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

What is PDF.co Web API? It is the flexible Web API that includes full set of functions from e-signature requests to data extraction, OCR, images recognition, pdf splitting and pdf splitting. Can also generate barcodes and read barcodes from images, scans and pdf.

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Program.cls

      
public class Program { public static void fetchDataAndCreatePDF() { 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 Type = 'annotation'; Integer X = 400; Integer Y = 600; string Text = 'APPROVED'; string FontName = 'Times New Roman'; Decimal FontSize = 24; string FontColor = 'FF0000'; 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', Type); parameters.put('x', X); parameters.put('y', Y); parameters.put('text', Text); parameters.put('fontname', FontName); parameters.put('size', FontSize); parameters.put('color', FontColor); 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); } } }

ProgramTest.cls

      
@isTest public class ProgramTest { private testmethod static void testFetchDataAndCreatePDF() { Test.setMock(HttpCalloutMock.class, new ProgramTest.DocumentCreationMock()); Program.fetchDataAndCreatePDF(); List<ContentVersion> cv = [select Id from ContentVersion]; System.assertEquals(1, cv.size()); } private testmethod static void testFetchDataAndCreatePDFException() { Program.fetchDataAndCreatePDF(); List<ContentVersion> cv = [select Id from ContentVersion]; System.assertEquals(0, cv.size()); } private testmethod static void testdownloadPDFAndStoreException() { Program.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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