Thumbnailator

Thumbnailator is a Java library for creating thumbnails. Using Thumbnailator simplifies the process of resizing images and adding watermarks or logos by providing a fluent interface which reduces the amount of code required to achieve results.

Thumbnailator is free, open-source software available under the MIT license.

The Thumbnailator project is currently hosted at Google Project Hosting.

Features

• Create high-quality thumbnails from existing images.
• Option to embed a watermark (such as a logo) in the thumbnails.
• Resize existing images to desired dimensions.
• Transparency of the watermark is adjustable from tranparent (0%) to opaque (100%).
• Multiple quality modes for thumbnail generation.
• Supports rotation of thumbnail.
• Preserves the aspect ratio of resulting thumbnail, if desired.
• Simply to use fluent interface which makes generating thumbnails simple.

Read more about the features of Thumbnailator >

See a comparison of using and not using Thumbnailator >

How to Use Thumbnailator

Thumbnailator is based around a fluent interface which can be used to simply generate thumbnail images:

BufferedImage originalImage = ImageIO.read(new File("original.jpg"));
BufferedImage watermarkImage = ImageIO.read(new File("watermark.png"));

BufferedImage thumbnail = Thumbnails.of(originalImage)
        .size(200, 200)
        .watermark(Positions.BOTTOM_RIGHT, watermarkImage, 0.5f)
        .asBufferedImage();

How to Use Thumbnailator contains the API documentation (Javadoc), the description on the overall design, and examples on using Thumbnailator to generate thumbnail images...

Read more about using Thumbnailator >

Download

Thumbnailator is available as free, open-source software under the MIT license. The source code for Thumbnailator is available for download.

Download Thumbnailator >

Previous Releases

Originally, Thumbnailator was designed to be an application which generates a picture gallery using images taken from a digital camera. Later, it turned into a more general-purpose thumbnail generation API.

Find out more about previous releases of Thumbnailator >

Requirements

Thumbnailator requires Java(TM) 2 Platform, Standard Edition, Runtime Environment v. 1.5 or later.

The newest version of the Java(TM) Runtime Environment is available from Oracle.