Imagemagic是一款创建、编辑、压缩图像的软件。可以转换 DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG等格式，并且能够轻松的对图片进行旋转，缩放等操作-ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (

DjVu documents download and display extremely quickly, and look exactly the same on all platforms. DjVu can be seen as superior alternative to PDF and Postscr ipt for digital documents, to TIFF (and PDF) for scanned documents, to JPEG for photo

PDF生成可以生成PDF文件，包括图片TIFF,JPEG,PS ,EPS等格式-Create PDF files any application with PDFCreator. And the best: PDFCreator can be used by everybody for free.