Tools & Wizards About Us
dalessi.nl screenshot

Report Summary

  • 45

    Performance

    Renders faster than
    64% of other websites

  • 82

    Accessibility

    Visual factors better than
    that of 52% of websites

  • 67

    Best Practices

    More advanced features
    available than in
    24% of websites

  • 83

    SEO

    Google-friendlier than
    46% of websites

dalessi.nl

Homepage - Dalessi

Page Load Speed

5.6 sec in total

First Response

374 ms

Resources Loaded

5.1 sec

Page Rendered

116 ms

dalessi.nl screenshot

About Website

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

Ferry very good. This is what we have been for 30 years. Dalessi International Transport BV is the expert in ferry transport.

Visit dalessi.nl

Key Findings

We analyzed Dalessi.nl page load time and found that the first response time was 374 ms and then it took 5.2 sec to load all DOM resources and completely render a web page. This is a poor result, as 75% of websites can load faster.

Performance Metrics

dalessi.nl performance score

45

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value13.3 s

0/100

10%

LCP (Largest Contentful Paint)

Value14.9 s

0/100

25%

SI (Speed Index)

Value25.7 s

0/100

10%

TBT (Total Blocking Time)

Value70 ms

99/100

30%

CLS (Cumulative Layout Shift)

Value0.013

100/100

15%

TTI (Time to Interactive)

Value15.0 s

7/100

10%

Network Requests Diagram

dalessi.nl

374 ms

www.dalessi.nl

2024 ms

Home

1508 ms

css

73 ms

bootstrap.css

354 ms

Our browser made a total of 43 requests to load all elements on the main page. We found that 84% of them (36 requests) were addressed to the original Dalessi.nl, 7% (3 requests) were made to Fonts.gstatic.com and 5% (2 requests) were made to Google-analytics.com. The less responsive or slowest element that took the longest time to load (2 sec) belongs to the original domain Dalessi.nl.

Page Optimization Overview & Recommendations

Page size can be reduced by 737.9 kB (65%)

Content Size

1.1 MB

After Optimization

394.6 kB

  • HTML
  • Images
  • JavaScript
  • CSS

In fact, the total size of Dalessi.nl main page is 1.1 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. 35% of websites need less resources to load. Javascripts take 755.2 kB which makes up the majority of the site volume.

HTML Optimization

-71%

Potential reduce by 10.8 kB

  • Original 15.3 kB
  • After minification 13.3 kB
  • After compression 4.5 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 2.0 kB, which is 13% 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 10.8 kB or 71% of the original size.

Image Optimization

-3%

Potential reduce by 5.9 kB

  • Original 183.6 kB
  • After minification 177.6 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. Dalessi images are well optimized though.

JavaScript Optimization

-75%

Potential reduce by 565.6 kB

  • Original 755.2 kB
  • After minification 573.4 kB
  • After compression 189.6 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. It is highly recommended that all JavaScript files should be compressed and minified as it can save up to 565.6 kB or 75% of the original size.

CSS Optimization

-87%

Potential reduce by 155.6 kB

  • Original 178.5 kB
  • After minification 145.2 kB
  • After compression 22.8 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. Dalessi.nl needs all CSS files to be minified and compressed as it can save up to 155.6 kB or 87% of the original size.

Requests Breakdown

Number of requests can be reduced by 15 (43%)

Requests Now

35

After Optimization

20

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 35 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Dalessi. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 12 to 1 for JavaScripts and from 5 to 1 for CSS and as a result speed up the page load time.

Network Requests Diagram

dalessi.nl

dalessi.nl

374 ms

www.dalessi.nl

www.dalessi.nl

2024 ms

Home

Home

1508 ms

css

css

73 ms

bootstrap.css

bootstrap.css

354 ms

lightbox.css

lightbox.css

362 ms

Styles.css

Styles.css

363 ms

WebResource.axd

WebResource.axd

545 ms

ScriptResource.axd

ScriptResource.axd

547 ms

ScriptResource.axd

ScriptResource.axd

453 ms

jquery-2.1.0.min.js

jquery-2.1.0.min.js

544 ms

jquery-ui-1.10.4.js

jquery-ui-1.10.4.js

974 ms

bootstrap.min.js

bootstrap.min.js

544 ms

lightbox.js

lightbox.js

564 ms

slick.js

slick.js

706 ms

bannerscollection_zoominout.css

bannerscollection_zoominout.css

713 ms

jquery.ui.touch-punch.min.js

jquery.ui.touch-punch.min.js

625 ms

bannerscollection_zoominout.js

bannerscollection_zoominout.js

714 ms

analytics.js

analytics.js

21 ms

close.png

close.png

268 ms

loading.gif

loading.gif

353 ms

prev.png

prev.png

357 ms

next.png

next.png

434 ms

nl.png

nl.png

440 ms

de.png

de.png

441 ms

en.png

en.png

442 ms

logo_dalessi.png

logo_dalessi.png

445 ms

187.jpg

187.jpg

526 ms

2_small.jpg

2_small.jpg

531 ms

25_small.jpg

25_small.jpg

530 ms

logo_dalessi_footer.png

logo_dalessi_footer.png

531 ms

collect

collect

12 ms

js

js

106 ms

glyphicons-halflings-regular.woff

glyphicons-halflings-regular.woff

92 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsiH0B4gaVQ.woff

41 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsjZ0B4gaVQ.woff

49 ms

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVQ.woff

memSYaGs126MiZpBA-UvWbX2vVnXBbObj2OVZyOOSr4dVJWUgsg-1x4gaVQ.woff

52 ms

loader.gif

loader.gif

94 ms

leftNavOFF.png

leftNavOFF.png

93 ms

rightNavOFF.png

rightNavOFF.png

103 ms

play_overOFF.png

play_overOFF.png

91 ms

hand.cur

hand.cur

90 ms

bottomNavOFF.png

bottomNavOFF.png

143 ms

Accessibility Review

dalessi.nl accessibility score

82

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

Image elements do not have [alt] attributes

High

Links do not have a discernible name

Best Practices

dalessi.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

High

Browser errors were logged to the console

SEO Factors

dalessi.nl SEO score

83

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

Content Best Practices

Format your HTML in a way that enables crawlers to better understand your app’s content.

Impact

Issue

High

Image elements do not have [alt] attributes

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

    EN

  • Language Claimed

    N/A

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dalessi.nl can be misinterpreted by Google and other search engines. Our service has detected that English 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 Dalessi.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

dalessi.nl

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