Tools & Wizards About Us

Report Summary

  • 23

    Performance

    Renders faster than
    42% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 69% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 74

    SEO

    Google-friendlier than
    32% of websites

undercurrent.org

Scuba Diving Magazine, Undercurrent Reviews Liveaboards, Dive Resorts & Dive Gear

Page Load Speed

2.9 sec in total

First Response

139 ms

Resources Loaded

2.5 sec

Page Rendered

228 ms

About Website

Click here to check amazing Undercurrent content for United States. Otherwise, check out these important facts you probably never knew about undercurrent.org

Since 1975, Undercurrent, 'the Consumer Reports of diving' by Business Week, provides authoritative, unbiased reviews of liveaboards, dive resorts, and dive gear.

Visit undercurrent.org

Key Findings

We analyzed Undercurrent.org page load time and found that the first response time was 139 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

undercurrent.org performance score

23

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.7 s

12/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value2,110 ms

7/100

30%

CLS (Cumulative Layout Shift)

Value0.047

99/100

15%

TTI (Time to Interactive)

Value13.7 s

11/100

10%

Network Requests Diagram

undercurrent.org

139 ms

undercurrent.org

140 ms

www.undercurrent.org

380 ms

js

63 ms

optimize.js

162 ms

Our browser made a total of 91 requests to load all elements on the main page. We found that 40% of them (36 requests) were addressed to the original Undercurrent.org, 10% (9 requests) were made to Tpc.googlesyndication.com and 9% (8 requests) were made to Pagead2.googlesyndication.com. The less responsive or slowest element that took the longest time to load (713 ms) relates to the external source App.3ng.io.

Page Optimization Overview & Recommendations

Page size can be reduced by 457.6 kB (32%)

Content Size

1.4 MB

After Optimization

980.1 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Undercurrent.org main page is 1.4 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 65% of websites need less resources to load. Javascripts take 1.0 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 78.9 kB

  • Original 99.6 kB
  • After minification 84.7 kB
  • After compression 20.7 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 14.9 kB, which is 15% 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 78.9 kB or 79% of the original size.

Image Optimization

-10%

Potential reduce by 28.8 kB

  • Original 288.7 kB
  • After minification 259.8 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. Undercurrent images are well optimized though.

JavaScript Optimization

-34%

Potential reduce by 347.8 kB

  • Original 1.0 MB
  • After minification 1.0 MB
  • After compression 680.5 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 347.8 kB or 34% of the original size.

CSS Optimization

-9%

Potential reduce by 2.0 kB

  • Original 21.2 kB
  • After minification 21.2 kB
  • After compression 19.2 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. Undercurrent.org has all CSS files already compressed.

Requests Breakdown

Number of requests can be reduced by 43 (51%)

Requests Now

84

After Optimization

41

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 84 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Undercurrent. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 9 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

undercurrent.org accessibility score

88

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.

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

undercurrent.org best practices score

67

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

High

Page has valid source maps

SEO Factors

undercurrent.org SEO score

74

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

Links do not have descriptive text

High

Image elements do not have [alt] attributes

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

robots.txt is not valid

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

High

Tap targets are not sized appropriately

Language and Encoding

  • Language Detected

    N/A

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Undercurrent.org can be misinterpreted by Google and other search engines. Unfortunately we cannot identify language used on the page (probably there is a mix of languages, too little text or something else), while the claimed language is English. Our system also found out that Undercurrent.org 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

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