Access oabv.nl. OABv | Opleidings- en Adviesbureau voor de Bedrijfshulpverlening en veiligheid

name

value

score

weighting

FCP (First Contentful Paint)

Value3.3 s

41/100

10%

LCP (Largest Contentful Paint)

Value4.9 s

29/100

25%

SI (Speed Index)

Value8.3 s

19/100

10%

TBT (Total Blocking Time)

Value9,020 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.191

64/100

15%

TTI (Time to Interactive)

Value18.3 s

3/100

10%

oabv.nl

397 ms

oabv.nl

1005 ms

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

116 ms

css_bsCHdceFgE-exT-jjxD1jfZnXvfaJzlU6fc1yqkv2AQ.css

226 ms

css_YWFUistCCtnIjolZf7s5iT26WL_HtK31fhWAPcBMOM4.css

288 ms

Our browser made a total of 45 requests to load all elements on the main page. We found that 69% of them (31 requests) were addressed to the original Oabv.nl, 22% (10 requests) were made to Use.typekit.com and 4% (2 requests) were made to Ssl.google-analytics.com. The less responsive or slowest element that took the longest time to load (1 sec) belongs to the original domain Oabv.nl.

Content Size

19.7 kB

After Optimization

19.6 kB

In fact, the total size of Oabv.nl main page is 19.7 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. 30% of websites need less resources to load. Javascripts take 19.7 kB which makes up the majority of the site volume.

HTML Optimization

-0%

Potential reduce by -8 B

Original 0 B

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 web page is already compressed.

JavaScript Optimization

-1%

Potential reduce by 109 B

Original 19.7 kB
After minification 19.7 kB
After compression 19.6 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.

Requests Now

After Optimization

The browser has sent 34 CSS, Javascripts, AJAX and image requests in order to completely render the main page of OABv. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 5 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Accessibility Issues

These are opportunities to improve the legibility of your content.

High

Background and foreground colors do not have a sufficient contrast ratio.

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.

High

<frame> or <iframe> elements do not have a title

High

Links do not have a discernible name

These are opportunities to improve the interpretation of your content by users in different locales.

High

<html> element does not have a [lang] attribute

Areas of Improvement

High

Does not use HTTPS

High

Includes front-end JavaScript libraries with known security vulnerabilities

Low

Ensure CSP is effective against XSS attacks

High

Serves images with low resolution

Low

Detected JavaScript libraries

Search Engine Optimization Advices

To appear in search results, crawlers need access to your app.

High

Links are not crawlable

Language and Encoding

Language Detected

NL
Language Claimed

N/A
Encoding

ISO-8859-1

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Oabv.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 Oabv.nl main page’s claimed encoding is iso-8859-1. Changing it to UTF-8 can be a good choice, as this format is commonly used for encoding all over the web and thus their visitors won’t have any troubles with symbol transcription or reading.

Social Sharing Optimization

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