GPG Symmetric Encryption
AES-256-GCM with DevTools armored blocks — not OpenPGP / gpg -d compatible
About this tool
Encrypt text with a passphrase using Web Crypto AES-256-GCM and DevTools-specific armored blocks. Output is NOT compatible with gpg -d — use openpgp.js for real OpenPGP interoperability.
Common mistakes
Mistake:Expecting GNU GPG compatibility.
Fix:This is a DevTools education format — decrypt only in this tool or with matching Web Crypto code.
Frequently asked questions
Related tools
AES Encryption
Encrypt and decrypt text with AES-GCM and a passphrase, fully in your browser. Uses PBKDF2 key derivation and the Web Crypto API — your data and keys never leave your device.
Basic Auth Generator
Generate an HTTP Basic Authentication header from a username and password. Produces the Authorization header and ready-to-use curl and fetch snippets. Runs fully client-side.
Bcrypt Generator & Verifier
Hash passwords with bcrypt and verify hashes — choose your cost factor (rounds 4–15), get a secure hash instantly, and check whether a password matches a hash. Runs entirely in your browser.
BIP39 Mnemonic Generator
Generate and validate BIP39 seed phrases locally for testing
Checksum Calculator
Compute file checksums (SHA-1, SHA-256, SHA-384, SHA-512) in your browser with the Web Crypto API
CORS Header Validator
Validate Cross-Origin Resource Sharing headers for security compliance