SlackLine is a free Chrome add-on developed by Old Pike Software that enhances the functionality of the popular team communication tool, Slack. With SlackLine, users can enjoy two key features that improve their Slack experience.

Firstly, SlackLine offers the option to hide the message input field behind a button. This prevents the common mistake of accidentally sending a message when intending to reply to another message. By hiding the input field, users can avoid reflexively sending incomplete or unintended messages, ensuring more accurate and intentional communication within the platform.

Secondly, SlackLine allows users to conveniently create formatted headlines for selected posts, particularly those intended as thread starters. By simply starting a message text with the headline enclosed in {curly brackets} or in ALL CAPS, users can easily identify and locate specific threads they are looking for. This feature streamlines the process of navigating through conversations and finding relevant discussions.