4.9 sec in total
253 ms
4.4 sec
293 ms
Click here to check amazing Vietnamscuba Diving content. Otherwise, check out these important facts you probably never knew about vietnamscubadiving.com
Join us for a day of adventure and exploration at Cu Lao Cham (Cham Island), a protected marine park listed by UNESCO. With 135 species of corals and over 200 tropical fish species, the pretty coral r...
Visit vietnamscubadiving.comWe analyzed Vietnamscubadiving.com page load time and found that the first response time was 253 ms and then it took 4.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 70% of websites can load faster.
vietnamscubadiving.com performance score
name
value
score
weighting
Value7.9 s
0/100
10%
Value21.7 s
0/100
25%
Value10.9 s
6/100
10%
Value1,150 ms
22/100
30%
Value0.322
36/100
15%
Value13.8 s
10/100
10%
253 ms
2052 ms
190 ms
163 ms
159 ms
Our browser made a total of 94 requests to load all elements on the main page. We found that 77% of them (72 requests) were addressed to the original Vietnamscubadiving.com, 5% (5 requests) were made to Youtube.com and 3% (3 requests) were made to Tripadvisor.com. The less responsive or slowest element that took the longest time to load (2.1 sec) belongs to the original domain Vietnamscubadiving.com.
Page size can be reduced by 843.6 kB (38%)
2.2 MB
1.4 MB
In fact, the total size of Vietnamscubadiving.com main page is 2.2 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. 70% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.
Potential reduce by 26.4 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 26.4 kB or 78% of the original size.
Potential reduce by 327.0 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. Obviously, Vietnamscuba Diving needs image optimization as it can save up to 327.0 kB or 22% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.
Potential reduce by 199.1 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 199.1 kB or 59% of the original size.
Potential reduce by 291.2 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. Vietnamscubadiving.com needs all CSS files to be minified and compressed as it can save up to 291.2 kB or 83% of the original size.
Number of requests can be reduced by 43 (49%)
87
44
The browser has sent 87 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Vietnamscuba Diving. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 21 to 1 for JavaScripts and from 13 to 1 for CSS and as a result speed up the page load time.
vietnamscubadiving.com
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vietnamscubadiving.com accessibility score
Contrast
These are opportunities to improve the legibility of your content.
Impact
Issue
Background and foreground colors do not have a sufficient contrast ratio.
Navigation
These are opportunities to improve keyboard navigation in your application.
Impact
Issue
Heading elements are not in a sequentially-descending order
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
Image elements do not have [alt] attributes
Links do not have a discernible name
Best practices
These items highlight common accessibility best practices.
Impact
Issue
[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.
vietnamscubadiving.com best practices score
Trust and Safety
Impact
Issue
Does not use HTTPS
Includes front-end JavaScript libraries with known security vulnerabilities
Ensure CSP is effective against XSS attacks
User Experience
Impact
Issue
Serves images with low resolution
General
Impact
Issue
Detected JavaScript libraries
Issues were logged in the Issues panel in Chrome Devtools
vietnamscubadiving.com SEO score
Content Best Practices
Format your HTML in a way that enables crawlers to better understand your app’s content.
Impact
Issue
Links do not have descriptive text
Image elements do not have [alt] attributes
Crawling and Indexing
To appear in search results, crawlers need access to your app.
Impact
Issue
Links are not crawlable
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
Document uses legible font sizes
EN
EN
UTF-8
Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Vietnamscubadiving.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Vietnamscubadiving.com 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.
vietnamscubadiving.com
Open Graph description is not detected on the main page of Vietnamscuba Diving. 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: