Tools & Wizards About Us

Report Summary

  • 38

    Performance

    Renders faster than
    57% of other websites

  • 97

    Accessibility

    Visual factors better than
    that of 91% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

aaac.duhs.duke.edu

Duke Asthma, Allergy, and Airway Center | Durham, NC | Duke Health

Page Load Speed

5 sec in total

First Response

107 ms

Resources Loaded

4.3 sec

Page Rendered

578 ms

About Website

Welcome to aaac.duhs.duke.edu homepage info - get ready to check Aaac Duhs Duke best content for United States right away, or after learning these important things about aaac.duhs.duke.edu

Durham pulmonologists and lung disease doctors care for patients with asthma, allergies and airway diseases, including COPD, bronchiectasis and cystic fibrosis.

Visit aaac.duhs.duke.edu

Key Findings

We analyzed Aaac.duhs.duke.edu page load time and found that the first response time was 107 ms and then it took 4.9 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

aaac.duhs.duke.edu performance score

38

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value5.0 s

26/100

25%

SI (Speed Index)

Value6.2 s

43/100

10%

TBT (Total Blocking Time)

Value900 ms

31/100

30%

CLS (Cumulative Layout Shift)

Value0.012

100/100

15%

TTI (Time to Interactive)

Value14.7 s

8/100

10%

Network Requests Diagram

aaac.duhs.duke.edu

107 ms

duke-asthma-allergy-and-airway-center

3228 ms

css_Tj019j0jk_bYg6Q3uPVkWx_K6acKShP9ObyCA18Dsl4.css

48 ms

alert.css

159 ms

css_18hQxmIShpepyonA7_MFZlZytpB-0SkAOEfp67CtR1g.css

228 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Aaac.duhs.duke.edu, 91% (20 requests) were made to Dukehealth.org and 5% (1 request) were made to Alertbar.oit.duke.edu. The less responsive or slowest element that took the longest time to load (3.2 sec) relates to the external source Dukehealth.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 105.5 kB (8%)

Content Size

1.3 MB

After Optimization

1.2 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Aaac.duhs.duke.edu main page is 1.3 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. 45% of websites need less resources to load. Images take 553.8 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 85.4 kB

  • Original 102.4 kB
  • After minification 81.9 kB
  • After compression 17.0 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. This page needs HTML code to be minified as it can gain 20.5 kB, which is 20% 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 85.4 kB or 83% of the original size.

Image Optimization

-4%

Potential reduce by 19.9 kB

  • Original 553.8 kB
  • After minification 533.9 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. Aaac Duhs Duke images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 24 B

  • Original 407.9 kB
  • After minification 407.9 kB
  • After compression 407.9 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

-0%

Potential reduce by 275 B

  • Original 195.5 kB
  • After minification 195.5 kB
  • After compression 195.2 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. Aaac.duhs.duke.edu has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 3 (20%)

Requests Now

15

After Optimization

12

  • Images
  • JavaScript
  • CSS

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Aaac Duhs Duke. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

aaac.duhs.duke.edu accessibility score

97

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

Best Practices

aaac.duhs.duke.edu best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

aaac.duhs.duke.edu SEO score

93

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

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 Aaac.duhs.duke.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 Aaac.duhs.duke.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

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