Protect PDF API

Protect and encrypt PDF documents securing with a password

The API for protecting PDF files with user or owner password. Protect PDF with 256-bit AES strongest and most secure level of encryption within the PDF format. Set additional PDF permissions for disabling editing or printing PDF. The files protected with this API guarantee that users' files will be under the best protection.

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API Endpoint

ConvertAPI offers a cloud-based solution, which makes Protect PDF conversion effortless with just a single REST-API call:

        HTTP POST
    
https://v2.convertapi.com/convert/pdf/to/protect

Postman OpenAPI cURL CLI

Authenticate your API call

Converting pdf to protect via REST-API is now easier than ever. Sign up for a free account to obtain your authentication secret, append it as a query string parameter to the conversion URL, and voilà! You can find advanced authentication techniques in our docs.

        QUERY AUTHENTICATION
    
https://v2.convertapi.com/convert/pdf/to/protect?secret=your-api-secret

Protect PDF using REST-API in no time!

Once you have your authentication in place, you can convert your files using application/json, multipart/form-data and application/octet-stream content types. A simple HTTP POST request using JSON would look like this:

// Code snippet is using the ConvertAPI JavaScript Client: https://github.com/ConvertAPI/convertapi-js

// Code snippet is using the ConvertAPI Node.js Client: https://github.com/ConvertAPI/convertapi-nodejs

// Code snippet is using the ConvertAPI PHP Client: https://github.com/ConvertAPI/convertapi-php

// Code snippet is using the ConvertAPI Java Client: https://github.com/ConvertAPI/convertapi-java

// Code snippet is using the ConvertAPI C# Client: https://github.com/ConvertAPI/convertapi-dotnet

# Code snippet is using the ConvertAPI Ruby Client: https://github.com/ConvertAPI/convertapi-ruby

# Code snippet is using the ConvertAPI Python Client: https://github.com/ConvertAPI/convertapi-python

// Code snippet is using the ConvertAPI Go Client: https://github.com/ConvertAPI/convertapi-go

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Conversion request using cURL

You can easily convert pdf to protect with a simple cURL request. Our documentation provides more advanced cURL request techniques.

File conversion using CLI

ConvertAPI CLI allows you to convert files using our command-line file conversion utility tool. Check out CLI documentation for a detailed explanation and usage examples.

REM Code snippet is using the command line utility program: https://github.com/ConvertAPI/convertapi-cli

Upload the file and see how it works

You can set up the advanced conversion parameters and test the conversion result online using our interactive demo tool. It will auto-generate the code snippet for you!

Advanced Protect PDF conversion parameters

EncryptionAlgorithm Collection

Sets the encryption algorithm.

Values: Standard40Bit Standard128Bit Aes128Bit Aes256Bit

EncryptMeta Bool

Encrypt metadata of PDF file.

UserPassword String

Sets the user password (also known as a document open password) in the output PDF document. Users will be asked to enter this password before Acrobat Reader allows them to view the PDF document.

Password String

Sets the password to open protected documents.

OwnerPassword String

Sets owner password (also known as a permissions password). Using a owner password, you can restrict printing, editing, and copying content in the PDF. Recipients don’t need a password to open the document. They do need a password to change the restrictions the owner set.

RespectOwnerPassword Bool

Enable the property if you want to respect the document's owner password and permissions. If disabled - the old owner's password and permissions will be removed by default. Setting this property requires you to enter the correct owner's password into the Password property for protected documents.

PreservePermissions Bool

Enable the property if you want to keep the document permissions unchanged. It requires you to specify the OwnerPassword. If enabled, the document permission properties will be ignored.

AllowEverything Bool

Enable or disable all permissions. The specific permissions listed below overrides this property.

AssembleDocument Bool

Enable or disable assembly of the document - insert, rotate, or delete pages and create bookmarks or thumbnail images.

CopyContents Bool

Enable or disable copy or extract text and graphics from the document.

ModifyContents Bool

Enable or disable changing the contents of the document.

ExtractContents Bool

Enable or disable extract text and graphics.

ModifyAnnotations Bool

Enable or disable adding or modifying text annotations and fill in interactive form fields.

FillFormFields Bool

Enable or disable fill-in existing interactive form fields, including signature fields.

PrintDocument Bool

Enable or disable document printing.

PrintFaithfulCopy Bool

Enable or disable printing of the document to a representation from which a faithful digital copy of the PDF content could be generated.