IgorWare Hasher is a free, portable hash generator for Windows that allows users to create and verify file checksums using common hashing algorithms such as SHA-1, MD5, and CRC32. This lightweight checksum calculator is designed for quick file integrity checks and supports automatic verification using checksum files, making it useful for validating downloads and detecting file corruption.
Hasher | Checksum Calculator | Hash Generator
This file integrity verification tool supports checksum creation and validation using SHA, MD5, SFV, and CRC32 formats. It is designed for simplicity, focusing on single file verification rather than batch processing.

What Is IgorWare Hasher?
This portable checksum utility works by automatically detecting and loading checksum verification files when a target file is selected. If a matching verification file such as SFV or MD5 exists in the same directory, the program will compare the calculated hash against the reference value and immediately report whether the file is valid or corrupted.
Because it requires no installation and leaves no system footprint, this hash checker is well suited for USB flash drives and on the go troubleshooting. It is available in both 32 bit and 64 bit versions, allowing it to run on a wide range of Windows systems.
Key Features
- Checksum Generation: Create SHA-1, MD5, and CRC32 hashes for individual files.
- Automatic Hash Verification: Automatically loads and validates checksum files such as SFV and MD5 when present.
- File Integrity Checking: Verify that downloaded or transferred files have not been altered or corrupted.
- Portable Hash Tool: No installation required. Can be run directly from a USB drive or removable media.
- Multiple Architectures: Available in both 32 bit and 64 bit Windows builds.
- Simple User Interface: Focused, minimal interface ideal for quick checksum checks without unnecessary options.
Common Uses
Checksum generators like this are commonly used to verify downloaded software, confirm archive integrity, and ensure files copied via USB drives remain unchanged. Automatic verification using SFV or MD5 files makes it especially convenient when working with software distributions or mirrored downloads.
Bottom Line
I feel this portable checksum calculator is a straightforward and dependable option for users who need quick, single file hash verification without extra complexity. Its automatic checksum detection, small size, and USB friendly design make it a practical choice for validating downloads and checking file integrity on any Windows PC.
Hasher Specifications and Download
Extracted Size: 92 KB
Website URL: Project Page
Developer: IgorWare
License: Freeware
Download: You can get this portable hash file generator here:
Download Hasher
If you find this checksum verification tool useful, you may also want to look at HashMyFiles, which supports batch hashing and additional algorithms.