Tools & Wizards About Us
rekenblobs.nl screenshot

Report Summary

  • 33

    Performance

    Renders faster than
    53% of other websites

  • 86

    Accessibility

    Visual factors better than
    that of 62% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    81% of websites

  • 91

    SEO

    Google-friendlier than
    71% of websites

rekenblobs.nl

Rekenblobs

Page Load Speed

4.8 sec in total

First Response

765 ms

Resources Loaded

3.6 sec

Page Rendered

425 ms

rekenblobs.nl screenshot

About Website

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

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Key Findings

We analyzed Rekenblobs.nl page load time and found that the first response time was 765 ms and then it took 4 sec to load all DOM resources and completely render a web page. This is a poor result, as 65% of websites can load faster.

Performance Metrics

rekenblobs.nl performance score

33

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value6.3 s

3/100

10%

LCP (Largest Contentful Paint)

Value17.0 s

0/100

25%

SI (Speed Index)

Value10.4 s

8/100

10%

TBT (Total Blocking Time)

Value400 ms

68/100

30%

CLS (Cumulative Layout Shift)

Value0.159

73/100

15%

TTI (Time to Interactive)

Value14.9 s

8/100

10%

Network Requests Diagram

www.rekenblobs.nl

765 ms

css

27 ms

css

39 ms

style_for_map.css

104 ms

calendar-jos.css

196 ms

Our browser made a total of 62 requests to load all elements on the main page. We found that 71% of them (44 requests) were addressed to the original Rekenblobs.nl, 16% (10 requests) were made to Fonts.gstatic.com and 10% (6 requests) were made to Fonts.googleapis.com. The less responsive or slowest element that took the longest time to load (789 ms) belongs to the original domain Rekenblobs.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 808.2 kB (46%)

Content Size

1.7 MB

After Optimization

933.7 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Rekenblobs.nl main page is 1.7 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. 45% of websites need less resources to load. Images take 789.3 kB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 18.2 kB

  • Original 23.0 kB
  • After minification 19.8 kB
  • After compression 4.8 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. This page needs HTML code to be minified as it can gain 3.2 kB, which is 14% 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 18.2 kB or 79% of the original size.

Image Optimization

-6%

Potential reduce by 45.0 kB

  • Original 789.3 kB
  • After minification 744.3 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. Rekenblobs images are well optimized though.

JavaScript Optimization

-79%

Potential reduce by 589.4 kB

  • Original 745.4 kB
  • After minification 570.0 kB
  • After compression 156.1 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 589.4 kB or 79% of the original size.

CSS Optimization

-85%

Potential reduce by 155.7 kB

  • Original 184.2 kB
  • After minification 137.4 kB
  • After compression 28.5 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. Rekenblobs.nl needs all CSS files to be minified and compressed as it can save up to 155.7 kB or 85% of the original size.

Requests Breakdown

Number of requests can be reduced by 31 (61%)

Requests Now

51

After Optimization

20

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rekenblobs. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 15 to 1 for JavaScripts and from 18 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

www.rekenblobs.nl

www.rekenblobs.nl

765 ms

css

css

27 ms

css

css

39 ms

style_for_map.css

style_for_map.css

104 ms

calendar-jos.css

calendar-jos.css

196 ms

jquery-ui-spinner.css

jquery-ui-spinner.css

178 ms

style.css

style.css

194 ms

responsive.css

responsive.css

202 ms

jplayer.css

jplayer.css

197 ms

www.rekenblobs.nl

www.rekenblobs.nl

476 ms

css

css

45 ms

css

css

44 ms

jquery.js

jquery.js

367 ms

jquery-migrate.min.js

jquery-migrate.min.js

289 ms

upgrade.js

upgrade.js

284 ms

main_front_end.js

main_front_end.js

304 ms

calendar.js

calendar.js

302 ms

calendar-setup.js

calendar-setup.js

376 ms

calendar_function.js

calendar_function.js

375 ms

jquery-ui.js

jquery-ui.js

725 ms

jquery.ui.slider.js

jquery.ui.slider.js

411 ms

menus.js

menus.js

455 ms

fitvid.js

fitvid.js

479 ms

theme.js

theme.js

465 ms

portfolio.js

portfolio.js

505 ms

slider.js

slider.js

549 ms

style.css

style.css

463 ms

reset.css

reset.css

114 ms

clearfix.css

clearfix.css

95 ms

social.css

social.css

97 ms

editor-style.css

editor-style.css

87 ms

css

css

14 ms

css

css

15 ms

analytics.js

analytics.js

92 ms

naamlogo8.png

naamlogo8.png

135 ms

bg1.jpg

bg1.jpg

189 ms

logo_draft22.png

logo_draft22.png

279 ms

rb_1200x500.jpg

rb_1200x500.jpg

409 ms

slider-arrows.png

slider-arrows.png

95 ms

webbased2.png

webbased2.png

120 ms

voortgang.png

voortgang.png

129 ms

adaptief2.png

adaptief2.png

186 ms

rekenfoutje.jpg

rekenfoutje.jpg

334 ms

voortgangstoets-660x495.png

voortgangstoets-660x495.png

789 ms

stores.png

stores.png

447 ms

aanmelden6.png

aanmelden6.png

277 ms

Internet1-660x495.jpg

Internet1-660x495.jpg

469 ms

plusminicon.png

plusminicon.png

452 ms

quote-icon.png

quote-icon.png

430 ms

P1040370-150x150.jpg

P1040370-150x150.jpg

503 ms

up-arrow.png

up-arrow.png

524 ms

IQHow_FEYlDC4Gzy_m8fcvEr6Hm6RMS0v1dtXsGir4g.ttf

IQHow_FEYlDC4Gzy_m8fcvEr6Hm6RMS0v1dtXsGir4g.ttf

23 ms

zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf

zhcz-_WihjSQC0oHJ9TCYC3USBnSvpkopQaUR-2r7iU.ttf

24 ms

s-BiyweUPV0v-yRb-cjciC3USBnSvpkopQaUR-2r7iU.ttf

s-BiyweUPV0v-yRb-cjciC3USBnSvpkopQaUR-2r7iU.ttf

24 ms

EFpQQyG9GqCrobXxL-KRMfEr6Hm6RMS0v1dtXsGir4g.ttf

EFpQQyG9GqCrobXxL-KRMfEr6Hm6RMS0v1dtXsGir4g.ttf

37 ms

RFda8w1V0eDZheqfcyQ4EInF5uFdDttMLvmWuJdhhgs.ttf

RFda8w1V0eDZheqfcyQ4EInF5uFdDttMLvmWuJdhhgs.ttf

40 ms

ZvcMqxEwPfh2qDWBPxn6nn06qf9KHRHwsVx7iw5MXmY.ttf

ZvcMqxEwPfh2qDWBPxn6nn06qf9KHRHwsVx7iw5MXmY.ttf

37 ms

So5lHxHT37p2SS4-t60SlCtfYakCkPqOMDce0h_3gD8.ttf

So5lHxHT37p2SS4-t60SlCtfYakCkPqOMDce0h_3gD8.ttf

37 ms

EYh7Vl4ywhowqULgRdYwICxQL91WRy8t8mPvAX_dIgA.ttf

EYh7Vl4ywhowqULgRdYwICxQL91WRy8t8mPvAX_dIgA.ttf

35 ms

V86VyqXbc09Sss3BPsMj16CWcynf_cDxXwCLxiixG1c.ttf

V86VyqXbc09Sss3BPsMj16CWcynf_cDxXwCLxiixG1c.ttf

36 ms

Yir4ZDsCn4g1kWopdg-ehInF5uFdDttMLvmWuJdhhgs.ttf

Yir4ZDsCn4g1kWopdg-ehInF5uFdDttMLvmWuJdhhgs.ttf

38 ms

collect

collect

21 ms

Accessibility Review

rekenblobs.nl accessibility score

86

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

Buttons do not have an accessible name

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

Best Practices

rekenblobs.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

rekenblobs.nl SEO score

91

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Rekenblobs.nl can be misinterpreted by Google and other search engines. Our service has detected that English 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 Rekenblobs.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

rekenblobs.nl

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