Overview
What is Fast File Validator (FFV)?
Fast File Validator (FFV) : A program for verifying files against a checksum file and for creating such checksum files
In depth
A closer look at Fast File Validator (FFV)
Fast File Validator (FFV) is a handy command line tool designed to create checksum files. FFV supports both SFV files (which use the CRC32 algorithm) and MD5 files. Actually, it can handle both types of checksum in the same file, although you don’t normally see this, and I don’t recommend creating such files. FFV is fast, because it’s written directly to the Win32 API to avoid unnecessary overhead and it uses a multi-threaded design, so it can calculate the CRC while reading the file
Verdict
Should you download Fast File Validator (FFV)?
Fast File Validator (FFV) runs on
Windows 10/11
and is available under the
GNU Public License
license
— the installer is 135 KB.
We’ve catalogued it under
System.
✓
Verified clean. Every Fast File Validator (FFV) build on SoftLookup is scanned for viruses, spyware, adware, trojans and backdoors. We re-test on every update.
Sponsored
At a glance
Fast File Validator (FFV) specifications
- Publisher
-
Christopher J. Madsen
- Last updated
- Apr 28, 2026
- License
- GNU Public License
- Operating system
- Windows 10/11
- File size
- 135 KB
- Price
- Free
- Page views
- 528
Help fellow users decide. Share your experience with Fast File Validator (FFV).