You need a quick and reliable solution to verify the authenticity of a stack of important PDF documents. Embedding barcode signatures into PDFs not only enhances security but also refines the verification processes, making document management more efficient. Node.js developers can automate this functionality and significantly boost their applications. In this guide, we will explore how to sign PDFs with barcode signatures programmatically using our Node.js Cloud SDK and enhance your application’s capabilities.
Steps to Sign PDF with Barcode Signature Using Node.js REST API
- Import and set up GroupDocs.Signature Cloud Node.js SDK
- Set up the API credentials and initialize SignApi with them
- Add the source PDF file with FileInfo
- Configure the signature options using SignBarcodeOptions
- Define the barcode signature’s size, position, and margins
- Apply additional settings with SignSettings and process the e-sign request
By leveraging the cloud-based Node.js library, you can inject PDF signing functionality into your document processing workflows. The cloud API facilitates seamless integration, allowing you to e-sign PDFs programmatically with barcode signatures. As barcodes embed encrypted data, unauthorized document alteration becomes difficult. Scannable barcodes allow efficient verification and automated data extraction, minimizing manual entry errors and thus improving accuracy.
Code to Sign PDF with Barcode Signature Using Node.js REST API
| // Step 1: Import the GroupDocs.Signature Cloud module | |
| const signature_cloud = require("groupdocs-signature-cloud"); | |
| // Step 2: Define your API credentials | |
| const MyApiKey = "your-api-key"; | |
| const MyApiSecret = "your-api-secret"; | |
| // Step 3: Initialize the SignApi with API credentials | |
| const signApi = signature_cloud.SignApi.fromKeys(MyApiKey, MyApiSecret); | |
| // Step 4: Configure the PDF document to sign from cloud storage | |
| (async () => { | |
| try { | |
| // Set up file information | |
| const fileInfo = new signature_cloud.FileInfo(); | |
| fileInfo.filePath = "SampleFiles/source.pdf"; | |
| // Define barcode signature options | |
| const signOptions = new signature_cloud.SignBarcodeOptions(); | |
| signOptions.signatureType = | |
| signature_cloud.OptionsBase.SignatureTypeEnum.Barcode; | |
| signOptions.barcodeType = 'Code128'; | |
| signOptions.text = '123456789101'; | |
| // Set signature position and size on a page | |
| signOptions.horizontalAlignment = | |
| signature_cloud.SignTextOptions.HorizontalAlignmentEnum.Right; | |
| signOptions.verticalAlignment = | |
| signature_cloud.SignTextOptions.VerticalAlignmentEnum.Top; | |
| signOptions.width = 300; // Barcode signature width | |
| signOptions.height = 100; // Barcode signature height | |
| signOptions.allPages = true; // Apply to all pages | |
| signOptions.locationMeasureType = | |
| signature_cloud.SignTextOptions.locationMeasureType.Pixels; | |
| // Define margins | |
| signOptions.margin = new signature_cloud.Padding(); | |
| signOptions.margin.all = 3; | |
| signOptions.marginMeasureType = | |
| signature_cloud.SignTextOptions.MarginMeasureTypeEnum.Pixels; | |
| // Configure signature settings | |
| const settings = new signature_cloud.SignSettings(); | |
| settings.fileInfo = fileInfo; | |
| settings.options = [signOptions]; | |
| settings.saveOptions = new signature_cloud.SaveOptions(); | |
| settings.saveOptions.outputFilePath = "signature/signed.pdf"; | |
| // Create a PDF e-signature request | |
| const request = new signature_cloud.CreateSignaturesRequest(settings); | |
| const response = await signApi.createSignatures(request); | |
| } catch (error) { | |
| console.error("Error during document signing:", error.message); | |
| } | |
| })(); |
GroupDocs.Signature Cloud Node.js REST API offers a secure, robust, and programmable solution for adding barcode signatures to PDF documents in cross-platform Node.js apps. Developers can experience impeccable document authentication features and boost their applications, providing users with automated PDF signing capabilities. The Cloud REST API simplifies the workflows and requires minimal code while reducing operational costs associated with manual handling. It gives you a broader perspective on document signing that helps you implement electronic signatures into your files and extends the versatility of your Node.js solutions.