FolderProof — Baseline Folder Integrity Verifier

“The copy finished” does not always mean “everything is identical.”

FolderProof saves a known-good folder baseline and lets you verify that folder again later.

It detects:

Missing / Extra / Changed files

Use it for:

external-drive copies, restored backups, delivery folders, archives, and any workflow where you need to confirm that a folder still matches a known-good state.

Optional SHA-256 mode can verify file contents, not just names and metadata.

FolderProof is a local browser utility for saving a known-good folder baseline and verifying it again later.

Use it after copying files, restoring a backup, preparing a delivery folder, or revisiting archived work.

It detects:

- Missing files

- Extra files

- Changed files

Two verification modes:

- Quick: path, file size, and modified time

- SHA-256: also records and verifies file-content hashes

Reports:

- CSV

- TXT

Useful for:

- Backup verification

- Folder transfers

- External drives

- Digital product delivery

- Archived projects

- Shared project folders

Privacy & safety:

- Runs entirely locally

- No uploads

- No external API

- Does not modify, rename, move, or delete source files

- No installation required

The interface supports English and Japanese.

Note:

SHA-256 mode may use significant time and memory when processing many large files. FolderProof is a verification aid and does not replace a backup strategy.

Need more than one preflight check?

Get the QuietByte Preflight Utility Pack and receive all 3 tools:

- FileName Preflight

- FolderProof

- LinkProof

Bundle price: $5.99

https://quietbyte-lab.itch.io/preflight-utility-pack