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presenteren.nu screenshot

Report Summary

  • 75

    Performance

    Renders faster than
    84% of other websites

  • 68

    Accessibility

    Visual factors better than
    that of 33% of websites

  • 75

    Best Practices

    More advanced features
    available than in
    36% of websites

  • 77

    SEO

    Google-friendlier than
    36% of websites

presenteren.nu

Domein Gereserveerd - Mijndomein.nl

Page Load Speed

1.4 sec in total

First Response

288 ms

Resources Loaded

1 sec

Page Rendered

124 ms

presenteren.nu screenshot

About Website

Click here to check amazing Presenteren content. Otherwise, check out these important facts you probably never knew about presenteren.nu

Visit presenteren.nu

Key Findings

We analyzed Presenteren.nu page load time and found that the first response time was 288 ms and then it took 1.1 sec to load all DOM resources and completely render a web page. This is quite a good result, as only 20% of websites can load faster.

Performance Metrics

presenteren.nu performance score

75

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.6 s

31/100

10%

LCP (Largest Contentful Paint)

Value4.4 s

39/100

25%

SI (Speed Index)

Value3.6 s

86/100

10%

TBT (Total Blocking Time)

Value0 ms

100/100

30%

CLS (Cumulative Layout Shift)

Value0.002

100/100

15%

TTI (Time to Interactive)

Value4.4 s

83/100

10%

Network Requests Diagram

presenteren.nu

288 ms

ISGroup.aspx

176 ms

template.css

173 ms

content-grp.css

174 ms

O365-v3.jpg

643 ms

Our browser made a total of 12 requests to load all elements on the main page. We found that all of those requests were addressed to Presenteren.nu and no external sources were called. The less responsive or slowest element that took the longest time to load (643 ms) belongs to the original domain Presenteren.nu.

Page Optimization Overview & Recommendations

Page size can be reduced by 16.8 kB (14%)

Content Size

121.5 kB

After Optimization

104.7 kB

  • HTML
  • Images
  • CSS

In fact, the total size of Presenteren.nu main page is 121.5 kB. This result falls within a vast category (top 1 000 000) of heavyweight, probably not optimized, and thus slow loading web pages. Only a small number of websites need less resources to load. Images take 117.0 kB which makes up the majority of the site volume.

HTML Optimization

-40%

Potential reduce by 333 B

  • Original 830 B
  • After minification 806 B
  • After compression 497 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. HTML code on this page is well minified. It is highly recommended that content of this web page should be compressed using GZIP, as it can save up to 333 B or 40% of the original size.

Image Optimization

-12%

Potential reduce by 13.8 kB

  • Original 117.0 kB
  • After minification 103.3 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. Obviously, Presenteren needs image optimization as it can save up to 13.8 kB or 12% of the original volume. The most popular and efficient tools for JPEG and PNG image optimization are Jpegoptim and PNG Crush.

CSS Optimization

-75%

Potential reduce by 2.7 kB

  • Original 3.6 kB
  • After minification 2.5 kB
  • After compression 905 B

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. Presenteren.nu needs all CSS files to be minified and compressed as it can save up to 2.7 kB or 75% of the original size.

Requests Breakdown

We found no issues to fix!

Requests Now

11

After Optimization

11

  • AJAX
  • Images
  • CSS

The browser has sent 11 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Presenteren. According to our analytics all requests are already optimized.

Network Requests Diagram

presenteren.nu

presenteren.nu

288 ms

ISGroup.aspx

ISGroup.aspx

176 ms

template.css

template.css

173 ms

content-grp.css

content-grp.css

174 ms

O365-v3.jpg

O365-v3.jpg

643 ms

is-logo.png

is-logo.png

90 ms

content-block-t.png

content-block-t.png

91 ms

content-block-m.png

content-block-m.png

89 ms

content-block-b.png

content-block-b.png

173 ms

checker-block-l.png

checker-block-l.png

175 ms

checker-block-m.png

checker-block-m.png

175 ms

checker-block-r.png

checker-block-r.png

175 ms

Accessibility Review

presenteren.nu accessibility score

68

Accessibility Issues

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

Buttons do not have an accessible name

High

Links do not have a discernible name

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.

Best practices

These items highlight common accessibility best practices.

Impact

Issue

High

[user-scalable="no"] is used in the <meta name="viewport"> element or the [maximum-scale] attribute is less than 5.

Best Practices

presenteren.nu 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

General

Impact

Issue

Low

Detected JavaScript libraries

SEO Factors

presenteren.nu SEO score

77

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

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

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Presenteren.nu 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 Presenteren.nu 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

presenteren.nu

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