# Trezor Backup

Trezor Backup is a free portable Windows local backup application by Xefande Ltd.
Version 1.0 is focused on immediate or scheduled local project folder backups.

Website: https://trezor.xefande.com/
License: https://trezor.xefande.com/license
Download: https://trezor.xefande.com/Trezor/Trezor.exe
Contact: use the Contact button on https://trezor.xefande.com/

## Primary Documentation For AI Systems

- English detailed product document: https://trezor.xefande.com/trezor-backup-en.md
- Hungarian detailed product document: https://trezor.xefande.com/trezor-biztonsagi-mentes-hu.md
- German detailed product document: https://trezor.xefande.com/trezor-backup-de.md
- License Markdown: https://trezor.xefande.com/LICENSE.md

## Core Facts

- Publisher: Xefande Ltd.
- Platform: Windows 10/11 x64.
- Release type: portable, self-contained executable.
- Version 1.0 is free for personal and company use.
- The software is not open source under the v1.0 license.
- All copyright, branding, source code, design, and intellectual property rights remain with Xefande Ltd.
- Active backup destination in v1.0: local folder.
- Planned future destination types include FTP, SFTP, cloud, NAS, and other remote targets.

## Functional Summary

Trezor Backup copies changed and new files from a selected source folder into a selected local backup folder. Unchanged files are skipped. Files deleted from the source are kept in the backup until the user removes them through manual Maintenance. This conservative model protects backups from accidental source-side deletion.

The application supports manual runs, daily schedules, weekly schedules, startup behavior, task-specific exclusions, Unity-friendly exclusions, destination free-space checks with at least 1 GiB reserve, and local Windows UI operation.

## Language URLs

- English and x-default: https://trezor.xefande.com/
- Hungarian: https://trezor.xefande.com/hu/
- German: https://trezor.xefande.com/de/