the GeoJSON I want to see...

gistfile1.txt

{
    "type": "GeometryCollection",
    "geometries": [
        {
            "type": "Polygon",
            "coordinates": [
                [
                    [
                        251796.55712,
                        5746131.5569
                    ],
                    [
                        252046.54222,
                        5746131.5569
                    ],
                    [
                        252046.54222,
                        5746381.541999999
                    ],
                    [
                        251796.55712,
                        5746381.541999999
                    ],
                    [
                        251796.55712,
                        5746131.5569
                    ]
                ]
            ],
            "properties": {
                "qc_score": -1,
                "blur_score": 66.33602489549324
            }
        }],
        ],
    "properties": {
        "image": "../sample-data/image.tif",
        "date": "04:10:2019T23:43:05"
    }
}
        

Hey @adamsteer

It needs to be something like

{
    "type": "FeatureCollection",
    "features": [
        {
            "type": "Feature",
            "properties": {
                "qc_score": -1,
                "blur_score": 66.33602489549324
            },
            "geometry": {
                "type": "Polygon",
                "coordinates": [
                    [
                        [
                            251796.55712,
                            5746131.5569
                        ],
                        [
                            252046.54222,
                            5746131.5569
                        ],
                        [
                            252046.54222,
                            5746381.541999999
                        ],
                        [
                            251796.55712,
                            5746381.541999999
                        ],
                        [
                            251796.55712,
                            5746131.5569
                        ]
                    ]
                ]
            }
        }
    ]
}

This bit however is problematic

    "properties": {
        "image": "../sample-data/image.tif",
        "date": "04:10:2019T23:43:05"
    }

You could try and put it on the FeatureCollection however it won't get picked up by something like QGIS. If you want it to get picked up by QGIS you need to add to the Feature properties object.

Thanks @rowanwins - I’ve switched to FeatureCollection - and the collection level properties block doesn’t appear to cause issues in QGIS.

Collection level properties would be nice - to avoid saying the same thing over. As an example, in rasters and point clouds we state the metadata at the ‘collection of pixels’ or ‘collection of points’ level, since it’s kind of insane to create a bunch of duplicate data.

Yeah unfortunately it's a spec thing, GeoJSON is a very bare-bones spec.