Access rivierzeilen.nl. Stevenaak Helena - Het oudste zeilende binnenvaartschip van Nederland

name

value

score

weighting

FCP (First Contentful Paint)

Value8.8 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value11.8 s

4/100

10%

TBT (Total Blocking Time)

Value1,860 ms

9/100

30%

CLS (Cumulative Layout Shift)

Value0.041

99/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

rivierzeilen.nl

1245 ms

system.base.css

647 ms

system.menus.css

567 ms

system.messages.css

569 ms

system.theme.css

670 ms

Our browser made a total of 89 requests to load all elements on the main page. We found that 56% of them (50 requests) were addressed to the original Rivierzeilen.nl, 26% (23 requests) were made to Static.xx.fbcdn.net and 6% (5 requests) were made to Scontent.xx.fbcdn.net. The less responsive or slowest element that took the longest time to load (1.9 sec) belongs to the original domain Rivierzeilen.nl.

Content Size

1.2 MB

After Optimization

608.0 kB

In fact, the total size of Rivierzeilen.nl main page is 1.2 MB. This result falls beyond the top 1M of websites and identifies a large and not optimized web page that may take ages to load. 70% of websites need less resources to load. Images take 435.7 kB which makes up the majority of the site volume.

HTML Optimization

-76%

Potential reduce by 17.9 kB

Original 23.5 kB
After minification 22.3 kB
After compression 5.6 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. 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 17.9 kB or 76% of the original size.

Image Optimization

-3%

Potential reduce by 12.6 kB

Original 435.7 kB
After minification 423.1 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. Rivierzeilen images are well optimized though.

JavaScript Optimization

-71%

Potential reduce by 292.7 kB

Original 412.6 kB
After minification 362.3 kB
After compression 119.9 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 292.7 kB or 71% of the original size.

CSS Optimization

-82%

Potential reduce by 277.2 kB

Original 336.4 kB
After minification 312.1 kB
After compression 59.3 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. Rivierzeilen.nl needs all CSS files to be minified and compressed as it can save up to 277.2 kB or 82% of the original size.

Requests Now

After Optimization

The browser has sent 86 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Rivierzeilen. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 27 to 1 for JavaScripts and from 30 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 keyboard navigation in your application.

High

[id] attributes on active, focusable elements are not unique

High

Heading elements are not in a sequentially-descending order

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

High

ARIA IDs are not unique

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

Links do not have a discernible name

These items highlight common accessibility best practices.

High

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

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

Displays images with incorrect aspect ratio

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

Search Engine Optimization Advices

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

High

Links are not crawlable

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/).

High

Document uses legible font sizes

High

Tap targets are not sized appropriately

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 Rivierzeilen.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 Rivierzeilen.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

rivierzeilen.nl

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

Report Summary

Performance

Accessibility

Best Practices

SEO

Stevenaak Helena - Het oudste zeilende binnenvaartschip van Nederland

Page Load Speed

First Response

Resources Loaded

Page Rendered

About Website

Key Findings

Performance Metrics

Measured Metrics

FCP (First Contentful Paint)

LCP (Largest Contentful Paint)

SI (Speed Index)

TBT (Total Blocking Time)

CLS (Cumulative Layout Shift)

TTI (Time to Interactive)

Network Requests Diagram

rivierzeilen.nl

system.base.css

system.menus.css

system.messages.css

system.theme.css

Page Optimization Overview & Recommendations

Content Size

After Optimization

HTML Optimization

Image Optimization

JavaScript Optimization

CSS Optimization

Requests Breakdown

Requests Now

After Optimization

Network Requests Diagram

rivierzeilen.nl

system.base.css

system.menus.css

system.messages.css

system.theme.css

views_slideshow.css

calendar_multiday.css

comment.css

date.css

datepicker.1.7.css

field.css

node.css

search.css

user.css

views.css

ckeditor.css

colorbox_style.css

ctools.css

printlinks.css

views_slideshow_cycle.css

layout.css

style.css

colors.css

print.css

jquery.js

jquery.once.js

drupal.js

views_slideshow.js

admin_devel.js

nl_LQR4Ckagd79Y8ykOMptkoLQ-70nxBXQMvAISZhaZvXA.js

colorbox.js

colorbox_style.js

jquery.cycle.all.js

json2.js

views_slideshow_cycle.js

transparant.gif

nieuwsbrief_aanmelden.jpg

rondleiding_helena.jpg

logo_rivierzeilen_5_0.png

search-button.png

helena644b_bnr.jpg

helena_763_b.jpg

helena475b_bnr_0.jpg