Tools & Wizards About Us
opticalvision.co.uk screenshot

Report Summary

  • 62

    Performance

    Renders faster than
    77% of other websites

  • 95

    Accessibility

    Visual factors better than
    that of 87% 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 sec in total

First Response

345 ms

Resources Loaded

1.5 sec

Page Rendered

211 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 345 ms and then it took 1.7 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

opticalvision.co.uk performance score

62

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.7 s

29/100

10%

LCP (Largest Contentful Paint)

Value13.5 s

0/100

25%

SI (Speed Index)

Value4.4 s

74/100

10%

TBT (Total Blocking Time)

Value20 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.099

90/100

15%

TTI (Time to Interactive)

Value4.3 s

85/100

10%

Network Requests Diagram

www.opticalvision.co.uk

345 ms

a567ddcf171a744ce4204d6c37e99a18.ovl_2015a.css.php

96 ms

jquery-1.7.2.min.js.php

245 ms

jquery-ui-1.8.24.custom.min.js.php

329 ms

ce5ad62d4a15510a648fc91ad731c410.ovl_2015a.functions.js.php

255 ms

Our browser made a total of 33 requests to load all elements on the main page. We found that 94% of them (31 requests) were addressed to the original Opticalvision.co.uk, 6% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (421 ms) belongs to the original domain Opticalvision.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 448.2 kB (53%)

Content Size

849.6 kB

After Optimization

401.4 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opticalvision.co.uk main page is 849.6 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Javascripts take 458.4 kB which makes up the majority of the site volume.

HTML Optimization

-81%

Potential reduce by 35.3 kB

  • Original 43.7 kB
  • After minification 43.4 kB
  • After compression 8.4 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 35.3 kB or 81% of the original size.

Image Optimization

-9%

Potential reduce by 23.3 kB

  • Original 270.8 kB
  • After minification 247.6 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. Optical Vision images are well optimized though.

JavaScript Optimization

-70%

Potential reduce by 322.6 kB

  • Original 458.4 kB
  • After minification 446.3 kB
  • After compression 135.7 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 322.6 kB or 70% of the original size.

CSS Optimization

-87%

Potential reduce by 67.0 kB

  • Original 76.7 kB
  • After minification 61.2 kB
  • After compression 9.7 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. Opticalvision.co.uk needs all CSS files to be minified and compressed as it can save up to 67.0 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 4 (14%)

Requests Now

29

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 29 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 5 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

345 ms

a567ddcf171a744ce4204d6c37e99a18.ovl_2015a.css.php

a567ddcf171a744ce4204d6c37e99a18.ovl_2015a.css.php

96 ms

jquery-1.7.2.min.js.php

jquery-1.7.2.min.js.php

245 ms

jquery-ui-1.8.24.custom.min.js.php

jquery-ui-1.8.24.custom.min.js.php

329 ms

ce5ad62d4a15510a648fc91ad731c410.ovl_2015a.functions.js.php

ce5ad62d4a15510a648fc91ad731c410.ovl_2015a.functions.js.php

255 ms

213cd2df7ee7a7a09659a3dd7e069261.menu.js.php

213cd2df7ee7a7a09659a3dd7e069261.menu.js.php

165 ms

background-960.gif

background-960.gif

171 ms

ga.js

ga.js

47 ms

banner_star_adventurer.jpg

banner_star_adventurer.jpg

318 ms

MISTRAL%20WP6%208x32%20&%2010x32%20UPRIGHT.jpg

MISTRAL%20WP6%208x32%20&%2010x32%20UPRIGHT.jpg

86 ms

spacerv.gif

spacerv.gif

88 ms

MISTRAL%20WP6%208x42,%2010x42%20&%2012x42%20UPRIGHT.jpg

MISTRAL%20WP6%208x42,%2010x42%20&%2012x42%20UPRIGHT.jpg

95 ms

MISTRAL%20WP6%2010x50ED.jpg

MISTRAL%20WP6%2010x50ED.jpg

88 ms

Quattro-12%20STEEL%20(3).jpg

Quattro-12%20STEEL%20(3).jpg

93 ms

774.jpg

774.jpg

176 ms

Quantum%205.2%20pic1.jpg

Quantum%205.2%20pic1.jpg

171 ms

16.jpg

16.jpg

180 ms

40917.jpg

40917.jpg

178 ms

ovl_header_background.jpg

ovl_header_background.jpg

332 ms

ovl_top_nav_background.png

ovl_top_nav_background.png

255 ms

ovl_logo.png

ovl_logo.png

261 ms

brand_logo_skywatcher.jpg

brand_logo_skywatcher.jpg

263 ms

brand_logo_helios.jpg

brand_logo_helios.jpg

264 ms

brand_logo_acuter.jpg

brand_logo_acuter.jpg

340 ms

brand_logo_first.jpg

brand_logo_first.jpg

345 ms

brand_logo_zenith.jpg

brand_logo_zenith.jpg

347 ms

brand_logo_barr_&_stroud.jpg

brand_logo_barr_&_stroud.jpg

347 ms

brand_logo_fotomate.jpg

brand_logo_fotomate.jpg

382 ms

ovl_navigation_background.png

ovl_navigation_background.png

416 ms

OpenSans-Regular-webfont.woff

OpenSans-Regular-webfont.woff

401 ms

OpenSans-Semibold-webfont.woff

OpenSans-Semibold-webfont.woff

406 ms

Blueparker-020614.woff

Blueparker-020614.woff

421 ms

__utm.gif

__utm.gif

28 ms

Accessibility Review

opticalvision.co.uk accessibility score

95

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.

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

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

    N/A

  • 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 neither this language nor any other was claimed in <html> or <meta> tags. 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: