JSPM – @groupdocs/groupdocs.signature@24.12.0

Package Exports

@groupdocs/groupdocs.signature
@groupdocs/groupdocs.signature/index.js

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Readme

GroupDocs.Signature for Node.js via Java lets your app end-users sign the electronic documents from a wide range of file formats. Supports several types of e-signing methods.

Node.js Signature API Features

Document Signature Processing Features
Create and add signatures to documents of various file formats.
Specify visual attributes of signatures, such as color, font, margins, etc.
Search and fetch a list of signatures from a document.
Determine if the document contains signatures meeting specified criteria.
Extract basic information about the document.
Generate image representation of document pages for preview.
Distinguish created signatures from the actual document.
Put encrypted text into the QR-code signature or embed custom data objects.

Supported File Formats

The following section lists the supported file formats for the barcode, image, QR-code, stamp, and text signature types: Microsoft Word: DOC, DOCM, DOCX, DOT, DOTM, DOTX Microsoft Excel: XLSX, XLS, XLSB, XLSM, XLTX, XLTM Microsoft PowerPoint: PPTX, PPTM, PPT, PPSX, PPSM, PPS, POTX, POTM OpenOffice: ODT, OTT, ODS, OTS, ODP, OTP Image: BMP, DJVU, GIF, JPG, JPEG, PNG, SVG, TIF, TIFF, WEBP CorelDraw: CDR, CMX Photoshop: PSD Metafile: WMF Portable: PDF

Digital Signature Supported Formats

Microsoft Word: DOC, DOCM, DOCX, DOT, DOTM, DOTX Microsoft Excel: XLSX, XLS, XLSB, XLSM, XLTX, XLTM Microsoft PowerPoint: PPTX, PPTM OpenOffice: ODS, OTS Portable: PDF

Supported Signature Types

Text stamps
Text labels
Text as an image signature
Image signature
Digital signature
Barcode signature
QR-code signature
Metadata signature
Form-field signature

Getting Started with GroupDocs.Signature for Node.js via Java

Installation

From the command line:

npm i @groupdocs/groupdocs.signature

Sign a PDF File using Node.js

  const signature = new groupdocs.signature.Signature(pdfFilePath);

  // Create QR code sign options
  const options = new groupdocs.signature.QrCodeSignOptions('JohnSmith');

  // Setup QR code encoding type
  options.setEncodeType(groupdocs.signature.QrCodeTypes.QR);
  
  // Set signature position
  options.setLeft(100);
  options.setTop(100);

  // Sign document to file
  signature.sign(outputFilePath, options);

Search for Digital Signatures in Excel XLSX using Node.js

const signature = new groupdocs.signature.Signature('spreadsheet.xlsx');
const options = new groupdocs.signature.DigitalSearchOptions();

// Search for signatures in the document
const signatures = signature.search(options).toArray();

console.log('\nSource document contains the following signatures.');
for (const digitalSignature of signatures) {
  console.log(`Digital signature found from ${digitalSignature.signTime} with validation flag ${digitalSignature.isValid}. Certificate SN ${digitalSignature.certificate.type}`);
}