Googletilecutter is a free and open source image tiling software. The tiler requires ImageMagick and advpng or pngcrush for PNG compression. Tiled image size is restricted only by disk space and ImageMagick limitations.
To use Googletilecutter, one need only specify the image being tiled, the Google tile coordinates of the top-left tile, the zoom level for which those coordinates are valid and the zoom level the tile represents.
For example, suppose we have three images (img15.png, img16.png and img17.png) for zoom levels 15 through 17 (in version 2 zoom levels), respectively. The top-left corner of the image at level 15 is 1812,1924. You would then run the following commands to generate the tiles:
Here are some key features of "Googletilecutter":
· Tiles most image formats, including GIF, JPEG, PNG and TIFF.
· Works on most flavours of Unix, including Mac OS X.
· Supports version 1 and version 2 zoom levels.
· Automatically calculates offsets for all zoom levels.
· Supports padding from the upper-left as output by the web-based tiling helper.
· Automatically pads image to size appropriate to Google Maps (ie. multiple of 256).
· Optionally discards empty transparent tiles to save space.
· Optional prefix for each tile.
· Outputs tiles in PNG format.
· Compresses tiles with either advpng or pngcrush.
