InTimeline is a free Chrome add-on developed by Bokemarks that allows users to display a timeline chart of the work history of any LinkedIn profile. With this add-on, users can quickly get an overview of the person's work experience and detect any job history gaps.

One of the key features of InTimeline is its ability to react to changes in the browser history while navigating on LinkedIn. This means that as users browse through a LinkedIn profile, the add-on will update the timeline chart accordingly, providing a real-time representation of the person's work history.

It is worth noting that InTimeline is a proof-of-concept and may not work perfectly. If the timeline chart does not show up, users can simply reload the page and scroll to the "Work Experience" section to try again.

Overall, InTimeline is a useful tool for anyone who wants a quick work history overview of LinkedIn profiles. However, it is important to keep in mind that this add-on is still in development and may have some limitations.