When designing a PS1 render I need to convert a lot of images to the PS1 style by making the image smaller and changing the colour to index with 16 colours. Doing this for an Image heavy render I can spent a lot of time doing this so I decided to automate it in photoshop so I could change the texture with one click.
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In the action menu you can see the automate action I made called "(16 colours) PS1 Textures" then used it changes the image size to 256px by 256px and converts the image to 16 colours.
It takes an image like this
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And converts into this with one click
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Although this may seem like a small thing in the grand scale this will shave a lot of time when I'm making a render.