Add Text Watermark to PNG images via Java
Build your own Java apps to watermark PNG image files using server-side APIs
Aspose.Imaging for Java
Overview
How to Watermark PNG File Using Java
A watermark is an essential tool for authors seeking maximum exposure for their work on the internet. Placing a watermark on an image serves not only to identify its source or copyright holder but also to promote its creator. This is because the signature containing the author’s name or the internet resource’s name is distributed alongside a digital copy of the image. Watermarks can take the form of text with a wide range of fonts and can be positioned at the image’s edge. When the watermark is transparent, it doesn’t disrupt viewing. However, if the author or copyright holder wishes to emphasize their name, the watermark may partially overlap the image. In order to watermark PNG image file, we’ll use Aspose.Imaging for Java API which is a feature-rich, powerful and easy to use image manipulation and conversion API for Java platform. You can download its latest version directly from Maven and install it within your Maven-based project by adding the following configurations to the pom.xml.
Repository
<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>
Dependency
<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-imaging</artifactId>
<version>version of aspose-imaging API</version>
<classifier>jdk16</classifier>
</dependency>
Steps to Add Watermark to PNG via Java
You need the aspose-imaging-version-jdk16.jar to try the following workflow in your own environment.
- Load PNG file with Image.load method
- Create instance of Graphics from the Image
- Define Font, Brush and Format for watermark text
- Draw watermark using Graphics.drawString method
- Save image to disc in PNG format
System Requirements
Aspose.Imaging for Java is supported on all major operating systems. Just make sure that you have the following prerequisites.
- JDK 1.6 or higher is installed.
Watermark PNG image - Java
About Aspose.Imaging for Java API
Aspose.Imaging API is an image processing solution to create, modify, draw or convert images (photos) within applications. It offers: cross-platform Image processing, including but not limited to conversions between various image formats (including uniform multi-page or multi-frame image processing), modifications such as drawing, working with graphic primitives, transformations (resize, crop, flip&rotate, binarization, grayscale, adjust), advanced image manipulation features (filtering, dithering, masking, deskewing), and memory optimization strategies. It’s a standalone library and does not depend on any software for image operations. One can easily add high-performance image conversion features with native APIs within projects. These are 100% private on-premise APIs and images are processed at your servers.Watermark PNG via Online App
Add watermark to PNG documents by visiting our Live Demos website The live demo has the following benefits
PNG What is PNG File Format
PNG, Portable Network Graphics, refers to a type of raster image file format that use loseless compression. This file format was created as a replacement of Graphics Interchange Format (GIF) and has no copyright limitations. However, PNG file format does not support animations. PNG file format supports loseless image compression that makes it popular among its users. With the passage of time, PNG has evolved as one of the mostly used image file format. Almost all Operating Systems have support for opening PNG files. For example, Microsoft Windows viewer has the capability to open PNG files as the OS has by default the support available as part of installation.
Read MoreOther Supported Watermarking Formats
Using Java, you can easily watermark different formats including: