Unlock password-protected PDF files online for free. Enter the document password to remove encryption and download an unprotected PDF. Supports RC4 encrypted PDFs (40/128-bit). 100% free, no uploads, fully private. Best free online PDF unlocker.
Drop your password-protected PDF here
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PDF only · Max 200 MB
200 MB
Max file size
Format
100% local
Privacy
~5 seconds
Speed
RC4 40/128-bit
Encryption
Free forever
Price
Combine multiple PDF files into a single document online. Merge PDFs in any order, rotate individual pages, and download the combined result — all processed locally in your browser.
Split PDF files into multiple documents online. Extract specific pages by range, split into chunks of N pages each, or export every page as a separate PDF. All processed locally in your browser.
Rearrange, rotate, and delete pages in your PDF files online. Reorder pages by drag-and-drop, rotate individual pages, remove unwanted pages, and download a perfectly organized PDF — all processed locally in your browser.
Crop PDF pages by removing unwanted margins. Drag the crop handles to select the visible area, choose from preset aspect ratios, and apply to all or specific pages — all processed locally in your browser.
Delete unwanted pages from your PDF files online. Select pages to remove from a visual thumbnail grid, keep only the pages you need, and download a clean PDF — all processed locally in your browser.
Rotate individual PDF pages or all pages at once. Clockwise 90°, counter-clockwise 90°, or 180° rotation. Visual thumbnail grid, batch rotate all, reset all — all processed locally in your browser.
Password-protected PDFs help secure sensitive information, but there are times when you need to remove that protection — whether you have forgotten the password to your own file, received a password-protected document from a colleague with permission to use it, or simply want to streamline document workflows without password prompts. The Unlock PDF tool lets you remove password protection from any PDF file using industry-standard decryption, all directly in your browser with no file uploads to any server.
Simply upload your password-protected PDF, enter the document password, and download a fully unlocked copy that can be opened by anyone. The tool supports RC4 encrypted PDFs (40-bit and 128-bit) — the most common encryption standard used by Adobe Acrobat and virtually all PDF creation tools. A clear detection system identifies whether your PDF is actually encrypted before asking for a password, saving you time on non-protected files.
All processing runs entirely in your browser using pdf-lib. Your files and passwords never leave your device — complete privacy for sensitive documents. The responsive layout works seamlessly across phones, tablets, and desktops, making it easy to unlock PDFs on any device.
Tip: If you are the original author of the PDF, the password was set when the document was created. Common passwords include document titles, company names, or dates. If the password is incorrect, try variations of these before contacting the document owner.
Input: "quarterly-report-protected.pdf" (32 pages, 8.2 MB, password-protected)
Situation: A team member shared a password-protected quarterly financial report with you. They provided the password "Q4-FY2024" via a separate secure message. You need to extract charts and data from the report for a presentation, and the password prompt is blocking your workflow.
Step 1 - Upload: Drop quarterly-report-protected.pdf onto the upload area. The file info bar shows the document name, size, and "Password-protected" status, confirming the PDF is encrypted.
Step 2 - Enter password: Type "Q4-FY2024" in the Password field. The show/hide toggle lets you verify the text before proceeding.
Step 3 - Process: Click the floating Unlock PDF button. The PDF is decrypted in milliseconds using pdf-lib while a 5-second spinner provides visual feedback.
Output: "quarterly-report-protected-unlocked.pdf" — all 32 pages are fully decrypted with no password protection. The file opens immediately in any PDF reader without prompting for a password, making it easy to extract content for your presentation.
Note: Always keep a copy of the original password-protected PDF if you need to verify the document integrity or if you want to re-apply protection after modifications.
The tool supports Standard RC4 encryption (40-bit and 128-bit) — the most common encryption type used by Adobe Acrobat and most PDF creation tools. It does not support AES encryption (128-bit or 256-bit). If your PDF uses AES encryption, you will see a clear error message explaining the limitation.
You should only unlock PDF files for which you have the legal right to access the content. This includes files you created yourself, files shared with you by colleagues with the password, or files where you have explicit permission to remove protection. Unlocking PDFs without authorization may violate copyright or data protection laws.
An inline error message appears below the password field stating "Incorrect password." The tool does not limit the number of attempts, so you can try different passwords as needed. If you have exhausted all possible passwords, contact the document author to obtain the correct one.
No. The tool requires the correct document password to decrypt the file. PDF encryption is designed to be computationally infeasible to bypass — there is no backdoor or brute-force capability. If you forgot the password, try common variations like document titles, dates, or company names that might have been used.
No. Your original password-protected PDF is never modified. The tool reads the file, decrypts it using the provided password, and creates a new unlocked copy for download. Your original file remains completely untouched on your device.
The maximum file upload size is 200 MB. If your file exceeds this limit, a clear error message explains the constraint. For larger files, consider using our PDF Compressor tool first to reduce file size.
Absolutely. All processing happens entirely in your browser using client-side JavaScript running pdf-lib. Your PDF files and passwords are never uploaded to any server. The decryption is performed locally using the Web Crypto API — your data never leaves your device.
Yes, the tool is fully responsive and works on any modern mobile browser. All form controls are touch-friendly with clear labels and validation feedback, and the layout adapts seamlessly from phones to tablets to desktops.
Yes. Decryption does not alter the PDF content in any way — all pages, images, fonts, formatting, and metadata remain exactly as they were in the original file. The only change is that password protection is removed.
Yes. The tool accepts both the user password (required to open the document) and the owner password (required to change permissions). Either password will successfully decrypt the file and produce an unlocked PDF.
Yes. The unlocked PDF uses standard PDF format without encryption, which is supported by every PDF reader — Adobe Acrobat, browser PDF viewers (Chrome, Firefox, Edge, Safari), mobile PDF apps (Adobe Reader, Foxit), and open-source readers (Evince, SumatraPDF).
The actual decryption is nearly instantaneous — typically under a second for most documents. The tool displays a 5-second processing spinner to provide consistent visual feedback and ensure you see a clear transition from input to output.
Yes, the Unlock PDF tool is completely free with no hidden costs, subscriptions, or premium tiers. No watermarks, usage limits, or registration required. Unlock as many PDFs as you need.
Yes. If you used the Protect PDF tool on this website to password-protect a file, you can use the Unlock PDF tool to remove that protection. Simply enter the same password you used when protecting the file.
