Developers
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
- 1Enter the text you want to hash.
- 2Select algorithm (MD5, SHA-1, or SHA-256).
- 3Generate hash and copy the resulting digest.
- 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.