This tutorial shows how to PDF Python developers can change a PDF password using the Aspose PDF Cloud REST API. You’ll learn to reset a protected PDF by providing the current password together with the new user and owner passwords, all through the convenient Python SDK.
Prerequisite
- Create an API account and obtain credentials to authenticate requests
- Download the Aspose.PDF Cloud SDK for Python
- Set up a Python project and install the SDK package
Steps to Change Password of PDF using Python REST Interface
- Import the required classes from the SDK for password manipulation
- Instantiate the PdfApi object with your client ID and client secret
- Read the source PDF file into a memory stream and upload it to Aspose Cloud storage
- Convert the old password, new user password, and new owner password to Base64 strings
- Call PostChangePasswordDocumentInStorage to apply the new passwords, passing the file name and the Base64‑encoded passwords
- Use DownloadFile() to retrieve the updated PDF from storage
- Save the returned stream locally as a PDF file
These steps demonstrate how to change a PDF password online using the Python‑based API. Import the necessary classes, create a helper to encode strings to Base64, load and upload the source PDF, generate the required password strings, invoke PostChangePasswordDocumentInStorage, and finally write the resulting stream to disk.
Code to Change Password of PDF File using Python RESTful Service
Use the code above to change the password on an Adobe PDF via the Python REST API. The input file must already be password‑protected, and you need to know its existing password; otherwise the operation will fail.
For information on removing a password from an encrypted PDF, see the article Decrypt PDF using Python REST API.
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