Text Diff Checker
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Compare two pieces of text and see line-by-line additions and deletions, like a Git diff. Highlights every change.
Hash Generator
★★★★★★★★★★5.0(0 ratings)👁 2❤ 0
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes of any text. Useful for checksums, fingerprints, and integrity checks.
Hash Generator
About This Tool
What is a Hash?
A cryptographic hash takes input of any size and produces a fixed-length output that’s effectively unique to that input. Change one bit of the input, and the entire hash changes unpredictably. The same input always produces the same hash.
Algorithms Supported
- MD5 — 128 bits, fast but cryptographically broken; OK for non-security checksums
- SHA-1 — 160 bits, deprecated for cryptographic use; still common in version control (Git)
- SHA-256 — 256 bits, current standard for security and cryptocurrency
- SHA-512 — 512 bits, used where extra collision resistance matters
Use Cases
- File integrity checking (verify a download wasn’t tampered with)
- Fingerprinting unique content (deduping by hash)
- Digital signatures and certificates
- Password storage (always with a salt and a slow hash like bcrypt/Argon2 — not raw SHA)
Important
Don’t use plain MD5 or SHA for password storage. Those are designed to be fast, which is the opposite of what password hashing needs. Use bcrypt, scrypt, or Argon2 in real applications.
Frequently Asked Questions
Are these hashes computed in my browser?
Yes. SHA-1/256/512 use the browser's native Web Crypto API. MD5 uses a pure-JavaScript implementation in this tool. Nothing is sent to a server, so your input is private.
Why is MD5 considered broken?
Cryptographers can produce collisions (two different inputs that hash to the same value) for MD5 in seconds. That makes it unsuitable for digital signatures or security applications, but it's still fine for non-malicious checksums where you just want to verify a file isn't accidentally corrupted.
Should I use SHA-256 or SHA-512?
SHA-256 is the standard everywhere u2014 used by Bitcoin, TLS certificates, Git's newer object hashes, and most modern systems. SHA-512 is faster on 64-bit CPUs and offers more collision resistance, but the difference rarely matters in practice.