Security & Privacy

16+ tools

Practical, defensive security utilities that run locally — strong secrets, hashes and quick checks on what you already run. Password generators, hashes, tokens and certificate checks.

Generators

5 tools

Password Generator

Generate Password instantly with sensible, copy-ready defaults.

Passphrase Generator

Generate Passphrase instantly with sensible, copy-ready defaults.

Secure Token Generator

Generate Secure Token instantly with sensible, copy-ready defaults.

Random String Generator

Generate Random String instantly with sensible, copy-ready defaults.

UUID Generator

Generate UUID instantly with sensible, copy-ready defaults.

Encoding

4 tools

Base64 Encoder

Encode Base64 correctly for safe use in code and URLs.

URL Encoder

Encode URL correctly for safe use in code and URLs.

HTML Encoder

Encode HTML correctly for safe use in code and URLs.

JWT Decoder

Decode JWT safely in your browser — nothing is uploaded.

Hashing

5 tools

MD5 Hash

MD5 Hash — a free hashing tool in the Tools4U Security & Privacy collection.

SHA-1 Hash

SHA-1 Hash — a free hashing tool in the Tools4U Security & Privacy collection.

SHA-256 Hash

SHA-256 Hash — a free hashing tool in the Tools4U Security & Privacy collection.

SHA-512 Hash

SHA-512 Hash — a free hashing tool in the Tools4U Security & Privacy collection.

HMAC Hash

HMAC Hash — a free hashing tool in the Tools4U Security & Privacy collection.

Security Utilities

2 tools

Password Strength Checker

Check Password Strength and get a plain-English verdict you can act on.

Hash Identifier

Identify Hash from its shape and length.

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