Tools & Wizards About Us
herbertbv.nl screenshot

Report Summary

  • 76

    Performance

    Renders faster than
    85% of other websites

  • 87

    Accessibility

    Visual factors better than
    that of 67% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

herbertbv.nl

Herbert Installatietechniek - Voor écht vakmanschap

Page Load Speed

2 sec in total

First Response

348 ms

Resources Loaded

1.5 sec

Page Rendered

153 ms

herbertbv.nl screenshot

About Website

Click here to check amazing Herbert Bv content. Otherwise, check out these important facts you probably never knew about herbertbv.nl

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Visit herbertbv.nl

Key Findings

We analyzed Herbertbv.nl page load time and found that the first response time was 348 ms and then it took 1.6 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 30% of websites can load faster.

Performance Metrics

herbertbv.nl performance score

76

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.6 s

65/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

28/100

25%

SI (Speed Index)

Value2.7 s

96/100

10%

TBT (Total Blocking Time)

Value110 ms

97/100

30%

CLS (Cumulative Layout Shift)

Value0.02

100/100

15%

TTI (Time to Interactive)

Value3.8 s

89/100

10%

Network Requests Diagram

herbertbv.nl

348 ms

www.herbertinstallatie.nl

311 ms

jquery.min.js

6 ms

StyleSheet.css

204 ms

css

25 ms

Our browser made a total of 19 requests to load all elements on the main page. We found that 5% of them (1 request) were addressed to the original Herbertbv.nl, 53% (10 requests) were made to Herbertinstallatie.nl and 21% (4 requests) were made to Fonts.gstatic.com. The less responsive or slowest element that took the longest time to load (542 ms) relates to the external source Herbertinstallatie.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 29.1 kB (11%)

Content Size

267.4 kB

After Optimization

238.3 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Herbertbv.nl main page is 267.4 kB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 35% of websites need less resources to load. Images take 228.2 kB which makes up the majority of the site volume.

HTML Optimization

-78%

Potential reduce by 8.7 kB

  • Original 11.1 kB
  • After minification 8.3 kB
  • After compression 2.4 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 2.8 kB, which is 26% 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 8.7 kB or 78% of the original size.

Image Optimization

-6%

Potential reduce by 14.4 kB

  • Original 228.2 kB
  • After minification 213.8 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. Herbert Bv images are well optimized though.

JavaScript Optimization

-0%

Potential reduce by 49 B

  • Original 20.1 kB
  • After minification 20.1 kB
  • After compression 20.0 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

-74%

Potential reduce by 5.9 kB

  • Original 8.0 kB
  • After minification 7.0 kB
  • After compression 2.1 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. Herbertbv.nl needs all CSS files to be minified and compressed as it can save up to 5.9 kB or 74% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

13

After Optimization

13

  • Images
  • JavaScript
  • CSS

The browser has sent 13 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Herbert Bv. According to our analytics all requests are already optimized.

Network Requests Diagram

herbertbv.nl

herbertbv.nl

348 ms

www.herbertinstallatie.nl

www.herbertinstallatie.nl

311 ms

jquery.min.js

jquery.min.js

6 ms

StyleSheet.css

StyleSheet.css

204 ms

css

css

25 ms

analytics.js

analytics.js

39 ms

sanitair-katwijk.jpg

sanitair-katwijk.jpg

185 ms

installatiebedrijf-katwijk.png

installatiebedrijf-katwijk.png

262 ms

installateur-katwijk-1.png

installateur-katwijk-1.png

517 ms

content-top.png

content-top.png

182 ms

cv-ketel-katwijk.jpg

cv-ketel-katwijk.jpg

183 ms

dakbedekking-katwijk.jpg

dakbedekking-katwijk.jpg

267 ms

uneto-vni.png

uneto-vni.png

334 ms

badkamer-katwijk-actie.png

badkamer-katwijk-actie.png

542 ms

0XxGQsSc1g4rdRdjJKZrNC3USBnSvpkopQaUR-2r7iU.ttf

0XxGQsSc1g4rdRdjJKZrNC3USBnSvpkopQaUR-2r7iU.ttf

23 ms

FUDHvzEKSJww3kCxuiAo2A.ttf

FUDHvzEKSJww3kCxuiAo2A.ttf

23 ms

lILlYDvubYemzYzN7GbLkInF5uFdDttMLvmWuJdhhgs.ttf

lILlYDvubYemzYzN7GbLkInF5uFdDttMLvmWuJdhhgs.ttf

24 ms

PIPMHY90P7jtyjpXuZ2cLKCWcynf_cDxXwCLxiixG1c.ttf

PIPMHY90P7jtyjpXuZ2cLKCWcynf_cDxXwCLxiixG1c.ttf

41 ms

collect

collect

13 ms

Accessibility Review

herbertbv.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.

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

Best Practices

herbertbv.nl best practices score

75

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

User Experience

Impact

Issue

High

Serves images with low resolution

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

herbertbv.nl SEO score

77

Search Engine Optimization Advices

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 Herbertbv.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 Herbertbv.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

herbertbv.nl

Open Graph description is not detected on the main page of Herbert Bv. 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: