Access istdivingsystem.com. IST Diving System | Quality wholesale diving equipment

name

value

score

weighting

FCP (First Contentful Paint)

Value16.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value24.7 s

0/100

25%

SI (Speed Index)

Value20.5 s

0/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0.179

67/100

15%

TTI (Time to Interactive)

Value22.5 s

1/100

10%

istdivingsystem.com

202 ms

home.php

863 ms

common.js

143 ms

browser_identificator.js

205 ms

swfobject-min.js

206 ms

Our browser made a total of 135 requests to load all elements on the main page. We found that 99% of them (133 requests) were addressed to the original Istdivingsystem.com, 1% (1 request) were made to S3.amazonaws.com and 1% (1 request) were made to Js.hs-scripts.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Istdivingsystem.com.

Content Size

11.0 MB

After Optimization

9.4 MB

In fact, the total size of Istdivingsystem.com main page is 11.0 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 9.3 MB which makes up the majority of the site volume.

HTML Optimization

-85%

Potential reduce by 107.4 kB

Original 126.3 kB
After minification 105.3 kB
After compression 18.9 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 21.0 kB, which is 17% 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 107.4 kB or 85% of the original size.

Image Optimization

-3%

Potential reduce by 284.0 kB

Original 9.3 MB
After minification 9.0 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. IST Diving System images are well optimized though.

JavaScript Optimization

-74%

Potential reduce by 781.7 kB

Original 1.1 MB
After minification 972.7 kB
After compression 279.6 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 781.7 kB or 74% of the original size.

CSS Optimization

-84%

Potential reduce by 438.2 kB

Original 524.5 kB
After minification 433.1 kB
After compression 86.3 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. Istdivingsystem.com needs all CSS files to be minified and compressed as it can save up to 438.2 kB or 84% of the original size.

Requests Now

126

After Optimization

The browser has sent 126 CSS, Javascripts, AJAX and image requests in order to completely render the main page of IST Diving System. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 28 to 1 for JavaScripts and from 46 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

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 keyboard navigation in your application.

High

Heading elements are not in a sequentially-descending order

High

Some elements have a [tabindex] value greater than 0

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

Links do not have a discernible name

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

Low

Detected JavaScript libraries

High

Browser errors were logged to the console

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

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

High

Tap targets are not sized appropriately

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 Istdivingsystem.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 Istdivingsystem.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.

Social Sharing Optimization

istdivingsystem.com

Open Graph description is not detected on the main page of IST Diving System. 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:

Report Summary

Performance

Accessibility

Best Practices

SEO

IST Diving System | Quality wholesale diving equipment

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

istdivingsystem.com

home.php

common.js

browser_identificator.js

swfobject-min.js

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

istdivingsystem.com

home.php

common.js

browser_identificator.js

swfobject-min.js

jquery.min.js

bootstrap.min.js

jquery-min.js

css_loader.js

jquery-migrate.production.js

jquery-ui.custom.min.js

jquery-ui.structure.min.css

tabs.min.css

jquery-ui.theme.min.css

jquery_ui.css

ajax.js

jquery.cluetip.js

top_message.js

popup_open.js

jquery.blockUI.min.js

jquery.blockUI.defaults.js

jquery_cookie.js

tooltip.min.js

tooltip.min.css

product_notification_widget.js

func.js

check_quantity.js

product_added.js

jquery.nouislider.all.js

swiper.min.js

parallaxImg.js

main-jquery.js

jquery.cluetip.css

font-awesome.min.css

main.css

main.css

main.css

mc-validate.js

4657107.js

main.css

main.css

main.css

main.css