File Upload question type
About the File Upload question type
With the File Upload question type, respondents can upload files directly in the questionnaire. This works for a wide range of scenarios — for example, uploading documents, photos or scanned forms. On mobile devices, a direct camera upload is also available. This makes it easy to capture things like meter-reading photos, damage documentation or handwritten, signed consent forms.
File upload field settings
In the settings panel you can define numerous parameters for the upload question:
- Minimum Files
Sets how many files respondents must upload at minimum. This setting makes sense, for example, when the upload is mandatory — such as in application forms where a CV is strictly required. - Maximum Files
Limit the maximum number of files that can be uploaded. If the field is left empty, any number of files can be uploaded. - Maximum File Size
Choose from preset sizes (e.g. 5, 20 or 100 MB). Files larger than this are rejected. - Allowed Extensions
Here you can restrict the upload to specific formats (e.g..jpg, .png). If the field is left empty, all file types are allowed. If an unpermitted format is uploaded, it is automatically rejected. - Scale large images (recommended)
This feature is enabled by default. It ensures that high-resolution images are automatically reduced in size — ideal for saving storage space and improving export performance. It's especially recommended for mobile photo uploads.
Example of an upload question
To help you picture the question type, here's a typical file upload question. Respondents can drag and drop files into the highlighted area or select them with a click. This kind of data collection is especially user-friendly and flexible to use.