Tools & Wizards About Us
usdct.org screenshot

Report Summary

  • 92

    Performance

    Renders faster than
    92% of other websites

  • 66

    Accessibility

    Visual factors better than
    that of 31% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 67

    SEO

    Google-friendlier than
    25% of websites

usdct.org

US Deep Caving Team

Page Load Speed

478 ms in total

First Response

138 ms

Resources Loaded

174 ms

Page Rendered

166 ms

usdct.org screenshot

About Website

Visit usdct.org now to see the best up-to-date US Dct content and also check out these interesting facts you probably never knew about usdct.org

The United States Deep Caving Team is a non-profit organization dedicated to the exploration, study, and public awareness of the earth's last remaining frontiers, and to the promotion of the developme...

Visit usdct.org

Key Findings

We analyzed Usdct.org page load time and found that the first response time was 138 ms and then it took 340 ms to load all DOM resources and completely render a web page. This is an excellent result, as only 5% of websites can load faster.

Performance Metrics

usdct.org performance score

92

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.1 s

100/100

10%

LCP (Largest Contentful Paint)

Value3.2 s

71/100

25%

SI (Speed Index)

Value1.1 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.089

92/100

15%

TTI (Time to Interactive)

Value1.1 s

100/100

10%

Network Requests Diagram

usdct.org

138 ms

usdctnew.css

9 ms

w3.css

9 ms

usdctlogo.jpg

7 ms

vertdiv.jpg

6 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that all of those requests were addressed to Usdct.org and no external sources were called. The less responsive or slowest element that took the longest time to load (138 ms) belongs to the original domain Usdct.org.

Page Optimization Overview & Recommendations

Page size can be reduced by 39.6 kB (9%)

Content Size

427.3 kB

After Optimization

387.8 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Usdct.org main page is 427.3 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. 20% of websites need less resources to load. Images take 397.1 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 4.6 kB

  • Original 6.2 kB
  • After minification 6.0 kB
  • After compression 1.6 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 4.6 kB or 75% of the original size.

Image Optimization

-4%

Potential reduce by 15.8 kB

  • Original 397.1 kB
  • After minification 381.4 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. US Dct images are well optimized though.

CSS Optimization

-80%

Potential reduce by 19.2 kB

  • Original 24.0 kB
  • After minification 23.1 kB
  • After compression 4.8 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. Usdct.org needs all CSS files to be minified and compressed as it can save up to 19.2 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of US Dct. According to our analytics all requests are already optimized.

Network Requests Diagram

usdct.org

usdct.org

138 ms

usdctnew.css

usdctnew.css

9 ms

w3.css

w3.css

9 ms

usdctlogo.jpg

usdctlogo.jpg

7 ms

vertdiv.jpg

vertdiv.jpg

6 ms

horizdiv.jpg

horizdiv.jpg

7 ms

wakullafront.jpg

wakullafront.jpg

13 ms

vertsmall.jpg

vertsmall.jpg

12 ms

topolarge.jpg

topolarge.jpg

16 ms

Accessibility Review

usdct.org accessibility score

66

Accessibility Issues

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

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

Best Practices

usdct.org best practices score

75

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

Serves images with low resolution

SEO Factors

usdct.org 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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Usdct.org 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 Usdct.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

usdct.org

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