Provide a simpler alternative. You can create a Gantt chart without logging in and registering, and you can export it as svg, png, or even directly reference the Gantt chart in markdown with an online svg address such as this https://gantt-online.com/api/svg/f14661caf04661f6fe/ or you can Share the Gantt chart with your friends. If you are more privacy conscious you can privately deploy gantt-online.