USBImager is a free, open-source disk-imaging utility for writing supported disk images to USB drives and creating image backups. The upstream project provides portable builds for Windows, macOS, and Linux; archive size varies by release and platform. Do not confuse this application with the separately maintained Linux-only USB-Imager package distributed through PyPI. This lightweight GUI application can write ISO, IMG, and other raw disk images, including compressed images, directly to removable media. The standard interface can also create full backup images of USB drives; simplified write-only builds do not include the Read function. The tool is fully portable and available for Windows, macOS, and Linux, requiring no installation.
USBImager | Write ISO and Disk Images to USB
USBImager provides a simple graphical interface that performs the same type of low level writing as the dd command line tool, but without requiring terminal usage. It is useful for writing compatible operating-system and recovery images to removable media, then reading a USB drive back into an image file when you need a backup. It does not perform a direct device-to-device clone.
Unlike many imaging tools, it remains extremely small in size while offering advanced features such as write verification and compressed image support.
Key Features
- Open Source (MIT License): Free to use, modify, and distribute.
- Portable Application: No installation required. Run directly from a folder or USB drive.
- Compressed Image Support: Reads compressed images on the fly including .gz, .bz2, .xz, .zst, .zip, .tar, .cpio, and more.
- Wide Image Compatibility: Supports .iso, .img, .bin, .raw, .dd and similar formats.
- Write Verification: Confirms the written data matches the original image.
- System Disk Protection: Helps prevent accidental overwriting of the main system drive.
- USB Backup Creation: Create full raw or compressed backup images of USB flash drives.
- Multilingual Interface: Available in multiple languages.
- Small Download: The upstream project distributes compact archives; exact size varies by operating system and build.
Common Uses for this ISO to USB tool
This ISO to USB tool might best be used for:
- Creating bootable Linux USB drives
- Writing supported raw disk images to USB, including Linux and embedded-system images
- Flashing Raspberry Pi or embedded system images
- Backing up USB flash drives before formatting
- Creating an image backup of a recovery or installer drive, then writing that image to another compatible device
USBImager writes the selected image directly to the target device. The result is bootable only when the source image was prepared for that purpose and is compatible with the target computer.
USBImager vs Etcher vs Win32 Disk Imager
If you are comparing ISO to USB tools, here is how this one differs from two popular alternatives:
Feature Comparison
| Feature | USBImager | Etcher | Win32 Disk Imager |
|---|---|---|---|
| Installation Required | No (Portable) | Usually, depending on build | No (ZIP build available) |
| Write Verification | Yes | Yes | Yes |
| Compressed Image Support | Yes | No | No |
| USB Backup Creation | Yes | No | Yes |
| Approximate File Size | Varies by build | Varies by release | Varies by release |
USBImager stands out primarily for its extremely small footprint, compressed image handling, and portable design.
Specifications and Download
- Official Website: Project Page
- Developer: Baldasti Zoltan Tamas
- License: Open Source (MIT)
- File Size: Varies by platform and release
- Supported Operating Systems: Windows, macOS, and Linux; check the upstream repository for the available build for your system
- Category: Disk Imaging Utilities
- Editor's Rating: ★★★★★
- Download: Download USBImager
Final Thoughts on USBImager
USBImager is a compact, open-source disk-imaging utility with portable builds, compressed-image support, write verification, and a Read function for creating backups. Its main distinction from Etcher and Win32 Disk Imager is the combination of a small interface and support for several compressed image and archive formats.
For writing supported raw images, verifying the result, or saving a removable drive to an image file, USBImager offers a straightforward option. Check the selected build's capabilities and confirm the target device before writing, because the operation replaces its existing contents.
