Create a local hash record for your PDF
Drag & drop your PDF here
or
Max 100MB
The field notes
A little context for your next step.
Create a local PDF record containing document details, a SHA-256 hash, and timestamps generated in your browser. Comparing a later hash with a separately retained record can show whether the file bytes match; the record does not independently prove when an event occurred, who handled the file, or what its historical state was.
Choose a PDF to read its file details and compute a SHA-256 hash in your browser.
Review the document details and browser-generated timestamps before creating the PDF record.
Save the record separately. Later, compute a hash for the file and compare the values to check whether its bytes match the retained record.
It includes document details, a SHA-256 hash of the PDF bytes, and timestamps created by the browser while analyzing and generating the record.
If you retain the record separately, you can hash a later file and compare the values. A matching hash indicates the bytes match; a different hash indicates they do not.
No. The timestamps are created locally by the browser and are not independently verified or signed.
No. The record does not identify or authenticate a person, establish chain of custody, or provide non-repudiation.
No. It records a locally computed hash and details at the time you use the tool, but does not independently prove the file’s earlier history or satisfy a legal or compliance standard.