The Chronolator Browser Tools do not collect or transmit any personal data.
The tools use cookies to maintain the integrity of your data. For example, they ensure you do not open a new chronology before saving any work on a previous one.
You will be warned about cookie use the first time you use a tool, and periodically thereafter. This periodic notification is itself controlled using cookies.
Some third parties (e.g. google.com) might install cookies on the Tools web site. We have no control over these.
If you are concerned about them, a search for something like 'controlling cookies' should give you links to some useful sites. At the time of writing, one such site was www.aboutcookies.org.uk