Sign PNG File in Java & View in HTML
Sign & secure PNG files in Java applications using popular electronic signature types such as text, image, metadata, QR-Code, stamp and form field. Programmatically generate, update, delete, verify and search digital signatures in PNG documents, images and various other file formats without Adobe Reader installed.
DownloadHow to Add Image Signatures to PNG
Using Conholdate.Total for Java - insert custom image as an electronic signature to a PNG 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
- Set options to view document as HTML
- Instantiate Viewer with output file
APIs Download & Installation Instructions
You require GroupDocs.Signature & GroupDocs.Viewer namespaces to digitally sign documents in Java and view as HTML, image or in a PDF format. Explore other Java APIs for Office documents as offered by Conholdate.Total.
Get the respective assembly files from the downloads or fetch the whole package from Maven to add ‘Conholdate.Total` directly in your workspace.
Add Text Signatures to PNG in Java
Add customized text signature to a PNG 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
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.
What is PNG file format?
PNG, short for Portable Network Graphics, stands as a raster graphics file format renowned for its lossless data compression and its suitability for displaying images on the web. It has gained significant popularity among graphic designers and photographers who seek to store and showcase high-quality images. One of the distinctive features of PNG files is their support for transparency, setting them apart from JPEG files that cannot contain transparent areas.
The PNG file format provides several advantages that contribute to its appeal. Firstly, it supports 16-bit color, enabling the preservation of more accurate colors during image editing processes. This feature proves valuable for professionals working with intricate color details. Additionally, PNG supports gamma correction, ensuring that images display correctly across various systems. This capability helps to maintain consistent visual quality across different devices and platforms.
Furthermore, PNG employs lossless data compression, allowing for efficient reduction of file size without compromising image quality. This compression technique facilitates faster download times and improved web page loading performance. The smaller file sizes make PNG files more convenient to store, transfer, and share, making them an ideal choice for web-based applications.
PNG files have gained widespread support across major web browsers and operating systems, further contributing to their popularity. This compatibility ensures that PNG images can be reliably viewed and displayed across different platforms and devices, enhancing accessibility and user experience. Moreover, PNG is widely supported by various image editing and drawing software programs, including industry-standard applications like Adobe Photoshop. This compatibility allows professionals to work seamlessly with PNG files, leveraging advanced editing capabilities to achieve their desired outcomes.
LearnPopular Document Signature Options with Java
(Portable Document Format)
(Word Processing Files)
(Spreadsheet Files)
(Microsoft Word Binary Format)
(Office 2007+ Word Document)
(Microsoft Word 2007 Marco File)
(Microsoft Word Template Files)
(Microsoft Word 2007+ Template File)
(Microsoft Word Template File )
(Microsoft Excel Spreadsheet (Legacy))
(Excel Binary Workbook)
(Macro-enabled Spreadsheet)
(Open XML Workbook)
(Excel Macro-Enabled Template)
(Excel Template)
(Microsoft PowerPoint 97-2003)
(Open XML presentation Format)
(PowerPoint Slide Show)
(PowerPoint Slide Show)
(Microsoft PowerPoint Template Presentation)
(Microsoft PowerPoint Template File)
(Bitmap Image File)
(Joint Photographic Expert Group Image)
(Graphical Interchange Format)
(Portable Network Graphic)
(Raster Web Image Format)
(Tagged Image File Format)
(Windows Metafile)
(Photoshop Document)
(Scalar Vector Graphics)
(OpenDocument Presentation Format)
(OpenDocument Standard Format)
(OpenDocument Spreadsheet)
(OpenDocument Spreadsheet Template)
(OpenDocument Text File Format)
(OpenDocument Standard Format)
