---
title: "Unknown Document Icon | Free Download PNG & SVG | Outlined Line - Streamline Material"
product: "Streamline Icons, Illustrations and Elements"
url: /icons/download/unknown-document--32262
canonical_url: "https://www.streamlinehq.com/icons/download/unknown-document--32262"
summary: "Clean line icon of a document with a folded corner and question mark. Used for unknown files and help prompts."
---

# Unknown Document icon

The Unknown Document icon shows a page with a folded corner and a question mark. Drawn in the line style on a 24px grid with consistent spacing for clear UI use. Use it for unidentified files, missing document states, help prompts, and file management interfaces. It belongs to Outlined Line - Streamline Material set in the Streamline Material family.

## Preview

![Clean line icon of a document with a folded corner and question mark. Used for unknown files and help prompts.](https://assets.streamlinehq.com/image/private/w_240,h_240,ar_1/f_auto/v1/icons/text-formatting/unknown-document-94fee.png?_a=DATAiZkSZAA0)

## Details

- **Name**: Unknown Document
- **Type**: Icon
- **Set**: [Outlined Line - Streamline Material](/icons/material-pro-outlined-line.md) — Improved Material Line Icons redrawn using Material Design Guidelines with better coverage and consistency. Fixed where originals fell short.
- **Family**: [Streamline Material](/icons/material-pro.md)
- **Style**: Line, Outlined, Geometric
- **Category**: Text Formatting › Text Formatting
- **Default size**: 24px
- **Pricing**: Pro
- **License**: [Commercial](https://home.streamlinehq.com/license-premium)
- **Author**: [Streamline](https://home.streamlinehq.com/)
- **Formats**: PNG, WEBP, PDF, SVG, JSX
- **Tags**: unknown, document

## Download

- [Download Unknown Document on Streamline](https://www.streamlinehq.com/icons/download/unknown-document--32262)

## Also available in other styles

- [Unknown Document — Sharp Line - Streamline Material](/icons/download/unknown-document--32893.md) (Pro)
- [Unknown Document — Rounded Line - Streamline Material](/icons/download/unknown-document--32935.md) (Pro)

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