Free Security & privacy tools
Nothing goes out of your device.
27 tools
- Password GeneratorCreate a cryptographically random password from selected character sets.
- Passphrase GeneratorCreate a memorable random passphrase with measurable entropy.
- Random BytesGenerate cryptographically strong bytes as HEX or Base64.
- UUID v4 GeneratorGenerate a standards-shaped UUID from browser randomness.
- SHA-256 Text ChecksumCalculate a SHA-256 checksum for UTF-8 text.
- SHA-384 Text ChecksumCalculate a SHA-384 checksum for UTF-8 text.
- SHA-512 Text ChecksumCalculate a SHA-512 checksum for UTF-8 text.
- SHA-256 File ChecksumCalculate a SHA-256 checksum for a local file.
- SHA-384 File ChecksumCalculate a SHA-384 checksum for a local file.
- SHA-512 File ChecksumCalculate a SHA-512 checksum for a local file.
- Encrypt TextEncrypt text with AES-256-GCM and a PBKDF2-derived key.
- Decrypt TextAuthenticate and decrypt an Ephenox encrypted text envelope.
- Encrypt FileEncrypt a local file into an authenticated, versioned container.
- Decrypt FileAuthenticate and decrypt an Ephenox encrypted file container.
- HMAC sign & verifyCreate or verify an HMAC signature for local text.
- TOTP & HOTP codesGenerate or validate standards-based one-time passwords locally.
- UUID v7 & ULID generatorGenerate time-sortable identifiers with secure browser randomness.
- Create ZIP archiveBundle multiple local files into one ZIP in a background worker.
- Extract ZIP archiveInspect and extract safe entries from a local ZIP archive.
- GZIP compressorCompress one local file as GZIP without an upload.
- GZIP extractorDecompress a local .gz file in a background worker.
- Split large fileDivide a file into numbered, byte-exact parts for local transfer.
- Join file partsReassemble numbered parts in deterministic filename order.
- File integrity manifestCreate a SHA-256 manifest for a group of local files.
- Local secret scannerFind likely credentials, private keys, tokens, risky URLs, and high-entropy strings without uploading code.
- JWT signature verifierVerify compact JWT signatures with a local secret, JWK, or PEM public key.
- PEM, JWK & X.509 inspectorInspect certificate, public-key, and JWK metadata plus local fingerprints without claiming trust.