Tools & Wizards About Us

Report Summary

  • 42

    Performance

    Renders faster than
    61% 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

tcselfservice.thomascook.com

Thomas Cook Holidays | Package Holidays, Hotels & City Breaks

Page Load Speed

5.6 sec in total

First Response

188 ms

Resources Loaded

4.3 sec

Page Rendered

1.1 sec

About Website

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Key Findings

We analyzed Tcselfservice.thomascook.com page load time and found that the first response time was 188 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

tcselfservice.thomascook.com performance score

42

Measured Metrics

name

value

score

weighting

FCP (First Contentful Paint)

Value3.0 s

50/100

10%

LCP (Largest Contentful Paint)

Value6.1 s

12/100

25%

SI (Speed Index)

Value4.2 s

77/100

10%

TBT (Total Blocking Time)

Value960 ms

28/100

30%

CLS (Cumulative Layout Shift)

Value0.088

92/100

15%

TTI (Time to Interactive)

Value8.5 s

38/100

10%

Network Requests Diagram

tcselfservice.thomascook.com

188 ms

www.thomascook.com

17 ms

www.thomascook.com

401 ms

gtm.js

102 ms

wt.js

65 ms

Our browser made a total of 82 requests to load all elements on the main page. We found that 1% of them (1 request) were addressed to the original Tcselfservice.thomascook.com, 65% (53 requests) were made to Thomascook.com and 5% (4 requests) were made to Ots.webtrends-optimize.com. The less responsive or slowest element that took the longest time to load (2.7 sec) relates to the external source Thomascook.com.

Page Optimization Overview & Recommendations

Page size can be reduced by 341.7 kB (69%)

Content Size

492.9 kB

After Optimization

151.2 kB

  • HTML
  • Images
  • JavaScript

In fact, the total size of Tcselfservice.thomascook.com main page is 492.9 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. 70% of websites need less resources to load. HTML takes 288.3 kB which makes up the majority of the site volume.

HTML Optimization

-89%

Potential reduce by 256.0 kB

  • Original 288.3 kB
  • After minification 219.9 kB
  • After compression 32.4 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 68.4 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 256.0 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. Tcselfservice Thomas Cook images are well optimized though.

JavaScript Optimization

-51%

Potential reduce by 85.4 kB

  • Original 169.1 kB
  • After minification 168.6 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 85.4 kB or 51% of the original size.

Requests Breakdown

Number of requests can be reduced by 18 (23%)

Requests Now

79

After Optimization

61

  • AJAX
  • Images
  • JavaScript
  • CSS

The browser has sent 79 CSS, Javascripts, AJAX and image requests in order to completely render the main page of Tcselfservice 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 19 to 1 for JavaScripts and as a result speed up the page load time.

Network Requests Diagram

Accessibility Review

tcselfservice.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

tcselfservice.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

tcselfservice.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 Tcselfservice.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 Tcselfservice.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 Tcselfservice Thomas Cook. This is the best way to make the web page social media friendly. Here is how it looks like on Facebook: