How to Unlock a PDF File Free — Remove Password and Restrictions

A locked PDF file stops you from opening it, editing it, copying text from it, or printing it. Whether you forgot the password to a PDF you created yourself, received a restricted PDF that prevents copying or editing, or need to modify a protected document, unlocking a PDF is a common and legitimate need.

This complete guide explains every free method to unlock a PDF file in 2026 — removing open passwords, lifting editing and printing restrictions, and making locked PDF content accessible — on Windows, Mac, iPhone, iPad, and Android.

Understanding the Two Types of PDF Locks

Before choosing an unlocking method, it is important to understand that PDF files can be locked in two completely different ways, and they require different approaches.

Type 1 — Open Password (Document Open Password)

An open password prevents anyone from opening the PDF at all. When you try to open the file, you see a password prompt. Without the correct password, you cannot view, read, or access the document in any way.

To unlock a PDF with an open password, you must know the correct password. There is no legitimate free tool that can bypass strong AES-256 encryption — claims to the contrary are almost always malware or scams. If you know the password, you can remove it using the methods below. If you have forgotten the password to a PDF you created yourself, some recovery tools may help if the password was short or simple.

Type 2 — Permissions Restrictions (Owner Password)

Permissions restrictions do not prevent you from opening the PDF — you can read it normally. But they prevent certain actions: copying text, editing content, printing, adding annotations, extracting pages, or filling in forms.

These restrictions are enforced by the PDF viewer respecting the permissions embedded in the file. Many free tools can remove permissions restrictions from a PDF you are entitled to use, because this type of protection is significantly weaker than open password encryption.

Method 1 — Unlock PDF Using Google Chrome (Remove Restrictions, Free)

Google Chrome can effectively remove permissions restrictions from a PDF that you can already open. This method works on Windows, Mac, and Android.

Open the restricted PDF in Google Chrome — drag and drop the file into a Chrome window, or go to File then Open. Chrome opens and displays the PDF normally. Press Ctrl and P on Windows or Command and P on Mac to open the print dialog. In the printer dropdown, select Save as PDF. Click Save and choose where to save the new file.

The PDF saved through Chrome's print-to-PDF function is a new file with no permissions restrictions. Text can be copied, the file can be edited in PDF editors, and pages can be extracted. This method works because Chrome renders the PDF visually and creates a new PDF from the rendered output, which does not inherit the original file's permission restrictions.

After unlocking, if you need to edit the text content, use our PDF to Word tool to convert the unlocked PDF to an editable Word document.

Method 2 — Unlock PDF on Mac Using Preview (Remove Restrictions and Open Password)

Mac's Preview app can remove both permissions restrictions and open passwords from PDFs you have legitimate access to.

Removing permissions restrictions: Open the restricted PDF in Preview — since you can already open it, no password is needed. Go to File then Export as PDF. In the export dialog, make sure the Encrypt checkbox is not checked. Click Save. The exported PDF has no restrictions applied.

Removing an open password (if you know the password): Open the PDF in Preview and enter the password when prompted. Go to File then Export as PDF. In the export dialog, uncheck the Encrypt checkbox. Enter the current password if prompted. Click Save. The new PDF file has no password protection.

After removing restrictions, use our Compress PDF tool if the file size increased after export.

Method 3 — Unlock PDF Using Microsoft Word (Windows)

If you have Microsoft Word installed, you can use it to remove restrictions from a PDF by opening it and re-exporting as a clean PDF.

Open Microsoft Word. Go to File then Open and select the restricted PDF. Word converts the PDF to an editable document automatically. Make any edits you need, or leave the content unchanged. Go to File then Save As and choose PDF as the format. Save the new file.

The saved PDF is a fresh document with no inherited restrictions from the original. This method also allows you to edit the content in Word before re-exporting, which is useful when you need to update the document as well as remove restrictions.

Method 4 — Unlock PDF Online Free (Browser-Based Tools)

Several free browser-based PDF unlocker tools can remove permissions restrictions from PDFs you have legitimate access to. These tools process the PDF and deliver an unlocked version without requiring any software installation.

When using an online PDF unlocker, always choose a tool that processes files in your browser rather than uploading to a remote server, confirms immediate file deletion after processing, and does not add watermarks to the output. Our tools at SmartPDFMasters process files locally in your browser for maximum privacy.

For PDFs where you need to edit the content after unlocking, use our PDF to Word tool to convert the unlocked document to an editable format. To combine the unlocked PDF with other documents, use our Merge PDF tool.

Method 5 — Unlock PDF on iPhone and iPad

iPhone and iPad can remove permissions restrictions from PDFs using the built-in Files app and Markup tools.

Open the restricted PDF in the Files app. Since you can already view it, permissions restrictions do not block reading. Tap the Share button and choose Print. On the print preview screen, pinch outward with two fingers on the preview thumbnail — this converts the print preview to a PDF. Tap the Share button in the top right corner. Choose Save to Files. The saved PDF is a new file without restrictions.

For PDFs with an open password on iPhone, enter the password when prompted by the Files app to open the document, then use the Share then Print method above to save an unrestricted copy.

Method 6 — Unlock PDF on Android

Android users can use Google Chrome's print-to-PDF method to remove permissions restrictions.

Open the PDF in Chrome for Android. Tap the three-dot menu and choose Print. In the printer dropdown, select Save as PDF. Tap the save icon to download the unrestricted file.

For PDFs that require an open password on Android, open them in Adobe Acrobat Reader (free version), enter the password, then use Chrome's print-to-PDF method to save an unrestricted copy.

What to Do After Unlocking a PDF

Once you have an unlocked PDF, you have several options depending on what you need to do with it.

Edit the content: Use our PDF to Word tool to convert the unlocked PDF to a fully editable Word document. Make your changes in Word or Google Docs, then export back to PDF.

Combine with other files: Use our Merge PDF tool to combine the unlocked PDF with other documents into one file.

Reduce file size: Use our Compress PDF tool to reduce the unlocked PDF's file size before sharing.

Rotate pages: Use our Rotate PDF tool to fix any page orientation issues.

Split into sections: Use our Split PDF tool to extract specific pages from the unlocked document.

Important Legal and Ethical Considerations

PDF passwords and restrictions exist to protect the interests of document creators and owners. Removing protection from a PDF you do not own or are not entitled to access is illegal in most jurisdictions under computer misuse and copyright laws.

The methods described in this guide are appropriate only for PDFs you created yourself, PDFs you have received and are entitled to use, documents where you have forgotten the password to your own file, and PDFs where restrictions are preventing legitimate use of content you have legal access to.

Never use PDF unlocking tools to circumvent protection on copyrighted content, confidential business documents you are not authorised to access, or files where the password protection was applied specifically to prevent your access.

Frequently Asked Questions

How do I unlock a PDF for free?

Use Google Chrome's print-to-PDF method to remove permissions restrictions from any PDF you can open. Go to File then Print, select Save as PDF, and save the new unrestricted file.

How do I remove a PDF password without knowing it?

If the password is an open password using strong AES-256 encryption, there is no free method to remove it without knowing the password. Permissions restrictions (which do not prevent opening) can be removed using Chrome's print-to-PDF method or Preview on Mac.

How do I unlock a PDF on iPhone?

Open the PDF in the Files app, tap Share then Print, pinch outward on the print preview to convert it to a PDF, then tap Share and save the unlocked file to Files.

What is the difference between an open password and PDF restrictions?

An open password prevents anyone from opening the PDF without the password. PDF restrictions allow the PDF to be opened and read but prevent specific actions like copying text, editing, or printing.

How do I copy text from a locked PDF?

If the PDF has permissions restrictions preventing copying but can be opened, use Chrome's print-to-PDF method to create an unrestricted copy, then copy text from the new file. If the PDF has an open password, you must enter the correct password to open it first.