Select a PDF file. The tool checks the file on your device. It does not upload your file.
This tool calculates your PDF's SHA-256 hash on your device. It compares the full hash with the current and archived builds. A match identifies a published version. Your file stays on your device. The browser does not check signatures. Use the GitHub CLI command to check the signature and build origin.
The source hash identifies the Markdown file used to build the PDF. It includes text, formatting, and links. It is not the PDF file hash.
Build and signatures · Download signature bundle
Install the GitHub CLI. Run this command in the folder that contains your PDF. This page does not verify signatures.