ImageMagick® is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (over 100) including DPX, EXR, GIF, JPEG, JPEG-2000, PDF, PhotoCD, PNG, Postscript, SVG, and TIFF. Use ImageMagick to translate, flip, mirror, rotate, scale, shear and transform images, adjust image colors, apply various special effects, or draw text, lines, polygons, ellipses and Bézier curves.

ImageMagick is free software delivered as a ready-to-run binary distribution or as source code that you may freely use, copy, modify, and distribute. Its license is compatible with the GPL. It runs on all major operating systems.
Features:
* Format conversion: convert an image from one format to another (e.g. PNG to JPEG)
*Transform: resize, rotate, crop, flip or trim an image
*Transparency: render portions of an image invisible
*Draw: add shapes or text to an image
*Decorate: add a border or frame to an image
*Special effects: blur, sharpen, threshold, or tint an image
*Animation: create a GIF animation sequence from a group of images
*Text & comments: insert descriptive or artistic text in an image
*Image identification: describe the format and properties of an image
*Composite: overlap one image over another

Download Here