What does Unlock PDF do?
Unlock PDF is a free online tool that can remove password encryption from a PDF. The PDF result from Unlock PDF is a separate copy to inspect before you use it elsewhere. One possible use is owned files prepared for a local editing workflow.
Unlocking decrypts a PDF when qpdf can open it with the password you provide. It is useful for a file you are authorized to access when a password requirement obstructs a legitimate local workflow.
The password field can be left empty for a file that does not require an opening password. Keep ownership and permission in mind: the tool does not establish your right to use a file merely because work succeeds.
An unlocked copy can be shared without the old opening prompt. Decide where that copy should be stored before making it.
A password typo can stop the job even when you own the source. Check the spelling without sharing it in a support message. Keep the protected source for later use.
Decrypt an authorized PDF online: steps
Before using Unlock PDF, decide what the new copy must contain and where it will be used. Enter the correct opening password when one is required, and check you have authority to remove the protection. Review the upload area and all values required by the current Unlock PDF form.
Choose the source
Keep an unlocked working copy inside the approved folder. For Unlock PDF, choose one source from your device. Keep a source copy for another attempt.
Review the form values
Password controls a value used by Unlock PDF. Enter your chosen Password value.
Run the file task
Use Process Unlock PDF after checking the source and form values. Wait for the job to finish. An error means this attempt failed.
Save and check the output
Open the downloaded copy without a password and check page content and any remaining viewer restrictions. Store the output on your device. Name this copy separately from the original.
Decrypt PDF: uses for Unlock PDF
Unlock PDF can help with authorized reports made easier to combine. It can also be used for files decrypted before extracting permitted pages. The PDF result from Unlock PDF must suit the intended reading or editing step, so keep the source until that check is complete.
- Owned files prepared for a local editing workflow.
- Authorized reports made easier to combine.
- Files decrypted before extracting permitted pages.
- Password-free working copies created for an approved team.
Formats and limits for Unlock PDF
The Unlock PDF form accepts PDF sources. Each Unlock PDF upload can be up to 300 MB, which equals 300 MiB. The allowed suffixes on the Unlock PDF page do not prove that a source has valid content inside it.
| Accepted formats | Maximum file size | Output |
|---|---|---|
| 300 MB per file (300 MiB upload limit) |
This tool does not discover or crack an unknown strong password. Decryption can affect signature validation and should be performed on an authorized copy.
How this tool works
Unlock PDF uses qpdf to handle the source on the server. The Unlock PDF request uses your chosen input rather than any local editing project left on your device. Check the PDF contents produced by Unlock PDF before treating them as ready for another app or reader.
For Unlock PDF, your browser uploads the source to our file-processing server. This is a server task, not local editing.
Files are due for deletion within 1 hour. Cleanup runs during normal service operation. Keep a local download for future use.
Unlock PDF questions and answers
If Unlock PDF gives an unexpected result, start by checking the source type and the values used in the form. Check the PDF contents from Unlock PDF as well as the filename or displayed message. For another result type, compare Unlock PDF with the separate tools described in these answers.
What matters when using Unlock PDF?
Check access rights before passing the new copy to an editor. View that area at its intended display size. Note any differences that affect your purpose.
Why try Protect PDF?
Protect PDF offers another task beside Unlock PDF: encrypt PDF with a password. Protect PDF returns PDF. The stated PDF output from Unlock PDF matches a listed input type for Protect PDF.
Why try Merge PDF?
Merge PDF offers another task beside Unlock PDF: combine multiple PDF files into one. Merge PDF returns PDF. The stated PDF output from Unlock PDF matches a listed input type for Merge PDF.
Why try Extract PDF Pages?
Extract PDF Pages offers another task beside Unlock PDF: extract specific pages to a new PDF. Extract PDF Pages returns PDF. The stated PDF output from Unlock PDF matches a listed input type for Extract PDF Pages.
What if my PDF result does not open?
For a failed Unlock PDF result, first confirm that the download completed and that the viewer supports PDF. Try another local viewer for that format.
Record any error message for support. Keep private source material out of the report.
How do I report a problem with Unlock PDF?
Contact support with the Unlock PDF page name, source format and the error you saw. Mention any relevant form settings you chose. Do not send passwords or private attachments.