Digitally Sign EMF Documents in Java (Code Example)

Add Digital Signatures to EMF in Java

Add custom digital signatures to EMF documents in Java based on PFX certificate files. The all-in-one electronic signature API easily integrates with your Java application to give you a personalized document signing experience using a few lines of code.

Instantiate Signature with (EMF) as input document
Instantiate DigitalSignOptions object with certificate & password details
Call sign method of Signature class and pass DigitalSignOptions to it

Work with EMF Signature API

You require GroupDocs.Signature namespace to digitally sign documents in Java & J2SE applications. Use signature manipulation features to customize sign, search and signature verification processes, manage eSignature colors, styling and overall appearance.

Get the respective assembly files from downloads or fetch the whole package from Maven to add ‘Conholdate.Total` directly in your workspace.

Add Text Signatures to EMF in Java

Add customized text signature to a EMF document in Java using advanced text settings such as font color, size, name, text alignment and border adjustment.

Create a new instance of Signature class and pass input document
Instantiate the TextSignOptions object and specify text signature options
Call sign method of Signature class instance and pass TextSignOptions to it

eSign Remotely Located Documents

The document eSign API enables you to load & display remotely located documents from various cloud document storage sources such as stream, local disk, URL, FTP, Amazon S3, and Azure Blob storage. Using document information extraction feature - fetch the basic information about the source document file (EMF) along with extracting other valuable document information such as file type, file size, pages count, page height and width etc.

Add Image Signatures to EMF in Java

Using Conholdate.Total for Java - insert custom image as an electronic signature to a EMF document in Java. Add company logo, stamp icon or name using different colors and text effects.

Create a new instance of Signature class and pass input document to it
Instantiate the ImageSignOptions object and specify image signature options
Call sign method of Signature class instance and pass ImageSignOptions to it

Image Representation of Document Pages

Apply digital signatures to a wide range of document formats and generate the image representation of the already signed document pages in PNG, JPG or BMP formats. You can easily preview the complete document as a whole or choose to display some specific pages based on page numbers or page ranges.

Using advanced document previewing features - easily hide digital signatures from the signed documents while generating the document preview.

What is EMF file format?

The EMF file format is a vector graphics file format developed by Microsoft to replace their earlier WMF format. It is used to store and exchange vector drawings, raster images, text, and other graphical elements in a compact and efficient way. An EMF file can be created or edited with numerous software applications, including Microsoft Word, Excel, PowerPoint, and Publisher. In contrast to other image file formats such as JPEG, EMF files are not intended for printing. They are optimized for display on electronic devices, such as computer monitors, smartphones, and tablets. EMF files are primarily used to exchange graphics with other programs and to publish web graphics. The EMF file format contains a set of commands which instruct the graphics device to draw shapes, render text, and output raster images. It also contains a device context that specifies the current state of the graphics device, such as the color and line width of the shapes being drawn, and the size and resolution of the output device. EMF files can be converted to other graphics formats, such as SVG, PDF, and TIFF, using dedicated conversion tools.

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Digitally Sign EMF in Java