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File Hash Integrity Checker – Verify File Checksums

Verify file integrity with MD5, SHA-1, SHA-256, and SHA-512 checksums—compare hashes to detect tampering or corruption.

🟢 Runs locally · no uploads

File Hash Integrity Checker

Verify file integrity with cryptographic hashes

edit_note File & Hash Input
document.pdf sha256:abc123def456
task_alt Integrity Report
verified_user
Verification results will appear here
Keyboard Shortcuts: Ctrl+V to paste • Ctrl+Enter to verify

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Unified hash generator with text/file hashing, multi-algorithm support, integrity verification, and batch processing — all client-side.
› About this tool · FAQ

Generate, verify, and compare file hashes for integrity checking using multiple cryptographic algorithms.

Which hash algorithm should I use?

SHA-256 is recommended for security-critical applications. SHA-512 offers higher security. Avoid MD5 and SHA-1 for security purposes. Use BLAKE2b for performance-critical applications.

What checksum file formats are supported?

Supports standard formats including GNU-style (hash filename), BSD-style (ALGORITHM (filename) = hash), SFV, and MD5SUM/SHA256SUM formats.

How accurate is the hash verification?

Hash verification is cryptographically secure. A matching hash provides extremely high confidence (99.999...%) that data is identical, while mismatches definitively indicate changes.

Can I verify multiple files at once?

Yes, use batch mode with checksum files. The tool parses standard checksum file formats and can verify multiple entries simultaneously.

What happens if I use a deprecated algorithm?

The tool warns about deprecated algorithms (MD5, SHA-1) but still processes them for compatibility. Use modern algorithms like SHA-256 for new applications.