Tools & Wizards About Us
divesda.com screenshot

Report Summary

  • 100

    Performance

    Renders faster than
    97% of other websites

  • 54

    Accessibility

    Visual factors better than
    that of 23% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 69

    SEO

    Google-friendlier than
    28% of websites

divesda.com

Scuba Divers of America - SDA Scuba Certification Agency

Page Load Speed

791 ms in total

First Response

172 ms

Resources Loaded

496 ms

Page Rendered

123 ms

divesda.com screenshot

About Website

Visit divesda.com now to see the best up-to-date Dive SDA content and also check out these interesting facts you probably never knew about divesda.com

We are proud to know that our scuba certification agency stands above the rest when it comes to the enjoyment, adventure, and fun of the scuba diver.

Visit divesda.com

Key Findings

We analyzed Divesda.com page load time and found that the first response time was 172 ms and then it took 619 ms to load all DOM resources and completely render a web page. This is quite a good result, as only 10% of websites can load faster.

Performance Metrics

divesda.com performance score

100

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value0.6 s

100/100

10%

LCP (Largest Contentful Paint)

Value0.6 s

100/100

25%

SI (Speed Index)

Value0.6 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value0.6 s

100/100

10%

Network Requests Diagram

divesda.com

172 ms

SDAlogodiver.jpg

132 ms

SDALOGO.gif

200 ms

SDAlogodiver2.jpg

136 ms

training.gif

135 ms

Our browser made a total of 16 requests to load all elements on the main page. We found that all of those requests were addressed to Divesda.com and no external sources were called. The less responsive or slowest element that took the longest time to load (324 ms) belongs to the original domain Divesda.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 13.3 kB (9%)

Content Size

142.1 kB

After Optimization

128.8 kB

  • HTML
  • Images

In fact, the total size of Divesda.com main page is 142.1 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. Only 10% of websites need less resources to load. Images take 135.1 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 5.4 kB

  • Original 7.0 kB
  • After minification 6.3 kB
  • After compression 1.7 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 749 B, which is 11% 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 5.4 kB or 76% of the original size.

Image Optimization

-6%

Potential reduce by 7.9 kB

  • Original 135.1 kB
  • After minification 127.2 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. Dive SDA images are well optimized though.

Requests Breakdown

We found no issues to fix!

Requests Now

15

After Optimization

15

  • Images

The browser has sent 15 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dive SDA. According to our analytics all requests are already optimized.

Network Requests Diagram

divesda.com

divesda.com

172 ms

SDAlogodiver.jpg

SDAlogodiver.jpg

132 ms

SDALOGO.gif

SDALOGO.gif

200 ms

SDAlogodiver2.jpg

SDAlogodiver2.jpg

136 ms

training.gif

training.gif

135 ms

diveshops.gif

diveshops.gif

136 ms

faq.gif

faq.gif

134 ms

photos.gif

photos.gif

195 ms

contact.gif

contact.gif

200 ms

faq_2.jpg

faq_2.jpg

268 ms

girl_putting_on_snorkle.jpg

girl_putting_on_snorkle.jpg

203 ms

google_girl4.jpg

google_girl4.jpg

271 ms

students.gif

students.gif

324 ms

scuba.jpg

scuba.jpg

266 ms

scubagirl5.jpg

scubagirl5.jpg

266 ms

1016a.gif

1016a.gif

269 ms

Accessibility Review

divesda.com accessibility score

54

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

High

Links do not have a discernible name

Best Practices

divesda.com 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

divesda.com SEO score

69

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

    WINDOWS-1252

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Divesda.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 Divesda.com main page’s claimed encoding is windows-1252. 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

divesda.com

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