Access conference.systemdynamics.org. System Dynamics Society | Home for Systems Thinkers and Modelers

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

24/100

10%

LCP (Largest Contentful Paint)

Value4.5 s

37/100

25%

SI (Speed Index)

Value4.0 s

81/100

10%

TBT (Total Blocking Time)

Value220 ms

87/100

30%

CLS (Cumulative Layout Shift)

Value0.174

69/100

15%

TTI (Time to Interactive)

Value8.2 s

41/100

10%

conference.systemdynamics.org

471 ms

wp-emoji-release.min.js

104 ms

jquery.js

174 ms

jquery-migrate.min.js

74 ms

DD_roundies.js

109 ms

Our browser made a total of 80 requests to load all elements on the main page. We found that 60% of them (48 requests) were addressed to the original Conference.systemdynamics.org, 24% (19 requests) were made to Pbs.twimg.com and 5% (4 requests) were made to Platform.twitter.com. The less responsive or slowest element that took the longest time to load (638 ms) belongs to the original domain Conference.systemdynamics.org.

Content Size

5.9 MB

After Optimization

5.5 MB

In fact, the total size of Conference.systemdynamics.org main page is 5.9 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. 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. Images take 5.7 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 75.2 kB

Original 94.7 kB
After minification 94.2 kB
After compression 19.5 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 75.2 kB or 79% of the original size.

Image Optimization

-4%

Potential reduce by 249.5 kB

Original 5.7 MB
After minification 5.4 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. Conference System Dynamics images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 104.8 kB

Original 153.4 kB
After minification 141.2 kB
After compression 48.7 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 104.8 kB or 68% of the original size.

CSS Optimization

-85%

Potential reduce by 26.7 kB

Original 31.5 kB
After minification 31.5 kB
After compression 4.8 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. Conference.systemdynamics.org needs all CSS files to be minified and compressed as it can save up to 26.7 kB or 85% of the original size.

Requests Now

After Optimization

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Conference System Dynamics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 9 to 1 for JavaScripts and from 4 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

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.

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

These items highlight common accessibility best practices.

High

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

Areas of Improvement

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

High

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

High

robots.txt is not valid

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/).

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 Conference.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 Conference.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

conference.systemdynamics.org

Open Graph description is not detected on the main page of Conference System Dynamics. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

System Dynamics Society | Home for Systems Thinkers and Modelers

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

conference.systemdynamics.org

wp-emoji-release.min.js

jquery.js

jquery-migrate.min.js

DD_roundies.js

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

conference.systemdynamics.org

wp-emoji-release.min.js

jquery.js

jquery-migrate.min.js

DD_roundies.js

jquery.cross-slide.js

script.js

facebook_logo2.png

widgets.js

SDS-Logo-JP.gif

inputbackgr.gif

c2016-2015-Greenwood%202.jpg

delft.jpg

greenwood-strategic-advisors.jpg

p1.jpg

delft-campus-1.jpg

bikeandcanal.jpg

delft-3.jpg

phd-colloquium-2014.jpg

canal.jpg

delft-4.jpg

c2016x3-2015x3-ventana2.png

delft-6.jpg

people-confgroup2-2013.jpg

p2.jpg

delft-7.jpg

people-confgroup3-2011.jpg

delft-campus-2.jpg

BannerRedRibbon.jpg

DelftChurchBanner.jpg

people-confgroup4-2013.jpg

c2016-2015-Greenwood%201.jpg

people-group1-2014.jpg

delft-8.jpg

people-groupcollage-1970s.jpg

c2016-2015-Greenwood%203.jpg

people-group2-2014.jpg

people-confgroup6-2013.jpg

BoatBanner.jpg

c2016x3-2015x3-ventana3.png

delft-1.jpg

maw-2013.jpg

buildingreparaia.jpg