@groupdocs/groupdocs.signature

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

$3

From the command line:

npm i @groupdocs/groupdocs.signature

$3

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);

$3

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}

);

}