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columbianomas.org screenshot

Report Summary

  • 29

    Performance

    Renders faster than
    49% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 99

    SEO

    Google-friendlier than
    93% of websites

columbianomas.org

Northern Manhattan Study (NOMAS), Neurology, New York

Page Load Speed

3 sec in total

First Response

54 ms

Resources Loaded

2.7 sec

Page Rendered

275 ms

columbianomas.org screenshot

About Website

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

Northern Manhattan Study (NOMAS) is a research study of stroke and stroke risk factors in the Northern Manhattan community conducted at the Neurological Institute, Columbia University, Division of Str...

Visit columbianomas.org

Key Findings

We analyzed Columbianomas.org page load time and found that the first response time was 54 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

columbianomas.org performance score

29

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.7 s

2/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value9.2 s

13/100

10%

TBT (Total Blocking Time)

Value680 ms

44/100

30%

CLS (Cumulative Layout Shift)

Value0.12

84/100

15%

TTI (Time to Interactive)

Value12.1 s

16/100

10%

Network Requests Diagram

www.neurology.columbia.edu

54 ms

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12 ms

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75 ms

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53 ms

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99 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Columbianomas.org, 18% (8 requests) were made to Use.typekit.net and 2% (1 request) were made to P.typekit.net. The less responsive or slowest element that took the longest time to load (727 ms) relates to the external source Neurology.columbia.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 356.4 kB (43%)

Content Size

826.5 kB

After Optimization

470.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Columbianomas.org main page is 826.5 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. 85% 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. CSS take 365.1 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 220.5 kB

  • Original 268.5 kB
  • After minification 263.8 kB
  • After compression 48.0 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 220.5 kB or 82% of the original size.

Image Optimization

-7%

Potential reduce by 4.8 kB

  • Original 65.3 kB
  • After minification 60.5 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 NOMAS images are well optimized though.

JavaScript Optimization

-16%

Potential reduce by 20.1 kB

  • Original 127.6 kB
  • After minification 127.6 kB
  • After compression 107.6 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 20.1 kB or 16% of the original size.

CSS Optimization

-30%

Potential reduce by 111.0 kB

  • Original 365.1 kB
  • After minification 365.0 kB
  • After compression 254.1 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. Columbianomas.org needs all CSS files to be minified and compressed as it can save up to 111.0 kB or 30% of the original size.

Requests Breakdown

Number of requests can be reduced by 19 (54%)

Requests Now

35

After Optimization

16

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Columbia NOMAS. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.neurology.columbia.edu

www.neurology.columbia.edu

54 ms

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12 ms

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75 ms

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53 ms

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99 ms

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52 ms

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18 ms

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Accessibility Review

columbianomas.org accessibility score

100

Accessibility Issues

Best Practices

columbianomas.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

SEO Factors

columbianomas.org SEO score

99

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

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 Columbianomas.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 Columbianomas.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

columbianomas.org

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