Tools & Wizards About Us
sonavision.co.uk screenshot

Report Summary

  • 74

    Performance

    Renders faster than
    83% of other websites

  • 58

    Accessibility

    Visual factors better than
    that of 25% of websites

  • 58

    Best Practices

    More advanced features
    available than in
    20% of websites

  • 75

    SEO

    Google-friendlier than
    32% of websites

sonavision.co.uk

Sonavision | Seabed Mapping, Scanning Sonars, ROV Sensors, Underwater Acoustic Communications and Video Systems

Page Load Speed

6.5 sec in total

First Response

2.5 sec

Resources Loaded

3.8 sec

Page Rendered

248 ms

sonavision.co.uk screenshot

About Website

Visit sonavision.co.uk now to see the best up-to-date Sonavision content and also check out these interesting facts you probably never knew about sonavision.co.uk

Sonavision are world leaders in the fields of seabed mapping, imaging sonar and acoustic communications and specialise in design, development and production of acoustic sonar and video technologies fo...

Visit sonavision.co.uk

Key Findings

We analyzed Sonavision.co.uk page load time and found that the first response time was 2.5 sec and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

sonavision.co.uk performance score

74

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

79/100

10%

LCP (Largest Contentful Paint)

Value5.7 s

16/100

25%

SI (Speed Index)

Value4.7 s

70/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value2.2 s

99/100

10%

Network Requests Diagram

sonavision.co.uk

2521 ms

sonavision.css

242 ms

brand

8 ms

jquery-1.3.2.js

431 ms

homepageslideshow.js

234 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 84% of them (36 requests) were addressed to the original Sonavision.co.uk, 7% (3 requests) were made to Google.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2.5 sec) belongs to the original domain Sonavision.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 234.4 kB (18%)

Content Size

1.3 MB

After Optimization

1.1 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Sonavision.co.uk main page is 1.3 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. 20% of websites need less resources to load. Images take 1.2 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 11.6 kB

  • Original 15.6 kB
  • After minification 12.6 kB
  • After compression 3.9 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 3.0 kB, which is 19% 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 11.6 kB or 75% of the original size.

Image Optimization

-13%

Potential reduce by 148.5 kB

  • Original 1.2 MB
  • After minification 1.0 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. Obviously, Sonavision needs image optimization as it can save up to 148.5 kB or 13% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-48%

Potential reduce by 39.5 kB

  • Original 82.5 kB
  • After minification 81.8 kB
  • After compression 43.0 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 39.5 kB or 48% of the original size.

CSS Optimization

-90%

Potential reduce by 34.8 kB

  • Original 38.6 kB
  • After minification 26.3 kB
  • After compression 3.8 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. Sonavision.co.uk needs all CSS files to be minified and compressed as it can save up to 34.8 kB or 90% of the original size.

Requests Breakdown

Number of requests can be reduced by 13 (33%)

Requests Now

39

After Optimization

26

  • Images
  • JavaScript
  • CSS

The browser has sent 39 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Sonavision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

sonavision.co.uk

sonavision.co.uk

2521 ms

sonavision.css

sonavision.css

242 ms

brand

brand

8 ms

jquery-1.3.2.js

jquery-1.3.2.js

431 ms

homepageslideshow.js

homepageslideshow.js

234 ms

btn_search.gif

btn_search.gif

189 ms

brandjs.js

brandjs.js

19 ms

bg_body_rep.gif

bg_body_rep.gif

103 ms

bg_body_top.gif

bg_body_top.gif

308 ms

bg_header_overlay.png

bg_header_overlay.png

361 ms

bg_nav.gif

bg_nav.gif

194 ms

bg_nav_sep.gif

bg_nav_sep.gif

185 ms

bg_nav_over.gif

bg_nav_over.gif

215 ms

header21.jpg

header21.jpg

374 ms

bg_content_top_left_col.jpg

bg_content_top_left_col.jpg

287 ms

bg_h4_l_blue.gif

bg_h4_l_blue.gif

289 ms

Swath%20fo%20web.jpg

Swath%20fo%20web.jpg

343 ms

bg_products_tile.png

bg_products_tile.png

527 ms

SV2020b.jpg

SV2020b.jpg

517 ms

through-water-comms.jpg

through-water-comms.jpg

409 ms

hermes01_thumb.jpg

hermes01_thumb.jpg

469 ms

hawkeye01_thumb.jpg

hawkeye01_thumb.jpg

463 ms

nopic.jpg

nopic.jpg

473 ms

bg_tabs.gif

bg_tabs.gif

499 ms

hp-slide-defence.jpg

hp-slide-defence.jpg

593 ms

hp-slide-oil.jpg

hp-slide-oil.jpg

658 ms

hp-slide-fishing.jpg

hp-slide-fishing.jpg

592 ms

hp-slide-survey.jpg

hp-slide-survey.jpg

638 ms

Subcom%20Bell%20Internal%20Unit.jpg

Subcom%20Bell%20Internal%20Unit.jpg

752 ms

btn_signup.gif

btn_signup.gif

629 ms

OSEA2022.jpg

OSEA2022.jpg

807 ms

bg_news_img.jpg

bg_news_img.jpg

696 ms

SubseaExpo2022%20(2).jpg

SubseaExpo2022%20(2).jpg

983 ms

2020%20SUBSEA%20EXPO%20ABERDEEN%20V1.jpg

2020%20SUBSEA%20EXPO%20ABERDEEN%20V1.jpg

984 ms

bg_footer_top_rep.jpg

bg_footer_top_rep.jpg

758 ms

bg_footer_bottom.jpg

bg_footer_bottom.jpg

794 ms

icon_twitter.gif

icon_twitter.gif

845 ms

icon_facebook.gif

icon_facebook.gif

849 ms

branding.png

branding.png

19 ms

ga.js

ga.js

7 ms

__utm.gif

__utm.gif

12 ms

collect

collect

28 ms

ga-audiences

ga-audiences

14 ms

Accessibility Review

sonavision.co.uk accessibility score

58

Accessibility Issues

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

<input type="image"> elements do not have [alt] text

High

Form elements do not have associated labels

High

Links do not have a discernible name

Best Practices

sonavision.co.uk best practices score

58

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

Displays images with incorrect aspect ratio

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

sonavision.co.uk SEO score

75

Search Engine Optimization Advices

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Sonavision.co.uk can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Sonavision.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

sonavision.co.uk

Open Graph description is not detected on the main page of Sonavision. 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: