Tools & Wizards About Us
usdda.com screenshot

Report Summary

  • 97

    Performance

    Renders faster than
    94% of other websites

  • 50

    Accessibility

    Visual factors better than
    that of 21% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

usdda.com

SCUBA - USDDA United States Dental Diving Assocaition - Dentists who love to SCUBA. If you're a dentist who loves to SCUBA, earn up to twenty hours of...

Page Load Speed

1.1 sec in total

First Response

235 ms

Resources Loaded

737 ms

Page Rendered

157 ms

usdda.com screenshot

About Website

Welcome to usdda.com homepage info - get ready to check USDDA best content right away, or after learning these important things about usdda.com

Our organization is comprised of Dentists who share the common interest of SCUBA diving, combining Diving with continuing dental education (CEU for AGD Member Maintenance credit).

Visit usdda.com

Key Findings

We analyzed Usdda.com page load time and found that the first response time was 235 ms and then it took 894 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

usdda.com performance score

97

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.8 s

100/100

10%

LCP (Largest Contentful Paint)

Value1.7 s

99/100

25%

SI (Speed Index)

Value0.8 s

100/100

10%

TBT (Total Blocking Time)

Value170 ms

92/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value2.8 s

97/100

10%

Network Requests Diagram

usdda.com

235 ms

dolphins.gif

178 ms

pointsOfInfo.jpg

170 ms

ww-2013.jpg

505 ms

aboutUs.jpg

179 ms

Our browser made a total of 11 requests to load all elements on the main page. We found that all of those requests were addressed to Usdda.com and no external sources were called. The less responsive or slowest element that took the longest time to load (505 ms) belongs to the original domain Usdda.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.2 kB (5%)

Content Size

115.5 kB

After Optimization

109.3 kB

  • HTML
  • Images

In fact, the total size of Usdda.com main page is 115.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only 5% of websites need less resources to load. Images take 107.3 kB which makes up the majority of the site volume.

HTML Optimization

-73%

Potential reduce by 6.0 kB

  • Original 8.2 kB
  • After minification 7.6 kB
  • After compression 2.2 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 6.0 kB or 73% of the original size.

Image Optimization

-0%

Potential reduce by 164 B

  • Original 107.3 kB
  • After minification 107.1 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. USDDA images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

10

After Optimization

10

  • Images

The browser has sent 10 CSS, Javascripts, AJAX and image requests in order to completely render the main page of USDDA. According to our analytics all requests are already optimized.

Network Requests Diagram

usdda.com

usdda.com

235 ms

dolphins.gif

dolphins.gif

178 ms

pointsOfInfo.jpg

pointsOfInfo.jpg

170 ms

ww-2013.jpg

ww-2013.jpg

505 ms

aboutUs.jpg

aboutUs.jpg

179 ms

application.jpg

application.jpg

177 ms

newsletter.jpg

newsletter.jpg

180 ms

photoAlbum.jpg

photoAlbum.jpg

256 ms

dives.jpg

dives.jpg

269 ms

testimonials.jpg

testimonials.jpg

268 ms

newsletterarticle.jpg

newsletterarticle.jpg

270 ms

Accessibility Review

usdda.com accessibility score

50

Accessibility Issues

Contrast

These are opportunities to improve the legibility of your content.

Impact

Issue

High

Background and foreground colors do not have a sufficient contrast ratio.

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

High

[lang] attributes do not have a valid value

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

usdda.com best practices score

58

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

usdda.com SEO score

67

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

Image elements do not have [alt] attributes

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    N/A

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Usdda.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Usdda.com main page’s claimed encoding is . Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

usdda.com

Open Graph description is not detected on the main page of USDDA. 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: