Free · See where points gather

Point Heatmap Maker

Turn GeoJSON points into a smooth heatmap and control its reach and strength.

Live interactive map
Local file handling
PNG, JSON, or GeoJSON

Build the map

Use the example or add your own GeoJSON. Your data stays in this tab.

Point GeoJSON

{
  "type": "FeatureCollection",
  "features": [
    {
      "type": "Feature",
      "properties": {
        "name": "West Market",
        "value": 32
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.46,
          43.64
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Parkdale",
        "value": 45
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.44,
          43.65
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Liberty",
        "value": 78
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.42,
          43.66
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Fort York",
        "value": 88
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.4,
          43.64
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "King West",
        "value": 96
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.39,
          43.67
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Harbourfront",
        "value": 70
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.37,
          43.65
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "St. Lawrence",
        "value": 58
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.35,
          43.66
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Distillery",
        "value": 74
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.33,
          43.68
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Port Lands",
        "value": 42
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.31,
          43.67
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Leslieville",
        "value": 64
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.29,
          43.7
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Beaches West",
        "value": 51
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.27,
          43.69
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Beaches East",
        "value": 36
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.25,
          43.72
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Downtown North",
        "value": 84
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.38,
          43.69
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Cabbagetown",
        "value": 49
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.36,
          43.7
        ]
      }
    },
    {
      "type": "Feature",
      "properties": {
        "name": "Riverdale",
        "value": 60
      },
      "geometry": {
        "type": "Point",
        "coordinates": [
          -79.34,
          43.71
        ]
      }
    }
  ]
}

Background mapWeight fieldBlank gives every point equal weightHeat reach10 to 80 pixelsHeat strength0.2 to 3

No background tiles

The camera JSON updates when you move the map or change a field.Ready

Starting the interactive mapMapLibre is loading in this tab.

Centre-79.3832, 43.6532

Zoom10.5

Pitch0°

Bearing0°

Three simple steps

How to use it

Add a GeoJSON point collection.
Pick a number field or use one equal weight per point.
Move and zoom the map, then download the view as a PNG.

Your pasted map data stays in this tab

MapLibre draws your GeoJSON in the browser. Bookify does not upload or save it. Street backgrounds request public demo tiles, while Paper and Night use no background tiles. A pasted style may request the sources named inside that style.