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Falcon Pdf

Protect · In your browser

A password set here is set by you.

Falcon Protect is a PDF protection tool that adds a password and configurable permissions (print, copy, edit) to a PDF before it goes out. An optional anti-tamper QR can also be stamped. The encryption happens on your computer, in this browser tab.

The cleartext PDF opens in this tab. The password is applied on your computer; the encrypted file is the only version that travels. By design.

Browser-only · no upload · Updated 2026-05-28

Why this tool exists

When you upload a PDF to a “protect” tool to add a password, you have already broken the assumption. The cleartext file — the one you were about to encrypt — is now on someone else’s disk, in cleartext, indexed against whatever they index against. The padlock is added to a horse that has already left the stable.

Encryption that runs on your computer applies the password before anything leaves the tab. The cleartext file stays where it always was. The protected version is the first form of the document anyone else will ever see.

Drop a PDF here to protect it

or

Your PDF is opened, encrypted, and saved in this tab. Nothing about its contents is sent to a Falcon server.

Step-by-step

How to use Falcon Protect

Falcon Protect is a PDF protection tool that adds a password and configurable permissions (print, copy, edit) to a PDF before it goes out. An optional anti-tamper QR can also be stamped. The encryption happens on your computer, in this browser tab.

  1. 01

    Open the PDF you want to protect.

  2. 02

    Set a password and choose which permissions to allow.

  3. 03

    Save — the PDF is re-encrypted.

  4. 04

    Download the protected PDF.

Updated 2026-05-28

FAQ

Common questions

Is my file sent anywhere when I add a password?

No. The PDF opens in this browser tab and the password is applied on your computer, then the protected file is written back here. Nothing is uploaded — the document you are securing never leaves your device to be secured.

What does adding a password stop someone from doing?

An open-password stops anyone without it from opening the file at all. The protection travels with the document, so it holds wherever the file is later sent or stored.

Will the protected file open everywhere?

Yes. The protection uses the standard PDF encryption that readers and viewers understand, so the file opens normally once the correct password is entered, on any compliant reader.

What happens if I forget the password I set?

There is no back door. If you lose the open-password, the file cannot be opened — by you or anyone else. Keep the password somewhere safe; a protected PDF is only as recoverable as the password you remember.

How your file stays private

No upload

Opens, parses, rewrites on your device. Nothing about the contents transits a Falcon server.

Zero logs

No filenames, sizes, contents, or per-file telemetry. Operation counts only.

No trackers

Open the Network tab during use. Only first-party JS appears in the request log.

Metadata stripped

Authors, edit history, EXIF, and embedded thumbnails are removed alongside the visible content.

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A redaction that never travels. Black boxes are applied where the file was opened, before anything is saved or sent.

Falcon Unlock

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The lock is yours to remove. Owner-set restrictions on a PDF you legally own come off here, where the file already lives.

Falcon Watermark

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A mark you place. Stamp DRAFT, CONFIDENTIAL, or a name across every page — placement, size, and opacity yours to set.

Falcon Merge

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Two files become one, both stay yours. Drop, reorder, and stitch — the combined PDF is composed in the tab.