PrivateTools
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Hash Generator

Generate MD5, SHA-1, and SHA-256 hashes from text — MD5 in JS, SHA via Web Crypto API.

100% client-side — your data never leaves this tab

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What is Hash Generator?

Hash Generator computes checksums like MD5, SHA-1, and SHA-256 for integrity checks and fingerprinting. Developers can verify file/text consistency and compare known hash outputs during debugging.

All hash calculations execute in your browser; source text is never uploaded.

How to use Hash Generator

  1. 1Enter the text you want to hash.
  2. 2Select algorithm (MD5, SHA-1, or SHA-256).
  3. 3Generate hash and copy the resulting digest.
  4. 4Compare against expected digest for verification.

Examples

SHA-256 sample

Input: "hello" -> 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824

MD5 sample

Input: "hello" -> 5d41402abc4b2a76b9719d911017c592

Tips & common mistakes

  • Use SHA-256 for modern integrity checks; MD5/SHA-1 are legacy and collision-prone.
  • Even one extra space or newline changes the digest completely.
  • For password storage, use dedicated password hashing (bcrypt/argon2), not plain SHA.

Who uses this tool?

  • Comparing text digests in API signature debugging.
  • Verifying content integrity after copy/paste or migration.
  • Generating stable identifiers for caching or dedupe workflows.

Frequently asked questions

Which hash algorithm should I use today?
For general integrity checks, SHA-256 is a strong default. Avoid MD5/SHA-1 for security-sensitive use cases.
Can two different inputs share the same hash?
Collisions are possible in theory for all hashes, but significantly harder for stronger algorithms like SHA-256.
Why does hash output change after copy-paste?
Hidden whitespace, line endings, or encoding differences can alter input bytes and produce a different digest.
Is hashing reversible?
No. Cryptographic hashes are one-way functions, though weak password choices can still be guessed via brute-force attacks.
Can I hash files directly with this text tool?
This workflow focuses on text input. For file hashing, use dedicated file-hash tools or CLI utilities.