Rawker is a freeware converter program for RAW files produced by digital photo cameras. It's philosophy is the good old Apple motto: "Keep it simple". It allows you to convert a single RAW file or batch process a folder of RAW files. It is also possible to specify a hot folder that Rawker scans every few seconds. When new files show up in the hot folder, Rawker automatically converts them.
Before processing any files you can modify settings that may optimize the appearance of your image(s). These settings can be saved in a file and re-loaded later.
During batch processing Rawker shows the image it is currently working on. Rawker produces TIFF image files with 16 bits color depth (which is 48 bits per RGB pixel) or PNG (16 bits) or JPEG (8 bits) files.
Metadata present in the RAW files will be preserved when exporting as TIFF and JPEG output files.
Rawker converts RAW files using one of two modes: It can convert RAW files using Apple's Core Graphics (Quartz) technology, or it can use Dave Coffin's DCRaw tool. You choose which mode Rawker will use for RAW file conversion. DCRaw doesn't need to be installed separately, it's embedded into Rawker.