You can choose between the following formats:

YAML: Best for exporting data.
Please note that importing YAML files is currently supported only in experimentally. Do not rely on it for backing up critical data.
CSV: Best for importing into spreadsheet or data analysis software
XML: Best for importing or repurposing the data

Description	Download link
YAML file containing all your actions, contexts, projects, tags and notes	<%= link_to "YAML file", data_yaml_export_path %>
CSV file containing all of your actions, with named contexts and projects	<%= link_to "CSV file (actions, contexts and projects)", data_csv_actions_path %>
CSV file containing all your notes	<%= link_to "CSV file (notes only)", data_csv_notes_path %>
XML file containing all your actions, contexts, projects, tags and notes	<%= link_to "XML file (actions only)", data_xml_export_path %>