.min.css

440 ms

style.css

475 ms

Our browser made a total of 46 requests to load all elements on the main page. We found that all of those requests were addressed to Saee.cn and no external sources were called. The less responsive or slowest element that took the longest time to load (16.9 sec) belongs to the original domain Saee.cn.

Page Optimization Overview & Recommendations

Page size can be reduced by 301.1 kB (15%)

Content Size

2.0 MB

After Optimization

1.7 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Saee.cn main page is 2.0 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. 20% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-84%

Potential reduce by 37.7 kB

  • Original 45.0 kB
  • After minification 28.5 kB
  • After compression 7.3 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 16.5 kB, which is 37% 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 37.7 kB or 84% of the original size.

Image Optimization

-9%

Potential reduce by 155.0 kB

  • Original 1.8 MB
  • After minification 1.6 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. Saee images are well optimized though.

JavaScript Optimization

-9%

Potential reduce by 5.4 kB

  • Original 62.6 kB
  • After minification 60.9 kB
  • After compression 57.1 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

-75%

Potential reduce by 103.0 kB

  • Original 137.5 kB
  • After minification 137.5 kB
  • After compression 34.5 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. Saee.cn needs all CSS files to be minified and compressed as it can save up to 103.0 kB or 75% of the original size.

Requests Breakdown

Number of requests can be reduced by 8 (18%)

Requests Now

45

After Optimization

37

  • Images
  • JavaScript
  • CSS

The browser has sent 45 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Saee. 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 from 4 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

saee.cn

saee.cn

898 ms

bootstrap.min.css

bootstrap.min.css

467 ms

animate.min.css

animate.min.css

442 ms

swiper.min.css

swiper.min.css

440 ms

style.css

style.css

475 ms

jquery-1.10.2.min.js

jquery-1.10.2.min.js

717 ms

carousel.js

carousel.js

449 ms

wow.min.js

wow.min.js

658 ms

swiper.min.js

swiper.min.js

881 ms

common.js

common.js

680 ms

index.js

index.js

691 ms

loading.gif

loading.gif

1497 ms

head-bg.png

head-bg.png

252 ms

logo.png

logo.png

261 ms

nav.png

nav.png

874 ms

seach-tip.png

seach-tip.png

848 ms

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15329 ms

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4559 ms

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8787 ms

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16854 ms

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15756 ms

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4237 ms

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10549 ms

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5599 ms

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6342 ms

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7698 ms

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8912 ms

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2021091311462527.jpg

14572 ms

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10068 ms

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11378 ms

20210913115050667.jpg

20210913115050667.jpg

14824 ms

erweima.jpg

erweima.jpg

11716 ms

qq.png

qq.png

12306 ms

prev.png

prev.png

12507 ms

next.png

next.png

12727 ms

about-bg.png

about-bg.png

12958 ms

about-tip1.png

about-tip1.png

13179 ms

about-tip4.png

about-tip4.png

13404 ms

about-tip3.png

about-tip3.png

13624 ms

about-tip2.png

about-tip2.png

13844 ms

case-bg.jpg

case-bg.jpg

14371 ms

2021081113562044.jpg

2021081113562044.jpg

14647 ms

tip.png

tip.png

14734 ms

20210811133623455.jpg

20210811133623455.jpg

14929 ms

20210308103539626.jpg

20210308103539626.jpg

16294 ms

foot-bg.jpg

foot-bg.jpg

15211 ms

Accessibility Review

saee.cn accessibility score

42

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

saee.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

saee.cn SEO score

78

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Saee.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 Saee.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

saee.cn

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