GdPicture Imaging SDK is an image processing toolkit to acquire, create, edit, and compose bitmap images. It can read, convert, print and write images in a large variety of formats.
GdPicture Imaging SDK can be used from any 32 or 64 bit Windows development environment that can call ActiveX components, including Visual Basic, Visual C++, Delphi, Visual FoxPro, PowerBuilder, PHP, ASP, IIS, MS Word, Access, Windev, Excel, .NET environment like C#, VB.NET and many others.
GdPicture Imaging SDK works with Microsoft Windows platforms: 98, NT4, ME, 2000, XP, 2003, Vista...

* Royalty free.
* Easy to use API.
* Frequents updates.
* Many sample codes.
* Forum support.

Few specifications:

- Support for tiff, tif, jpeg, jpg, png, ico, wmf, gif, exif, bmp, dib, fax, emf and PDF file formats.
- Support lzw, ccitt3, ccitt4, rle and Jpeg compression.
- Support for 1bit, 4bits, 8bits, 16bits, 24bits, 32bits, 48bits and 64bits pallets color.
- Multipage Tiff reading and writing.
- Drawing barcode (25i, EAN13, 3 of 9)
- Image enhancement functions.
- Import / Export from clipboard.
- TWAIN scanning (scanner and webcam) with Automatic Document Feeder control (ADF) and Auto-Scan.
- Pallets colors conversion.
- Auto Border removal.
- Advanced rotations.
- Watermark.
- Advanced Text processing.
- Make Thumbnails.
- Skew and de-skew image.
- Obtain specific color components of an image.
- Read / Write EXIF, Thumbnail, GPS Tags...
- Print image.
- Merge and combine Images.
- Resizing with 8 diferent interpolation modes.
- Drawing lines, ellips, round, bezier, curves...
- Change brightness, saturation, contrast, gamma.
- Lot of filters and effects (emboss, blur, engrave, smooth, negative, red eyes correction...).
- Personalized filters with black and white images.
- Area processing.
- Capture the contents of any window or section of any window.
- Color anti-aliasing and smoothing for zoomed images.