Stable Numbers
SFV / CRC32 Checker
Calculate CRC32 checksums and create or verify SFV files. Drag and drop files, generate a clean manifest, and check integrity offline.
Calculate CRC32
CRC32
Files
Drop files here or click to choose
All processing happens in your browser. Nothing is uploaded.
| File | Size | CRC32 |
|---|---|---|
Verify from an SFV
Standard format: one file per line, filename then CRC32 as eight hex digits. Lines starting with ; are comments.
Files to verify
Drop files here or click to choose
| File | Expected | Actual | Status |
|---|---|---|---|
What is SFV?
SFV files list filenames and their CRC32 checksums. They were widely used in the late 90s for checking downloads and disc images. This page creates and verifies those manifests in your browser. CRC32 is fast and good for accidental corruption checks, not for security.