Tools & Wizards About Us
addisco.nl screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 100

    SEO

    Google-friendlier than
    94% of websites

addisco.nl

Addisco Onderwijscentrum - Klassieke Talen & Culturen: Grieks, Latijn, Egyptisch en Hebreeuws

Page Load Speed

11.5 sec in total

First Response

222 ms

Resources Loaded

9.9 sec

Page Rendered

1.4 sec

addisco.nl screenshot

About Website

Welcome to addisco.nl homepage info - get ready to check Addisco best content for Netherlands right away, or after learning these important things about addisco.nl

Bij Addisco Onderwijs kan iedereen Grieks, Latijn, Egyptisch en Hebreeuws leren op een toegankelijke en leuke manier van bevlogen docenten.

Visit addisco.nl

Key Findings

We analyzed Addisco.nl page load time and found that the first response time was 222 ms and then it took 11.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 90% of websites can load faster.

Performance Metrics

addisco.nl performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value8.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value12.5 s

0/100

25%

SI (Speed Index)

Value13.8 s

1/100

10%

TBT (Total Blocking Time)

Value1,160 ms

22/100

30%

CLS (Cumulative Layout Shift)

Value0.161

72/100

15%

TTI (Time to Interactive)

Value19.9 s

2/100

10%

Network Requests Diagram

addisco.nl

222 ms

www.addisco.nl

3010 ms

wpp.min.js

93 ms

icons-map.min.css

186 ms

bb-icons.min.css

356 ms

Our browser made a total of 174 requests to load all elements on the main page. We found that 99% of them (173 requests) were addressed to the original Addisco.nl, 1% (1 request) were made to Googletagmanager.com. The less responsive or slowest element that took the longest time to load (3 sec) belongs to the original domain Addisco.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 6.4 MB (50%)

Content Size

12.8 MB

After Optimization

6.4 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Addisco.nl main page is 12.8 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. Only a small number of websites need less resources to load. CSS take 5.3 MB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 196.6 kB

  • Original 236.0 kB
  • After minification 227.4 kB
  • After compression 39.3 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 196.6 kB or 83% of the original size.

Image Optimization

-1%

Potential reduce by 38.7 kB

  • Original 5.1 MB
  • After minification 5.1 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. Addisco images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 1.5 MB

  • Original 2.1 MB
  • After minification 2.1 MB
  • After compression 593.5 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 1.5 MB or 72% of the original size.

CSS Optimization

-87%

Potential reduce by 4.7 MB

  • Original 5.3 MB
  • After minification 5.3 MB
  • After compression 666.2 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. Addisco.nl needs all CSS files to be minified and compressed as it can save up to 4.7 MB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 139 (85%)

Requests Now

163

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 163 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Addisco. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 90 to 1 for JavaScripts and from 51 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

addisco.nl

addisco.nl

222 ms

www.addisco.nl

www.addisco.nl

3010 ms

wpp.min.js

wpp.min.js

93 ms

icons-map.min.css

icons-map.min.css

186 ms

bb-icons.min.css

bb-icons.min.css

356 ms

dashicons.min.css

dashicons.min.css

443 ms

buddypress.min.css

buddypress.min.css

791 ms

buddyboss_legacy.css

buddyboss_legacy.css

357 ms

style-buddypanel.css

style-buddypanel.css

268 ms

broadcasts.css

broadcasts.css

275 ms

button.css

button.css

361 ms

form.css

form.css

365 ms

index.min.css

index.min.css

448 ms

bb-access-control.min.css

bb-access-control.min.css

447 ms

bb-schedule-posts.min.css

bb-schedule-posts.min.css

450 ms

bb-tutorlms-admin.min.css

bb-tutorlms-admin.min.css

457 ms

mentions.min.css

mentions.min.css

533 ms

bundle.min.css

bundle.min.css

538 ms

uaf.css

uaf.css

540 ms

woocommerce-layout.css

woocommerce-layout.css

540 ms

woocommerce.css

woocommerce.css

635 ms

learndash_quiz_front.min.css

learndash_quiz_front.min.css

626 ms

styles.css

styles.css

630 ms

jquery.dropdown.min.css

jquery.dropdown.min.css

630 ms

learndash_lesson_video.min.css

learndash_lesson_video.min.css

631 ms

quform.css

quform.css

993 ms

h5p.css

h5p.css

722 ms

wpp.css

wpp.css

723 ms

extendify-utilities.css

extendify-utilities.css

817 ms

fonts.css

fonts.css

724 ms

learndash.min.css

learndash.min.css

1077 ms

elementor-icons.min.css

elementor-icons.min.css

819 ms

custom-frontend.min.css

custom-frontend.min.css

1000 ms

swiper.min.css

swiper.min.css

881 ms

post-42575.css

post-42575.css

900 ms

custom-pro-frontend.min.css

custom-pro-frontend.min.css

1254 ms

uael-frontend.min.css

uael-frontend.min.css

974 ms

js

js

61 ms

post-30445.css

post-30445.css

1079 ms

bp-zoom.min.css

bp-zoom.min.css

978 ms

magnific-popup.min.css

magnific-popup.min.css

893 ms

select2.min.css

select2.min.css

818 ms

theme.min.css

theme.min.css

892 ms

template-v2.min.css

template-v2.min.css

824 ms

buddypress.min.css

buddypress.min.css

987 ms

bbpress.min.css

bbpress.min.css

825 ms

learndash.min.css

learndash.min.css

1017 ms

woocommerce.min.css

woocommerce.min.css

829 ms

elementor.min.css

elementor.min.css

828 ms

custom.css

custom.css

834 ms

fontawesome.min.css

fontawesome.min.css

928 ms

solid.min.css

solid.min.css

937 ms

regular.min.css

regular.min.css

861 ms

wc-blocks.css

wc-blocks.css

884 ms

jquery.min.js

jquery.min.js

896 ms

jquery-migrate.min.js

jquery-migrate.min.js

906 ms

twemoji.min.js

twemoji.min.js

820 ms

bb-emoji-loader.min.js

bb-emoji-loader.min.js

819 ms

bb-reaction.min.js

bb-reaction.min.js

819 ms

widget-members.min.js

widget-members.min.js

821 ms

jquery-query.min.js

jquery-query.min.js

893 ms

jquery-cookie.min.js

jquery-cookie.min.js

815 ms

jquery-scroll-to.min.js

jquery-scroll-to.min.js

815 ms

bb-tutorlms-admin.min.js

bb-tutorlms-admin.min.js

813 ms

dropzone.min.js

dropzone.min.js

719 ms

exif.js

exif.js

722 ms

widget-groups.min.js

widget-groups.min.js

801 ms

bundle.min.js

bundle.min.js

746 ms

jquery.blockUI.min.js

jquery.blockUI.min.js

751 ms

add-to-cart.min.js

add-to-cart.min.js

661 ms

js.cookie.min.js

js.cookie.min.js

646 ms

woocommerce.min.js

woocommerce.min.js

647 ms

custom.js

custom.js

642 ms

broadcasts.js

broadcasts.js

1001 ms

isInViewport.min.js

isInViewport.min.js

993 ms

moment.min.js

moment.min.js

993 ms

livestamp.min.js

livestamp.min.js

992 ms

underscore.min.js

underscore.min.js

901 ms

wp-util.min.js

wp-util.min.js

892 ms

wp-polyfill-inert.min.js

wp-polyfill-inert.min.js

893 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

813 ms

wp-polyfill.min.js

wp-polyfill.min.js

803 ms

hooks.min.js

hooks.min.js

804 ms

i18n.min.js

i18n.min.js

803 ms

buddypress-nouveau.min.js

buddypress-nouveau.min.js

709 ms

backbone.min.js

backbone.min.js

695 ms

wp-backbone.min.js

wp-backbone.min.js

693 ms

bb-schedule-posts.min.js

bb-schedule-posts.min.js

665 ms

jquery.guillotine.min.js

jquery.guillotine.min.js

665 ms

comment-reply.min.js

comment-reply.min.js

666 ms

heartbeat.min.js

heartbeat.min.js

645 ms

codemirror.min.js

codemirror.min.js

642 ms

css.min.js

css.min.js

640 ms

buddypress-media.min.js

buddypress-media.min.js

640 ms

core.min.js

core.min.js

642 ms

menu.min.js

menu.min.js

640 ms

dom-ready.min.js

dom-ready.min.js

566 ms

a11y.min.js

a11y.min.js

558 ms

autocomplete.min.js

autocomplete.min.js

558 ms

buddypress-search.min.js

buddypress-search.min.js

555 ms

draggabilly.min.js

draggabilly.min.js

556 ms

bbp-scrubber.min.js

bbp-scrubber.min.js

555 ms

jquery.caret.min.js

jquery.caret.min.js

574 ms

jquery.atwho.min.js

jquery.atwho.min.js

545 ms

mentions.min.js

mentions.min.js

545 ms

convertkit.js

convertkit.js

546 ms

page-scroll-to-id.min.js

page-scroll-to-id.min.js

544 ms

sourcebuster.min.js

sourcebuster.min.js

544 ms

order-attribution.min.js

order-attribution.min.js

311 ms

quform.js

quform.js

313 ms

learndash.js

learndash.js

309 ms

magnific-popup.js

magnific-popup.js

311 ms

jquery.mask.js

jquery.mask.js

333 ms

bp-zoom.min.js

bp-zoom.min.js

308 ms

bb-countdown.min.js

bb-countdown.min.js

341 ms

imagesloaded.min.js

imagesloaded.min.js

342 ms

masonry.min.js

masonry.min.js

343 ms

menu.js

menu.js

340 ms

fitvids.js

fitvids.js

341 ms

slick.min.js

slick.min.js

344 ms

panelslider.min.js

panelslider.min.js

455 ms

sticky-kit.js

sticky-kit.js

453 ms

jssocials.min.js

jssocials.min.js

453 ms

main.min.js

main.min.js

455 ms

validate.min.js

validate.min.js

456 ms

select2.full.min.js

select2.full.min.js

458 ms

progressbar.min.js

progressbar.min.js

472 ms

mousewheel.min.js

mousewheel.min.js

474 ms

learndash.min.js

learndash.min.js

469 ms

bb-woocommerce.min.js

bb-woocommerce.min.js

473 ms

elementor.min.js

elementor.min.js

468 ms

slick.min.js

slick.min.js

473 ms

isotope.min.js

isotope.min.js

554 ms

uael-posts.min.js

uael-posts.min.js

559 ms

jquery_resize.min.js

jquery_resize.min.js

557 ms

webpack-pro.runtime.min.js

webpack-pro.runtime.min.js

559 ms

webpack.runtime.min.js

webpack.runtime.min.js

551 ms

frontend-modules.min.js

frontend-modules.min.js

458 ms

frontend.min.js

frontend.min.js

547 ms

waypoints.min.js

waypoints.min.js

545 ms

frontend.min.js

frontend.min.js

546 ms

elements-handlers.min.js

elements-handlers.min.js

644 ms

190301024545Aeonis.woff

190301024545Aeonis.woff

546 ms

fa-solid-900.woff

fa-solid-900.woff

728 ms

fa-regular-400.woff

fa-regular-400.woff

552 ms

lined.woff

lined.woff

554 ms

box-lined.woff

box-lined.woff

552 ms

filled.woff

filled.woff

530 ms

round-filled.woff

round-filled.woff

520 ms

round-lined.woff

round-lined.woff

654 ms

box-filled.woff

box-filled.woff

657 ms

adminbar-background.png

adminbar-background.png

655 ms

addisco-logo-web-2020.png

addisco-logo-web-2020.png

654 ms

addisco-logo-web-2020-wit.png

addisco-logo-web-2020-wit.png

652 ms

addisco-logo-wit.png

addisco-logo-wit.png

650 ms

search.svg

search.svg

553 ms

addisco-bg-driehoek.jpg

addisco-bg-driehoek.jpg

543 ms

addisco-atrium2.jpg

addisco-atrium2.jpg

542 ms

paleis-vierschaar-768x768.jpg

paleis-vierschaar-768x768.jpg

539 ms

lesgevorderden-zogr2022-768x768.jpg

lesgevorderden-zogr2022-768x768.jpg

536 ms

Addisco-nieuwe-banner-zomerschool-b.jpg

Addisco-nieuwe-banner-zomerschool-b.jpg

937 ms

Addisco-sfeerbeelden.jpg

Addisco-sfeerbeelden.jpg

526 ms

strand.jpg

strand.jpg

929 ms

hercules-c-1.png

hercules-c-1.png

926 ms

klassieke-olympiaden-2023.png

klassieke-olympiaden-2023.png

2002 ms

Screenshot-2024-05-24-162422-e1716560792859.png

Screenshot-2024-05-24-162422-e1716560792859.png

924 ms

Screenshot-2024-05-15-091211.png

Screenshot-2024-05-15-091211.png

923 ms

addisco-nieuwsbrief.jpg

addisco-nieuwsbrief.jpg

923 ms

banner-latijn.jpg

banner-latijn.jpg

840 ms

Boulanger-Gustave-slavernij.jpg

Boulanger-Gustave-slavernij.jpg

840 ms

640px-Aramaic_Inscription_on_Basalt_Monument_Dan_9th_Century_BC_43167226572.jpg

640px-Aramaic_Inscription_on_Basalt_Monument_Dan_9th_Century_BC_43167226572.jpg

840 ms

graffiti-pompeii.jpg

graffiti-pompeii.jpg

838 ms

addisco-stand02.jpg

addisco-stand02.jpg

838 ms

woocommerce-smallscreen.css

woocommerce-smallscreen.css

94 ms

Accessibility Review

addisco.nl accessibility score

83

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.

Navigation

These are opportunities to improve keyboard navigation in your application.

Impact

Issue

High

Heading elements are not in a sequentially-descending order

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

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

addisco.nl best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

addisco.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

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Addisco.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 Addisco.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

addisco.nl

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