PDF Hash
Drop a PDF file here or click to upload
No size limit — large files welcome
🔒 Your files are processed securely and never uploaded to any server.
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What is PDF Hash?
PDF Hash computes a cryptographic hash of the entire PDF file using the Web Crypto API. You can choose the hash algorithm (default is SHA-256), and the tool returns the hex-encoded hash value along with the file name and algorithm used.
How to Use PDF Hash
- Upload your PDF file.
- Optionally select the hash algorithm (SHA-1, SHA-256, SHA-384, SHA-512 — default is SHA-256).
- Click Calculate Hash. The tool computes the digest over the raw file bytes.
- Download the result as
hash.txtcontaining the algorithm, filename, and hex hash.
Why Use PDF Hash?
File hashes are used for integrity verification — confirming that a file hasn't been modified or corrupted during transfer. SHA-256 is the industry standard for document verification, and you can compare the hash against a known-good value to confirm authenticity.
Privacy & Security
Your files never leave your browser. The hash calculation happens entirely on your device using the browser's built-in crypto API. Nothing is uploaded to Racira's servers, no copies are stored in the cloud, and no file data is transmitted at any point.
Frequently Asked Questions
Which hash algorithm should I use?
SHA-256 is the best default for most use cases — it's fast, widely supported, and collision-resistant. Use SHA-512 for maximum security requirements, or SHA-1 only when matching legacy systems that require it.