Can you make your images transparent?

I’m trying to make my images (for a watermark) slightly transparent. Is this possible?

Yes you can. You can use the opacity property to make your image asset transparent.

{
    "timeline": {
        "soundtrack": {
            "src": "https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/private/epic.mp3",
            "effect": "fadeInFadeOut"
        },
        "tracks": [
            {
                "clips": [
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-pubic-files.s3-ap-southeast-2.amazonaws.com/examples/logo-reverse.png"
                        },
                        "start": 0,
                        "length": 1.96,
                        "scale": 0.15,
                        "position": "center"
                    },
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-pubic-files.s3-ap-southeast-2.amazonaws.com/examples/logo-reverse.png"
                        },
                        "start": 2,
                        "length": 1.96,
                        "scale": 0.15,
                        "position": "center",
                        "opacity": 0.75
                    },
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-pubic-files.s3-ap-southeast-2.amazonaws.com/examples/logo-reverse.png"
                        },
                        "start": 4,
                        "length": 1.96,
                        "scale": 0.15,
                        "position": "center",
                        "opacity": 0.5
                    },
                    {
                        "asset": {
                            "type": "image",
                            "src": "https://shotstack-pubic-files.s3-ap-southeast-2.amazonaws.com/examples/logo-reverse.png"
                        },
                        "start": 6,
                        "length": 1.96,
                        "scale": 0.15,
                        "position": "center",
                        "opacity": 0.25
                    }
                ]
            },
            {
                "clips": [
                    {
                        "asset": {
                            "type": "video",
                            "src": "https://s3-ap-southeast-2.amazonaws.com/shotstack-assets/footage/cat.hd.mp4",
                            "trim": 5
                        },
                        "start": 0,
                        "length": 10
                    }
                ]
            }
        ]
    },
    "output": {
        "format": "mp4",
        "resolution": "sd"
    }
}