Tools & Wizards About Us
contactlensonline.nl screenshot

Report Summary

  • 34

    Performance

    Renders faster than
    54% of other websites

  • 84

    Accessibility

    Visual factors better than
    that of 57% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 100

    SEO

    Google-friendlier than
    95% of websites

contactlensonline.nl

ContactlensOnline - Verantwoord contactlenzen bestellen

Page Load Speed

2.3 sec in total

First Response

339 ms

Resources Loaded

1.8 sec

Page Rendered

160 ms

contactlensonline.nl screenshot

About Website

Visit contactlensonline.nl now to see the best up-to-date Contactlens Online content and also check out these interesting facts you probably never knew about contactlensonline.nl

Onze webshop wordt ondersteund door oogartsen. Wij bieden medische informatie en verkopen enkel lenzen en vloeistoffen van hoogwaardige kwaliteit.

Visit contactlensonline.nl

Key Findings

We analyzed Contactlensonline.nl page load time and found that the first response time was 339 ms and then it took 2 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 35% of websites can load faster.

Performance Metrics

contactlensonline.nl performance score

34

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.9 s

25/100

10%

LCP (Largest Contentful Paint)

Value8.3 s

2/100

25%

SI (Speed Index)

Value7.8 s

24/100

10%

TBT (Total Blocking Time)

Value830 ms

35/100

30%

CLS (Cumulative Layout Shift)

Value0.029

100/100

15%

TTI (Time to Interactive)

Value8.9 s

34/100

10%

Network Requests Diagram

contactlensonline.nl

339 ms

www.contactlensonline.nl

697 ms

jquery-ui.css

98 ms

colorbox.css

168 ms

style.css

169 ms

Our browser made a total of 28 requests to load all elements on the main page. We found that 79% of them (22 requests) were addressed to the original Contactlensonline.nl, 14% (4 requests) were made to Ajax.googleapis.com and 7% (2 requests) were made to Stats.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (697 ms) belongs to the original domain Contactlensonline.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 58.0 kB (44%)

Content Size

130.5 kB

After Optimization

72.5 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Contactlensonline.nl main page is 130.5 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. 20% of websites need less resources to load. Images take 50.3 kB which makes up the majority of the site volume.

HTML Optimization

-74%

Potential reduce by 11.0 kB

  • Original 14.9 kB
  • After minification 13.8 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. 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 11.0 kB or 74% of the original size.

Image Optimization

-23%

Potential reduce by 11.8 kB

  • Original 50.3 kB
  • After minification 38.5 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. Obviously, Contactlens Online needs image optimization as it can save up to 11.8 kB or 23% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

JavaScript Optimization

-38%

Potential reduce by 16.1 kB

  • Original 42.5 kB
  • After minification 41.1 kB
  • After compression 26.4 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 16.1 kB or 38% of the original size.

CSS Optimization

-84%

Potential reduce by 19.1 kB

  • Original 22.8 kB
  • After minification 14.6 kB
  • After compression 3.7 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. Contactlensonline.nl needs all CSS files to be minified and compressed as it can save up to 19.1 kB or 84% of the original size.

Requests Breakdown

Number of requests can be reduced by 6 (23%)

Requests Now

26

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 26 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Contactlens Online. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 7 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

contactlensonline.nl

contactlensonline.nl

339 ms

www.contactlensonline.nl

www.contactlensonline.nl

697 ms

jquery-ui.css

jquery-ui.css

98 ms

colorbox.css

colorbox.css

168 ms

style.css

style.css

169 ms

jquery.min.js

jquery.min.js

99 ms

jquery-ui.min.js

jquery-ui.min.js

129 ms

jquery-ui-i18n.min.js

jquery-ui-i18n.min.js

158 ms

swfobject.js

swfobject.js

215 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

213 ms

main.js

main.js

217 ms

dc.js

dc.js

49 ms

placeholder.gif

placeholder.gif

169 ms

logo.jpg

logo.jpg

170 ms

sprite.png

sprite.png

250 ms

list-style-black.png

list-style-black.png

171 ms

bu_leesverder.gif

bu_leesverder.gif

171 ms

news.gif

news.gif

171 ms

bck_subsubproduct.gif

bck_subsubproduct.gif

332 ms

83dfbb70388c5e48c362a983c99491bc.jpg

83dfbb70388c5e48c362a983c99491bc.jpg

333 ms

bck_subsubcontent.gif

bck_subsubcontent.gif

333 ms

bck_subsubafsluit.gif

bck_subsubafsluit.gif

334 ms

5eb10130a56649c65c55c38882467f45.jpg

5eb10130a56649c65c55c38882467f45.jpg

333 ms

953bf9d2461c3ecdc9f04917edc54cf7.jpg

953bf9d2461c3ecdc9f04917edc54cf7.jpg

415 ms

a1874d83376b020fcec8a326c27cc9fe.jpg

a1874d83376b020fcec8a326c27cc9fe.jpg

498 ms

border1.png

border1.png

497 ms

border2.png

border2.png

498 ms

__utm.gif

__utm.gif

12 ms

Accessibility Review

contactlensonline.nl accessibility score

84

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

Form elements do not have associated labels

High

Links do not have a discernible name

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

contactlensonline.nl best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

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

Page has valid source maps

SEO Factors

contactlensonline.nl SEO score

100

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

Language and Encoding

  • Language Detected

    NL

  • Language Claimed

    NL

  • Encoding

    ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Contactlensonline.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it matches the claimed language. Our system also found out that Contactlensonline.nl 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

contactlensonline.nl

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