Tools & Wizards About Us
oabv.nl screenshot

Report Summary

  • 23

    Performance

    Renders faster than
    41% of other websites

  • 83

    Accessibility

    Visual factors better than
    that of 54% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 71

    SEO

    Google-friendlier than
    30% of websites

oabv.nl

OABv | Opleidings- en Adviesbureau voor de Bedrijfshulpverlening en veiligheid

Page Load Speed

3.1 sec in total

First Response

397 ms

Resources Loaded

2.5 sec

Page Rendered

134 ms

oabv.nl screenshot

About Website

Click here to check amazing OABv content. Otherwise, check out these important facts you probably never knew about oabv.nl

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Visit oabv.nl

Key Findings

We analyzed Oabv.nl page load time and found that the first response time was 397 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

oabv.nl performance score

23

Measured Metrics

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%

Network Requests Diagram

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.

Page Optimization Overview & Recommendations

Page size can be reduced by 101 B (1%)

Content Size

19.7 kB

After Optimization

19.6 kB

  • JavaScript

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 Breakdown

Number of requests can be reduced by 8 (24%)

Requests Now

34

After Optimization

26

  • AJAX
  • Images
  • JavaScript
  • CSS

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.

Network Requests Diagram

oabv.nl

oabv.nl

397 ms

oabv.nl

oabv.nl

1005 ms

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

css_pbm0lsQQJ7A7WCCIMgxLho6mI_kBNgznNUWmTWcnfoE.css

116 ms

css_bsCHdceFgE-exT-jjxD1jfZnXvfaJzlU6fc1yqkv2AQ.css

css_bsCHdceFgE-exT-jjxD1jfZnXvfaJzlU6fc1yqkv2AQ.css

226 ms

css_YWFUistCCtnIjolZf7s5iT26WL_HtK31fhWAPcBMOM4.css

css_YWFUistCCtnIjolZf7s5iT26WL_HtK31fhWAPcBMOM4.css

288 ms

css_GuSzyQEvDJjp1jh5jUyY9_8m9WItkZLgsuXvdbzEFXo.css

css_GuSzyQEvDJjp1jh5jUyY9_8m9WItkZLgsuXvdbzEFXo.css

292 ms

js_xAPl0qIk9eowy_iS9tNkCWXLUVoat94SQT48UBCFkyQ.js

js_xAPl0qIk9eowy_iS9tNkCWXLUVoat94SQT48UBCFkyQ.js

388 ms

js_jJapKL9c9B7Psp42a9JG92kPtN1eR7Iv7ymJa6t36Sc.js

js_jJapKL9c9B7Psp42a9JG92kPtN1eR7Iv7ymJa6t36Sc.js

398 ms

cii1tzk.js

cii1tzk.js

120 ms

ga.js

ga.js

122 ms

embed

embed

143 ms

bg_header.jpg

bg_header.jpg

113 ms

logo.png

logo.png

109 ms

slide_02_1.jpg

slide_02_1.jpg

121 ms

slide_07_1.jpg

slide_07_1.jpg

198 ms

slide_03_1.jpg

slide_03_1.jpg

208 ms

slide_04_1.jpg

slide_04_1.jpg

119 ms

slide_06_1.jpg

slide_06_1.jpg

301 ms

slide_01_1.jpg

slide_01_1.jpg

303 ms

slide_overlay.png

slide_overlay.png

218 ms

bg_slide_pager.png

bg_slide_pager.png

219 ms

bullet.gif

bullet.gif

302 ms

menu-leaf.png

menu-leaf.png

318 ms

afb_contact.jpg

afb_contact.jpg

321 ms

slide_07_0.jpg

slide_07_0.jpg

326 ms

slide_01.jpg

slide_01.jpg

403 ms

slide_04.jpg

slide_04.jpg

407 ms

slide_06_0.jpg

slide_06_0.jpg

401 ms

slide_03.jpg

slide_03.jpg

421 ms

slide_02.jpg

slide_02.jpg

423 ms

logo_nibhv2.gif

logo_nibhv2.gif

429 ms

logo_nrr.gif

logo_nrr.gif

503 ms

logo_hok.gif

logo_hok.gif

507 ms

i

i

38 ms

i

i

54 ms

i

i

90 ms

i

i

57 ms

i

i

186 ms

i

i

78 ms

i

i

74 ms

i

i

107 ms

i

i

149 ms

__utm.gif

__utm.gif

19 ms

js

js

63 ms

css_e0Oi8I1L8cGJ7KxcUbimLkO-ivlPDoZXuBZMWKAz5GY.css

css_e0Oi8I1L8cGJ7KxcUbimLkO-ivlPDoZXuBZMWKAz5GY.css

104 ms

Accessibility Review

oabv.nl accessibility score

83

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.

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

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

High

Links do not have a discernible name

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

oabv.nl best practices score

67

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

oabv.nl SEO score

71

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

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

oabv.nl

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: