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Hash Checksum

Hash Checksum

Hash Checksum supports SHA-256, SHA-512, and SHA-1 for text and files, with fast comparison against expected values for download checks, backup verification, and file integrity review.

Text Input
Hash Checksum

Quick Start

1
Choose mode: Text or File
2
Enter text or drop a file to verify
3
Select hash algorithm (default: SHA-256)
4
Click "Compute" to generate the checksum
5
Optional: Paste expected value to compare

Common Scenarios

Download verification

Compare with official checksum to confirm file integrity

Backup validation

Compare hashes before and after to ensure data integrity

API signing

Generate request digests for API authentication

Deduplication

Quickly detect identical files via hash comparison

Usage Advice

Use SHA-256 for daily verification—good balance of security and performance
Use SHA-512 for high-security scenarios—stronger collision resistance
SHA-1 is for legacy compatibility only—not recommended for new use cases
Watch case sensitivity: Official checksums are often lowercase; switch output format to match

Limitations & Compatibility

Requires WebCrypto API—modern browsers only
Large files use stream processing; memory-safe but slower for GB-scale files
SHA-1 has known collision vulnerabilities—use only for legacy compatibility

Privacy & Security

All processing happens locally in your browser. You can replace, clear, and re-run the current content at any time.

FAQ

5

Continue with these related tools for the next step.