Online hash generator: MD5, SHA-1, SHA-256, SHA-512 in the browser
Hashing is used for checksums, data integrity verification, password storage (with salt), API signatures, and fingerprinting content. MyDevTools Hash Generator runs all major algorithms in the browser without sending your data to a server.
Algorithm choice depends on the use case. MD5 and SHA-1 are broken for security purposes but still used for checksums. SHA-256 and SHA-512 are the current standard for security-sensitive contexts.
SHA-1: deprecated for TLS and signing; avoid for new security work.
SHA-256: standard for HMAC, JWT signatures, data integrity, and API auth.
SHA-512: higher security margin; used when SHA-256 feels insufficient for the threat model.
Hash generator vs HMAC generator
A plain hash has no secret key and is not authentication-safe. HMAC (Hash-based Message Authentication Code) combines hashing with a secret key, making it resistant to length-extension attacks and safe for API authentication.
Use hash for checksums and content fingerprinting.
Use HMAC for API request signing, webhook signature verification, and authentication.
MyDevTools has both a Hash Generator and a dedicated HMAC Generator.
Verdict
Any online hash tool generates correct hashes. MyDevTools adds HMAC, encryption, JWT, and password tools in the same security-focused section.
Best single-hash generation: any online tool.
Best hash + HMAC + encryption toolkit: MyDevTools.
Best open-source option: MyDevTools.
Common comparison questions
Is MD5 still safe to use?
MD5 is broken for cryptographic security — collisions can be generated. It is still acceptable for non-security purposes like cache keys and file checksums. Never use MD5 for password hashing or digital signatures.
Can I reverse a hash to get the original text?
No. Hashing is a one-way function. You cannot reverse a hash to recover the original input — only compare it against a known hash of a candidate input.
