Report Summary

  • 10

    Performance

    Renders faster than
    23% of other websites

  • 94

    Accessibility

    Visual factors better than
    that of 84% of websites

  • 83

    Best Practices

    More advanced features
    available than in
    56% of websites

  • 93

    SEO

    Google-friendlier than
    84% of websites

dfdsseaways.pl

Rejsy i przeprawy promowe w Europie | Promy pasażerskie | DFDS

Page Load Speed

4.9 sec in total

First Response

1.2 sec

Resources Loaded

3.4 sec

Page Rendered

339 ms

dfdsseaways.pl screenshot

About Website

Welcome to dfdsseaways.pl homepage info - get ready to check DFDS Seaways best content for United Kingdom right away, or after learning these important things about dfdsseaways.pl

Planuj i rezerwuj rejsy oraz przeprawy promowe z firmą DFDS w ramach całej naszej europejskiej sieci.

Visit dfdsseaways.pl

Key Findings

We analyzed Dfdsseaways.pl page load time and found that the first response time was 1.2 sec and then it took 3.7 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

dfdsseaways.pl performance score

10

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value2.7 s

59/100

10%

LCP (Largest Contentful Paint)

Value16.0 s

0/100

25%

SI (Speed Index)

Value9.4 s

12/100

10%

TBT (Total Blocking Time)

Value6,430 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.459

19/100

15%

TTI (Time to Interactive)

Value17.0 s

4/100

10%

Network Requests Diagram

www.dfdsseaways.pl

1180 ms

main.css

406 ms

modernizr-2.8.3.min.js

208 ms

jquery.min.js

37 ms

init.js

334 ms

Our browser made a total of 56 requests to load all elements on the main page. We found that 73% of them (41 requests) were addressed to the original Dfdsseaways.pl, 11% (6 requests) were made to Google-analytics.com and 4% (2 requests) were made to Cm.g.doubleclick.net. The less responsive or slowest element that took the longest time to load (1.2 sec) belongs to the original domain Dfdsseaways.pl.

Page Optimization Overview & Recommendations

Page size can be reduced by 1.3 MB (53%)

Content Size

2.4 MB

After Optimization

1.1 MB

In fact, the total size of Dfdsseaways.pl main page is 2.4 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. 45% of websites need less resources to load. Javascripts take 1.3 MB which makes up the majority of the site volume.

HTML Optimization

-75%

Potential reduce by 65.9 kB

  • Original 87.7 kB
  • After minification 76.2 kB
  • After compression 21.8 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 11.5 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 65.9 kB or 75% of the original size.

Image Optimization

-2%

Potential reduce by 14.8 kB

  • Original 805.4 kB
  • After minification 790.6 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. DFDS Seaways images are well optimized though.

JavaScript Optimization

-79%

Potential reduce by 999.3 kB

  • Original 1.3 MB
  • After minification 1.2 MB
  • After compression 265.4 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 999.3 kB or 79% of the original size.

CSS Optimization

-86%

Potential reduce by 177.0 kB

  • Original 206.2 kB
  • After minification 205.5 kB
  • After compression 29.2 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. Dfdsseaways.pl needs all CSS files to be minified and compressed as it can save up to 177.0 kB or 86% of the original size.

Requests Breakdown

Number of requests can be reduced by 25 (50%)

Requests Now

50

After Optimization

25

The browser has sent 50 CSS, Javascripts, AJAX and image requests in order to completely render the main page of DFDS Seaways. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 26 to 1 for JavaScripts and as a result speed up the page load time.

Accessibility Review

dfdsseaways.pl accessibility score

94

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

Links do not have a discernible name

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>).

Best Practices

dfdsseaways.pl best practices score

83

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

General

Impact

Issue

Low

Detected JavaScript libraries

High

Page has valid source maps

SEO Factors

dfdsseaways.pl SEO score

93

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

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

    PL

  • Language Claimed

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Dfdsseaways.pl can be misinterpreted by Google and other search engines. Our service has detected that Polish is used on the page, and it does not match the claimed English language. Our system also found out that Dfdsseaways.pl 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

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