How can I save an image as a 2-bit PNG. any ideas?


Im looking to save an icon as a 2-bit PNG or BMP, any ideas? The lowest option in photoshop is 4-bit.

My icons are 4-levels grayscale and must be saved as a 2-bit image. Is there a trick or a converter or something? I created these icons in both vector and pixel format using illustrator and photoshop, the tricky part now is giving the developers a 2-bit image file.

Any suggestions are greatly appreciated.

8/12/2015 8:15:00 PM

If you're using Adobe Photoshop you can simply press Ctrl + Shift + Alt + S to open the "Save for Web..."-Dialogue

Once you're there you just need to click at the top on the PNG-preset and change the amont of colors to "2". If they dont already appear as plain black and plain white you can set them manually.

There's also a filter available in Photoshop that lets you create exactly this effect.
The good thing about the filter is, that you can decide where exactly the white/black border is

8/12/2015 10:22:00 PM