Tools & Wizards About Us
lenzen-vergelijken.nl screenshot

Report Summary

  • 15

    Performance

    Renders faster than
    27% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 61% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 97

    SEO

    Google-friendlier than
    91% of websites

lenzen-vergelijken.nl

Lenzen Vergelijken | Goedkoopste Contactlenzen Online

Page Load Speed

5.1 sec in total

First Response

1.4 sec

Resources Loaded

3.2 sec

Page Rendered

430 ms

lenzen-vergelijken.nl screenshot

About Website

Visit lenzen-vergelijken.nl now to see the best up-to-date Lenzen Vergelijken content for Israel and also check out these interesting facts you probably never knew about lenzen-vergelijken.nl

✓ Beste Lenzenvergelijking - Vergelijk hier lenzen & Bestel contactlenzen online Goedkoop ✓ Wij vinden de Goedkoopste lenzen, bespaar geld!

Visit lenzen-vergelijken.nl

Key Findings

We analyzed Lenzen-vergelijken.nl page load time and found that the first response time was 1.4 sec and then it took 3.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

lenzen-vergelijken.nl performance score

15

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

13/100

10%

LCP (Largest Contentful Paint)

Value8.6 s

1/100

25%

SI (Speed Index)

Value12.0 s

4/100

10%

TBT (Total Blocking Time)

Value4,210 ms

1/100

30%

CLS (Cumulative Layout Shift)

Value0.177

68/100

15%

TTI (Time to Interactive)

Value10.1 s

26/100

10%

Network Requests Diagram

lenzen-vergelijken.nl

1408 ms

font-awesome.min.css

181 ms

bootstrap.min.css

295 ms

owl.carousel.css

186 ms

magnific-popup.css

184 ms

Our browser made a total of 101 requests to load all elements on the main page. We found that 83% of them (84 requests) were addressed to the original Lenzen-vergelijken.nl, 3% (3 requests) were made to Apis.google.com and 2% (2 requests) were made to S7.addthis.com. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Lenzen-vergelijken.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 955.7 kB (34%)

Content Size

2.8 MB

After Optimization

1.8 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Lenzen-vergelijken.nl main page is 2.8 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 1.6 MB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 147.5 kB

  • Original 188.3 kB
  • After minification 180.2 kB
  • After compression 40.8 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 147.5 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 89.7 kB

  • Original 1.6 MB
  • After minification 1.5 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. Lenzen Vergelijken images are well optimized though.

JavaScript Optimization

-62%

Potential reduce by 385.5 kB

  • Original 626.4 kB
  • After minification 616.2 kB
  • After compression 240.9 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 385.5 kB or 62% of the original size.

CSS Optimization

-85%

Potential reduce by 333.0 kB

  • Original 392.4 kB
  • After minification 340.9 kB
  • After compression 59.5 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. Lenzen-vergelijken.nl needs all CSS files to be minified and compressed as it can save up to 333.0 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 35 (36%)

Requests Now

97

After Optimization

62

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 97 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Lenzen Vergelijken. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 25 to 1 for JavaScripts and from 12 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

lenzen-vergelijken.nl

lenzen-vergelijken.nl

1408 ms

font-awesome.min.css

font-awesome.min.css

181 ms

bootstrap.min.css

bootstrap.min.css

295 ms

owl.carousel.css

owl.carousel.css

186 ms

magnific-popup.css

magnific-popup.css

184 ms

css

css

25 ms

style.css

style.css

185 ms

ehu.css

ehu.css

181 ms

sfsi-style.css

sfsi-style.css

276 ms

jquery-ui-min.css

jquery-ui-min.css

297 ms

main.min.css

main.min.css

272 ms

custom-coupon.css

custom-coupon.css

285 ms

colorbox.css

colorbox.css

286 ms

jquery.js

jquery.js

468 ms

jquery-migrate.min.js

jquery-migrate.min.js

364 ms

jquery.colorbox-min.js

jquery.colorbox-min.js

367 ms

adsbygoogle.js

adsbygoogle.js

5 ms

plusone.js

plusone.js

68 ms

platform.js

platform.js

101 ms

addthis_widget.js

addthis_widget.js

57 ms

bootstrap.min.js

bootstrap.min.js

284 ms

bootstrap-dropdown-multilevel.js

bootstrap-dropdown-multilevel.js

284 ms

bootstrap-table.min.js

bootstrap-table.min.js

286 ms

comment-reply.min.js

comment-reply.min.js

371 ms

owl.carousel.min.js

owl.carousel.min.js

377 ms

jquery.magnific-popup.min.js

jquery.magnific-popup.min.js

379 ms

custom.js

custom.js

380 ms

ehu.js

ehu.js

375 ms

jquery-ui-min.js

jquery-ui-min.js

654 ms

modernizr.custom.min.js

modernizr.custom.min.js

527 ms

jquery.shuffle.min.js

jquery.shuffle.min.js

528 ms

random-shuffle-min.js

random-shuffle-min.js

528 ms

custom.js

custom.js

528 ms

analytics.js

analytics.js

7 ms

collect

collect

40 ms

original_Final-Logo1.png

original_Final-Logo1.png

112 ms

air-optix-lenzen-vergelijken.jpg

air-optix-lenzen-vergelijken.jpg

427 ms

LensOn-banner.gif

LensOn-banner.gif

424 ms

lenzen-vergelijken.nl

lenzen-vergelijken.nl

1097 ms

ciba-dalies-aqua-comfort-plus.jpg

ciba-dalies-aqua-comfort-plus.jpg

169 ms

freshlook-dimension.jpg

freshlook-dimension.jpg

198 ms

biofinity1.jpg

biofinity1.jpg

276 ms

Acuvue-Oasys.jpg

Acuvue-Oasys.jpg

277 ms

FreshLook-ColorBlends.jpg

FreshLook-ColorBlends.jpg

424 ms

Air-optix-multifocal.jpg

Air-optix-multifocal.jpg

423 ms

Air-optix.jpg

Air-optix.jpg

425 ms

Dailies-Total-1.jpg

Dailies-Total-1.jpg

427 ms

1-day-acuvue-moist.jpg

1-day-acuvue-moist.jpg

426 ms

1-day-acuvue-trueye.jpg

1-day-acuvue-trueye.jpg

426 ms

Air-optix-night-Day1.jpg

Air-optix-night-Day1.jpg

474 ms

SofLens-59.jpg

SofLens-59.jpg

502 ms

proclear-toric.png.jpg

proclear-toric.png.jpg

509 ms

Acuvue_Advance.jpg

Acuvue_Advance.jpg

509 ms

proclear-multifocal.jpg

proclear-multifocal.jpg

511 ms

biofinity-multifocal.jpg

biofinity-multifocal.jpg

551 ms

Renu-MPS.jpg

Renu-MPS.jpg

595 ms

soflens-colors.jpg

soflens-colors.jpg

599 ms

Opti-free.jpg

Opti-free.jpg

599 ms

soflens-colors.jpeg

soflens-colors.jpeg

600 ms

BIO-True.jpg

BIO-True.jpg

643 ms

AO-SEPT-PLUS.jpg

AO-SEPT-PLUS.jpg

689 ms

airoptix.jpg

airoptix.jpg

689 ms

FreshLook-Colors.jpg

FreshLook-Colors.jpg

690 ms

Air-optix1.jpg

Air-optix1.jpg

692 ms

acuvueoasysstigm6.jpg

acuvueoasysstigm6.jpg

824 ms

freshlook-one-day-color.jpg

freshlook-one-day-color.jpg

745 ms

s-BiyweUPV0v-yRb-cjciMDdSZkkecOE1hvV7ZHvhyU.ttf

s-BiyweUPV0v-yRb-cjciMDdSZkkecOE1hvV7ZHvhyU.ttf

67 ms

EFpQQyG9GqCrobXxL-KRMcBaWKZ57bY3RXgXH6dOjZ0.ttf

EFpQQyG9GqCrobXxL-KRMcBaWKZ57bY3RXgXH6dOjZ0.ttf

68 ms

sdk.js

sdk.js

384 ms

cb=gapi.loaded_0

cb=gapi.loaded_0

63 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

684 ms

1dayacuvue90.jpg

1dayacuvue90.jpg

679 ms

myday-daily-disposable-.jpg

myday-daily-disposable-.jpg

681 ms

Focus-Dailies.jpg

Focus-Dailies.jpg

765 ms

widgets.js

widgets.js

49 ms

Biomedics-1-day-extra.jpg

Biomedics-1-day-extra.jpg

714 ms

Freshlook.png

Freshlook.png

888 ms

cooper-vision-logo-3.png

cooper-vision-logo-3.png

681 ms

Alcon_Ciba_Vision_logo2.jpg

Alcon_Ciba_Vision_logo2.jpg

653 ms

bauch-lomb.jpg

bauch-lomb.jpg

690 ms

300lo.json

300lo.json

60 ms

%D7%9E%D7%A4%D7%AA%D7%97.jpg

%D7%9E%D7%A4%D7%AA%D7%97.jpg

549 ms

banner3.jpg

banner3.jpg

550 ms

banner4.jpg

banner4.jpg

590 ms

123lens-vergelijk.png

123lens-vergelijk.png

634 ms

lenson.png

lenson.png

637 ms

BigLensWayLogo.jpg

BigLensWayLogo.jpg

639 ms

Hans_Anders_Opticiens.gif

Hans_Anders_Opticiens.gif

679 ms

Contactlenzen-Optica.jpg

Contactlenzen-Optica.jpg

723 ms

eurolens-bestellen.jpg

eurolens-bestellen.jpg

725 ms

sh.8e5f85691f9aaa082472a194.html

sh.8e5f85691f9aaa082472a194.html

37 ms

147 ms

xd_arbiter.php

xd_arbiter.php

216 ms

xd_arbiter.php

xd_arbiter.php

421 ms

contactlenzenopticien-vergelijken.png

contactlenzenopticien-vergelijken.png

677 ms

logo-misterspex2.jpg

logo-misterspex2.jpg

653 ms

eye_water_id620886_size1.jpg

eye_water_id620886_size1.jpg

857 ms

party-lenzen.jpg

party-lenzen.jpg

774 ms

1500px.jpg

1500px.jpg

727 ms

close.png

close.png

692 ms

open.png

open.png

649 ms

Accessibility Review

lenzen-vergelijken.nl accessibility score

86

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

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

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

lenzen-vergelijken.nl 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

High

Page has valid source maps

SEO Factors

lenzen-vergelijken.nl SEO score

97

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

    NL

  • Language Claimed

    DE

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Lenzen-vergelijken.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and it does not match the claimed German language. Our system also found out that Lenzen-vergelijken.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

lenzen-vergelijken.nl

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