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name

value

score

weighting

FCP (First Contentful Paint)

Value4.8 s

11/100

10%

LCP (Largest Contentful Paint)

Value12.6 s

0/100

25%

SI (Speed Index)

Value9.8 s

10/100

10%

TBT (Total Blocking Time)

Value540 ms

55/100

30%

CLS (Cumulative Layout Shift)

Value0.156

74/100

15%

TTI (Time to Interactive)

Value8.7 s

36/100

10%

acquasub.it

419 ms

www.acquasub.it

335 ms

www.acquasub.it

2156 ms

bootstrap.min.css

484 ms

bootstrapXL.css

493 ms

Our browser made a total of 131 requests to load all elements on the main page. We found that 97% of them (127 requests) were addressed to the original Acquasub.it, 2% (2 requests) were made to Fonts.googleapis.com and 2% (2 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.2 sec) belongs to the original domain Acquasub.it.

Content Size

3.8 MB

After Optimization

2.7 MB

In fact, the total size of Acquasub.it main page is 3.8 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. Images take 2.5 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 128.2 kB

Original 148.2 kB
After minification 127.5 kB
After compression 20.0 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. This page needs HTML code to be minified as it can gain 20.7 kB, which is 14% 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 128.2 kB or 87% of the original size.

Image Optimization

-5%

Potential reduce by 123.4 kB

Original 2.5 MB
After minification 2.4 MB

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. Acquasub images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 527.2 kB

Original 729.5 kB
After minification 724.3 kB
After compression 202.3 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 527.2 kB or 72% of the original size.

CSS Optimization

-85%

Potential reduce by 358.5 kB

Original 424.2 kB
After minification 376.4 kB
After compression 65.7 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. Acquasub.it needs all CSS files to be minified and compressed as it can save up to 358.5 kB or 85% of the original size.

Requests Now

124

After Optimization

The browser has sent 124 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Acquasub. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 19 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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.

High

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Form elements do not have associated labels

High

Links do not have a discernible name

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Page has valid source maps

Search Engine Optimization Advices

Format your HTML in a way that enables crawlers to better understand your app’s content.

High

Links do not have descriptive text

High

Image elements do not have [alt] attributes

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

Language and Encoding

Language Detected

EN
Language Claimed

EN
Encoding

UTF-8

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

acquasub.it

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

Report Summary

Performance

Accessibility

Best Practices

SEO

dive equipment regolator dive computer scuba shop wetsuit diving watches fins gav jaket padi bcd Welcome on Acquasub

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

acquasub.it

www.acquasub.it

www.acquasub.it

bootstrap.min.css

bootstrapXL.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

acquasub.it

www.acquasub.it

www.acquasub.it

bootstrap.min.css

bootstrapXL.css

font-awesome.min.css

jquery-ui.min.css

jquery.fancybox.min.css

owl.carousel.min.css

owl.theme.default.min.css

masterslider.css

style.css

jquery.mCustomScrollbar.css

animate.min.css

stile.css

stileMenuDrop.css

sidebar.css

styleCercaADV.css

modernizr-2.6.2-respond-1.1.0.min.js

popupConsent.css

Phone.png

LogoTop.png

flag_en.png

LogoStampa.png

blank.gif

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1111_camu3d_m.gif

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6003_attrzzi_multiuso_mares_mx9j_m.jpg

6087_action_cam_becam_f2ds_m.jpg

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5100_giotto_bianco_1_m.jpg

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jquery.min.js

jquery-ui.min.js

jquery.easing-1.3.min.js

bootstrap.min.js

jquery.mCustomScrollbar.concat.min.js