Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 96% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

arvd.com

Arrhythmogenic Right Ventricular Dysplasia/Cardiomyopathy (ARVD/C) Program| Johns Hopkins Heart and Vascular Institute

Page Load Speed

9.1 sec in total

First Response

3.4 sec

Resources Loaded

5 sec

Page Rendered

679 ms

arvd.com screenshot

About Website

Click here to check amazing ARVD content. Otherwise, check out these important facts you probably never knew about arvd.com

Our specialists at the Johns Hopkins ARVD/C program are dedicated to finding a cure and providing long-term care for patients diagnosed with arrhythmogenic right ventricular dysplasia/cardiomyopathy (...

Visit arvd.com

Key Findings

We analyzed Arvd.com page load time and found that the first response time was 3.4 sec and then it took 5.7 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

arvd.com performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

63/100

10%

LCP (Largest Contentful Paint)

Value18.1 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value310 ms

78/100

30%

CLS (Cumulative Layout Shift)

Value0.045

99/100

15%

TTI (Time to Interactive)

Value10.6 s

23/100

10%

Network Requests Diagram

arvd.com

3390 ms

arvd

400 ms

base.css

15 ms

email-decode.min.js

111 ms

jquery-1.8.1.min.js

114 ms

Our browser made a total of 35 requests to load all elements on the main page. We found that 3% of them (1 request) were addressed to the original Arvd.com, 69% (24 requests) were made to Hopkinsmedicine.org and 9% (3 requests) were made to Jhm.containers.piwik.pro. The less responsive or slowest element that took the longest time to load (3.4 sec) belongs to the original domain Arvd.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 187.0 kB (5%)

Content Size

3.5 MB

After Optimization

3.3 MB

In fact, the total size of Arvd.com main page is 3.5 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. 55% of websites need less resources to load. Images take 3.0 MB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 67.4 kB

  • Original 83.6 kB
  • After minification 64.5 kB
  • After compression 16.2 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 19.2 kB, which is 23% 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 67.4 kB or 81% of the original size.

Image Optimization

-4%

Potential reduce by 111.3 kB

  • Original 3.0 MB
  • After minification 2.8 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. ARVD images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 4.4 kB

  • Original 366.3 kB
  • After minification 366.3 kB
  • After compression 361.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-3%

Potential reduce by 3.8 kB

  • Original 126.0 kB
  • After minification 126.0 kB
  • After compression 122.1 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. Arvd.com has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 8 (27%)

Requests Now

30

After Optimization

22

The browser has sent 30 CSS, Javascripts, AJAX and image requests in order to completely render the main page of ARVD. 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 as a result speed up the page load time.

Accessibility Review

arvd.com accessibility score

99

Accessibility Issues

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

arvd.com best practices score

75

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

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

arvd.com SEO score

83

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

High

Tap targets are not sized appropriately

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 Arvd.com 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 Arvd.com 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 ARVD. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: