Tools & Wizards About Us

Report Summary

  • 18

    Performance

    Renders faster than
    34% of other websites

  • 91

    Accessibility

    Visual factors better than
    that of 76% of websites

  • 92

    Best Practices

    More advanced features
    available than in
    80% of websites

  • 86

    SEO

    Google-friendlier than
    60% of websites

scdn.thomascook.com

Thomas Cook Holidays | Package Holidays, Hotels & City Breaks

Page Load Speed

5.6 sec in total

First Response

196 ms

Resources Loaded

4.2 sec

Page Rendered

1.2 sec

About Website

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Key Findings

We analyzed Scdn.thomascook.com page load time and found that the first response time was 196 ms and then it took 5.4 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

scdn.thomascook.com performance score

18

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value5.5 s

6/100

10%

LCP (Largest Contentful Paint)

Value6.4 s

10/100

25%

SI (Speed Index)

Value11.2 s

5/100

10%

TBT (Total Blocking Time)

Value13,180 ms

0/100

30%

CLS (Cumulative Layout Shift)

Value0.088

92/100

15%

TTI (Time to Interactive)

Value21.4 s

1/100

10%

Network Requests Diagram

scdn.thomascook.com

196 ms

www.thomascook.com

33 ms

www.thomascook.com

419 ms

gtm.js

85 ms

wt.js

739 ms

Our browser made a total of 77 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Scdn.thomascook.com, 68% (52 requests) were made to Thomascook.com and 4% (3 requests) were made to C.webtrends-optimize.com. The less responsive or slowest element that took the longest time to load (2.1 sec) relates to the external source Thomascook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 307.8 kB (67%)

Content Size

458.6 kB

After Optimization

150.8 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Scdn.thomascook.com main page is 458.6 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. 65% of websites need less resources to load. HTML takes 285.9 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 254.0 kB

  • Original 285.9 kB
  • After minification 217.8 kB
  • After compression 32.0 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 68.1 kB, which is 24% 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 254.0 kB or 89% of the original size.

Image Optimization

-1%

Potential reduce by 294 B

  • Original 35.5 kB
  • After minification 35.2 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. Scdn Thomas Cook images are well optimized though.

JavaScript Optimization

-39%

Potential reduce by 53.5 kB

  • Original 137.2 kB
  • After minification 136.7 kB
  • After compression 83.7 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 53.5 kB or 39% of the original size.

Requests Breakdown

Number of requests can be reduced by 20 (27%)

Requests Now

73

After Optimization

53

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 73 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Scdn Thomas Cook. We recommend that multiple CSS and JavaScript files should be merged into one by each type, as it can help reduce assets requests from 14 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

scdn.thomascook.com accessibility score

91

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

Image elements do not have [alt] attributes

Best Practices

scdn.thomascook.com best practices score

92

Areas of Improvement

Trust and Safety

Impact

Issue

High

Does not use HTTPS

Low

Ensure CSP is effective against XSS attacks

General

Impact

Issue

Low

Detected JavaScript libraries

High

Missing source maps for large first-party JavaScript

SEO Factors

scdn.thomascook.com SEO score

86

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

    EN

  • Encoding

    UTF-8

Language claimed in HTML meta tag should match the language actually used on the web page. Otherwise Scdn.thomascook.com can be misinterpreted by Google and other search engines. Our service has detected that English is used on the page, and it matches the claimed language. Our system also found out that Scdn.thomascook.com 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 data is detected on the main page of Scdn Thomas Cook. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: