Quikbench
Quikbench
Add a password to a PDF so it needs one to open, right here in your browser tab. Nothing is uploaded to a server — open your network tab if you don't believe it.
Add a PDF, choose a password to protect it with, and get back a new, encrypted PDF that requires that password to open.
Every tool on Quikbench follows the same rule: your files are read, converted, and turned into a download entirely inside this browser tab — nothing is ever uploaded to a server.
Reads your PDF locally using pdf.js, renders each page to a canvas at high resolution, then rebuilds a new PDF from those page images with jsPDF — encrypted with the password you choose. Nothing is uploaded.
Add your PDF. If the file already has a password, enter it under "current password" so the tool can open it first. Then set a new password — this becomes the password required to open the file. You can optionally set a separate owner password; if left blank, it defaults to the same value as your new password.
This tool only adds protection. If you want to remove an existing password from a PDF instead, use Unlock PDF.
Because everything runs in your browser without a server-side PDF library that can encrypt in place, this tool re-renders each page to a high-resolution image before rebuilding the PDF. That means visual quality stays sharp, but text in the output is no longer selectable or searchable — the pages are images, not text layers. If you need to keep selectable text and only need to reorder or extract pages, try Split PDF or Rearrange PDF Pages instead, which copy the original page objects directly.
The new (user) password is what someone needs to type to open and view the file. The owner password governs permissions like printing, copying, or editing, and can be set separately — leave it blank and it defaults to the same value as your new password. Most people only need to set the new password.
Only if the file is already password-protected — enter its current password so the tool can open it first. If the PDF has no existing password, leave that field blank and just set your new password.
No — because everything runs locally without a server, protecting a PDF works by rendering each page to an image and rebuilding an encrypted PDF from those images. Visual quality is preserved, but text is no longer selectable or searchable in the output.
The new password (user password) is required to open and view the file. The owner password governs permissions like printing or editing. If you leave the owner password blank, it defaults to the same value as your new password.
No. The file is read and processed entirely inside your browser tab using pdf.js and jsPDF. Nothing — not the file, not any password you type — is sent to a server.
Not on this page — this tool only adds protection. To remove an existing password from a PDF, use the Unlock PDF tool instead.