e-Sign Documents via Node.js SDK

Electronically sign files & manage text, image, QR-code, stamp, digital and barcode signatures in Node.js applications with simple usage of e-signing REST API.

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Node.js SDK for Electronic Signature REST API

GroupDocs.Signature Cloud SDK for Node.js


GroupDocs.Signature Cloud SDK for Node.js is a REST oriented API for easy integration into existing Node.js ‎based eSign and digital signature programs. This signature SDK helps you speed up the development ‎by taking care of low-level details, such as request and response handling. Moreover, it provides you ‎with a handy collection of features to apply various types of signatures, such as, image signatures, ‎barcode signatures, QR-Code signatures, text-based signatures, digital and stamp signatures. This ‎customizable Node.js based signature SDK allows you to work with signatures in spreadsheets, ‎presentations, images, portable and simple files of supported formats.‎‎


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Advanced Document Signature REST API Features



Get List of Supported Document Formats


Fetch List of Supported Encode Type Names for Barcode and QR-Code


Retrieve Document Information from File or Provided URL


Apply Signature to a Document using File Name or at Specified URL


Apply Background Brush & Text Alignment to Text Signatures


Verify Text and Digital Signatures for PDF, Word and Excel Documents using File or via URL


Verify Barcode and QR-Code Signatures for all Supported Document Formats‎ using File or via URL


Search Digital Signatures in PDF Files, Spreadsheets and Word Documents‎ in File or via URL


Search Barcode and QR-Code Signatures in all Supported Document Formats‎ in File or via URL


Add & Verify Multiple Signatures to Document using File Name or Provided URL


Search Multiple Signatures in a Document using its File Name or Provided URL


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Get Document Information

GroupDocs.Signature Cloud SDK for Node.js makes it very easy to work with eSignatures. In addition to applying digital signatures you can also manipulate document properties. Following example elaborates how to retrieve document information of a DOCX file using Node.js:

Get Document Information using Node.js

// load the module
var GroupDocs = require('groupdocs-signature-cloud');
// get your appSid and appKey at https://dashboard.groupdocs.cloud (free registration is required).
// construct SignatureApi
var config = new GroupDocs.Configuration(appSid, appKey);
config.apiBaseUrl = "https://api.groupdocs.cloud";
var infoApi = GroupDocs.InfoApi.fromConfig(config);
// retrieve supported file-formats
    .then(function (response) {
        console.log("Supported file-formats:")
        response.formats.forEach(function (format) {
            console.log(format.fileFormat + " (" + format.extension + ")");
    .catch(function (error) {
        console.log("Error: " + error.message)

Set Background Brush for Stamp & Text Signatures

Using GroupDocs.Signature Cloud SDK for Node.js, you can set background brush effects for your text ‎as well as stamp signatures. Currently, the SDK supports to apply 4 different types of brushes, which ‎include, Radial Gradient Brush, Linear Gradient Brush, Textured Brush, and Solid Brush.‎

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