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File restrictions define which file types users can upload when submitting a form in Box Forms. This feature is essential for enterprises that need to limit file uploads to approved formats or prevent unsupported files from entering their content management system when collecting files using Box Forms.

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Configuring File Restrictions

Admins and end users who have been enabled to use Box Forms can set allowed file types during the form design process. By specifying permitted extensions, you can tailor each form to accept only relevant documents, images, or other files as required by your organization.

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Supported File Types

CategoryFormat(s)
Images.jpg, .png, .jpeg, .gif, .bmp, .webp
Videos.mov, .mp4, .avi
PDF.pdf
Archive.zip, .iso
Documents.pdf, .doc, .docx, .gdoc
Spreadsheets.XLSX, .XLS, .GSHEET, .CSV .xlsx, .xls, .gsheet, .csv
Presentations.ppt, .pptx, .gslides

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Setting Up File Restrictions

  1. Within Box Forms, open your form in the Box Forms editor.
  2. Drag and drop a file upload field or select an existing one.
  3. In the field’s settings, restrict the following:
    • File Type:
      • Images
      • Videos
      • PDF
      • Documents
      • Slideshow
      • Spreadsheets
      • Archive
    • Number of uploads
      • Set a minimum or maximum limit for number of uploads.
      • Note: If the file upload field is set to mandatory, at least one file upload will be required, even if the upload minimum is set to 0.
  4. Publish the form
    • Validate the restrictions were implemented in the form.