Tools & Wizards About Us
bouw-energie.be screenshot

Report Summary

  • 49

    Performance

    Renders faster than
    67% of other websites

  • 88

    Accessibility

    Visual factors better than
    that of 68% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    55% of websites

  • 89

    SEO

    Google-friendlier than
    66% of websites

bouw-energie.be

Bouw-Energie

Page Load Speed

3 sec in total

First Response

315 ms

Resources Loaded

2.3 sec

Page Rendered

372 ms

bouw-energie.be screenshot

About Website

Click here to check amazing Bouw Energie content for Belgium. Otherwise, check out these important facts you probably never knew about bouw-energie.be

Bereken zelf het K-peil, E-peil en energieverbruik van uw woning met onze gratis rekenmodules

Visit bouw-energie.be

Key Findings

We analyzed Bouw-energie.be page load time and found that the first response time was 315 ms and then it took 2.7 sec to load all DOM resources and completely render a web page. This is a poor result, as 50% of websites can load faster.

Performance Metrics

bouw-energie.be performance score

49

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.5 s

66/100

10%

LCP (Largest Contentful Paint)

Value7.4 s

4/100

25%

SI (Speed Index)

Value4.9 s

65/100

10%

TBT (Total Blocking Time)

Value430 ms

65/100

30%

CLS (Cumulative Layout Shift)

Value0.177

68/100

15%

TTI (Time to Interactive)

Value7.3 s

49/100

10%

Network Requests Diagram

bouw-energie.be

315 ms

92 ms

nl-be

129 ms

js

67 ms

open-sans.css

99 ms

Our browser made a total of 60 requests to load all elements on the main page. We found that 97% of them (58 requests) were addressed to the original Bouw-energie.be, 2% (1 request) were made to Googletagmanager.com and 2% (1 request) were made to Static.hotjar.com. The less responsive or slowest element that took the longest time to load (724 ms) belongs to the original domain Bouw-energie.be.

Page Optimization Overview & Recommendations

Page size can be reduced by 699.1 kB (44%)

Content Size

1.6 MB

After Optimization

876.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Bouw-energie.be 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. 60% of websites need less resources to load. Images take 802.6 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 47.2 kB

  • Original 53.6 kB
  • After minification 31.8 kB
  • After compression 6.4 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 21.8 kB, which is 41% 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 47.2 kB or 88% of the original size.

Image Optimization

-8%

Potential reduce by 62.7 kB

  • Original 802.6 kB
  • After minification 739.9 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. Bouw Energie images are well optimized though.

JavaScript Optimization

-72%

Potential reduce by 163.0 kB

  • Original 226.3 kB
  • After minification 202.0 kB
  • After compression 63.2 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 163.0 kB or 72% of the original size.

CSS Optimization

-86%

Potential reduce by 426.2 kB

  • Original 493.5 kB
  • After minification 407.8 kB
  • After compression 67.3 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. Bouw-energie.be needs all CSS files to be minified and compressed as it can save up to 426.2 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 27 (53%)

Requests Now

51

After Optimization

24

  • Images
  • JavaScript
  • CSS

The browser has sent 51 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Bouw Energie. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 13 to 1 for JavaScripts and from 16 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

bouw-energie.be

bouw-energie.be

315 ms

92 ms

nl-be

nl-be

129 ms

js

js

67 ms

open-sans.css

open-sans.css

99 ms

bootstrap.min.css

bootstrap.min.css

367 ms

style.css

style.css

275 ms

header-default.css

header-default.css

365 ms

footer-v1.css

footer-v1.css

281 ms

animate.css

animate.css

460 ms

line-icons.css

line-icons.css

283 ms

font-awesome.min.css

font-awesome.min.css

453 ms

masterslider.css

masterslider.css

373 ms

style.css

style.css

373 ms

owl.carousel.css

owl.carousel.css

470 ms

default.css

default.css

455 ms

custom_web_be.css

custom_web_be.css

471 ms

jquery.min.js

jquery.min.js

644 ms

jquery-migrate.min.js

jquery-migrate.min.js

544 ms

bootstrap.min.js

bootstrap.min.js

549 ms

back-to-top.js

back-to-top.js

548 ms

smoothScroll.js

smoothScroll.js

558 ms

wow.min.js

wow.min.js

563 ms

owl.carousel.js

owl.carousel.js

724 ms

custom.js

custom.js

641 ms

app.js

app.js

640 ms

owl-carousel.js

owl-carousel.js

649 ms

navigation_web.js

navigation_web.js

652 ms

app.css

app.css

463 ms

blocks.css

blocks.css

465 ms

style-switcher.css

style-switcher.css

471 ms

hotjar-570086.js

hotjar-570086.js

225 ms

be-logo-1_nl-be.png

be-logo-1_nl-be.png

165 ms

be-home-background.jpg

be-home-background.jpg

182 ms

be-arrow-left.png

be-arrow-left.png

164 ms

be-arrow-right.png

be-arrow-right.png

165 ms

be-building_720.jpg

be-building_720.jpg

165 ms

be-wrench.png

be-wrench.png

164 ms

be-envelope.png

be-envelope.png

224 ms

aliplast_2024-08-08_10-34-05_t5jpux3k.jpg

aliplast_2024-08-08_10-34-05_t5jpux3k.jpg

317 ms

aliplast_2024-06-28_18-04-17_3vwmadg7.jpg

aliplast_2024-06-28_18-04-17_3vwmadg7.jpg

309 ms

duco_2024-06-28_18-09-58_c18bu7hd.jpg

duco_2024-06-28_18-09-58_c18bu7hd.jpg

223 ms

omslagpunt-bij-hybride-systemen-met-warmtepomp_720.jpg

omslagpunt-bij-hybride-systemen-met-warmtepomp_720.jpg

236 ms

kies-voor-inbouwspots-in-de-keuken-5-redenen-waarom_720.jpg

kies-voor-inbouwspots-in-de-keuken-5-redenen-waarom_720.jpg

283 ms

de-rol-van-zonne-energie-in-het-bereiken-van-energieneutrale-gebouwen_720.jpg

de-rol-van-zonne-energie-in-het-bereiken-van-energieneutrale-gebouwen_720.jpg

318 ms

logo_imec.png

logo_imec.png

316 ms

logo_kuleuven.png

logo_kuleuven.png

335 ms

logo_flanders_investment_and_trade.png

logo_flanders_investment_and_trade.png

375 ms

logo_nav.png

logo_nav.png

404 ms

logo_oved.png

logo_oved.png

416 ms

be-logo-2_nl-be.png

be-logo-2_nl-be.png

413 ms

facebook.png

facebook.png

415 ms

twitter.png

twitter.png

426 ms

map-img.png

map-img.png

465 ms

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-regular.woff

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-regular.woff

333 ms

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-300.woff

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-300.woff

347 ms

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-600.woff

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-600.woff

351 ms

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-700.woff

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-700.woff

351 ms

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-800.woff

open-sans-v14-cyrillic-ext_greek-ext_cyrillic_latin-ext_latin_greek-800.woff

446 ms

fontawesome-webfont.woff

fontawesome-webfont.woff

394 ms

Accessibility Review

bouw-energie.be accessibility score

88

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

bouw-energie.be best practices score

83

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

bouw-energie.be SEO score

89

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

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

    NL

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Bouw-energie.be 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 Bouw-energie.be 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

bouw-energie.be

Open Graph description is not detected on the main page of Bouw Energie. 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: