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File Checksum (SHA-256) — Free Online Hash Generator

Generate a SHA-256 hash for any file to verify its integrity. Compare the checksum against a known value to confirm the file hasn't been altered or corrupted during download or transfer.

🔒 100% Private — files stay on your device ⚡ Instant processing 🆓 Free forever

Drop file here or click to browse

Files stay on your device · Up to 200 MB

How to Use File Checksum

1
Upload any file (PDF, image, document, archive, etc.).
2
Click Generate Checksum.
3
Copy the SHA-256 hash and compare it against the expected value.

Why Use Our File Checksum Tool?

Software downloads, legal documents, and data archives should always be checksum-verified. Our tool runs the Web Crypto API locally — your file content is never sent anywhere.

🔒100% PrivateFiles never leave your device
⚡InstantProcessing happens in seconds
🆓Always FreeNo subscription, no credit card
🌐Any DeviceWorks on desktop, tablet & mobile

Frequently Asked Questions

To verify that a file received is identical to the original. If even one byte changes, the SHA-256 hash changes completely.

SHA-256 is a cryptographic hash function considered secure for file integrity verification. It is part of the SHA-2 family.

Any file type — PDF, ZIP, EXE, image, video, document, etc.

No — SHA-256 is a one-way function. It cannot be reversed.

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