Open Source Java Image Converters

libjpeg-turbo is a JPEG image codec that uses SIMD instructions (MMX, SSE2, NEON, AltiVec) to accelerate baseline JPEG compression and decompression on x86, x86-64, ARM, and PowerPC systems. On such systems, libjpeg-turbo is generally 2-6x as fast as libjpeg, all else being equal. On other types of systems, libjpeg-turbo can still outperform libjpeg by a significant amount, by virtue of its highly-optimized Huffman coding routines. In many cases, the performance of libjpeg-turbo rivals that of proprietary high-speed JPEG codecs. libjpeg-turbo implements both the traditional libjpeg API as well as the less powerful but more straightforward TurboJPEG API. libjpeg-turbo also features colorspace extensions that allow it to compress from/decompress to 32-bit and big-endian pixel buffers (RGBX, XBGR, etc.), as well as a full-featured Java interface.

FreeImage is a library project for developers who would like to support popular graphics image formats (PNG, JPEG, TIFF, BMP and others). Some highlights are: extremely simple in use, not limited to the local PC (unique FreeImageIO) and Plugin driven!

An easy to use Java program that allows you to digitize data points off of scanned plots, scaled drawings, or orthographic photographs. Includes an automatic digitization feature that can automatically digitize many types of functional data.

Provides optical character recognition (OCR) solutions for Vietnamese language.

A Java JNA wrapper for Tesseract OCR API

BRL-CAD is a powerful cross-platform constructive solid geometry solid modeling system that includes an interactive geometry editor, ray-tracing for rendering & geometric analyses, network distributed framebuffer support, image & signal-processing tools.

Reads and writes archives used in many popular games. Great for mod development and game translations. Supports over 5200 games, with more games added through small plugins. Also shows file previews and converts them to different formats.

Kabeja is a java library for parsing DXF and converting to SVG (dxf2svg). The library supports the SAX-api and can integrated into other applications (Cocoon,Batik). Tools for converting svg to jpeg, tiff, png and pdf are included .

Shutter Encoder is an video, audio and image converter based on FFmpeg and other great tools. It has been designed by video editors in order to be as accessible and efficient as possible. It's a swiss knife tool for any video editor. Link to website & downloads : https://www.shutterencoder.com - Without conversion: Cut without re-encoding, Replace audio, Rewrap, Conform, Merge, Extract, Subtitling, Video inserts - Sound conversions: WAV, AIFF, FLAC, ALAC, MP3, AAC, AC3, OPUS, OGG - Editing codecs: DNxHD, DNxHR, Apple ProRes, QT Animation, GoPro CineForm, Uncompressed YUV - Output codecs: H.264, H.265, VP8, VP9, AV1, OGV - Broadcast codecs: XDCAM HD422, AVC-Intra 100, XAVC, HAP - Old codecs: DV PAL, MJPEG, Xvid, WMV, MPEG - Archiving codec: FFV1 - Images creation: JPEG, Image - Burn & Rip: DVD, Blu-ray, DVD RIP - Analysis: Loudness & True Peak, Audio normalization, Cut detection, Black detection, Media, VMAF - Download: Web video

Retro Computer Image Library decodes Amiga, Amstrad CPC, Apple II, Atari 8-bit, Atari Portfolio, Atari ST/TT/Falcon, BBC Micro, Commodore 64, Commodore 16/116/Plus4, Commodore 128, Electronika BK, FM Towns, HP 48, Macintosh 128K, MSX, NEC PC-80/88/98, Oric, SAM Coupe, Sharp X68000, Tandy 1000, Timex 2048, TRS-80, TRS-80 Color Computer, ZX81 and ZX Spectrum picture formats. The project contains a simple viewer, plug-ins for general-purpose image viewers and editors, and an everything-to-png converter.

A small utility that converts ascii-art diagrams to nice-looking bitmap diagrams automatically.

A free open source Java application created to help you apply watermarks to your pictures in order to protect them from unauthorized distribution. Different font, color, size and transparency texts or images can be added as a watermark. Batch processing is also provided.

A Java based conversion tool that creates a PDF document with a page for each image file. The image can be rotated to best fit the page. Other options allow for the page to be rotated to best fit the image, landscape or portrait, no auto rotation.

Photoshop and GIMP Extensions Installer installs + 180 plug-ins, pattern, gradients, curves easy for Photoshop + GIMP with 1 click. Use the Photoshop and GIMP Extensions Installer to choose one or more.... - plugins - brushes - scripts - patterns - gradients ... to install them easily and full-automatically. 1. Choose the version of Photoshop / GIMP 2. Choose a plugin 3. Click on install ++ SYSTEM-Checkup with custom installation folder selection ++ IMPORTER for all kind of extensions [for GIMP + Photoshop] Get PGEI Pro at https://pgei.de/pgei-pro/ Use the new filters to speed up your search. Requirement is Java and the usage of Admin-Rights. Click on here to learn more https://pgei.de/contact/

Drawj2d creates technical line drawings using a descriptive language. It writes pdf, svg, eps, emf and dxf vector graphics or png images. It runs on all platforms that run Java. It is inspired by Asymptote but with a tcl-like syntax and 2D only.

The library im4java provides a pure-java interface to ImageMagick, GraphicsMagick and other popular commandline tools like jpegtran, ufraw, dcraw, exiftool. The im4java-engine permits the addition of new tools in a very short time (less than an hour)

cbrTekStraktor is an application to automatically extract text from the text bubbles or speech balloons present in comic book reader files (CBR). Its prime goal is to perform analysis on the texts of comic books. cbrTekStraktor can however also be used for scanlation or similar purposes. The application also enables to manually define text areas in CBR files. The application comprises a simple graphical editor for further processing the extracted text. The text extraction is achieved by a combination of statistical and graphical processing operations. It is based on the following 3 major algorithms - Binarization of color images (Niblak and other methods) - Connected components - K-Means clustering Apache Tesseract is used to perform Optical Character Recognition on the extracted text. A subsequent version of the application will integrate with translation software in order to provide automated translation of comic book texts and re-inserion of translated texts

The "Java Mass JPEG Resizer Tool" has following Features Resize all JPEG Images of a Directory, Create Webgalleries, Pack it to an ZIP File for E-Mail Attachments. The Tool is available in German and English.

Composed of a Java steganographic library and GUI to use steganography. Primarily intended for research communities on security and steganography to implement new dissimulation and steganalysis algorithms. More information at www.hidereveal.org

mcf2pdf converts .mcf files of the "My CEWE Photobook" software (see http://www.cewe-photobook.co.uk/ or http://www.cewe-fotobuch.de (german)) to PDF files, so you can better preview the results and even send them to others by e-mail. This project has moved to GitHub. Please visit https://github.com/albrechtf/mcf2pdf/releases for download of latest version.

Delineate is a tool for converting raster images to SVG (Scalable Vector Graphics) using AutoTrace or potrace. It loads images using JIU and displays results using Batik. Input formats are JPEG, PNG, GIF, BMP, TIFF, PNM, PBM, PGM, PPM, IFF, PCD, PSD, RAS

Reads and writes images used in many popular games. Great for mod development. Supports over 50 games, with more games added through small plugins. Allows batch conversion of images.

The goal of this project is to create an application which can convert animated gif files into animated apng files.

An implementation of the VP8 image/video codec in pure Java.

A Java library for loading, editing, analyzing and saving pixel image files. Java 1.1 or higher is required. Various file formats are supported, demo applications for the command line and the AWT GUI toolkit are provided.