Tools & Wizards About Us

Report Summary

  • 11

    Performance

    Renders faster than
    24% of other websites

  • 85

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

powerheartg3.nl

Public Access Defibrillator - ZOLL Medical

Page Load Speed

6.2 sec in total

First Response

1.5 sec

Resources Loaded

3.2 sec

Page Rendered

1.4 sec

About Website

Welcome to powerheartg3.nl homepage info - get ready to check Powerheartg 3 best content right away, or after learning these important things about powerheartg3.nl

ZOLL offers lightweight and portable automated external defibrillators (AEDs) designed to assist lay rescuers. Learn more about our AEDs and Real CPR Help technology.

Visit powerheartg3.nl

Key Findings

We analyzed Powerheartg3.nl page load time and found that the first response time was 1.5 sec and then it took 4.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.

Performance Metrics

powerheartg3.nl performance score

11

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.9 s

4/100

10%

LCP (Largest Contentful Paint)

Value49.8 s

0/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value1,350 ms

17/100

30%

CLS (Cumulative Layout Shift)

Value0.419

23/100

15%

TTI (Time to Interactive)

Value14.4 s

9/100

10%

Network Requests Diagram

www.cardiacscience.com

1544 ms

css

37 ms

html5.js

58 ms

testimonial_style.css

77 ms

css

77 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Powerheartg3.nl, 13% (10 requests) were made to Use.typekit.net and 5% (4 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (1.5 sec) relates to the external source Cardiacscience.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 576.4 kB (5%)

Content Size

12.5 MB

After Optimization

11.9 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Powerheartg3.nl main page is 12.5 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. 80% 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 11.9 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 54.2 kB

  • Original 66.5 kB
  • After minification 59.9 kB
  • After compression 12.3 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 54.2 kB or 82% of the original size.

Image Optimization

-1%

Potential reduce by 128.3 kB

  • Original 11.9 MB
  • After minification 11.7 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. Powerheartg 3 images are well optimized though.

JavaScript Optimization

-55%

Potential reduce by 168.3 kB

  • Original 307.4 kB
  • After minification 303.6 kB
  • After compression 139.1 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 168.3 kB or 55% of the original size.

CSS Optimization

-86%

Potential reduce by 225.5 kB

  • Original 262.9 kB
  • After minification 249.3 kB
  • After compression 37.4 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. Powerheartg3.nl needs all CSS files to be minified and compressed as it can save up to 225.5 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 32 (55%)

Requests Now

58

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 58 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Powerheartg 3. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 20 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

powerheartg3.nl accessibility score

85

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

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

Best Practices

powerheartg3.nl best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

High

Issues were logged in the Issues panel in Chrome Devtools

SEO Factors

powerheartg3.nl SEO score

86

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

Links are not crawlable

Content Best Practices

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

Impact

Issue

High

Image elements do not have [alt] attributes

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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Powerheartg3.nl 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 Powerheartg3.nl 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 Powerheartg 3. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: