Tools & Wizards About Us
zadan.nl screenshot

Report Summary

  • 46

    Performance

    Renders faster than
    64% of other websites

  • 76

    Accessibility

    Visual factors better than
    that of 42% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

zadan.nl

TWOPINE - Online strategie, design en techniek uit Rijswijk

Page Load Speed

19.5 sec in total

First Response

272 ms

Resources Loaded

5.8 sec

Page Rendered

13.5 sec

zadan.nl screenshot

About Website

Welcome to zadan.nl homepage info - get ready to check Zadan best content right away, or after learning these important things about zadan.nl

Vanaf de Delftweg lossen wij als digitaal bureau al 13 jaar complexe online vraagstukken op.

Visit zadan.nl

Key Findings

We analyzed Zadan.nl page load time and found that the first response time was 272 ms and then it took 19.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 95% of websites can load faster.

Performance Metrics

zadan.nl performance score

46

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.6 s

14/100

10%

LCP (Largest Contentful Paint)

Value12.9 s

0/100

25%

SI (Speed Index)

Value7.5 s

27/100

10%

TBT (Total Blocking Time)

Value350 ms

73/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value7.4 s

49/100

10%

Network Requests Diagram

www.twopine.nl

272 ms

www.twopine.nl

379 ms

twopine.nl

648 ms

main.min.css

181 ms

gsap.min.js

32 ms

Our browser made a total of 241 requests to load all elements on the main page. We found that 0% of them (0 request) were addressed to the original Zadan.nl, 1% (2 requests) were made to Cdnjs.cloudflare.com. The less responsive or slowest element that took the longest time to load (910 ms) relates to the external source Twopine.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 631.1 kB (3%)

Content Size

22.9 MB

After Optimization

22.3 MB

  • HTML
  • Images

In fact, the total size of Zadan.nl main page is 22.9 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. Images take 22.7 MB which makes up the majority of the site volume.

HTML Optimization

-72%

Potential reduce by 144.8 kB

  • Original 200.1 kB
  • After minification 158.4 kB
  • After compression 55.3 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. This page needs HTML code to be minified as it can gain 41.7 kB, which is 21% 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 144.8 kB or 72% of the original size.

Image Optimization

-2%

Potential reduce by 486.3 kB

  • Original 22.7 MB
  • After minification 22.2 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. Zadan images are well optimized though.

Requests Breakdown

Number of requests can be reduced by 3 (1%)

Requests Now

232

After Optimization

229

  • Images
  • JavaScript
  • CSS

The browser has sent 232 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Zadan. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 4 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

www.twopine.nl

www.twopine.nl

272 ms

www.twopine.nl

www.twopine.nl

379 ms

twopine.nl

twopine.nl

648 ms

main.min.css

main.min.css

181 ms

gsap.min.js

gsap.min.js

32 ms

ScrollTrigger.min.js

ScrollTrigger.min.js

53 ms

SplitText.min.js

SplitText.min.js

272 ms

MotionPathPlugin.min.js

MotionPathPlugin.min.js

274 ms

vacature_2.jpg

vacature_2.jpg

182 ms

reni.jpg

reni.jpg

273 ms

kav.jpg

kav.jpg

276 ms

hero_uscd.jpg

hero_uscd.jpg

454 ms

hero_adodh.jpg

hero_adodh.jpg

552 ms

cq-24.jpg

cq-24.jpg

544 ms

hero_l5.jpg

hero_l5.jpg

276 ms

abn-tile.jpg

abn-tile.jpg

363 ms

abn-logo.png

abn-logo.png

366 ms

handshake_1f91d.png

handshake_1f91d.png

367 ms

kav-tile.jpg

kav-tile.jpg

457 ms

kav-logo.png

kav-logo.png

458 ms

babassu-tile.jpg

babassu-tile.jpg

459 ms

babassu-logo.png

babassu-logo.png

544 ms

hs-tile.jpg

hs-tile.jpg

547 ms

hs-logo.png

hs-logo.png

549 ms

ikrij-tile.jpg

ikrij-tile.jpg

550 ms

ikrij-logo.png

ikrij-logo.png

634 ms

nvb-logo.png

nvb-logo.png

635 ms

loods5-tile.jpg

loods5-tile.jpg

636 ms

l5-logo.png

l5-logo.png

639 ms

uscd-tile.jpg

uscd-tile.jpg

733 ms

vds-logo.png

vds-logo.png

641 ms

sign-of-the-horns_1f918.png

sign-of-the-horns_1f918.png

723 ms

ertg-tile.jpg

ertg-tile.jpg

814 ms

ig-logo.png

ig-logo.png

728 ms

adodh-tile.jpg

adodh-tile.jpg

908 ms

adodh-logo.png

adodh-logo.png

735 ms

bbcearth-logo.png

bbcearth-logo.png

816 ms

schieblock-tile.jpg

schieblock-tile.jpg

821 ms

vps-logo.png

vps-logo.png

825 ms

kav-bc01.jpg

kav-bc01.jpg

826 ms

kav-deals.jpg

kav-deals.jpg

904 ms

kav-cal.jpg

kav-cal.jpg

906 ms

kav-ibuzz.jpg

kav-ibuzz.jpg

910 ms

kav-mobile.jpg

kav-mobile.jpg

832 ms

HelveticaNeue-Bold-02.woff

HelveticaNeue-Bold-02.woff

740 ms

HelveticaNeue-01.woff

HelveticaNeue-01.woff

732 ms

HelveticaNeue-Light-08.woff

HelveticaNeue-Light-08.woff

822 ms

HelveticaNeue-Italic-03.woff

HelveticaNeue-Italic-03.woff

736 ms

HelveticaNeue-LightItalic-09.woff

HelveticaNeue-LightItalic-09.woff

648 ms

HelveticaNeue-BoldItalic-04.woff

HelveticaNeue-BoldItalic-04.woff

671 ms

kav_zomer.jpg

kav_zomer.jpg

671 ms

kav-desktop.jpg

kav-desktop.jpg

639 ms

kav_sl.jpg

kav_sl.jpg

646 ms

kav_winter.jpg

kav_winter.jpg

646 ms

kav_herfst.jpg

kav_herfst.jpg

657 ms

kav-ov.jpg

kav-ov.jpg

576 ms

kav_thom-dave.jpg

kav_thom-dave.jpg

641 ms

kav-boksie.png

kav-boksie.png

640 ms

kav-logo_dark.png

kav-logo_dark.png

639 ms

HR-preview.jpg

HR-preview.jpg

644 ms

4.jpg

4.jpg

645 ms

5.jpg

5.jpg

565 ms

slide_02.jpg

slide_02.jpg

642 ms

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slide_03.jpg

640 ms

2.jpg

2.jpg

641 ms

slide_07.jpg

slide_07.jpg

638 ms

slide_09.jpg

slide_09.jpg

560 ms

slide_04.jpg

slide_04.jpg

558 ms

7.jpg

7.jpg

631 ms

8.jpg

8.jpg

629 ms

slide_05.jpg

slide_05.jpg

554 ms

slide_06.jpg

slide_06.jpg

553 ms

1.jpg

1.jpg

550 ms

data.jpg

data.jpg

553 ms

gastles.jpg

gastles.jpg

626 ms

banken.jpg

banken.jpg

554 ms

cq-23.jpg

cq-23.jpg

554 ms

school-groep6.jpg

school-groep6.jpg

553 ms

bereik.jpg

bereik.jpg

555 ms

cq-23_mbo.jpg

cq-23_mbo.jpg

558 ms

landschap.jpg

landschap.jpg

623 ms

nvb-logo_black.png

nvb-logo_black.png

546 ms

1_imagetext.jpg

1_imagetext.jpg

548 ms

2_footer.jpg

2_footer.jpg

525 ms

3_account.jpg

3_account.jpg

525 ms

6_blocks.jpg

6_blocks.jpg

509 ms

4_repieter.jpg

4_repieter.jpg

551 ms

11_productpage.jpg

11_productpage.jpg

545 ms

5_emailgrid.jpg

5_emailgrid.jpg

546 ms

7_pos.jpg

7_pos.jpg

535 ms

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8_pos.jpg

535 ms

9_mob.jpg

9_mob.jpg

541 ms

10_overflow.jpg

10_overflow.jpg

550 ms

12_mob.jpg

12_mob.jpg

552 ms

13_mob_account.jpg

13_mob_account.jpg

548 ms

14_mob-concept.jpg

14_mob-concept.jpg

547 ms

15_mob-hp.jpg

15_mob-hp.jpg

547 ms

l5-logo_black.png

l5-logo_black.png

551 ms

02.jpg

02.jpg

551 ms

03.jpg

03.jpg

552 ms

04.jpg

04.jpg

552 ms

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552 ms

06.jpg

06.jpg

549 ms

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07.jpg

551 ms

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552 ms

09.jpg

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551 ms

10.jpg

10.jpg

555 ms

action.jpg

action.jpg

552 ms

board.jpg

board.jpg

552 ms

engine.jpg

engine.jpg

551 ms

logics.jpg

logics.jpg

551 ms

mockup_vert.jpg

mockup_vert.jpg

551 ms

videocontrols.jpg

videocontrols.jpg

554 ms

a1-poster.jpg

a1-poster.jpg

554 ms

4xa4_alt.jpg

4xa4_alt.jpg

554 ms

web-hp.jpg

web-hp.jpg

552 ms

a3-delftsestraat.jpg

a3-delftsestraat.jpg

550 ms

web.jpg

web.jpg

549 ms

a3-mailbox.jpg

a3-mailbox.jpg

553 ms

web-spaces.jpg

web-spaces.jpg

555 ms

cover.jpg

cover.jpg

556 ms

futuredome-plattegrond.jpg

futuredome-plattegrond.jpg

554 ms

futuredome-voorwoord.jpg

futuredome-voorwoord.jpg

550 ms

logo.jpg

logo.jpg

550 ms

wegwijzerpaal-43-blue.jpg

wegwijzerpaal-43-blue.jpg

554 ms

vps-logo_black.png

vps-logo_black.png

554 ms

ertg_pb.jpg

ertg_pb.jpg

556 ms

ertg_adv.jpg

ertg_adv.jpg

551 ms

ertg_rating.jpg

ertg_rating.jpg

551 ms

ertg_menu.jpg

ertg_menu.jpg

549 ms

ertg_hp.jpg

ertg_hp.jpg

553 ms

ertg_langs.jpg

ertg_langs.jpg

553 ms

ertg_admin-panel.jpg

ertg_admin-panel.jpg

556 ms

concept-1.jpg

concept-1.jpg

550 ms

concept-2.jpg

concept-2.jpg

549 ms

bankdruk.jpg

bankdruk.jpg

550 ms

f150.jpg

f150.jpg

551 ms

config-row.jpg

config-row.jpg

553 ms

ram1500.jpg

ram1500.jpg

554 ms

chart.jpg

chart.jpg

552 ms

jessey.jpg

jessey.jpg

548 ms

laurens.jpg

laurens.jpg

550 ms

evi.jpg

evi.jpg

549 ms

bruce.jpg

bruce.jpg

551 ms

P4030600.jpg

P4030600.jpg

552 ms

P4030396.jpg

P4030396.jpg

553 ms

P4030593.jpg

P4030593.jpg

548 ms

P4030338.jpg

P4030338.jpg

549 ms

P4030579.jpg

P4030579.jpg

550 ms

tijn-plant.jpg

tijn-plant.jpg

550 ms

bakwagens.webp

bakwagens.webp

552 ms

sebas-li.jpg

sebas-li.jpg

553 ms

IMG_7527.webp

IMG_7527.webp

548 ms

ikrij.webp

ikrij.webp

548 ms

ado-goldband.webp

ado-goldband.webp

546 ms

hackshield_1.jpg

hackshield_1.jpg

547 ms

quote-nvb.jpg

quote-nvb.jpg

548 ms

dave.webp

dave.webp

549 ms

schaapjes.webp

schaapjes.webp

549 ms

abo-brainstorm.webp

abo-brainstorm.webp

550 ms

cs_2.jpg

cs_2.jpg

547 ms

cs_3.jpg

cs_3.jpg

548 ms

cs_5.jpg

cs_5.jpg

550 ms

IMG_7961.jpg

IMG_7961.jpg

553 ms

sashimi-waterval.webp

sashimi-waterval.webp

549 ms

IMG_3172.gif

IMG_3172.gif

641 ms

IMG_5041.jpg

IMG_5041.jpg

547 ms

IMG_2798.jpg

IMG_2798.jpg

550 ms

PHOTO-2022-08-23-21-52-46.jpg

PHOTO-2022-08-23-21-52-46.jpg

550 ms

IMG_1761.jpg

IMG_1761.jpg

550 ms

e1ccd0db-2c88-4b38-bfa5-bd09e555dc7f.jpg

e1ccd0db-2c88-4b38-bfa5-bd09e555dc7f.jpg

550 ms

f4f73b93-3742-4875-bcf6-9ed69f9ed9e8.jpg

f4f73b93-3742-4875-bcf6-9ed69f9ed9e8.jpg

553 ms

PHOTO-2021-11-05-16-23-59_2.jpg

PHOTO-2021-11-05-16-23-59_2.jpg

553 ms

ado06.jpg

ado06.jpg

555 ms

PHOTO-2021-06-14-13-09-32.jpg

PHOTO-2021-06-14-13-09-32.jpg

556 ms

IMG_8920.jpg

IMG_8920.jpg

626 ms

IMG_8935.jpg

IMG_8935.jpg

550 ms

PHOTO-2021-05-27-09-25-42.jpg

PHOTO-2021-05-27-09-25-42.jpg

550 ms

PHOTO-2020-09-24-09-05-52.jpg

PHOTO-2020-09-24-09-05-52.jpg

552 ms

PHOTO-2020-08-13-15-20-01.jpg

PHOTO-2020-08-13-15-20-01.jpg

551 ms

PHOTO-2020-12-08-18-16-24.jpg

PHOTO-2020-12-08-18-16-24.jpg

551 ms

PHOTO-2020-06-19-14-00-21.jpg

PHOTO-2020-06-19-14-00-21.jpg

623 ms

PHOTO-2020-02-18-15-12-39.jpg

PHOTO-2020-02-18-15-12-39.jpg

552 ms

PHOTO-2020-03-23-09-56-14.jpg

PHOTO-2020-03-23-09-56-14.jpg

554 ms

PHOTO-2020-02-06-10-15-49.jpg

PHOTO-2020-02-06-10-15-49.jpg

555 ms

PHOTO-2020-01-24-16-32-34.jpg

PHOTO-2020-01-24-16-32-34.jpg

552 ms

PHOTO-2020-01-17-11-30-34.jpg

PHOTO-2020-01-17-11-30-34.jpg

550 ms

PHOTO-2019-11-19-21-03-37.jpg

PHOTO-2019-11-19-21-03-37.jpg

621 ms

PHOTO-2019-10-18-09-14-56.jpg

PHOTO-2019-10-18-09-14-56.jpg

556 ms

PHOTO-2019-05-29-12-58-40.jpg

PHOTO-2019-05-29-12-58-40.jpg

551 ms

PHOTO-2019-07-15-12-54-40.jpg

PHOTO-2019-07-15-12-54-40.jpg

559 ms

PHOTO-2019-03-08-16-24-11.jpg

PHOTO-2019-03-08-16-24-11.jpg

558 ms

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PHOTO-2019-02-22-16-03-14.jpg

555 ms

PHOTO-2018-12-18-23-22-55.jpg

PHOTO-2018-12-18-23-22-55.jpg

624 ms

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PHOTO-2019-02-21-11-35-20.jpg

553 ms

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PHOTO-2018-10-30-16-41-54.jpg

553 ms

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PHOTO-2018-12-18-23-22-41.jpg

553 ms

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PHOTO-2018-06-05-19-55-36.jpg

551 ms

PHOTO-2018-10-13-14-37-00.jpg

PHOTO-2018-10-13-14-37-00.jpg

549 ms

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PHOTO-2018-06-05-19-55-35.jpg

619 ms

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553 ms

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550 ms

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549 ms

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549 ms

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549 ms

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PHOTO-2021-06-03-09-50-08.jpg

548 ms

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551 ms

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549 ms

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545 ms

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545 ms

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543 ms

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547 ms

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549 ms

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552 ms

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551 ms

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553 ms

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551 ms

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548 ms

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548 ms

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547 ms

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IMG_4164.jpg

548 ms

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IMG_4746.jpg

551 ms

IMG_2735.jpg

IMG_2735.jpg

549 ms

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IMG_4003.jpg

547 ms

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IMG_2498_2.jpg

548 ms

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IMG_2708.jpg

547 ms

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544 ms

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546 ms

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544 ms

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IMG_2055.jpg

547 ms

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IMG_1893.jpg

548 ms

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IMG_1737.jpg

549 ms

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IMG_1004.jpg

550 ms

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IMG_0669.jpg

549 ms

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IMG_0867.jpg

547 ms

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IMG_0659.jpg

548 ms

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548 ms

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IMG_0323.jpg

549 ms

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IMG_0050.jpg

547 ms

kom-werken.jpg

kom-werken.jpg

548 ms

map_copyright-google.jpg

map_copyright-google.jpg

551 ms

Accessibility Review

zadan.nl accessibility score

76

Accessibility Issues

Internationalization and localization

These are opportunities to improve the interpretation of your content by users in different locales.

Impact

Issue

High

<html> element does not have a [lang] attribute

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

zadan.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

SEO Factors

zadan.nl SEO score

77

Search Engine Optimization Advices

Crawling and Indexing

To appear in search results, crawlers need access to your app.

Impact

Issue

High

Links are not crawlable

High

robots.txt is not valid

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Zadan.nl can be misinterpreted by Google and other search engines. Our service has detected that Dutch is used on the page, and neither this language nor any other was claimed in <html> or <meta> tags. Our system also found out that Zadan.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

zadan.nl

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