Tools & Wizards About Us

Report Summary

  • 17

    Performance

    Renders faster than
    32% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

dulwich-shanghaiminhang.cn

上海德威国际学校 – 上海IB学校 | 上海德威外籍人员子女学校（浦西）

Page Load Speed

7.6 sec in total

First Response

274 ms

Resources Loaded

6.8 sec

Page Rendered

500 ms

About Website

Click here to check amazing Dulwich Shanghaiminhang content. Otherwise, check out these important facts you probably never knew about dulwich-shanghaiminhang.cn

上海德威外籍人员子女学校（浦西）是CIS国际学校理事会和FOBISIA英国国际学校亚洲联盟成员学校，招收2-18岁的外籍学生。更多关于上海德威国际学校的信息，请访问上海德威浦西官网。

Visit dulwich-shanghaiminhang.cn

Key Findings

We analyzed Dulwich-shanghaiminhang.cn page load time and found that the first response time was 274 ms and then it took 7.3 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

dulwich-shanghaiminhang.cn performance score

17

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.2 s

8/100

10%

LCP (Largest Contentful Paint)

Value17.5 s

0/100

25%

SI (Speed Index)

Value20.7 s

0/100

10%

TBT (Total Blocking Time)

Value2,620 ms

4/100

30%

CLS (Cumulative Layout Shift)

Value0.035

100/100

15%

TTI (Time to Interactive)

Value26.3 s

0/100

10%

Network Requests Diagram

dulwich-shanghaiminhang.cn

274 ms

shanghai-puxi.dulwich.org

1851 ms

optimize.js

67 ms

sdkEntry.js

1688 ms

modernizr-custom.js

272 ms

Our browser made a total of 51 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Dulwich-shanghaiminhang.cn, 37% (19 requests) were made to Assets.dulwich.org and 27% (14 requests) were made to Dulwich.org. The less responsive or slowest element that took the longest time to load (2 sec) relates to the external source Assets.dulwich.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 214.7 kB (16%)

Content Size

1.4 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dulwich-shanghaiminhang.cn main page is 1.4 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. 50% of websites need less resources to load. Images take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 136.4 kB

  • Original 154.9 kB
  • After minification 101.8 kB
  • After compression 18.4 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 53.1 kB, which is 34% 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 136.4 kB or 88% of the original size.

Image Optimization

-4%

Potential reduce by 46.2 kB

  • Original 1.0 MB
  • After minification 997.7 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. Dulwich Shanghaiminhang images are well optimized though.

JavaScript Optimization

-29%

Potential reduce by 32.1 kB

  • Original 111.6 kB
  • After minification 111.6 kB
  • After compression 79.5 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 32.1 kB or 29% of the original size.

CSS Optimization

-0%

Potential reduce by 0 B

  • Original 58.5 kB
  • After minification 58.5 kB
  • After compression 58.5 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. Dulwich-shanghaiminhang.cn has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 10 (26%)

Requests Now

38

After Optimization

28

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 38 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dulwich Shanghaiminhang. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 11 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

dulwich-shanghaiminhang.cn accessibility score

83

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not have valid values

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

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

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

dulwich-shanghaiminhang.cn best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Missing source maps for large first-party JavaScript

SEO Factors

dulwich-shanghaiminhang.cn SEO score

93

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

Links do not have descriptive text

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

    EN

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dulwich-shanghaiminhang.cn can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Dulwich-shanghaiminhang.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

Open Graph data is detected on the main page of Dulwich Shanghaiminhang. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: