How to Remove Password/Protection from PDF in Salesforce Apex using PDF.co

Step 1: Create Remote Site Settings

Create three remote site settings in the Salesforce Org like below:

Please Note that URL here is “https://api.pdf.co”.

Please Note that URL here is “https://pdf-temp-files.s3.amazonaws.com”.

Please Note that URL here is “https://pdf-temp-files.s3.us-west-2.amazonaws.com”.

Step 2: Create Apex Class in Salesforce

Create an apex class in Salesforce like below and paste the code there:
Once you login to the Salesforce org, you will see the screen like below and click on “Developer Console”.

Create an apex class. For this, click on “Files” then “New” then “Apex Class”.

Write the class name “RemoveProtectionFromPDF” and click “Ok”. Now copy the RemoveProtectionFromPDF code in this file.

Similarly, create a new file with the name “RemoveProtectionFromPDFTest” and copy the code.

Step 3: Add Key in the File

In the ProtectPDFDocument file, please add your API key by replacing the ‘******************************************’:

Then please add the fileName which we imported in Salesforce and the Destination file name which you want as a PDF.

Step 4: Verify Code

To Verify the code, please open the execute Anonymous window and call the method like below:

Then Click on “Execute”.

Step 5: Search Files

Now, Search Files from the “App Launcher”.

You will see your protected pdf file there.

Step 6: Source Code Files

RemoveProtectionFromPDF.cls

public class RemoveProtectionFromPDF {
    
    String API_KEY = '"*****************************************';

    String fileName = 'sample'; // File name "sample.pdf" which is available in Files.
    string DestinationFile =  'result.pdf'; //This is the Desitantion File Name.

    // The owner/user password to open file and to remove security features
    string PDFFilePassword = 'admin@123';

    public void startProcessing()
    {
        ContentVersion cv = [select Title, VersionData from ContentVersion where Title = :fileName limit 1];
        Blob SourceFile  = cv.VersionData;
        
        try
        {
            //1. Prepare URL for "Get Presigned URL" API call
            string url = 'https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=:fileName'; 
            HttpRequest req = new HttpRequest();
            req.setHeader('x-api-key', API_KEY);
            req.setEndpoint(url);
            req.setMethod('GET');
            req.setTimeout(60000);
            Http http = new Http();
            HTTPResponse res = http.send(req);
            if(res.getStatusCode() == 200) 
            {
                System.Debug('res ' + res);
                Map<String, Object> deserializedBody =  (Map<String, Object>)JSON.deserializeUntyped(res.getBody());
                Boolean isError = Boolean.ValueOf(deserializedBody.get('error'));
                if(isError == false)
                {
                    // Get URL to use for the file upload
                    String uploadUrl = String.ValueOf(deserializedBody.get('presignedUrl'));
                    // Get URL of uploaded file to use with later API calls
                    String uploadedFileUrl = String.ValueOf(deserializedBody.get('url'));
                    // 2. UPLOAD THE FILE TO CLOUD.
                    if(uploadFile(API_KEY, uploadUrl, SourceFile))
                    {
                        // 3. Remove Password Protection from Uploaded file and download.
                        RemovePasswordProtectionFromInputPDF(API_KEY, DestinationFile, uploadedFileUrl, PDFFilePassword);
                    }
                }
            }
            else
            {
                System.debug('Error Response ' + res.getBody());
                System.Debug(' Status ' + res.getStatus());
                System.Debug(' Status Code' + res.getStatusCode());
                System.Debug(' Response String' + res.toString());
            }
            
        }
        catch(Exception ex)
        {
            String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString();
            System.Debug(errorBody);
        }
    }
    
    @TestVisible
    public static boolean uploadFile(String API_KEY, String url, Blob sourceFile)
    {
        HttpRequest req = new HttpRequest();
        req.setHeader('x-api-key', API_KEY);
        req.setHeader('Content-Type', 'application/octet-stream');
        req.setEndpoint(url);
        req.setMethod('PUT');
        req.setTimeout(60000);
        req.setBodyAsBlob(sourceFile);
        Http http = new Http();
        HTTPResponse res = http.send(req);
        if(res.getStatusCode() == 200) 
        {
            System.Debug(res);
            return true;
        }
        else
        {
            System.debug('Error Response ' + res.getBody());
            System.Debug(' Status ' + res.getStatus());
            System.Debug(' Status Code' + res.getStatusCode());
            System.Debug(' Response String' + res.toString());
            return false;
        }
    }
    
    public static void RemovePasswordProtectionFromInputPDF(String API_KEY, String DestinationFile, String uploadedFileUrl, String PDFFilePassword)
    {
        Map<string, object> parameters = new Map<string, object>();
        parameters.put('name', DestinationFile);
        parameters.put('url', uploadedFileUrl);
        parameters.put('password', PDFFilePassword);

        string jsonPayload = Json.serialize(parameters);
        String url = 'https://api.pdf.co/v1/pdf/security/remove';
        
        HttpRequest req = new HttpRequest();
        req.setHeader('x-api-key', API_KEY);
        req.setHeader('Content-Type', 'application/json');
        req.setEndpoint(url);
        req.setMethod('POST');
        req.setTimeout(60000);
        req.setBody(jsonPayload);
        Http http = new Http();
        HTTPResponse res = http.send(req);
        if(res.getStatusCode() == 200) 
        {
            System.Debug(res);
            Map<String, Object> deserializedBody =  (Map<String, Object>)JSON.deserializeUntyped(res.getBody());
            Boolean isError = Boolean.ValueOf(deserializedBody.get('error'));
            if(isError == false)
            {
                String resultFileUrl = String.ValueOf(deserializedBody.get('url'));
                downloadPDFAndStore(resultFileUrl, DestinationFile);
            }
        }
        else
        {
            System.debug('Error Response ' + res.getBody());
            System.Debug(' Status ' + res.getStatus());
            System.Debug(' Status Code' + res.getStatusCode());
            System.Debug(' Response String' + res.toString());
        }
    }
    
    @TestVisible
    private static void downloadPDFAndStore(String extFileUrl, String DestinationFile)
    {
        Http h = new Http(); 
        HttpRequest req = new HttpRequest(); 
        extFileUrl = extFileUrl.replace(' ', '%20'); 
        req.setEndpoint(extFileUrl); 
        req.setMethod('GET'); 
        req.setHeader('Content-Type', 'application/pdf');
        req.setCompressed(true); 
        req.setTimeout(60000); 
        //Now Send HTTP Request
        HttpResponse res  = h.send(req); 
        if(res.getStatusCode() == 200) 
        {
            blob fileContent = res.getBodyAsBlob();
            ContentVersion conVer = new ContentVersion();
            conVer.ContentLocation = 'S'; // to use S specify this document is in Salesforce, to use E for external files
            conVer.PathOnClient = DestinationFile + '.pdf'; // The files name, extension is very important here which will help the file in preview.
            conVer.Title = DestinationFile; // Display name of the files
            conVer.VersionData = fileContent;
            insert conVer;
            System.Debug('Success');
        }
        else
        {
            System.debug('Error Response ' + res.getBody());
            System.Debug(' Status ' + res.getStatus());
            System.Debug(' Status Code' + res.getStatusCode());
            System.Debug(' Response String' + res.toString());
        }
    }
}

RemoveProtectionFromPDFTest.cls

@istest
public class RemoveProtectionFromPDFTest {
    
    @TestSetup
    static void makeData(){
        ContentVersion conVer = new ContentVersion();
        conVer.ContentLocation = 'S'; // to use S specify this document is in Salesforce, to use E for external files
        conVer.PathOnClient = 'DestinationFile.pdf'; // The files name, extension is very important here which will help the file in preview.
        conVer.Title = 'Sample'; // Display name of the files
        conVer.VersionData = Blob.ValueOf('fileContent');
        insert conVer;
    }
    
    private  testmethod static void teststartProcessing()
    {
        Test.setMock(HttpCalloutMock.class, new RemoveProtectionFromPDFTest.RemoveProtectionFromPDFMock());
        RemoveProtectionFromPDF dc = new RemoveProtectionFromPDF();      
        Test.startTest();
        dc.startProcessing();
        Test.stopTest();
        List cv = [select Id from ContentVersion];
        System.assertEquals(2, cv.size());
    }
    
    private  testmethod static void testuploadFile()
    {
        Test.setMock(HttpCalloutMock.class, new RemoveProtectionFromPDFTest.RemoveProtectionFromPDFErrorMock());
        Test.startTest();
        Boolean result = RemoveProtectionFromPDF.uploadFile('abc', 'https://www.google.com', Blob.ValueOf('fileContent'));
        Test.stopTest();
        System.assertEquals(false, result);
    }
    
    private  testmethod static void teststartProcessingError()
    {
        RemoveProtectionFromPDF dc = new RemoveProtectionFromPDF();      
        Test.startTest();
        dc.startProcessing();
        Test.stopTest();
        List cv = [select Id from ContentVersion];
        System.assertEquals(1, cv.size());
    }
    
    public class RemoveProtectionFromPDFMock implements HttpCalloutMock {
        public HTTPResponse respond(HTTPRequest req) {
            HttpResponse res = new HttpResponse();
            String testBody = '{"presignedUrl":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=900&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZJDPLX6D7EHVCKA/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host&X-Amz-Signature=8650913644b6425ba8d52b78634698e5fc8970157d971a96f0279a64f4ba87fc","url":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=3600&x-amz-security-token=FwoGZXIvYXdzEGgaDA9KaTOXRjkCdCqSTCKBAW9tReCLk1fVTZBH9exl9VIbP8Gfp1pE9hg6et94IBpNamOaBJ6%2B9Vsa5zxfiddlgA%2BxQ4tpd9gprFAxMzjN7UtjU%2B2gf%2FKbUKc2lfV18D2wXKd1FEhC6kkGJVL5UaoFONG%2Fw2jXfLxe3nCfquMEDo12XzcqIQtNFWXjKPWBkQEvmii4tfTyBTIot4Na%2BAUqkLshH0R7HVKlEBV8btqa0ctBjwzwpWkoU%2BF%2BCtnm8Lm4Eg%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIA4NRRSZPHEGHTOA4W/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host;x-amz-security-token&X-Amz-Signature=243419ac4a9a315eebc2db72df0817de6a261a684482bbc897f0e7bb5d202bb9","error":false,"status":200,"name":"test.pdf","remainingCredits":98145}';
            res.setHeader('Content-Type', 'application/json');
            res.setBody(testBody);
            res.setStatusCode(200);
            return res;
        }
    }
    
    public class RemoveProtectionFromPDFErrorMock implements HttpCalloutMock {
        public HTTPResponse respond(HTTPRequest req) {
            HttpResponse res = new HttpResponse();
            String testBody = '{"presignedUrl":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=900&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZJDPLX6D7EHVCKA/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host&X-Amz-Signature=8650913644b6425ba8d52b78634698e5fc8970157d971a96f0279a64f4ba87fc","url":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=3600&x-amz-security-token=FwoGZXIvYXdzEGgaDA9KaTOXRjkCdCqSTCKBAW9tReCLk1fVTZBH9exl9VIbP8Gfp1pE9hg6et94IBpNamOaBJ6%2B9Vsa5zxfiddlgA%2BxQ4tpd9gprFAxMzjN7UtjU%2B2gf%2FKbUKc2lfV18D2wXKd1FEhC6kkGJVL5UaoFONG%2Fw2jXfLxe3nCfquMEDo12XzcqIQtNFWXjKPWBkQEvmii4tfTyBTIot4Na%2BAUqkLshH0R7HVKlEBV8btqa0ctBjwzwpWkoU%2BF%2BCtnm8Lm4Eg%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIA4NRRSZPHEGHTOA4W/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host;x-amz-security-token&X-Amz-Signature=243419ac4a9a315eebc2db72df0817de6a261a684482bbc897f0e7bb5d202bb9","error":false,"status":200,"name":"test.pdf","remainingCredits":98145}';
            res.setHeader('Content-Type', 'application/json');
            res.setBody(testBody);
            res.setStatusCode(201);
            return res;
        }
    }
}