Tools & Wizards About Us
corbuist.nl screenshot

Report Summary

  • 31

    Performance

    Renders faster than
    51% of other websites

  • 89

    Accessibility

    Visual factors better than
    that of 71% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 95

    SEO

    Google-friendlier than
    90% of websites

corbuist.nl

Cor Buist | Groningen | Schilders, Restauratie en onderhoudswerken

Page Load Speed

6.5 sec in total

First Response

283 ms

Resources Loaded

6.1 sec

Page Rendered

153 ms

corbuist.nl screenshot

About Website

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

Cor Buist gespecialiseerd in glas- en schilderwerken, restauratie- en imitatietechnieken, onderhoudswerken en vloer- en wandafwerking.

Visit corbuist.nl

Key Findings

We analyzed Corbuist.nl page load time and found that the first response time was 283 ms and then it took 6.3 sec to load all DOM resources and completely render a web page. This is a poor result, as 80% of websites can load faster.

Performance Metrics

corbuist.nl performance score

31

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.2 s

78/100

10%

LCP (Largest Contentful Paint)

Value6.7 s

8/100

25%

SI (Speed Index)

Value7.3 s

29/100

10%

TBT (Total Blocking Time)

Value2,270 ms

6/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value12.3 s

15/100

10%

Network Requests Diagram

corbuist.nl

283 ms

www.corbuist.nl

457 ms

general.css

203 ms

onepage-scroll.css

208 ms

menu.css

211 ms

Our browser made a total of 185 requests to load all elements on the main page. We found that 56% of them (103 requests) were addressed to the original Corbuist.nl, 22% (40 requests) were made to Google-analytics.com and 6% (12 requests) were made to Maps.googleapis.com. The less responsive or slowest element that took the longest time to load (2.9 sec) belongs to the original domain Corbuist.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.0 MB (17%)

Content Size

6.0 MB

After Optimization

5.0 MB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Corbuist.nl main page is 6.0 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 4.6 MB which makes up the majority of the site volume.

HTML Optimization

-79%

Potential reduce by 22.6 kB

  • Original 28.6 kB
  • After minification 26.7 kB
  • After compression 6.0 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 22.6 kB or 79% of the original size.

Image Optimization

-1%

Potential reduce by 36.3 kB

  • Original 4.6 MB
  • After minification 4.6 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. Cor Buist images are well optimized though.

JavaScript Optimization

-68%

Potential reduce by 743.0 kB

  • Original 1.1 MB
  • After minification 1.1 MB
  • After compression 356.7 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 743.0 kB or 68% of the original size.

CSS Optimization

-83%

Potential reduce by 223.7 kB

  • Original 269.9 kB
  • After minification 265.5 kB
  • After compression 46.3 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. Corbuist.nl needs all CSS files to be minified and compressed as it can save up to 223.7 kB or 83% of the original size.

Requests Breakdown

Number of requests can be reduced by 77 (43%)

Requests Now

178

After Optimization

101

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 178 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Cor Buist. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 24 to 1 for JavaScripts and from 7 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

corbuist.nl

corbuist.nl

283 ms

www.corbuist.nl

www.corbuist.nl

457 ms

general.css

general.css

203 ms

onepage-scroll.css

onepage-scroll.css

208 ms

menu.css

menu.css

211 ms

formato.css

formato.css

222 ms

jquery-1.11.1.min.js

jquery-1.11.1.min.js

327 ms

jquery.nicescroll.min.js

jquery.nicescroll.min.js

311 ms

onepagescroll.js

onepagescroll.js

399 ms

general.js

general.js

379 ms

home.html

home.html

114 ms

corbuist01.html

corbuist01.html

228 ms

corbuist02.html

corbuist02.html

229 ms

corbuist03.html

corbuist03.html

233 ms

schilderwerk01.html

schilderwerk01.html

224 ms

schilderwerk02.html

schilderwerk02.html

226 ms

schilderwerk03.html

schilderwerk03.html

308 ms

schilderwerk04.html

schilderwerk04.html

399 ms

schilderwerk05.html

schilderwerk05.html

397 ms

onderhoud01.html

onderhoud01.html

397 ms

onderhoud02.html

onderhoud02.html

392 ms

onderhoud03.html

onderhoud03.html

452 ms

bevingsschade01.html

bevingsschade01.html

512 ms

bevingsschade02.html

bevingsschade02.html

625 ms

bevingsschade03.html

bevingsschade03.html

581 ms

bevingsschade04.html

bevingsschade04.html

582 ms

restauratie01.html

restauratie01.html

624 ms

restauratie02.html

restauratie02.html

621 ms

restauratie03.html

restauratie03.html

695 ms

restauratie04.html

restauratie04.html

729 ms

restauratie05.html

restauratie05.html

731 ms

restauratie06.html

restauratie06.html

789 ms

restauratiedue01.html

restauratiedue01.html

790 ms

restauratiedue02.html

restauratiedue02.html

791 ms

restauratiedue03.html

restauratiedue03.html

856 ms

restauratiedue04.html

restauratiedue04.html

911 ms

restauratiedue05.html

restauratiedue05.html

913 ms

restauratiedue06.html

restauratiedue06.html

951 ms

restauratiedue07.html

restauratiedue07.html

956 ms

restauratiedue08.html

restauratiedue08.html

967 ms

beglazing01.html

beglazing01.html

1039 ms

beglazing02.html

beglazing02.html

1093 ms

beglazing03.html

beglazing03.html

1089 ms

restauratiepoppenhuis01.html

restauratiepoppenhuis01.html

1142 ms

4G73UgW2Exg

4G73UgW2Exg

119 ms

restauratiepoppenhuis02.html

restauratiepoppenhuis02.html

1134 ms

embed

embed

190 ms

restauratiepoppenhuis03.html

restauratiepoppenhuis03.html

1123 ms

analytics.js

analytics.js

40 ms

collect

collect

12 ms

restauratiepoppenhuis04.html

restauratiepoppenhuis04.html

1130 ms

www-embed-player-vflfNyN_r.css

www-embed-player-vflfNyN_r.css

27 ms

www-embed-player.js

www-embed-player.js

51 ms

base.js

base.js

90 ms

js

js

133 ms

init_embed.js

init_embed.js

131 ms

contact.html

contact.html

1063 ms

image.css

image.css

1084 ms

jquery.backstretch.js

jquery.backstretch.js

1211 ms

images.js

images.js

1217 ms

cor-buist-groningen.jpg

cor-buist-groningen.jpg

1330 ms

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

Tqng9ngJVK4Gqvh3e602hP-HqlN49KFEUSDtmrOPmWo.js

14 ms

ad_status.js

ad_status.js

87 ms

zN7GBFwfMP4uA6AR0HCoLQ.ttf

zN7GBFwfMP4uA6AR0HCoLQ.ttf

81 ms

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

RxZJdnzeo3R5zSexge8UUaCWcynf_cDxXwCLxiixG1c.ttf

87 ms

arrow.png

arrow.png

1255 ms

menu-close.png

menu-close.png

1167 ms

close.png

close.png

1166 ms

top_left.png

top_left.png

1167 ms

top_right.png

top_right.png

1165 ms

common.js

common.js

49 ms

map.js

map.js

50 ms

google4.png

google4.png

21 ms

overlay.js

overlay.js

18 ms

util.js

util.js

73 ms

onion.js

onion.js

16 ms

search_impl.js

search_impl.js

17 ms

bottom_left.png

bottom_left.png

1173 ms

stats.js

stats.js

32 ms

openhand_8_8.cur

openhand_8_8.cur

26 ms

bottom_right.png

bottom_right.png

1165 ms

ViewportInfoService.GetViewportInfo

ViewportInfoService.GetViewportInfo

45 ms

ViewportInfoService.GetViewportInfo

ViewportInfoService.GetViewportInfo

30 ms

transparent.png

transparent.png

27 ms

kh

kh

64 ms

kh

kh

79 ms

controls.js

controls.js

34 ms

vt

vt

123 ms

vt

vt

121 ms

vt

vt

120 ms

vt

vt

103 ms

vt

vt

103 ms

vt

vt

99 ms

vt

vt

136 ms

vt

vt

138 ms

vt

vt

129 ms

css

css

86 ms

entity11.png

entity11.png

44 ms

mapcnt6.png

mapcnt6.png

37 ms

tmapctrl.png

tmapctrl.png

30 ms

Hgo13k-tfSpn0qi1SFdUfaCWcynf_cDxXwCLxiixG1c.ttf

Hgo13k-tfSpn0qi1SFdUfaCWcynf_cDxXwCLxiixG1c.ttf

4 ms

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

d-6IYplOFocCacKzxwXSOKCWcynf_cDxXwCLxiixG1c.ttf

8 ms

AuthenticationService.Authenticate

AuthenticationService.Authenticate

16 ms

loading.gif

loading.gif

258 ms

corbuist03.jpg

corbuist03.jpg

613 ms

restauratiedue06.jpg

restauratiedue06.jpg

492 ms

contact.jpg

contact.jpg

771 ms

restauratie03.jpg

restauratie03.jpg

440 ms

restauratiedue01.jpg

restauratiedue01.jpg

543 ms

beglazing02.jpg

beglazing02.jpg

456 ms

onderhoud03.jpg

onderhoud03.jpg

811 ms

restauratiedue04.jpg

restauratiedue04.jpg

824 ms

beglazing03.jpg

beglazing03.jpg

975 ms

restauratiedue05.jpg

restauratiedue05.jpg

909 ms

restauratiedue07.jpg

restauratiedue07.jpg

1043 ms

onderhoud02.jpg

onderhoud02.jpg

1118 ms

schilderwerk03.jpg

schilderwerk03.jpg

1083 ms

schilderwerk02.jpg

schilderwerk02.jpg

1253 ms

restauratiepoppenhuis03.jpg

restauratiepoppenhuis03.jpg

1345 ms

restauratiedue02.jpg

restauratiedue02.jpg

1237 ms

restauratie04.jpg

restauratie04.jpg

1599 ms

corbuist02.jpg

corbuist02.jpg

1542 ms

restauratie02.jpg

restauratie02.jpg

1465 ms

restauratiedue08.jpg

restauratiedue08.jpg

1614 ms

restauratiepoppenhuis04.jpg

restauratiepoppenhuis04.jpg

1708 ms

restauratie01.jpg

restauratie01.jpg

1770 ms

bevingsschade02.jpg

bevingsschade02.jpg

1893 ms

schilderwerk01.jpg

schilderwerk01.jpg

1896 ms

corbuist01.jpg

corbuist01.jpg

2059 ms

schilderwerk04.jpg

schilderwerk04.jpg

1823 ms

collect

collect

68 ms

collect

collect

61 ms

collect

collect

65 ms

collect

collect

66 ms

collect

collect

65 ms

collect

collect

68 ms

collect

collect

68 ms

collect

collect

67 ms

collect

collect

68 ms

collect

collect

69 ms

collect

collect

68 ms

bevingsschade01.jpg

bevingsschade01.jpg

1915 ms

schilderwerk05.jpg

schilderwerk05.jpg

2228 ms

restauratiepoppenhuis02.jpg

restauratiepoppenhuis02.jpg

2301 ms

restauratiedue03.jpg

restauratiedue03.jpg

2026 ms

restauratie06.jpg

restauratie06.jpg

2316 ms

beglazing01.jpg

beglazing01.jpg

2425 ms

collect

collect

59 ms

collect

collect

61 ms

collect

collect

60 ms

collect

collect

60 ms

collect

collect

64 ms

collect

collect

62 ms

collect

collect

62 ms

collect

collect

65 ms

collect

collect

65 ms

collect

collect

65 ms

collect

collect

67 ms

collect

collect

65 ms

collect

collect

66 ms

collect

collect

67 ms

collect

collect

66 ms

restauratiepoppenhuis01.jpg

restauratiepoppenhuis01.jpg

2227 ms

collect

collect

16 ms

collect

collect

20 ms

collect

collect

16 ms

collect

collect

21 ms

collect

collect

21 ms

collect

collect

21 ms

collect

collect

22 ms

collect

collect

22 ms

collect

collect

22 ms

collect

collect

24 ms

collect

collect

24 ms

collect

collect

23 ms

bevingsschade03.jpg

bevingsschade03.jpg

2353 ms

onderhoud01.jpg

onderhoud01.jpg

2617 ms

bevingsschade04-1.jpg

bevingsschade04-1.jpg

2541 ms

bevingsschade04-2.jpg

bevingsschade04-2.jpg

2340 ms

home01.jpg

home01.jpg

2846 ms

home02.jpg

home02.jpg

2809 ms

home03.jpg

home03.jpg

2647 ms

home04.jpg

home04.jpg

2903 ms

restauratie051.jpg

restauratie051.jpg

2546 ms

restauratie052.jpg

restauratie052.jpg

2572 ms

Accessibility Review

corbuist.nl accessibility score

89

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

High

Links do not have a discernible 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.

Best Practices

corbuist.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

corbuist.nl SEO score

95

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

    N/A

  • Encoding

    UTF-8

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

corbuist.nl

Open Graph description is not detected on the main page of Cor Buist. Lack of Open Graph description can be counter-productive for their social media presence, as such a description allows converting a website homepage (or other pages) into good-looking, rich and well-structured posts, when it is being shared on Facebook and other social media. For example, adding the following code snippet into HTML <head> tag will help to represent this web page correctly in social networks: