---
title: "Document Unknown Icon | Free Download PNG & SVG | Carbon"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/document-unknown--29501
canonical_url: "https://www.streamlinehq.com/icons/download/document-unknown--29501"
summary: "Clean line icon of a document with folded corner and question mark. Used for unknown files and missing document states."
---

# Document Unknown icon

The Document Unknown icon shows a page with a folded corner and a question mark with a dot. Drawn in the line style on a 16px grid for clear, structured UI use. Use it for unidentified files, missing document states, unknown content, and file error messages. It belongs to Carbon free set in the Carbon family.

## Preview

![Clean line icon of a document with folded corner and question mark. Used for unknown files and missing document states.](https://assets.streamlinehq.com/image/private/w_300,h_300,ar_1/f_auto/v1/icons/c3/document-unknown-kj4fqk1dj0menyilhd5r75.png/document-unknown-fp7d3c8tylp5n5esd4dl46.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Document Unknown
- **Type**: Icon
- **Set**: [Carbon](/icons/carbon-design.md) — Carbon is a free and open source icon set created by IBM with professional, structured design.
- **Family**: [Carbon](/icons/carbon.md)
- **Style**: Line, Outlined
- **Category**: All Icons › All Icons
- **Default size**: 16px
- **Pricing**: Free
- **License**: [Apache](https://github.com/carbon-design-system/carbon/blob/main/LICENSE)
- **Author**: [Carbon Design System](https://carbondesignsystem.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: document, unknown, question, info, guide, FAQ, ask, query, help, support, assist, service

## Download

- [Download Document Unknown on Streamline](https://www.streamlinehq.com/icons/download/document-unknown--29501)

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