Tools & Wizards About Us
dukeeyecenter.duke.edu screenshot

Report Summary

  • 48

    Performance

    Renders faster than
    66% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

dukeeyecenter.duke.edu

Home | Duke Department Of Ophthalmology

Page Load Speed

3.5 sec in total

First Response

207 ms

Resources Loaded

2.9 sec

Page Rendered

407 ms

dukeeyecenter.duke.edu screenshot

About Website

Click here to check amazing Duke Eyecenter content for United States. Otherwise, check out these important facts you probably never knew about dukeeyecenter.duke.edu

Visit dukeeyecenter.duke.edu

Key Findings

We analyzed Dukeeyecenter.duke.edu page load time and found that the first response time was 207 ms and then it took 3.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

dukeeyecenter.duke.edu performance score

48

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value7.9 s

0/100

10%

LCP (Largest Contentful Paint)

Value11.8 s

0/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.001

100/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

dukeeyecenter.duke.edu

207 ms

google_tag.script.js

32 ms

ajax-progress.module.css

64 ms

align.module.css

109 ms

autocomplete-loading.module.css

108 ms

Our browser made a total of 75 requests to load all elements on the main page. We found that 79% of them (59 requests) were addressed to the original Dukeeyecenter.duke.edu, 5% (4 requests) were made to Fonts.gstatic.com and 4% (3 requests) were made to Use.fontawesome.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Dukeeyecenter.duke.edu.

Page Optimization Overview & Recommendations

Page size can be reduced by 488.3 kB (21%)

Content Size

2.3 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dukeeyecenter.duke.edu main page is 2.3 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. 50% of websites need less resources to load. Images take 1.8 MB which makes up the majority of the site volume.

HTML Optimization

-82%

Potential reduce by 42.4 kB

  • Original 51.4 kB
  • After minification 43.9 kB
  • After compression 9.1 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 7.5 kB, which is 15% 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 42.4 kB or 82% of the original size.

Image Optimization

-10%

Potential reduce by 171.9 kB

  • Original 1.8 MB
  • After minification 1.6 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. Duke Eyecenter images are well optimized though.

JavaScript Optimization

-1%

Potential reduce by 814 B

  • Original 91.4 kB
  • After minification 91.3 kB
  • After compression 90.6 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. This website has mostly compressed JavaScripts.

CSS Optimization

-79%

Potential reduce by 273.2 kB

  • Original 346.4 kB
  • After minification 345.2 kB
  • After compression 73.2 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. Dukeeyecenter.duke.edu needs all CSS files to be minified and compressed as it can save up to 273.2 kB or 79% of the original size.

Requests Breakdown

Number of requests can be reduced by 45 (66%)

Requests Now

68

After Optimization

23

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 68 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Duke Eyecenter. 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 34 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dukeeyecenter.duke.edu

dukeeyecenter.duke.edu

207 ms

google_tag.script.js

google_tag.script.js

32 ms

ajax-progress.module.css

ajax-progress.module.css

64 ms

align.module.css

align.module.css

109 ms

autocomplete-loading.module.css

autocomplete-loading.module.css

108 ms

fieldgroup.module.css

fieldgroup.module.css

108 ms

container-inline.module.css

container-inline.module.css

108 ms

clearfix.module.css

clearfix.module.css

136 ms

details.module.css

details.module.css

178 ms

hidden.module.css

hidden.module.css

133 ms

item-list.module.css

item-list.module.css

134 ms

js.module.css

js.module.css

134 ms

nowrap.module.css

nowrap.module.css

176 ms

position-container.module.css

position-container.module.css

177 ms

progress.module.css

progress.module.css

177 ms

reset-appearance.module.css

reset-appearance.module.css

175 ms

resize.module.css

resize.module.css

177 ms

sticky-header.module.css

sticky-header.module.css

375 ms

system-status-counter.css

system-status-counter.css

281 ms

system-status-report-counters.css

system-status-report-counters.css

280 ms

system-status-report-general-info.css

system-status-report-general-info.css

280 ms

tabledrag.module.css

tabledrag.module.css

374 ms

tablesort.module.css

tablesort.module.css

275 ms

tree-child.module.css

tree-child.module.css

303 ms

views.module.css

views.module.css

476 ms

filter.caption.css

filter.caption.css

477 ms

filter.caption.css

filter.caption.css

373 ms

addtoany.css

addtoany.css

473 ms

paragraphs.unpublished.css

paragraphs.unpublished.css

475 ms

node.css

node.css

400 ms

bootstrap.min.css

bootstrap.min.css

43 ms

all.css

all.css

37 ms

messages-light.css

messages-light.css

400 ms

style.css

style.css

2173 ms

alert.css

alert.css

190 ms

alert.html

alert.html

191 ms

jquery.min.js

jquery.min.js

1094 ms

drupalSettingsLoader.js

drupalSettingsLoader.js

500 ms

drupal.js

drupal.js

869 ms

drupal.init.js

drupal.init.js

570 ms

page.js

page.js

52 ms

bootstrap.bundle.min.js

bootstrap.bundle.min.js

56 ms

addtoany.js

addtoany.js

497 ms

popper.min.js

popper.min.js

548 ms

bootstrap.min.js

bootstrap.min.js

518 ms

global.js

global.js

769 ms

css2

css2

39 ms

duke-eye-center-logo-white.svg

duke-eye-center-logo-white.svg

49 ms

Hudson%20photo1500.jpg

Hudson%20photo1500.jpg

202 ms

education-200px.png

education-200px.png

91 ms

research-200px.png

research-200px.png

91 ms

patient_care-blue_-200px.png

patient_care-blue_-200px.png

91 ms

giving-200px.png

giving-200px.png

91 ms

hudson400.png

hudson400.png

211 ms

vision_2024_cover_14_smaller.png

vision_2024_cover_14_smaller.png

245 ms

_D%26I%20website%20header.png

_D%26I%20website%20header.png

338 ms

juliet_nolt_1784908342.jpeg

juliet_nolt_1784908342.jpeg

145 ms

grewal.png

grewal.png

329 ms

woodward_article.jpg

woodward_article.jpg

169 ms

duke-eye-center-logo-blue.svg

duke-eye-center-logo-blue.svg

199 ms

pattern-dark.png

pattern-dark.png

233 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0C4k.woff

86 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0C4k.woff

114 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsgH1y4k.woff

130 ms

pattern.png

pattern.png

200 ms

fb-icon.svg

fb-icon.svg

199 ms

twitter-icon.svg

twitter-icon.svg

225 ms

instagram-icon.svg

instagram-icon.svg

226 ms

linkedin-icon.svg

linkedin-icon.svg

299 ms

fa-solid-900.woff

fa-solid-900.woff

54 ms

fa-regular-400.woff

fa-regular-400.woff

81 ms

gtm.js

gtm.js

91 ms

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkaVQ.woff

memQYaGs126MiZpBA-UFUIcVXSCEkx2cmqvXlWq8tWZ0Pw86hd0Rk8ZkaVQ.woff

55 ms

sm.25.html

sm.25.html

54 ms

eso.D0Uc7kY6.js

eso.D0Uc7kY6.js

52 ms

Accessibility Review

dukeeyecenter.duke.edu accessibility score

91

Accessibility Issues

Names and labels

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

dukeeyecenter.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

Page has valid source maps

SEO Factors

dukeeyecenter.duke.edu SEO score

71

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

High

Image elements do not have [alt] attributes

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 Dukeeyecenter.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 Dukeeyecenter.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

dukeeyecenter.duke.edu

Open Graph description is not detected on the main page of Duke Eyecenter. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: