Tools & Wizards About Us
columbiaheartvalve.org screenshot

Report Summary

  • 39

    Performance

    Renders faster than
    58% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

columbiaheartvalve.org

Columbia Structural Heart and Valve Center | Division of Cardiology

Page Load Speed

1.5 sec in total

First Response

24 ms

Resources Loaded

1.1 sec

Page Rendered

361 ms

columbiaheartvalve.org screenshot

About Website

Welcome to columbiaheartvalve.org homepage info - get ready to check Columbia Heart Valve best content right away, or after learning these important things about columbiaheartvalve.org

The Columbia Structural Heart & Valve Center is a collaborative effort between the Center for Interventional Vascular Therapy (CIVT), and the Department of Cardiothoracic Surgery.

Visit columbiaheartvalve.org

Key Findings

We analyzed Columbiaheartvalve.org page load time and found that the first response time was 24 ms and then it took 1.5 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

columbiaheartvalve.org performance score

39

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.3 s

7/100

10%

LCP (Largest Contentful Paint)

Value7.9 s

3/100

25%

SI (Speed Index)

Value5.6 s

52/100

10%

TBT (Total Blocking Time)

Value570 ms

52/100

30%

CLS (Cumulative Layout Shift)

Value0.11

87/100

15%

TTI (Time to Interactive)

Value8.9 s

35/100

10%

Network Requests Diagram

columbia-structural-heart-and-valve-center

24 ms

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12 ms

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14 ms

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15 ms

style.css

31 ms

Our browser made a total of 31 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Columbiaheartvalve.org, 16% (5 requests) were made to Use.typekit.net and 10% (3 requests) were made to Columbiamed.containers.piwik.pro. The less responsive or slowest element that took the longest time to load (227 ms) relates to the external source Columbiamed.containers.piwik.pro.

Page Optimization Overview & Recommendations

Page size can be reduced by 196.7 kB (42%)

Content Size

468.8 kB

After Optimization

272.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Columbiaheartvalve.org main page is 468.8 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. 50% of websites need less resources to load. HTML takes 216.2 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 175.6 kB

  • Original 216.2 kB
  • After minification 212.3 kB
  • After compression 40.6 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 175.6 kB or 81% of the original size.

Image Optimization

-1%

Potential reduce by 974 B

  • Original 111.6 kB
  • After minification 110.6 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. Columbia Heart Valve images are well optimized though.

JavaScript Optimization

-14%

Potential reduce by 17.8 kB

  • Original 128.9 kB
  • After minification 128.9 kB
  • After compression 111.1 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 17.8 kB or 14% of the original size.

CSS Optimization

-19%

Potential reduce by 2.3 kB

  • Original 12.2 kB
  • After minification 12.2 kB
  • After compression 9.9 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. Columbiaheartvalve.org needs all CSS files to be minified and compressed as it can save up to 2.3 kB or 19% of the original size.

Requests Breakdown

Number of requests can be reduced by 14 (61%)

Requests Now

23

After Optimization

9

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 23 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Columbia Heart Valve. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 10 to 1 for JavaScripts and from 6 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

columbia-structural-heart-and-valve-center

columbia-structural-heart-and-valve-center

24 ms

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12 ms

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14 ms

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15 ms

style.css

style.css

31 ms

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26 ms

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19 ms

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21 ms

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31 ms

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25 ms

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29 ms

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173 ms

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172 ms

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171 ms

p.css

p.css

159 ms

24deb457-f8f4-4c3d-a597-c632b4201866.js

24deb457-f8f4-4c3d-a597-c632b4201866.js

227 ms

cuimc.svg

cuimc.svg

131 ms

logo-cardiology-desktop.svg

logo-cardiology-desktop.svg

200 ms

logo-columbia--white.svg

logo-columbia--white.svg

201 ms

logo-nyp-white.svg

logo-nyp-white.svg

196 ms

logo-columbia-doctors-white.svg

logo-columbia-doctors-white.svg

198 ms

valve_hero_option_3.jpg

valve_hero_option_3.jpg

38 ms

d

d

78 ms

d

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219 ms

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219 ms

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220 ms

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219 ms

cb-icons.woff

cb-icons.woff

31 ms

privacy-widgets.json

privacy-widgets.json

195 ms

ppms.js

ppms.js

189 ms

ppms.php

ppms.php

186 ms

Accessibility Review

columbiaheartvalve.org accessibility score

100

Accessibility Issues

Best Practices

columbiaheartvalve.org best practices score

83

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

Page has valid source maps

SEO Factors

columbiaheartvalve.org SEO score

100

Search Engine Optimization Advices

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Columbiaheartvalve.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 Columbiaheartvalve.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

columbiaheartvalve.org

Open Graph data is detected on the main page of Columbia Heart Valve. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: