Sparkline chart

Chart styletype: "chart"

Axis-free mini line charts for stat tiles and inline trend hints — data refreshed on every API call. Generate sparkline images free with Imejis today.

Edit it — this is the actual editor panel

Design JSON — “Sparkline” variant

{
  "title": "Chart sample",
  "description": "A dynamic bar chart",
  "dimensions": {
    "width": 800,
    "height": 420
  },
  "background": {
    "color": "#ffffff"
  },
  "components": [
    {
      "id": "sample-chart",
      "key": "sales",
      "type": "chart",
      "position": {
        "x": 240,
        "y": 150
      },
      "rotation": 0,
      "size": {
        "width": 320,
        "height": 120
      },
      "dynamic": true,
      "properties": {
        "chartType": "line",
        "data": [
          12,
          28,
          20,
          34,
          26
        ],
        "labels": [
          "Mon",
          "Tue",
          "Wed",
          "Thu",
          "Fri"
        ],
        "colors": [],
        "orientation": "vertical",
        "showAxis": true,
        "showGrid": true,
        "showValues": false,
        "valueFormat": "number",
        "opacity": 1,
        "sparkline": true,
        "lineWidth": 3
      }
    }
  ]
}

Chart examples

Real renders of the sparkline chart — each one is the same component with different property values, and the API payload below each preview reproduces it exactly.

Upward trend hint

A green mini line for a KPI tile that is moving the right way.

API overrides for this example

{
  "sales.chartType": "line",
  "sales.sparkline": true,
  "sales.lineWidth": 3,
  "sales.data": [
    12,
    14,
    13,
    17,
    19,
    24
  ],
  "sales.colors": [
    "#10B981"
  ]
}

Downward pressure indicator

A red sparkline flagging a declining metric at a glance.

API overrides for this example

{
  "sales.chartType": "line",
  "sales.sparkline": true,
  "sales.lineWidth": 3,
  "sales.data": [
    31,
    28,
    29,
    24,
    22,
    18
  ],
  "sales.colors": [
    "#EF4444"
  ]
}

When to use the sparkline style

Trend hints inside KPI stat tiles
Compact email dashboard rows
OG images with a subtle metric trend

Use it dynamically via the API

Feed fresh numbers via '<key>.data' (or '<key>.series' for multi-series), and swap '<key>.labels' or '<key>.chartType' per render.

Full API request with this variant's current values — the playground above sends only the properties you change

curl --location 'https://render.imejis.io/v1/{{YOUR_DESIGN_ID}}' \
--header 'dma-api-key: {{YOUR_API_KEY}}' \
--header 'Content-Type: application/json' \
--data '{
    "sales.chartType": "line",
    "sales.data": [
        12,
        28,
        20,
        34,
        26
    ],
    "sales.labels": [
        "Mon",
        "Tue",
        "Wed",
        "Thu",
        "Fri"
    ],
    "sales.colors": [],
    "sales.orientation": "vertical",
    "sales.showAxis": true,
    "sales.showGrid": true,
    "sales.showValues": false,
    "sales.valueFormat": "number",
    "sales.opacity": 1,
    "sales.sparkline": true,
    "sales.lineWidth": 3
}'

Only send the properties you want to change — everything else keeps its design value. See the API documentation for all languages.

Other chart styles

Default Line Area Horizontal bars Stacked seriesSparklineMulti-line

See the chart component page for the full property reference and FAQs.