Tools & Wizards About Us
jolmers.nl screenshot

Report Summary

  • 99

    Performance

    Renders faster than
    96% of other websites

  • 80

    Accessibility

    Visual factors better than
    that of 49% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    35% of websites

  • 92

    SEO

    Google-friendlier than
    74% of websites

jolmers.nl

Uw Code95 en andere cursussen | in Surhuisterveen | Jolmers Opleidingen

Page Load Speed

5 sec in total

First Response

1.4 sec

Resources Loaded

2.7 sec

Page Rendered

896 ms

jolmers.nl screenshot

About Website

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

Jolmers opleidingen verzorgt alle soorten opleidingen en cursussen voor de Code95. Tevens kunt u bij ons terecht voor de ADR basiscursus (stukgoed), ADR tankcursus, ADR verlenging of herhaling en de a...

Visit jolmers.nl

Key Findings

We analyzed Jolmers.nl page load time and found that the first response time was 1.4 sec and then it took 3.6 sec to load all DOM resources and completely render a web page. This is a poor result, as 60% of websites can load faster.

Performance Metrics

jolmers.nl performance score

99

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value1.8 s

91/100

10%

LCP (Largest Contentful Paint)

Value1.8 s

99/100

25%

SI (Speed Index)

Value1.8 s

100/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0

100/100

15%

TTI (Time to Interactive)

Value1.8 s

100/100

10%

Network Requests Diagram

jolmers.nl

1419 ms

style.css

311 ms

style_cursusdata.css

309 ms

jquery.verberg.js

312 ms

volvo.jpg

977 ms

Our browser made a total of 9 requests to load all elements on the main page. We found that 89% of them (8 requests) were addressed to the original Jolmers.nl, 11% (1 request) were made to Jolmers-adr.nl. The less responsive or slowest element that took the longest time to load (1.4 sec) belongs to the original domain Jolmers.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 48.5 kB (16%)

Content Size

301.2 kB

After Optimization

252.8 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Jolmers.nl main page is 301.2 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. Only 5% of websites need less resources to load. Images take 250.9 kB which makes up the majority of the site volume.

HTML Optimization

-88%

Potential reduce by 40.0 kB

  • Original 45.3 kB
  • After minification 38.6 kB
  • After compression 5.4 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 6.7 kB, which is 15% 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 40.0 kB or 88% of the original size.

Image Optimization

-2%

Potential reduce by 4.7 kB

  • Original 250.9 kB
  • After minification 246.1 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. Jolmers images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 72 B

  • Original 183 B
  • After minification 152 B
  • After compression 111 B

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 72 B or 39% of the original size.

CSS Optimization

-76%

Potential reduce by 3.7 kB

  • Original 4.8 kB
  • After minification 3.8 kB
  • After compression 1.2 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. Jolmers.nl needs all CSS files to be minified and compressed as it can save up to 3.7 kB or 76% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

8

After Optimization

8

  • Images
  • JavaScript
  • CSS

The browser has sent 8 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Jolmers. According to our analytics all requests are already optimized.

Network Requests Diagram

jolmers.nl

jolmers.nl

1419 ms

style.css

style.css

311 ms

style_cursusdata.css

style_cursusdata.css

309 ms

jquery.verberg.js

jquery.verberg.js

312 ms

volvo.jpg

volvo.jpg

977 ms

down_arrow.png

down_arrow.png

448 ms

jolmers-opleidingen.png

jolmers-opleidingen.png

1064 ms

crkbo.png

crkbo.png

204 ms

down_arrow.png

down_arrow.png

106 ms

Accessibility Review

jolmers.nl accessibility score

80

Accessibility Issues

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

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

Form elements do not have associated labels

Tables and lists

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Impact

Issue

High

Lists do not contain only <li> elements and script supporting elements (<script> and <template>).

High

List items (<li>) are not contained within <ul> or <ol> parent elements.

Best Practices

jolmers.nl best practices score

75

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

User Experience

Impact

Issue

High

Serves images with low resolution

SEO Factors

jolmers.nl SEO score

92

Search Engine Optimization Advices

Crawling and Indexing

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

Impact

Issue

High

robots.txt is not valid

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

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 Jolmers.nl 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 Jolmers.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

jolmers.nl

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