What it does

Removes password protection from PDF documents. The resulting file can be opened, printed, edited or shared without needing the original password.

Inputs and limits

• Input: a single PDF file (maximum size 32 MB).
• The password must be supplied; the tool does not attempt brute‑force cracking.
• Output: the same PDF content without password protection.

Web app

The page asks you to upload a locked PDF, enter the password, and click Unlock. After processing, the unlocked PDF is offered for download. The interface includes a text field labeled “Type password”. The description states that the service does not store files beyond 24 hours and does not keep passwords.

Command line (CLI)

The UnlockPdf CLI plugin removes password protection from a PDF placed in the task’s input folder. It writes the unlocked PDF to the task’s output folder. ```bash

Linux / macOS (needs the .NET 10 runtime and documentize.lic next to the DLL)

export PLUGIN_INPUT_DIR=./work/input export PLUGIN_OUTPUT_DIR=./work/output mkdir -p "$PLUGIN_INPUT_DIR/job1" cp sample.pdf "$PLUGIN_INPUT_DIR/job1/" dotnet Documentize.UnlockPdf.dll --task-id job1 ls "$PLUGIN_OUTPUT_DIR/job1"

```powershell
# Windows PowerShell
$env:PLUGIN_INPUT_DIR  = "$PWD\work\input"
$env:PLUGIN_OUTPUT_DIR = "$PWD\work\output"
New-Item -ItemType Directory -Force "$env:PLUGIN_INPUT_DIR\job1" | Out-Null
Copy-Item sample.pdf "$env:PLUGIN_INPUT_DIR\job1\"
dotnet Documentize.UnlockPdf.dll --task-id job1
Get-ChildItem "$env:PLUGIN_OUTPUT_DIR\job1"

Verified

Every code sample on this page was run on 2026-11-03 and its result was checked:

• Unlock PDF (no password) via CLI (CLI plugin): passed in 4 s