GroupDocs.Signature 19.12.1

GroupDocs.Signature for .NET is a feature rich library which provides an ability to add stamps, barcodes and QR-codes, text, image, metadata, form field and digital signatures to documents of various formats like PDF, DOCX/DOC, PPTX/PPT, XLSX/XLS, VSDX/VSD, JPG, PNG, TIFF, HTML and many others.
Sign, create, search, verify document signatures for all popular document formats and set different signing options to suit your needs with GroupDocs.Signature for .NET API.

Features:
   * Document signatures
       - Digital - signatures based on a certificate file (supported by PDF, Spreadsheet, Words formats);
       - Barcode - adds barcode to document pages (over 60+ different types)
           * PostCodes;
           * Codabar;
           * Code128;
           * Code16K;
           * Code39;
           * Databar;
           * EAN;
           * ISBN;
           * VIN and others.
       - QR-code - adds QR-code to document pages with ability to embed encrypted data into QR-code
           * Aztec;
           * DataMatrix;
           * QR;
           * GS1DataMatrix;
           * GS1QR.
       - Metadata - inserts any data types as hidden document content in a document metadata in a dictionary manner with unique key;
       - Text - different type of text object like text stamp, labels, annotations, watermarks ;
       - Image - places an image to document page;
           * Text as image;
           * Image - various graphics, figures and polylines.
       - Stamp - adds various kind of stamps to document as different stamp shapes circle or rectangle;
       - Form Field - fills document form fields with provided data (for PDF documents only).
   * Search - returns a list of document signatures
       - Digital signatures for Pdf, Spreadsheet, Word documents;
       - Barcodes in all supported document types;
       - QR-codes in all supported document types with ability to decrypt embedded data into any object
       - Metadata signatures in all supported document types;
       - Form-field signatures in all supported document types.
   * Verify - checks that document contains signatures that meet the specified criteria. Supported signature types:
       - Text;
       - Digital;
       - Barcode;
       - QR-code.
   * Update - updates signatures in the documents. Supported signature types:
       - Text;
       - Image;
       - Barcode;
       - QR-code.
   * Delete - removes signatures from the documents. Supported signature types:
       - Text;
       - Image;
       - Barcode;
       - QR-code.
   * Styling - wide settings range for visualization effects such as text and image opacity, colors, fonts, rotation and other effects;
   * Document basic information - basic metadata for provided source document (size, page count, file type, created/modified dates etc.).

Supported document formats:
   * Portable Document Formats - PDF (PDF/A-1a, PDF/A-1b, PDF/A-2a)
   * Microsoft Word documents - DOC, DOCX, DOCM, DOT, DOTX, DOTM, RTF
   * Microsoft Excel spreadsheets - XLS, XLSX, XLSM, XLSB,
   * Microsoft PowerPoint presentations - PPT, PPTX, PPS, PPSX, PPTM, POTX, POTM, PPSM;
   * Open Document formats - ODT, OTT, ODS, OTS, ODP, OTP;
   * Image - TIFF, TIF, JPG, JPEG, PNG, GIF, BMP, ICO, JP2, J2C, J2K, JPF, JPX, JPM, WMF, EMF, WEBP, PSD;

For more details on the GroupDocs.Signature for .NET API, please visit product website at:
https://products.groupdocs.com/signature/net

Note: GroupDocs.Signature for .NET will run in evaluation mode. In order to test full features of the product, please request a free 30-day temporary license.