This tutorial demonstrates how to PDF Java developers can remove a password from a PDF document using the Aspose.PDF Cloud REST API, with step‑by‑step guidance on uploading the encrypted file, invoking the decryption endpoint, and downloading the unlocked PDF from cloud storage. For more details on the PDF format, see the PDF file information page.
Prerequisite
- Create an account and obtain API credentials to work with the PDF API
- Download the Aspose.PDF Cloud SDK for Java
- Set up a Java project and add the SDK as a dependency
Steps for Removing Password from PDF Document using Java Low Code API
- Import the required classes from the SDK
- Instantiate the PdfApi object with your client ID and client secret
- Load the encrypted PDF file into a FileInputStream
- Encode the PDF password as a Base64 string
- Call the PutDecryptDocument method, supplying the file name, password, and storage details
- Use the DownloadFile method to retrieve the decrypted PDF from cloud storage
The sequence above outlines how to decrypt PDF using the Java‑based API: create the PdfApi instance, read the source PDF into memory, set the opening password, convert it to Base64, invoke PutDecryptDocument, and finally download the unlocked file.
Code for Removing Password from PDF Online using Java REST Interface
The sample code decrypts a PDF file on the server. When PutDecryptDocument() is executed, you specify the output file name that will be stored in the cloud; the subsequent DownloadFile call fetches this decrypted PDF.
To learn how to add password protection to a PDF, refer to the article Add Password Protection to PDF using Java REST API.
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