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File Hash Integrity Checker
Generate, verify, and compare file hashes for integrity checking using multiple cryptographic algorithms.
How It Works
Privacy First
This file hash integrity checker processes your data entirely in your browser. No data is uploaded to any server, ensuring complete privacy and security.
Lightning Fast
Instant processing with real-time validation and error detection. No waiting, no delays - just immediate results.
Versatile Use Cases
- Verifying downloaded files haven't been corrupted or tampered with
- Creating checksums for software distribution and integrity verification
- Comparing file versions to detect changes and ensure consistency
Mobile Friendly
Responsive design that works perfectly on all devices and screen sizes. Touch-friendly interface for mobile users.
Frequently Asked Questions
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.