SHA Hash Generator
Generate a SHA-256, SHA-384 or SHA-512 fingerprint of entered UTF-8 text.
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Hashes & identifiers
Compare text fingerprints and choose identifiers with clear limits.
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UUID v4 Generator
Create one to 100 random UUID v4 identifiers for development records and synthetic fixtures.
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Hashes & identifiers
Create and compare SHA-256 checksums for text fixtures
Verify exact text integrity with SHA-256.
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Hashes & identifiers
Why identical-looking text produces different hashes
Diagnose checksum mismatches.
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Hashes & identifiers
Hash vs HMAC vs signature: which question are you answering?
Distinguish integrity from authentication.
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Hashes & identifiers
UUID v4 in practice: randomness, collisions and database checks
Generate and use random UUID identifiers.
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Hashes & identifiers
UUID v4 vs timestamp-based IDs: a requirement checklist
Choose an identifier strategy.
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