Add the power of electronic signatures in your applications with e-Signature APIs. Digitally sign Microsoft Word, Excel, PowerPoint and PDF documents. GroupDocs.Signature for .NET allows developers to write applications with the ability to significantly sign electronic docs of various file formats. This e-signing API permits the users to add different types of signatures like text, image or digital signatures on electronic documents. The quite captivating fact about the API is, its UI less and independent calls can be made.

Using .NET digital signature API, users can easily sign their password protected personal or business documents. e-Sinature API permits users to add eSignatures with its own required manageable properties such as dimension, alignment, and protection. Moreover, API can be utilized for Text and Digital signature verifications.

Advanced .NET Digital Signature API Features

Upload, type or draw signatures REST API solution so integrated on desktop, mobile and web Multiple supported document formats Multiple template elements formatting support Multiple signature types and properties Text verification for all document types Digital signature verifications for all types Changing output save format support Change, add or remove passwords Image manipulating effects on signature Generate text as image and apply image filters Setup signature on arbitrary pages like first, last, even, odd etc Different Image Appearance to apply transparency, borders, etc Manipulate signature margins Different measure units support like pixels, percents, millimeters Search QR-Code and Barcode Signatures for all document types Sign documents with barcode and QR-Code Obtain search, verification and signing progress Metered licensing Encode and search custom object to QR-Code Signature Custom serialization & encryption for QR Code signature embedded objects

Common Text, Image and Digital Signature Properties
Document page number
Height
Left
Sign all pages
Top
Width
TEXT only for Text and Image properties
Specific Digital Signature Properties
Digital certificate
Document page number
Horizontal alignment
Image file name
Image stream
Password
Rectangle
Signature
Vertical alignment

Only for V.I.P