Flashing operating systems (like Raspbian or Ubuntu) onto SD cards for Raspberry Pi or Android-on-Arm projects. System Backups:

Built-in support for MD5, SHA1, and SHA256 hashes to verify image integrity before and after writing.

While "portable" often implies a single executable that requires no installation, there are two main ways to get it in this format: Win32 Disk Imager download | SourceForge.net

If you want, I can:

Get the installer or the standalone executable from the Win32 Disk Imager - Download [Official Site].

The utility will read every sector of the removable media and compile it into the single image file. A "Read Successful" popup will alert you when the process is complete. Critical Safety Warning: Check Your Drive Letters!