Tools & Wizards About Us
learn.heart.org screenshot

Report Summary

  • 16

    Performance

    Renders faster than
    30% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

learn.heart.org

Lifelong Learning - Professional Heart Daily | American Heart Association

Page Load Speed

234 ms in total

First Response

46 ms

Resources Loaded

129 ms

Page Rendered

59 ms

learn.heart.org screenshot

About Website

Visit learn.heart.org now to see the best up-to-date Learn Heart content for United States and also check out these interesting facts you probably never knew about learn.heart.org

The AHA Lifelong Learning resources are premier tools in delivering quality science, evidence based continuing education for healthcare professionals.

Visit learn.heart.org

Key Findings

We analyzed Learn.heart.org page load time and found that the first response time was 46 ms and then it took 188 ms 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

learn.heart.org performance score

16

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value17.6 s

0/100

25%

SI (Speed Index)

Value11.8 s

4/100

10%

TBT (Total Blocking Time)

Value4,930 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value22.4 s

1/100

10%

Network Requests Diagram

learn.heart.org

46 ms

education

77 ms

Our browser made a total of 2 requests to load all elements on the main page. We found that 50% of them (1 request) were addressed to the original Learn.heart.org, 50% (1 request) were made to Professional.heart.org. The less responsive or slowest element that took the longest time to load (77 ms) relates to the external source Professional.heart.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 772.1 kB (44%)

Content Size

1.8 MB

After Optimization

982.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Learn.heart.org main page is 1.8 MB. This result falls within the top 5000 of lightweight and thus fast loading web pages. Only a small number of websites need less resources to load. CSS take 910.5 kB which makes up the majority of the site volume.

HTML Optimization

-13%

Potential reduce by 16 B

  • Original 122 B
  • After minification 122 B
  • After compression 106 B

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 16 B or 13% of the original size.

Image Optimization

-1%

Potential reduce by 5.8 kB

  • Original 762.2 kB
  • After minification 756.3 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. Learn Heart images are well optimized though.

JavaScript Optimization

-15%

Potential reduce by 12.1 kB

  • Original 81.6 kB
  • After minification 81.5 kB
  • After compression 69.5 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 12.1 kB or 15% of the original size.

CSS Optimization

-83%

Potential reduce by 754.1 kB

  • Original 910.5 kB
  • After minification 910.2 kB
  • After compression 156.3 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. Learn.heart.org needs all CSS files to be minified and compressed as it can save up to 754.1 kB or 83% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

0

After Optimization

0

Besides the initial HTML request, no CSS, Javascripts, AJAX or image files were requested in the course of web page rendering.

Network Requests Diagram

learn.heart.org

learn.heart.org

46 ms

education

education

77 ms

Accessibility Review

learn.heart.org accessibility score

91

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

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best Practices

learn.heart.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

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

learn.heart.org SEO score

86

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

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

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Learn.heart.org can be misinterpreted by Google and other search engines. Our service has detected that English 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 Learn.heart.org main page’s claimed encoding is . 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

learn.heart.org

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