Tools & Wizards About Us

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 100

    Accessibility

    Visual factors better than
    that of 97% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 93

    SEO

    Google-friendlier than
    83% of websites

eyecenter.dukemedicine.org

Ophthalmology | Raleigh, Durham, North Carolina | Duke Health

Page Load Speed

1.7 sec in total

First Response

80 ms

Resources Loaded

1.2 sec

Page Rendered

389 ms

About Website

Visit eyecenter.dukemedicine.org now to see the best up-to-date Eyecenter Duke Medicine content for United States and also check out these interesting facts you probably never knew about eyecenter.dukemedicine.org

As one of the top eye centers in the country, the Duke Eye Center treats more than 165,000 people each year and offers the full spectrum of eye care.

Visit eyecenter.dukemedicine.org

Key Findings

We analyzed Eyecenter.dukemedicine.org page load time and found that the first response time was 80 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

eyecenter.dukemedicine.org performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value10.8 s

0/100

25%

SI (Speed Index)

Value5.4 s

57/100

10%

TBT (Total Blocking Time)

Value600 ms

50/100

30%

CLS (Cumulative Layout Shift)

Value0.234

53/100

15%

TTI (Time to Interactive)

Value13.1 s

12/100

10%

Network Requests Diagram

eyecenter.dukemedicine.org

80 ms

28 ms

eye-care

104 ms

eye-care

160 ms

css_Tj019j0jk_bYg6Q3uPVkWx_K6acKShP9ObyCA18Dsl4.css

27 ms

Our browser made a total of 23 requests to load all elements on the main page. We found that 9% of them (2 requests) were addressed to the original Eyecenter.dukemedicine.org, 78% (18 requests) were made to Dukehealth.org and 4% (1 request) were made to Dukemedicine.org. The less responsive or slowest element that took the longest time to load (365 ms) relates to the external source Dukehealth.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 59.6 kB (8%)

Content Size

734.3 kB

After Optimization

674.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Eyecenter.dukemedicine.org main page is 734.3 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. 30% of websites need less resources to load. Javascripts take 275.6 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 59.2 kB

  • Original 73.2 kB
  • After minification 64.6 kB
  • After compression 14.0 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 8.6 kB, which is 12% 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 59.2 kB or 81% of the original size.

Image Optimization

-0%

Potential reduce by 49 B

  • Original 197.5 kB
  • After minification 197.5 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. Eyecenter Duke Medicine images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 93 B

  • Original 275.6 kB
  • After minification 275.6 kB
  • After compression 275.5 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 188.1 kB
  • After minification 188.1 kB
  • After compression 187.8 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. Eyecenter.dukemedicine.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 5 (36%)

Requests Now

14

After Optimization

9

  • Images
  • JavaScript
  • CSS

The browser has sent 14 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Eyecenter Duke Medicine. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 6 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

eyecenter.dukemedicine.org accessibility score

100

Accessibility Issues

Best Practices

eyecenter.dukemedicine.org 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

SEO Factors

eyecenter.dukemedicine.org 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 Eyecenter.dukemedicine.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 Eyecenter.dukemedicine.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

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