Back to toolkit
Encrypt PDF
Everything runs in your browser · files never leave your device
Drop a file or click to choose
local · in-browser
Note: pdf-lib doesn't ship an AES encrypter. This entry marks and writes a protected-copy metadata field. Full AES-128 will be an on-demand WASM module (≈ 200 KB) wired in via the editor's advanced menu.
Ad slot · placed by route only, never reads file contents.