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opticalvision.co.uk screenshot

Report Summary

  • 54

    Performance

    Renders faster than
    71% of other websites

  • 98

    Accessibility

    Visual factors better than
    that of 94% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 64

    SEO

    Google-friendlier than
    24% of websites

opticalvision.co.uk

Stargazing Telescopes, Binoculars, Spotting Scopes, Microscopes by OVL - Optical Vision Ltd

Page Load Speed

2.8 sec in total

First Response

533 ms

Resources Loaded

1.9 sec

Page Rendered

337 ms

opticalvision.co.uk screenshot

About Website

Welcome to opticalvision.co.uk homepage info - get ready to check Optical Vision best content for Germany right away, or after learning these important things about opticalvision.co.uk

Description

Visit opticalvision.co.uk

Key Findings

We analyzed Opticalvision.co.uk page load time and found that the first response time was 533 ms and then it took 2.2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 45% of websites can load faster.

Performance Metrics

opticalvision.co.uk performance score

54

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

32/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value4.3 s

76/100

10%

TBT (Total Blocking Time)

Value340 ms

74/100

30%

CLS (Cumulative Layout Shift)

Value0.073

96/100

15%

TTI (Time to Interactive)

Value5.6 s

70/100

10%

Network Requests Diagram

www.opticalvision.co.uk

533 ms

eec920611d94a32f087f9c9a5e3efc6f.ovl_2018a.css.php

95 ms

dae9357400e049f839d1e3b20333f334.jquery.js.php

283 ms

b9486148fab0f4b573fdbb9a8e7de1b2.jqueryui.js.php

388 ms

133570d0d6f1ab0c0c07bec82840d04a.ovl_2018a.functions.js.php

321 ms

Our browser made a total of 37 requests to load all elements on the main page. We found that 84% of them (31 requests) were addressed to the original Opticalvision.co.uk, 5% (2 requests) were made to Googletagmanager.com and 5% (2 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (533 ms) belongs to the original domain Opticalvision.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 288.3 kB (17%)

Content Size

1.7 MB

After Optimization

1.4 MB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Opticalvision.co.uk main page is 1.7 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. 40% of websites need less resources to load. Images take 1.5 MB which makes up the majority of the site volume.

HTML Optimization

-80%

Potential reduce by 37.1 kB

  • Original 46.5 kB
  • After minification 46.1 kB
  • After compression 9.5 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 37.1 kB or 80% of the original size.

Image Optimization

-14%

Potential reduce by 208.7 kB

  • Original 1.5 MB
  • After minification 1.3 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, Optical Vision needs image optimization as it can save up to 208.7 kB or 14% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-28%

Potential reduce by 42.5 kB

  • Original 149.2 kB
  • After minification 149.2 kB
  • After compression 106.7 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 42.5 kB or 28% of the original size.

Requests Breakdown

Number of requests can be reduced by 7 (21%)

Requests Now

33

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 33 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical Vision. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 8 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.opticalvision.co.uk

www.opticalvision.co.uk

533 ms

eec920611d94a32f087f9c9a5e3efc6f.ovl_2018a.css.php

eec920611d94a32f087f9c9a5e3efc6f.ovl_2018a.css.php

95 ms

dae9357400e049f839d1e3b20333f334.jquery.js.php

dae9357400e049f839d1e3b20333f334.jquery.js.php

283 ms

b9486148fab0f4b573fdbb9a8e7de1b2.jqueryui.js.php

b9486148fab0f4b573fdbb9a8e7de1b2.jqueryui.js.php

388 ms

133570d0d6f1ab0c0c07bec82840d04a.ovl_2018a.functions.js.php

133570d0d6f1ab0c0c07bec82840d04a.ovl_2018a.functions.js.php

321 ms

df28e606b4c989852ce76b8e80b81012.menu.js.php

df28e606b4c989852ce76b8e80b81012.menu.js.php

239 ms

js

js

63 ms

cookieconsent.min.css

cookieconsent.min.css

29 ms

cookieconsent.min.js

cookieconsent.min.js

41 ms

background-960.gif

background-960.gif

234 ms

Evolux%2062ED%20&%2082ED.jpg

Evolux%2062ED%20&%2082ED.jpg

382 ms

js

js

49 ms

analytics.js

analytics.js

42 ms

PRONTO%20HEAD%20%2020329%20main1.jpg

PRONTO%20HEAD%20%2020329%20main1.jpg

102 ms

spacerv.gif

spacerv.gif

94 ms

EQ-AL55i%20Extension%20tube%20200mm%20Height.jpg

EQ-AL55i%20Extension%20tube%20200mm%20Height.jpg

95 ms

EQ-AL55i%20MAIN.jpg

EQ-AL55i%20MAIN.jpg

158 ms

ERECTING%20PRISM%2020378%20AMICI%20copy.jpg

ERECTING%20PRISM%2020378%20AMICI%20copy.jpg

171 ms

10949-20448A.jpg

10949-20448A.jpg

168 ms

STELLAR-11%2016X80%20&%2020X80.jpg

STELLAR-11%2016X80%20&%2020X80.jpg

170 ms

STAR%20DISCOVERY%20WI-FI%20MOUNT%20CROPPED.jpg

STAR%20DISCOVERY%20WI-FI%20MOUNT%20CROPPED.jpg

180 ms

Skywatcher_10260_Explorer_AZ5.jpg

Skywatcher_10260_Explorer_AZ5.jpg

242 ms

ovl_header_background_2020a.jpg

ovl_header_background_2020a.jpg

399 ms

ovl_top_nav_background.png

ovl_top_nav_background.png

253 ms

ovl_logo_2020.png

ovl_logo_2020.png

328 ms

brand_logo_skywatcher.jpg

brand_logo_skywatcher.jpg

263 ms

brand_logo_helios.jpg

brand_logo_helios.jpg

325 ms

brand_logo_acuter.jpg

brand_logo_acuter.jpg

337 ms

brand_logo_first.jpg

brand_logo_first.jpg

347 ms

brand_logo_zenith.jpg

brand_logo_zenith.jpg

400 ms

brand_logo_barr_&_stroud.jpg

brand_logo_barr_&_stroud.jpg

408 ms

brand_logo_fotomate.jpg

brand_logo_fotomate.jpg

411 ms

ovl_navigation_background.png

ovl_navigation_background.png

420 ms

OpenSans-Regular-webfont.woff

OpenSans-Regular-webfont.woff

429 ms

OpenSans-Semibold-webfont.woff

OpenSans-Semibold-webfont.woff

480 ms

Blueparker-071122.woff

Blueparker-071122.woff

486 ms

collect

collect

69 ms

Accessibility Review

opticalvision.co.uk accessibility score

98

Accessibility Issues

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.

Best Practices

opticalvision.co.uk best practices score

67

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

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

opticalvision.co.uk SEO score

64

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

Language and Encoding

  • Language Detected

    EN

  • Language Claimed

    EN

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Opticalvision.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 Opticalvision.co.uk main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

opticalvision.co.uk

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