sK1 is an open source cross-platform vector graphics editor like CorelDRAW, Adobe Illustrator, or Freehand. The major feature of sK1 is a professional precise printing and prepress ready PDF output.

sK1 2.0 is licensed under GPL v3. So you may use this application as for personal or commercial purposes without any fees.

sK1 2.0 features

Application supports basic vector graphics primitives: rectangles, rounded rectangles, ellipses, pies, sectors, chords, polygons, Bézier curves, text and bitmaps.

The objects may be structured on pages, layers and just in selectable groups/containers. Pages within a document can be of different sizes.

Bézier curves are fundamental rendering units. All the primitives can be converted into curves. We use Cairo library to render these curves on the screen.

Thanks to cairo we have cross-platform unified antialiased rendering, similar to PostScript/PDF definitions.

Like PS/PDF definitions, sK1 2.0 provides solid fill, gradient fill and pattern fill for graphics primitives. Also the objects can be outlined by solid stroke

Like for PDF objects, alphachannel is available for solid fill, gradient stops and for stroke color. Application supports RGB, CMYK and Grayscale colorspaces. SPOT colors are also supported.

Note: PANTONE® colors are just a special case of SPOT colors.

Inside sK1 2.0 all the color values and raster images are under color management. We use LittleCMS library for these purposes.

Despite of built-in profiles, end users can use own color profiles to customize color management engine. Printer emulation on screen option is also available.

sK1 2.0 text engine has a full-function rendering of multi-language text and cross-platform support because it's powered by Pango library

Thanks to this library, application handles text layout for particular combinations of script and font backend. Modules for Hebrew, Arabic, Hangul, Thai, and a number of Indic scripts are supported.

UniConvertor 2.0 is a core package of sK1 2.0 application. UC2 provides extended import/export functionality of different vector graphics, raster image and color palette file formats. Thus sK1 2.0 is connected to existent open source and commercial graphics software like Inkscape, Gimp, CorelDRAW, Adobe Illustrator, Xara Designer etc.

sK1 2.0 user interface is built on wxWidgets toolkit. This toolkit allows easy porting application on MS Windows and macOS without rewriting tonnes of GUI code.