User Manual
How to hash files and folders, read the results, and export a report — start to finish.
Run your first hashing session
Open FileToHash
Launch the app from the Start menu after installing it from the Microsoft Store.
Select a file or folder
Use Add File or Add Folder to choose what you want to hash. You can queue multiple items for a batch session.
Choose your algorithm(s)
Pick MD5, SHA-1, SHA-256, or a combination, depending on your case requirements.
Run the hash
Start the session. FileToHash reads each item and computes the selected digest values, flagging any file that changes mid-hash.
Review results
Check file names, paths, algorithms, digest values, and timestamps in the results list.
Export a report
Export the session as a PDF report for documentation, or as CSV for further analysis.
Re-hash a file after any suspected change and compare the new digest to the original — a mismatch means the content is different, even if the file name and size look the same.
If the integrity warning appears
Stop and re-run the hash on the affected item before relying on the result. The warning means the file was modified while FileToHash was reading it.
Working with audit logs
Every hashing session is recorded in a signed log entry. FileToHash uses HMAC-SHA256 to sign each entry, so if a log is edited after the fact, the signature check will fail — helping you notice unexpected changes.