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cvoptics.co.uk screenshot

Report Summary

  • 42

    Performance

    Renders faster than
    61% of other websites

  • 92

    Accessibility

    Visual factors better than
    that of 78% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 98

    SEO

    Google-friendlier than
    92% of websites

cvoptics.co.uk

Coloured contact lenses, Non Prescription, Fashion contact lenses

Page Load Speed

3.3 sec in total

First Response

263 ms

Resources Loaded

2.8 sec

Page Rendered

212 ms

cvoptics.co.uk screenshot

About Website

Welcome to cvoptics.co.uk homepage info - get ready to check Cvoptics best content for United Kingdom right away, or after learning these important things about cvoptics.co.uk

Coloured contact lenses from the UK's leading online store. 1000's of designs, both natural, and fashion lenses with FREE UK and International shipping.

Visit cvoptics.co.uk

Key Findings

We analyzed Cvoptics.co.uk page load time and found that the first response time was 263 ms and then it took 3 sec to load all DOM resources and completely render a web page. This is a poor result, as 55% of websites can load faster.

Performance Metrics

cvoptics.co.uk performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.6 s

0/100

10%

LCP (Largest Contentful Paint)

Value8.7 s

1/100

25%

SI (Speed Index)

Value10.2 s

8/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.234

53/100

15%

TTI (Time to Interactive)

Value9.0 s

33/100

10%

Network Requests Diagram

cvoptics.co.uk

263 ms

www.cvoptics.co.uk

838 ms

styles.css

159 ms

madisonisland.css

229 ms

amshopby.css

230 ms

Our browser made a total of 73 requests to load all elements on the main page. We found that 89% of them (65 requests) were addressed to the original Cvoptics.co.uk, 7% (5 requests) were made to Fonts.gstatic.com and 3% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (838 ms) belongs to the original domain Cvoptics.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 54.2 kB (22%)

Content Size

246.1 kB

After Optimization

191.9 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Cvoptics.co.uk main page is 246.1 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. 45% of websites need less resources to load. Images take 168.7 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 53.7 kB

  • Original 60.2 kB
  • After minification 46.4 kB
  • After compression 6.5 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. This page needs HTML code to be minified as it can gain 13.8 kB, which is 23% 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 53.7 kB or 89% of the original size.

Image Optimization

-0%

Potential reduce by 445 B

  • Original 168.7 kB
  • After minification 168.3 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. Cvoptics images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 34 B

  • Original 17.2 kB
  • After minification 17.2 kB
  • After compression 17.1 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.

Requests Breakdown

Number of requests can be reduced by 37 (56%)

Requests Now

66

After Optimization

29

  • Images
  • JavaScript
  • CSS

The browser has sent 66 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cvoptics. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 29 to 1 for JavaScripts and from 10 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

cvoptics.co.uk

cvoptics.co.uk

263 ms

www.cvoptics.co.uk

www.cvoptics.co.uk

838 ms

styles.css

styles.css

159 ms

madisonisland.css

madisonisland.css

229 ms

amshopby.css

amshopby.css

230 ms

easyslide.css

easyslide.css

238 ms

nivo-slider.css

nivo-slider.css

235 ms

bar.css

bar.css

236 ms

dark.css

dark.css

237 ms

default.css

default.css

304 ms

light.css

light.css

306 ms

prototype.js

prototype.js

474 ms

jquery-1.10.2.min.js

jquery-1.10.2.min.js

393 ms

noconflict.js

noconflict.js

314 ms

ccard.js

ccard.js

311 ms

validation.js

validation.js

380 ms

builder.js

builder.js

382 ms

effects.js

effects.js

388 ms

dragdrop.js

dragdrop.js

392 ms

controls.js

controls.js

458 ms

slider.js

slider.js

457 ms

js.js

js.js

466 ms

form.js

form.js

470 ms

translate.js

translate.js

470 ms

cookies.js

cookies.js

533 ms

modernizr.custom.min.js

modernizr.custom.min.js

534 ms

selectivizr.js

selectivizr.js

543 ms

matchMedia.js

matchMedia.js

547 ms

matchMedia.addListener.js

matchMedia.addListener.js

548 ms

enquire.js

enquire.js

549 ms

app.js

app.js

609 ms

jquery.cycle2.min.js

jquery.cycle2.min.js

612 ms

jquery.cycle2.swipe.min.js

jquery.cycle2.swipe.min.js

619 ms

slideshow.js

slideshow.js

624 ms

imagesloaded.js

imagesloaded.js

626 ms

minicart.js

minicart.js

625 ms

easyslide.js

easyslide.js

684 ms

css

css

31 ms

jquery-1.8.2.min.js

jquery-1.8.2.min.js

769 ms

jquery.nivo.slider.js

jquery.nivo.slider.js

537 ms

ga.js

ga.js

19 ms

__utm.gif

__utm.gif

12 ms

icon_sprite.png

icon_sprite.png

171 ms

logo.png

logo.png

154 ms

logo.gif

logo.gif

171 ms

3e69_1.jpg

3e69_1.jpg

152 ms

9a09_1.jpg

9a09_1.jpg

170 ms

dolphin.jpg

dolphin.jpg

170 ms

8_ball.jpg

8_ball.jpg

232 ms

08ff_1.jpg

08ff_1.jpg

229 ms

3af3_1.jpg

3af3_1.jpg

230 ms

sam_0156_934x900.jpg

sam_0156_934x900.jpg

232 ms

sam_0158_930x900.jpg

sam_0158_930x900.jpg

232 ms

blue.jpg

blue.jpg

229 ms

sam_0154_902x900.jpg

sam_0154_902x900.jpg

305 ms

sam_0148_930x900.jpg

sam_0148_930x900.jpg

308 ms

sam_0150_934x900.jpg

sam_0150_934x900.jpg

307 ms

_kgrhqr_jye4n7g_c-vbomr6cv4iw_0_12.jpg

_kgrhqr_jye4n7g_c-vbomr6cv4iw_0_12.jpg

308 ms

_kgrhqj_i4e4qckrvttbomoqkqgew_0_12.jpg

_kgrhqj_i4e4qckrvttbomoqkqgew_0_12.jpg

308 ms

_kgrhqmoko4e4kcz6gt6bomotffh-g_0_12.jpg

_kgrhqmoko4e4kcz6gt6bomotffh-g_0_12.jpg

309 ms

_kgrhqiokige4od6kcyzbomrkv08qw_0_12.jpg

_kgrhqiokige4od6kcyzbomrkv08qw_0_12.jpg

382 ms

_kgrhqf_l8e4u8dco3bbomr4tcjkg_0_12.jpg

_kgrhqf_l8e4u8dco3bbomr4tcjkg_0_12.jpg

383 ms

_kgrhqn_lse4mrvs_igbomrrns4g_0_12.jpg

_kgrhqn_lse4mrvs_igbomrrns4g_0_12.jpg

385 ms

facebook.gif

facebook.gif

387 ms

twitter.gif

twitter.gif

386 ms

youtube.gif

youtube.gif

386 ms

payment-methods.png

payment-methods.png

456 ms

opc-ajax-loader.gif

opc-ajax-loader.gif

438 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvaorCIPrQ.ttf

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvaorCIPrQ.ttf

28 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvoorCIPrQ.ttf

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVvoorCIPrQ.ttf

48 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVuEorCIPrQ.ttf

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVuEorCIPrQ.ttf

123 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpbCIPrQ.ttf

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVsEpbCIPrQ.ttf

141 ms

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pbCIPrQ.ttf

1Ptxg8zYS_SKggPN4iEgvnHyvveLxVs9pbCIPrQ.ttf

141 ms

Accessibility Review

cvoptics.co.uk accessibility score

92

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.

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

cvoptics.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

High

Browser errors were logged to the console

SEO Factors

cvoptics.co.uk SEO score

98

Search Engine Optimization Advices

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 Cvoptics.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 Cvoptics.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

cvoptics.co.uk

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