How to add text and images to PDF in Salesforce using PDF.co Web API

PDF.co Web API is the Rest API that provides set of data extraction functions, tools for documents manipulation, splitting and merging of pdf files. Includes built-in OCR, images recognition, can generate and read barcodes from images, scans and pdf.

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AddImageToTheExistingPDF.cls

      
public class AddImageToTheExistingPDF { public static void addImageToPDF() { String API_KEY = '*****************************************'; string SourceFileUrl = 'https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/sample.pdf'; string Pages = ''; string Password = ''; String DestinationFile = 'result'; string Type1 = 'image'; Integer X = 400; Integer Y = 600; Integer Width1 = 119; Integer Height1 = 32; String ImageUrl = 'https://bytescout-com.s3.amazonaws.com/files/demo-files/cloud-api/pdf-edit/logo.png'; Map<string, Object> parameters = new Map<string, Object>(); parameters.put('name', DestinationFile); parameters.put('password', Password); parameters.put('pages', Pages); parameters.put('url', SourceFileUrl); parameters.put('type', Type1); parameters.put('x', X); parameters.put('y', Y); parameters.put('width', Width1); parameters.put('height', Height1); parameters.put('urlimage', ImageUrl); string jsonPayload = Json.serialize(parameters); try { string url = 'https://api.pdf.co/v1/pdf/edit/add'; HttpRequest req = new HttpRequest(); req.setBody(jsonPayload); req.setHeader('x-api-key', API_KEY); req.setHeader('Content-Type', 'application/json'); req.setEndpoint(url); req.setMethod('POST'); 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()); String urlVal = (String)deserializedBody.get('url'); downloadPDFAndStore(urlVal, DestinationFile); } else { System.debug('Success Response ' + res.getBody()); System.Debug(' Status ' + res.getStatus()); System.Debug(' Status Code' + res.getStatusCode()); System.Debug(' Status String' + res.toString()); } } catch(Exception ex) { String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString(); System.Debug(errorBody); } } @TestVisible private static void downloadPDFAndStore(String extFileUrl, String DestinationFile) { try { 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('Success Response ' + res.getBody()); System.Debug(' Status ' + res.getStatus()); System.Debug(' Status Code' + res.getStatusCode()); System.Debug(' Status String' + res.toString()); } } catch(Exception ex) { String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString(); System.Debug(errorBody); } } }

AddImageToTheExistingPDFTest.cls

      
@isTest public class AddImageToTheExistingPDFTest { private testmethod static void testaddImageToPDF() { Test.setMock(HttpCalloutMock.class, new AddImageToTheExistingPDFTest.DocumentCreationMock()); AddImageToTheExistingPDF.addImageToPDF(); List<ContentVersion> cv = [select Id from ContentVersion]; System.assertEquals(1, cv.size()); } private testmethod static void testFetchDataAndCreatePDFException() { AddImageToTheExistingPDF.addImageToPDF(); List<ContentVersion> cv = [select Id from ContentVersion]; System.assertEquals(0, cv.size()); } private testmethod static void testdownloadPDFAndStoreException() { AddImageToTheExistingPDF.downloadPDFAndStore(null, null); List<ContentVersion> cv = [select Id from ContentVersion]; System.assertEquals(0, cv.size()); } public class DocumentCreationMock implements HttpCalloutMock { public HTTPResponse respond(HTTPRequest req) { HttpResponse res = new HttpResponse(); String testBody = '{"hash":"e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855","url":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c336bfcef1a473d98492bda25d8da03/newDocument.pdf?X-Amz-Expires=3600&x-amz-security-token=FwoGZXIvYXdzEO7%2F%2F%2F%2F%2F%2F%2F%2F%2F%2FwEaDHWK1dY4d4lOgsheliKBATwE%2FZewASPTEnPxTn%2BOdYhP4h3gljAJfqbRvQptDX7wdWLmrBS7Tg4qTU6pAbxIdXChGPjBWpSbtiADJKmqkmyhkUmE8GSM1%2FGtJO6bga2pgzvFLXmzxjTf3%2BFNqwYOvbyApIZdVLoPpEKY6PlCflQtLTd30dhelm6xpB8pitbdhSjdz8KCBjIobVy%2Fjwybwp6OQgB%2FT6QkIo2dU07gtFREdn5jhRyvnS5lkccweBV1%2Bw%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIA4NRRSZPHMV5P3JOS/20210316/us-west-2/s3/aws4_request&X-Amz-Date=20210316T124309Z&X-Amz-SignedHeaders=host;x-amz-security-token&X-Amz-Signature=95287bf3c007fed4c2c5aeea1ce75c846cc6c68b22aaf35175ebe41a105f54e1","pageCount":1,"error":false,"status":200,"name":"newDocument","remainingCredits":9913694,"credits":3}'; res.setHeader('Content-Type', 'application/json'); res.setBody(testBody); res.setStatusCode(200); return res; } } }

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