Tools & Wizards About Us
opticalexpress.nl screenshot

Report Summary

  • 20

    Performance

    Renders faster than
    37% of other websites

  • 75

    Accessibility

    Visual factors better than
    that of 41% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 74

    SEO

    Google-friendlier than
    31% of websites

opticalexpress.nl

Leading Laser Eye Surgery & Optical Specialists | Optical Express

Page Load Speed

5.7 sec in total

First Response

320 ms

Resources Loaded

3.9 sec

Page Rendered

1.4 sec

opticalexpress.nl screenshot

About Website

Welcome to opticalexpress.nl homepage info - get ready to check Optical Express best content for United Kingdom right away, or after learning these important things about opticalexpress.nl

Leading laser eye surgery provider with world class technology and offer lens surgery, cataract surgery, glasses, and contact lenses | Optical Express

Visit opticalexpress.nl

Key Findings

We analyzed Opticalexpress.nl page load time and found that the first response time was 320 ms and then it took 5.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

opticalexpress.nl performance score

20

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.4 s

39/100

10%

LCP (Largest Contentful Paint)

Value9.2 s

1/100

25%

SI (Speed Index)

Value12.3 s

3/100

10%

TBT (Total Blocking Time)

Value13,310 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.004

100/100

15%

TTI (Time to Interactive)

Value23.8 s

1/100

10%

Network Requests Diagram

opticalexpress.nl

320 ms

www.opticalexpress.co.uk

917 ms

gtm.js

73 ms

styles.css

455 ms

jquery-3.3.1.min.js

610 ms

Our browser made a total of 63 requests to load all elements on the main page. We found that 2% of them (1 request) were addressed to the original Opticalexpress.nl, 78% (49 requests) were made to Opticalexpress.co.uk and 6% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Opticalexpress.co.uk.

Page Optimization Overview & Recommendations

Page size can be reduced by 252.1 kB (14%)

Content Size

1.8 MB

After Optimization

1.5 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Opticalexpress.nl main page is 1.8 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. 75% of websites need less resources to load and that’s why Accessify’s recommendations for optimization and resource minification can be helpful for this project. Images take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-87%

Potential reduce by 146.3 kB

  • Original 168.9 kB
  • After minification 125.1 kB
  • After compression 22.6 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 43.7 kB, which is 26% 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 146.3 kB or 87% of the original size.

Image Optimization

-1%

Potential reduce by 8.4 kB

  • Original 1.3 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. Optical Express images are well optimized though.

JavaScript Optimization

-26%

Potential reduce by 60.4 kB

  • Original 236.8 kB
  • After minification 236.7 kB
  • After compression 176.4 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 60.4 kB or 26% of the original size.

CSS Optimization

-33%

Potential reduce by 37.1 kB

  • Original 111.8 kB
  • After minification 111.8 kB
  • After compression 74.7 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. Opticalexpress.nl needs all CSS files to be minified and compressed as it can save up to 37.1 kB or 33% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (52%)

Requests Now

52

After Optimization

25

  • Images
  • JavaScript
  • CSS

The browser has sent 52 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Optical Express. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 22 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

opticalexpress.nl

opticalexpress.nl

320 ms

www.opticalexpress.co.uk

www.opticalexpress.co.uk

917 ms

gtm.js

gtm.js

73 ms

styles.css

styles.css

455 ms

jquery-3.3.1.min.js

jquery-3.3.1.min.js

610 ms

owl.carousel.min.css

owl.carousel.min.css

383 ms

owl.theme.default.min.css

owl.theme.default.min.css

948 ms

slick.css

slick.css

884 ms

thanks-a-million.css

thanks-a-million.css

883 ms

css

css

153 ms

css

css

218 ms

jquery.min.js

jquery.min.js

1095 ms

jquery.matchHeight-min.js

jquery.matchHeight-min.js

1000 ms

picturefill.min.js

picturefill.min.js

1007 ms

jquery.validate.min.js

jquery.validate.min.js

993 ms

jqueryui-min.js

jqueryui-min.js

1096 ms

opticalexpress-partials.min.js

opticalexpress-partials.min.js

977 ms

booking.js

booking.js

1056 ms

bookingQuestionSteps.js

bookingQuestionSteps.js

1066 ms

slick.min.js

slick.min.js

1067 ms

owl.carousel.min.js

owl.carousel.min.js

1068 ms

owl-carousel-config.js

owl-carousel-config.js

1068 ms

simpleParallax.min.js

simpleParallax.min.js

552 ms

main.dist.min.js

main.dist.min.js

1251 ms

all-min.js

all-min.js

2018 ms

thanks-a-million.js

thanks-a-million.js

1068 ms

tp.widget.bootstrap.min.js

tp.widget.bootstrap.min.js

781 ms

cookieControl-9.x.min.js

cookieControl-9.x.min.js

882 ms

masonry.pkgd.min.js

masonry.pkgd.min.js

733 ms

spinner.gif

spinner.gif

928 ms

patient-reviews-carousel.png

patient-reviews-carousel.png

1925 ms

demi-rose-mawby_carousel.jpg

demi-rose-mawby_carousel.jpg

1926 ms

alex-mcleish_patient-reviews_carousel.jpg

alex-mcleish_patient-reviews_carousel.jpg

1930 ms

andy-cameron_patient-reviews_carousel.jpg

andy-cameron_patient-reviews_carousel.jpg

1930 ms

jill-gourlay_patient-reviews_carousel.jpg

jill-gourlay_patient-reviews_carousel.jpg

1927 ms

bruno_patient-reviews_carousel.jpg

bruno_patient-reviews_carousel.jpg

1931 ms

jamz_patient-reviews_carousel.jpg

jamz_patient-reviews_carousel.jpg

1928 ms

laura-gilmour_patient-reviews_carousel.jpg

laura-gilmour_patient-reviews_carousel.jpg

1932 ms

troy-williamson_patient-reviews_carousel.jpg

troy-williamson_patient-reviews_carousel.jpg

2072 ms

black-user-icon.jpg

black-user-icon.jpg

1928 ms

black-eye-icon.jpg

black-eye-icon.jpg

1927 ms

percent-solid.png

percent-solid.png

1929 ms

black-ey-icon.png

black-ey-icon.png

2072 ms

find-a-eye-clinic.png

find-a-eye-clinic.png

2073 ms

mobile-mbanner-home.jpg

mobile-mbanner-home.jpg

1859 ms

regular-semibold.woff

regular-semibold.woff

1760 ms

regular-bold.woff

regular-bold.woff

1757 ms

regular-medium.woff

regular-medium.woff

1760 ms

open-sans-regular.woff

open-sans-regular.woff

1558 ms

open-sans-bold.woff

open-sans-bold.woff

1558 ms

eye-closeup_homepage.jpg

eye-closeup_homepage.jpg

1523 ms

_iphone_recovered.jpg

_iphone_recovered.jpg

1506 ms

environmental-statement_homepage.jpg

environmental-statement_homepage.jpg

1606 ms

project-e-beach-image.jpg

project-e-beach-image.jpg

1499 ms

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

pxiByp8kv8JHgFVrLEj6Z1xlEA.ttf

129 ms

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

pxiByp8kv8JHgFVrLCz7Z1xlEA.ttf

246 ms

pxiEyp8kv8JHgFVrJJfedw.ttf

pxiEyp8kv8JHgFVrJJfedw.ttf

247 ms

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

pxiByp8kv8JHgFVrLDz8Z1xlEA.ttf

247 ms

blue-background.jpg

blue-background.jpg

1176 ms

home-group-3-fun4.jpg

home-group-3-fun4.jpg

1230 ms

trustpilot-inline-white-1024x121-4-5-stars.png

trustpilot-inline-white-1024x121-4-5-stars.png

1212 ms

persistCampaign.php

persistCampaign.php

478 ms

cse.js

cse.js

181 ms

Accessibility Review

opticalexpress.nl accessibility score

75

Accessibility Issues

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

Buttons do not have an accessible name

High

Image elements do not have [alt] attributes

High

Links do not have a discernible name

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

opticalexpress.nl best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

opticalexpress.nl SEO score

74

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

High

Image elements do not have [alt] attributes

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 Opticalexpress.nl 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 Opticalexpress.nl 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

opticalexpress.nl

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