Tools & Wizards About Us
rainbowreefdivers.com screenshot

Report Summary

  • 98

    Performance

    Renders faster than
    95% of other websites

  • 61

    Accessibility

    Visual factors better than
    that of 27% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 67

    SEO

    Google-friendlier than
    26% of websites

rainbowreefdivers.com

SCUBA Diving Professional Educator for UTD Singapore, NAUI, DAN and IANTD

Page Load Speed

3.7 sec in total

First Response

734 ms

Resources Loaded

2.8 sec

Page Rendered

117 ms

rainbowreefdivers.com screenshot

About Website

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

Short description of your site here.

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Key Findings

We analyzed Rainbowreefdivers.com page load time and found that the first response time was 734 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

rainbowreefdivers.com performance score

98

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.4 s

97/100

10%

LCP (Largest Contentful Paint)

Value1.5 s

100/100

25%

SI (Speed Index)

Value3.6 s

86/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.4 s

100/100

10%

Network Requests Diagram

rainbowreefdivers.com

734 ms

style.css

246 ms

SpryEffects.js

961 ms

mm_menu.js

726 ms

UTD.JPG

271 ms

Our browser made a total of 22 requests to load all elements on the main page. We found that all of those requests were addressed to Rainbowreefdivers.com and no external sources were called. The less responsive or slowest element that took the longest time to load (1.1 sec) belongs to the original domain Rainbowreefdivers.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 98.9 kB (56%)

Content Size

175.2 kB

After Optimization

76.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rainbowreefdivers.com main page is 175.2 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. Javascripts take 96.4 kB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 12.2 kB

  • Original 16.1 kB
  • After minification 15.3 kB
  • After compression 4.0 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. 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 12.2 kB or 75% of the original size.

Image Optimization

-0%

Potential reduce by 166 B

  • Original 58.3 kB
  • After minification 58.1 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. Rainbowreefdivers images are well optimized though.

JavaScript Optimization

-86%

Potential reduce by 83.0 kB

  • Original 96.4 kB
  • After minification 76.7 kB
  • After compression 13.3 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 83.0 kB or 86% of the original size.

CSS Optimization

-80%

Potential reduce by 3.5 kB

  • Original 4.4 kB
  • After minification 3.6 kB
  • After compression 901 B

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. Rainbowreefdivers.com needs all CSS files to be minified and compressed as it can save up to 3.5 kB or 80% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

20

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 20 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rainbowreefdivers. According to our analytics all requests are already optimized.

Network Requests Diagram

rainbowreefdivers.com

rainbowreefdivers.com

734 ms

style.css

style.css

246 ms

SpryEffects.js

SpryEffects.js

961 ms

mm_menu.js

mm_menu.js

726 ms

UTD.JPG

UTD.JPG

271 ms

Naui-logo_s.gif

Naui-logo_s.gif

259 ms

naui_tec_square.jpg

naui_tec_square.jpg

241 ms

iantd_logo.jpg

iantd_logo.jpg

714 ms

DAN_AP.jpg

DAN_AP.jpg

493 ms

sea_horse.jpg

sea_horse.jpg

494 ms

agir.jpg

agir.jpg

519 ms

diverite_logo_s.gif

diverite_logo_s.gif

514 ms

dive-xtras.gif

dive-xtras.gif

520 ms

gul-logo_s.gif

gul-logo_s.gif

745 ms

holilis.gif

holilis.gif

738 ms

oceanic.gif

oceanic.gif

750 ms

PoseidonLogo_s.gif

PoseidonLogo_s.gif

783 ms

main_photo.jpg

main_photo.jpg

756 ms

content_bg.gif

content_bg.gif

943 ms

RRD_header1.jpg

RRD_header1.jpg

969 ms

menu_bg.gif

menu_bg.gif

1050 ms

RRD_bar.jpg

RRD_bar.jpg

1139 ms

Accessibility Review

rainbowreefdivers.com accessibility score

61

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

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

rainbowreefdivers.com best practices score

67

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

General

Impact

Issue

High

Browser errors were logged to the console

SEO Factors

rainbowreefdivers.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

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rainbowreefdivers.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 Rainbowreefdivers.com main page’s claimed encoding is iso-8859-1. 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

rainbowreefdivers.com

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