Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 58% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 85

    SEO

    Google-friendlier than
    56% of websites

impactsubsea.co.uk

Impact Subsea - Innovative Underwater Sensors for ROV, AUV and other underwater applications

Page Load Speed

7.8 sec in total

First Response

203 ms

Resources Loaded

6.8 sec

Page Rendered

845 ms

impactsubsea.co.uk screenshot

About Website

Click here to check amazing Impact Subsea content. Otherwise, check out these important facts you probably never knew about impactsubsea.co.uk

Impact Subsea offers a portfolio of underwater sensors encompassing Sonars, Altimeters, Depth Sensors, Attitude & Heading Reference Systems, Flooded Member Detection Systems and bespoke Pressure Housi...

Visit impactsubsea.co.uk

Key Findings

We analyzed Impactsubsea.co.uk page load time and found that the first response time was 203 ms and then it took 7.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

impactsubsea.co.uk performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value9.5 s

0/100

10%

LCP (Largest Contentful Paint)

Value9.7 s

0/100

25%

SI (Speed Index)

Value20.2 s

0/100

10%

TBT (Total Blocking Time)

Value1,750 ms

10/100

30%

CLS (Cumulative Layout Shift)

Value0.042

99/100

15%

TTI (Time to Interactive)

Value19.9 s

2/100

10%

Network Requests Diagram

impactsubsea.co.uk

203 ms

www.impactsubsea.co.uk

499 ms

autoptimize_8125f59338cb65d41bdd96e5a77587b7.css

383 ms

css

34 ms

jquery.min.js

361 ms

Our browser made a total of 34 requests to load all elements on the main page. We found that 50% of them (17 requests) were addressed to the original Impactsubsea.co.uk, 26% (9 requests) were made to Fonts.gstatic.com and 9% (3 requests) were made to Client.crisp.chat. The less responsive or slowest element that took the longest time to load (859 ms) belongs to the original domain Impactsubsea.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 446.5 kB (37%)

Content Size

1.2 MB

After Optimization

753.1 kB

In fact, the total size of Impactsubsea.co.uk main page is 1.2 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. 60% of websites need less resources to load. Javascripts take 687.1 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 168.8 kB

  • Original 192.1 kB
  • After minification 191.9 kB
  • After compression 23.4 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 168.8 kB or 88% of the original size.

Image Optimization

-24%

Potential reduce by 4.0 kB

  • Original 16.5 kB
  • After minification 12.5 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, Impact Subsea needs image optimization as it can save up to 4.0 kB or 24% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-3%

Potential reduce by 23.3 kB

  • Original 687.1 kB
  • After minification 687.1 kB
  • After compression 663.9 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. This website has mostly compressed JavaScripts.

CSS Optimization

-82%

Potential reduce by 250.5 kB

  • Original 303.8 kB
  • After minification 67.2 kB
  • After compression 53.4 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. Impactsubsea.co.uk needs all CSS files to be minified and compressed as it can save up to 250.5 kB or 82% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (68%)

Requests Now

19

After Optimization

6

The browser has sent 19 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Impact Subsea. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

impactsubsea.co.uk accessibility score

84

Accessibility Issues

ARIA

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Impact

Issue

High

[aria-*] attributes do not match their roles

High

ARIA IDs are not unique

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

Links do not have a discernible name

Best Practices

impactsubsea.co.uk best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

impactsubsea.co.uk SEO score

85

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

Crawling and Indexing

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

Impact

Issue

High

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

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 Impactsubsea.co.uk 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 Impactsubsea.co.uk 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

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