PDF Vault — Password Protect PDFs in Your Browser

1

Choose your PDF

processed locally, never uploaded

Drop your PDF here or browse files — up to any size your browser allows

2

Password

Confirm password

Advanced options

Current password only if this PDF is already protected

Owner password optional — controls permissions; defaults to open password

Encryption strength

AES · 256-bitrecommended AES · 128-bitwide compatibility RC4 · 40-bitlegacy only

Permissions restrictions enforced with the owner password

Printingallow printed output

Copy text & imagesextract content

Annotate & fill formscomments, signatures

Edit & reorganizemodify pages / content

Keep document metadata (title, author…) readable without the password

3

Nothing is uploaded — encryption runs locally via WebAssembly (QPDF)

Encryption: Size: