Tools & Wizards About Us

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

ecgsim.org

ECGSIM: The interactive ECG tool for research and education

Page Load Speed

1.2 sec in total

First Response

288 ms

Resources Loaded

812 ms

Page Rendered

141 ms

About Website

Welcome to ecgsim.org homepage info - get ready to check ECGSIM best content right away, or after learning these important things about ecgsim.org

ECGSIM is an interactive simulation program, aimed at research and education, that enables one to study the relationship between the electric activity of the heart and the ECG.

Visit ecgsim.org

Key Findings

We analyzed Ecgsim.org page load time and found that the first response time was 288 ms and then it took 953 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

ecgsim.org performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.2 s

99/100

10%

LCP (Largest Contentful Paint)

Value1.2 s

100/100

25%

SI (Speed Index)

Value1.7 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value1.2 s

100/100

10%

Network Requests Diagram

ecgsim.org

288 ms

stylesheet.css

93 ms

logotype.png

275 ms

whitespace.png

184 ms

IMG_8484.jpg

523 ms

Our browser made a total of 5 requests to load all elements on the main page. We found that all of those requests were addressed to Ecgsim.org and no external sources were called. The less responsive or slowest element that took the longest time to load (523 ms) belongs to the original domain Ecgsim.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 8.6 kB (8%)

Content Size

104.3 kB

After Optimization

95.7 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Ecgsim.org main page is 104.3 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. Only 5% of websites need less resources to load. Images take 96.1 kB which makes up the majority of the site volume.

HTML Optimization

-66%

Potential reduce by 2.3 kB

  • Original 3.5 kB
  • After minification 3.0 kB
  • After compression 1.2 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 529 B, which is 15% 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 2.3 kB or 66% of the original size.

Image Optimization

-3%

Potential reduce by 2.4 kB

  • Original 96.1 kB
  • After minification 93.7 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. ECGSIM images are well optimized though.

CSS Optimization

-82%

Potential reduce by 3.8 kB

  • Original 4.7 kB
  • After minification 3.2 kB
  • After compression 851 B

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. Ecgsim.org needs all CSS files to be minified and compressed as it can save up to 3.8 kB or 82% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

4

After Optimization

4

  • Images
  • CSS

The browser has sent 4 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ECGSIM. According to our analytics all requests are already optimized.

Network Requests Diagram

Accessibility Review

ecgsim.org accessibility score

92

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.

Best Practices

ecgsim.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

ecgsim.org SEO score

69

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-15

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Ecgsim.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 Ecgsim.org main page’s claimed encoding is iso-8859-15. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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