ImageOptim is a free OS X application for optimising and so reducing the file size of images. It works via the Services Menu or simply launching the app and drag-and-drop a PNG, JPEG or GIF file onto its window. One extra component can added to enhance the PNG optimisation. The tool is called PNGOUT. It isn’t essential for ImageOptim to work to have PNGOUT installed. I found that PNGOUT needed to be added to the hidden
/usr/bin/ folder. Adding it to another folder did not work for me.
- Download PNGOUT
- Open: ImageOptim > Preferences… > PNGOUT
- Type the PNGOUT path as:
/usr/bin/pngout
- Alteratively: It is possible to browse to the hidden folder in OS X 10.6 Snow Leopard. Click Browse button (shown in step 2) then press
Command Shift . to reveal all hidden folders and files. Press same combination to hide them again. In this case, it’s as easy to type the path.
- Add the PNGOUT file into the
/usr/bin/ folder. This is the method I used to add PNGOUT to /usr/bin/
- Authenticate the move of PNGOUT to
bin
