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Developer priorities by diagnostic Thomas Cook Airlines

Developer priorities allow you to review the important aspects of your assessment from a technical view point. Typically, these priorities relate to changes that cannot be addressed by content editors easily.

Assessment completed on 04 Jul 2020 at 16:50 looking at http://www.thomascookairlines.com/.


  • 125 pages

  • None found

  • None found

  • None found

  • None found

Five slowest URLs by time to first byte



Top five accessibility issues

Occurrences What We Checked
685 H30 : Providing link text that describes the purpose of a link for anchor elements
625 G141 : Organizing a page using headings
132 F17 : Failure of Success Criterion 1.3.1 and 4.1.1 due to insufficient information in DOM to determine one-to-one relationships (e.g., between labels with same id) in HTML
129 H93 : Ensuring that id attributes are unique on a Web page
129 F77 : Failure of Success Criterion 4.1.1 due to duplicate values of type ID

Top five code quality issues

Occurrences What We Checked
172 Invalid attribute value
104 Invalid attribute name
73 A "301 Moved Permanently" response was received
24 A redundant close tag was found
2 Fragment identifier not found

Top five functions / links issues

Occurrences What We Checked
13 File not found
2 Redirect points back to the original page
0 Access is denied
0 PHP error
0 Image file is corrupt