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SHAverify
Private • Client-side • Free

Trust Every Document. Verify Every Draft.

Generate a SHA-256 fingerprint and QR code instantly. Prove your contract or settlement draft hasn’t been altered — all in your browser.

Live Demo

Drop your file. Your file never leaves your device.

SHA-256 Hasher (Private, Client-side)

Your file never leaves your browser.

How it works

1) Upload
Pick your document. We compute a SHA-256 fingerprint.
2) Share
Copy the hash. Attach it with your draft.
3) Verify
If the hash matches, the file is unchanged. Otherwise, something changed.

Compare two versions

Spot invisible edits in text documents with a side-by-side diff (hash + size for binaries).

Compare Two Files (Client-side)

Latest Articles

How to Integrate SHA-256 Verification into Daily Workflow

September 25, 2025

Knowing the theory is one thing; applying it is another. Here’s how anyone can build SHA-256 integrity checks into their routine: Step 1: Generate hashes when saving important documents Most operating systems have built-in commands (e.g., shasum -a 256 file.pdf on macOS/Linux or CertUtil -hashfile file.pdf SHA256 on Windows). Save the hash alongside the file […]

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The Hidden Risks of Ignoring Document Integrity

September 25, 2025

Imagine discovering years later that a contract, medical record, or financial statement was slightly altered. Even small manipulations can have huge consequences. Without integrity checks, you may never know. Common risks without verification How SHA-256 protects you By regularly running SHA-256 checks on important files, you create a baseline. Any mismatch is an immediate red […]

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What is SHA-256 and Why Should You Care About Document Integrity?

September 25, 2025

In today’s digital world, almost everything we create, share, and store is electronic. From contracts and medical records to creative projects, the authenticity of these files is critical. That’s where SHA-256 comes in. SHA-256 is a cryptographic hash function—think of it as a digital fingerprint for a file. No matter the size of the document, […]

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