Tools & Wizards About Us
checkmark.nl screenshot

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 66% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

checkmark.nl

Specialist in laboratorium vacatures - CheckMark Labrecruitment

Page Load Speed

9.3 sec in total

First Response

467 ms

Resources Loaded

8.1 sec

Page Rendered

752 ms

checkmark.nl screenshot

About Website

Click here to check amazing Check Mark content for Netherlands. Otherwise, check out these important facts you probably never knew about checkmark.nl

CheckMark heeft een groot netwerk aan opdrachtgevers binnen de chemie, biotech, food en farma. Hierdoor beschikken we over een uitgebreid vacatureaanbod.

Visit checkmark.nl

Key Findings

We analyzed Checkmark.nl page load time and found that the first response time was 467 ms and then it took 8.9 sec to load all DOM resources and completely render a web page. This is a poor result, as 85% of websites can load faster.

Performance Metrics

checkmark.nl performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value4.5 s

15/100

10%

LCP (Largest Contentful Paint)

Value6.6 s

8/100

25%

SI (Speed Index)

Value18.1 s

0/100

10%

TBT (Total Blocking Time)

Value23,040 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.046

99/100

15%

TTI (Time to Interactive)

Value31.1 s

0/100

10%

Network Requests Diagram

checkmark.nl

467 ms

checkmark.nl

3189 ms

gtm.js

303 ms

wp-emoji-release.min.js

181 ms

FormGen.css

307 ms

Our browser made a total of 116 requests to load all elements on the main page. We found that 72% of them (83 requests) were addressed to the original Checkmark.nl, 5% (6 requests) were made to Maps.googleapis.com and 4% (5 requests) were made to Gstatic.com. The less responsive or slowest element that took the longest time to load (3.2 sec) belongs to the original domain Checkmark.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 582.9 kB (36%)

Content Size

1.6 MB

After Optimization

1.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Checkmark.nl main page is 1.6 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. 80% 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 724.7 kB which makes up the majority of the site volume.

HTML Optimization

-83%

Potential reduce by 88.4 kB

  • Original 106.7 kB
  • After minification 96.1 kB
  • After compression 18.3 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 88.4 kB or 83% of the original size.

Image Optimization

-5%

Potential reduce by 39.7 kB

  • Original 724.7 kB
  • After minification 685.0 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. Check Mark images are well optimized though.

JavaScript Optimization

-4%

Potential reduce by 6.0 kB

  • Original 152.8 kB
  • After minification 152.8 kB
  • After compression 146.8 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. This website has mostly compressed JavaScripts.

CSS Optimization

-73%

Potential reduce by 448.8 kB

  • Original 616.1 kB
  • After minification 616.1 kB
  • After compression 167.2 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. Checkmark.nl needs all CSS files to be minified and compressed as it can save up to 448.8 kB or 73% of the original size.

Requests Breakdown

Number of requests can be reduced by 48 (44%)

Requests Now

108

After Optimization

60

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 108 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Check Mark. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 35 to 1 for JavaScripts and from 15 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

checkmark.nl

checkmark.nl

467 ms

checkmark.nl

checkmark.nl

3189 ms

gtm.js

gtm.js

303 ms

wp-emoji-release.min.js

wp-emoji-release.min.js

181 ms

FormGen.css

FormGen.css

307 ms

jquery-ui.css

jquery-ui.css

481 ms

main.css

main.css

396 ms

style.css

style.css

489 ms

style.min.css

style.min.css

578 ms

styles.css

styles.css

363 ms

css

css

140 ms

genericons.css

genericons.css

361 ms

style.css

style.css

706 ms

shortcodes.css

shortcodes.css

451 ms

grey.css

grey.css

455 ms

js_composer.min.css

js_composer.min.css

875 ms

jquery.bxslider.css

jquery.bxslider.css

555 ms

dashicons.min.css

dashicons.min.css

627 ms

jquery.min.js

jquery.min.js

721 ms

jquery-migrate.min.js

jquery-migrate.min.js

637 ms

FormGen.js

FormGen.js

635 ms

main.js

main.js

718 ms

icheck.js

icheck.js

726 ms

jquery.bxslider.min.js

jquery.bxslider.min.js

728 ms

js

js

151 ms

core.min.js

core.min.js

769 ms

datepicker.min.js

datepicker.min.js

787 ms

script.js

script.js

787 ms

regenerator-runtime.min.js

regenerator-runtime.min.js

793 ms

wp-polyfill.min.js

wp-polyfill.min.js

795 ms

index.js

index.js

1104 ms

functions.js

functions.js

1090 ms

js_composer_front.min.js

js_composer_front.min.js

1094 ms

api.js

api.js

134 ms

index.js

index.js

1103 ms

video_js.js

video_js.js

1104 ms

analytics.js

analytics.js

50 ms

collect

collect

43 ms

collect

collect

50 ms

ga-audiences

ga-audiences

38 ms

Checkmark-Logo.png

Checkmark-Logo.png

230 ms

nl.png

nl.png

230 ms

en.png

en.png

228 ms

IMG_1391_1x1-1.jpg

IMG_1391_1x1-1.jpg

246 ms

1845_1x1.jpg

1845_1x1.jpg

226 ms

IMG_13851x1.jpg

IMG_13851x1.jpg

244 ms

Untitled-4.jpg

Untitled-4.jpg

1235 ms

IMG_17061x1.jpg

IMG_17061x1.jpg

1235 ms

Untitled-6.jpg

Untitled-6.jpg

1237 ms

IMG_1552_1x2.jpg

IMG_1552_1x2.jpg

1235 ms

magenta-background.jpg

magenta-background.jpg

1236 ms

home-header-filter-background.jpg

home-header-filter-background.jpg

1234 ms

play-button.png

play-button.png

1332 ms

Foto_Tamara-blog-353x235.jpg

Foto_Tamara-blog-353x235.jpg

1349 ms

Copyright-Raymond-Wennekes-SDDNZS-Expeditie-Zuid-2022_08_low-res-353x235.jpg

Copyright-Raymond-Wennekes-SDDNZS-Expeditie-Zuid-2022_08_low-res-353x235.jpg

1330 ms

Checkmark-labrecruitment4-353x235.jpg

Checkmark-labrecruitment4-353x235.jpg

1350 ms

P1130282-scaled-353x235.jpg

P1130282-scaled-353x235.jpg

1329 ms

P1130257-scaled-353x235.jpg

P1130257-scaled-353x235.jpg

1328 ms

footer-logo-checkmark.png

footer-logo-checkmark.png

1690 ms

NEN-4400-1.png

NEN-4400-1.png

1689 ms

sna.png

sna.png

1689 ms

nbbu.png

nbbu.png

1688 ms

footer-facebook.png

footer-facebook.png

1693 ms

footer-linkedin.png

footer-linkedin.png

1693 ms

footer-twitter.png

footer-twitter.png

1695 ms

footer-instagram.png

footer-instagram.png

1696 ms

abbott.png

abbott.png

1695 ms

akzo.png

akzo.png

1693 ms

alcami.png

alcami.png

1696 ms

astellas-new-3.png

astellas-new-3.png

1698 ms

fbevents.js

fbevents.js

237 ms

insight.min.js

insight.min.js

1221 ms

d3e09291-fe46-4493-9379-15c4e935d806.js

d3e09291-fe46-4493-9379-15c4e935d806.js

1213 ms

dsm.png

dsm.png

1554 ms

genmab.png

genmab.png

1548 ms

Intertek-Caleb-Brett-horizontaal.png

Intertek-Caleb-Brett-horizontaal.png

1544 ms

janssen.png

janssen.png

1535 ms

msd.png

msd.png

1535 ms

sgs.png

sgs.png

1533 ms

HelveticaNeue-Light.woff

HelveticaNeue-Light.woff

1577 ms

HelveticaNeue-Bold.woff

HelveticaNeue-Bold.woff

1577 ms

HelveticaNeue-MediumCond.woff

HelveticaNeue-MediumCond.woff

1470 ms

shell.png

shell.png

1470 ms

tno.png

tno.png

1470 ms

home-video.jpg

home-video.jpg

1570 ms

recaptcha__en.js

recaptcha__en.js

410 ms

gen_204

gen_204

196 ms

431261227632308

431261227632308

469 ms

home-4.jpg

home-4.jpg

569 ms

1842_1x1.jpg

1842_1x1.jpg

569 ms

pattern_bg_light.jpg

pattern_bg_light.jpg

579 ms

16-CheckMark-1631_35_-small-blackwhite.jpg

16-CheckMark-1631_35_-small-blackwhite.jpg

1039 ms

IMG_17061x1.jpg

IMG_17061x1.jpg

1036 ms

home-4.jpg

home-4.jpg

1034 ms

asset_composer.js

asset_composer.js

456 ms

1-Laboratorium-vacatures_1564_1000x600.jpg

1-Laboratorium-vacatures_1564_1000x600.jpg

996 ms

bx_loader.gif

bx_loader.gif

943 ms

controls.png

controls.png

943 ms

common.js

common.js

68 ms

util.js

util.js

529 ms

controls.js

controls.js

528 ms

places_impl.js

places_impl.js

528 ms

anchor

anchor

232 ms

4El2RmCOOVb7qvd5txtNaKgnFY96oyOU

4El2RmCOOVb7qvd5txtNaKgnFY96oyOU

467 ms

styles__ltr.css

styles__ltr.css

58 ms

recaptcha__en.js

recaptcha__en.js

102 ms

powered-by-google-on-white3.png

powered-by-google-on-white3.png

342 ms

autocomplete-icons.png

autocomplete-icons.png

347 ms

webworker.js

webworker.js

193 ms

logo_48.png

logo_48.png

144 ms

KFOmCnqEu92Fr1Mu4mxP.ttf

KFOmCnqEu92Fr1Mu4mxP.ttf

498 ms

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

KFOlCnqEu92Fr1MmEU9fBBc9.ttf

522 ms

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

KFOlCnqEu92Fr1MmYUtfBBc9.ttf

523 ms

recaptcha__en.js

recaptcha__en.js

393 ms

widget_v2.334.js

widget_v2.334.js

149 ms

143 ms

Accessibility Review

checkmark.nl accessibility score

87

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

checkmark.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

SEO Factors

checkmark.nl SEO score

86

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

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

    NL

  • Encoding

    UTF-8

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

checkmark.nl

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