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chapters.systemdynamics.org screenshot

Report Summary

  • 9

    Performance

    Renders faster than
    23% of other websites

  • 81

    Accessibility

    Visual factors better than
    that of 51% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 79

    SEO

    Google-friendlier than
    40% of websites

chapters.systemdynamics.org

System Dynamics Society | Home for Systems Thinkers and Modelers

Page Load Speed

5.5 sec in total

First Response

73 ms

Resources Loaded

3.6 sec

Page Rendered

1.8 sec

chapters.systemdynamics.org screenshot

About Website

Welcome to chapters.systemdynamics.org homepage info - get ready to check Chapters System Dynamics best content for United States right away, or after learning these important things about chapters.systemdynamics.org

The System Dynamics Society is a professional society that fosters and promotes training and research in the field of system dynamics.

Visit chapters.systemdynamics.org

Key Findings

We analyzed Chapters.systemdynamics.org page load time and found that the first response time was 73 ms and then it took 5.4 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

chapters.systemdynamics.org performance score

9

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.1 s

22/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value10.2 s

9/100

10%

TBT (Total Blocking Time)

Value2,220 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0.403

25/100

15%

TTI (Time to Interactive)

Value17.6 s

4/100

10%

Network Requests Diagram

chapters.systemdynamics.org

73 ms

systemdynamics.org

257 ms

css

328 ms

gximage2

383 ms

smush-lazy-load-native.min.js

233 ms

Our browser made a total of 74 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Chapters.systemdynamics.org, 77% (57 requests) were made to Fonts.gstatic.com and 16% (12 requests) were made to Systemdynamics.org. The less responsive or slowest element that took the longest time to load (675 ms) relates to the external source Fonts.gstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 408.3 kB (85%)

Content Size

481.4 kB

After Optimization

73.1 kB

  • HTML
  • Images

In fact, the total size of Chapters.systemdynamics.org main page is 481.4 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. HTML takes 472.9 kB which makes up the majority of the site volume.

HTML Optimization

-86%

Potential reduce by 408.3 kB

  • Original 472.9 kB
  • After minification 465.3 kB
  • After compression 64.6 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 408.3 kB or 86% of the original size.

Image Optimization

-0%

Potential reduce by 0 B

  • Original 8.5 kB
  • After minification 8.5 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. Chapters System Dynamics images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

5

After Optimization

5

  • Images
  • JavaScript
  • CSS

The browser has sent 5 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Chapters System Dynamics. According to our analytics all requests are already optimized.

Network Requests Diagram

chapters.systemdynamics.org

chapters.systemdynamics.org

73 ms

systemdynamics.org

systemdynamics.org

257 ms

css

css

328 ms

gximage2

gximage2

383 ms

smush-lazy-load-native.min.js

smush-lazy-load-native.min.js

233 ms

en.png

en.png

383 ms

new-logo.jpg

new-logo.jpg

489 ms

Roboto-Medium.woff

Roboto-Medium.woff

133 ms

KFOlCnqEu92Fr1MmEU9fChc-.woff

KFOlCnqEu92Fr1MmEU9fChc-.woff

486 ms

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KFOlCnqEu92Fr1MmEU9fChc9.ttf

598 ms

Roboto-Regular.woff

Roboto-Regular.woff

279 ms

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643 ms

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646 ms

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644 ms

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645 ms

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639 ms

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642 ms

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375 ms

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649 ms

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650 ms

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373 ms

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646 ms

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645 ms

WPMenuCart.woff

WPMenuCart.woff

231 ms

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647 ms

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661 ms

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KFOkCnqEu92Fr1Mu51xGIzQ.woff

662 ms

KFOkCnqEu92Fr1Mu51xGIzc.ttf

KFOkCnqEu92Fr1Mu51xGIzc.ttf

665 ms

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KFOjCnqEu92Fr1Mu51TjASc0CsI.woff

661 ms

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KFOjCnqEu92Fr1Mu51TjASc0CsE.ttf

663 ms

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660 ms

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675 ms

KFOjCnqEu92Fr1Mu51TzBic0CsI.woff

KFOjCnqEu92Fr1Mu51TzBic0CsI.woff

665 ms

KFOjCnqEu92Fr1Mu51TzBic0CsE.ttf

KFOjCnqEu92Fr1Mu51TzBic0CsE.ttf

675 ms

KFOjCnqEu92Fr1Mu51TLBCc0CsI.woff

KFOjCnqEu92Fr1Mu51TLBCc0CsI.woff

672 ms

KFOjCnqEu92Fr1Mu51TLBCc0CsE.ttf

KFOjCnqEu92Fr1Mu51TLBCc0CsE.ttf

675 ms

modules.ttf

modules.ttf

260 ms

Nunito-Regular.woff

Nunito-Regular.woff

352 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDLshdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDLshdTo3iQ.woff

652 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDLshdTo3ig.ttf

XRXI3I6Li01BKofiOc5wtlZ2di8HDLshdTo3ig.ttf

658 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDOUhdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDOUhdTo3iQ.woff

657 ms

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XRXI3I6Li01BKofiOc5wtlZ2di8HDOUhdTo3ig.ttf

662 ms

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XRXI3I6Li01BKofiOc5wtlZ2di8HDDshdTo3iQ.woff

660 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDDshdTo3ig.ttf

XRXI3I6Li01BKofiOc5wtlZ2di8HDDshdTo3ig.ttf

660 ms

Nunito-SemiBold.woff

Nunito-SemiBold.woff

351 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDGUmdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDGUmdTo3iQ.woff

656 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDGUmdTo3ig.ttf

XRXI3I6Li01BKofiOc5wtlZ2di8HDGUmdTo3ig.ttf

661 ms

Nunito-Bold.woff

Nunito-Bold.woff

610 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDFwmdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDFwmdTo3iQ.woff

658 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDFwmdTo3ig.ttf

XRXI3I6Li01BKofiOc5wtlZ2di8HDFwmdTo3ig.ttf

661 ms

Nunito-ExtraBold.woff

Nunito-ExtraBold.woff

456 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDDsmdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDDsmdTo3iQ.woff

661 ms

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XRXI3I6Li01BKofiOc5wtlZ2di8HDDsmdTo3ig.ttf

659 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDBImdTo3iQ.woff

XRXI3I6Li01BKofiOc5wtlZ2di8HDBImdTo3iQ.woff

205 ms

XRXI3I6Li01BKofiOc5wtlZ2di8HDBImdTo3ig.ttf

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201 ms

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196 ms

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197 ms

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197 ms

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196 ms

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199 ms

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198 ms

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193 ms

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192 ms

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194 ms

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194 ms

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182 ms

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185 ms

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182 ms

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182 ms

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183 ms

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181 ms

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177 ms

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175 ms

Accessibility Review

chapters.systemdynamics.org accessibility score

81

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

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

chapters.systemdynamics.org 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

chapters.systemdynamics.org SEO score

79

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

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

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 Chapters.systemdynamics.org 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 Chapters.systemdynamics.org 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

chapters.systemdynamics.org

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