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Advanced questions handle structured or multi-dimensional input that doesn’t fit neatly into text or choice formats.

File upload

Respondents attach one or more files. Best for document collection, image submissions, or any workflow that requires file intake. File upload question in the canvas Accepted type categories:
If you add entries to allowed_extensions, they are validated against the selected allowed_types unless any is selected or no types are selected. Extension tags are automatically normalised to lowercase without a leading dot.

Matrix

Respondents answer several sub-questions (rows) using the same set of options (columns) in a grid layout. Best for comparing multiple items on the same criteria, or collecting structured attribute ratings. Matrix question in the canvas Rows and columns are edited as plain text lists in the right panel. Add, remove, or reorder them freely. Matrix modes:
The answer to a Matrix question is stored as an object mapping each row to its selected column value(s) — e.g. {"row_1": "column_2", "row_2": "column_1"} in single mode.

Next steps

Common fields

Title, description, image, and the required toggle.

Workflow canvas

Connect your questions into a flow.