Tools & Wizards About Us
stars.columbia.edu screenshot

Report Summary

  • 12

    Performance

    Renders faster than
    25% of other websites

  • 99

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

stars.columbia.edu

Substance Treatment and Research Service (STARS) | Columbia University Department of Psychiatry

Page Load Speed

6.7 sec in total

First Response

132 ms

Resources Loaded

6.2 sec

Page Rendered

355 ms

stars.columbia.edu screenshot

About Website

Visit stars.columbia.edu now to see the best up-to-date STARS Columbia content for United States and also check out these interesting facts you probably never knew about stars.columbia.edu

STARS provides free and confidential treatment of substance abuse in the context of a research treatment clinical trial.

Visit stars.columbia.edu

Key Findings

We analyzed Stars.columbia.edu page load time and found that the first response time was 132 ms and then it took 6.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

stars.columbia.edu performance score

12

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value19.4 s

0/100

10%

TBT (Total Blocking Time)

Value13,290 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.147

77/100

15%

TTI (Time to Interactive)

Value24.3 s

0/100

10%

Network Requests Diagram

substance-treatment-and-research-service-stars

132 ms

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34 ms

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161 ms

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62 ms

Our browser made a total of 53 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Stars.columbia.edu, 8% (4 requests) were made to Use.typekit.net and 6% (3 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (1.8 sec) relates to the external source Fonts.gstatic.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 654.4 kB (44%)

Content Size

1.5 MB

After Optimization

822.2 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Stars.columbia.edu main page is 1.5 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. 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 691.6 kB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 147.5 kB

  • Original 179.4 kB
  • After minification 177.1 kB
  • After compression 31.9 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 147.5 kB or 82% of the original size.

Image Optimization

-6%

Potential reduce by 29.0 kB

  • Original 465.5 kB
  • After minification 436.5 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. STARS Columbia images are well optimized though.

JavaScript Optimization

-10%

Potential reduce by 14.4 kB

  • Original 140.1 kB
  • After minification 140.1 kB
  • After compression 125.7 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

-67%

Potential reduce by 463.5 kB

  • Original 691.6 kB
  • After minification 688.9 kB
  • After compression 228.1 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. Stars.columbia.edu needs all CSS files to be minified and compressed as it can save up to 463.5 kB or 67% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (57%)

Requests Now

44

After Optimization

19

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 44 CSS, Javascripts, AJAX and image requests in order to completely render the main page of STARS Columbia. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 14 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

substance-treatment-and-research-service-stars

substance-treatment-and-research-service-stars

132 ms

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p.css

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107 ms

analytics.js

analytics.js

520 ms

cuimc.svg

cuimc.svg

131 ms

logo-psychiatry-desktop.svg

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logo-columbia--white.svg

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200 ms

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1819 ms

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548 ms

collect

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1209 ms

collect

collect

1184 ms

collect

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841 ms

collect

collect

841 ms

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Accessibility Review

stars.columbia.edu 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

stars.columbia.edu 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

stars.columbia.edu 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 Stars.columbia.edu 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 Stars.columbia.edu 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

stars.columbia.edu

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