Choose your preferred theme for the timeline interface.
Load your own events from a JSON or CSV file. Data is stored locally in your browser and never sent to the server.
Your custom data is 100% private and stays on your device:
Tip: Save your JSON/CSV files externally to backup your custom data.
Supports JSON and CSV files (max 10MB)
Customize how duration events (epochs, eras, periods) are displayed on the timeline.
Gantt bars provide clear, non-overlapping visualization of historical periods with rounded bars and smart label placement.
Configure which categories and periods appear in your timeline. Hidden items won't show in the dropdowns or timeline.