# Illegal Filename Samples Sample filenames with illegal characters, reserved names, and cross-platform issues for testing filename sanitization > Canonical page: https://elysiatools.com/en/samples/filename-illegal-characters - **Category:** File Management - **Keywords:** filenames, illegal-characters, sanitization, windows, linux, cross-platform, reserved-names ## Overview Sample filenames with illegal characters, reserved names, and cross-platform issues for testing filename sanitization ## Examples - **Windows Illegal Characters**: Filenames containing characters illegal on Windows: < > : " / \ | ? * and reserved device names - **Linux Illegal Characters**: Filenames with issues on Linux systems: forward slashes, null characters, and command-line argument problems - **Cross-Platform Tricky Names**: Filenames with tricky cross-platform issues: reserved names, trailing dots, leading/trailing spaces, and long filenames - **Unicode Filenames**: Filenames in various languages and scripts including right-to-left text, special characters, and emoji - **Real World Messy Filenames**: Examples of messy filenames from real-world scenarios: downloads, screenshots, backups, and temporary files ## When to use - Use this sample set when you want reference inputs for Illegal Filename Samples. - Use it to preview output formats and compare related sample variants. ## How it works - Open a sample entry to inspect the prepared example payload or asset. - Compare it with related tools to understand how the workflow connects. ## Use cases - Windows Illegal Characters - Linux Illegal Characters - Cross-Platform Tricky Names - Unicode Filenames - Real World Messy Filenames ## Frequently asked questions ### What is included in Illegal Filename Samples? 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