Before / after dumbbell

Dumbbell styletype: "dumbbell"

Render before→after comparison images as dumbbell range plots with a named legend and gain/loss coloring, set per API call. Create before/after charts free.

Edit it — this is the actual editor panel

Design JSON — “Before / after” variant

{
  "title": "Dumbbell sample",
  "description": "Region revenue, Q1 → Q2",
  "dimensions": {
    "width": 800,
    "height": 420
  },
  "background": {
    "color": "#ffffff"
  },
  "components": [
    {
      "id": "sample-dumbbell",
      "key": "change",
      "type": "dumbbell",
      "position": {
        "x": 120,
        "y": 60
      },
      "rotation": 0,
      "size": {
        "width": 560,
        "height": 300
      },
      "dynamic": true,
      "properties": {
        "data": [
          {
            "label": "North",
            "from": 120,
            "to": 180
          },
          {
            "label": "South",
            "from": 90,
            "to": 140
          },
          {
            "label": "East",
            "from": 160,
            "to": 150
          },
          {
            "label": "West",
            "from": 70,
            "to": 130
          }
        ],
        "fromColor": "#94a3b8",
        "toColor": "#2563eb",
        "colorByDirection": true,
        "showValues": true,
        "fromLabel": "Before",
        "toLabel": "After",
        "showLegend": true,
        "valueFormat": "compact",
        "showAxis": true,
        "showGrid": true,
        "opacity": 1
      }
    }
  ]
}

Dumbbell examples

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

Conversion lift after redesign

Three funnel steps improving after a redesign, in percent.

API overrides for this example

{
  "change.colorByDirection": true,
  "change.showValues": true,
  "change.fromLabel": "Before",
  "change.toLabel": "After",
  "change.showLegend": true,
  "change.data": [
    {
      "label": "Signup",
      "from": 42,
      "to": 58
    },
    {
      "label": "Activate",
      "from": 25,
      "to": 39
    },
    {
      "label": "Paid",
      "from": 8,
      "to": 14
    }
  ],
  "change.valueFormat": "percent"
}

Load time before/after

Page load times dropping after optimization (lower is better).

API overrides for this example

{
  "change.colorByDirection": false,
  "change.showValues": true,
  "change.fromLabel": "Before",
  "change.toLabel": "After",
  "change.showLegend": true,
  "change.data": [
    {
      "label": "Home",
      "from": 3.4,
      "to": 1.2
    },
    {
      "label": "Product",
      "from": 4.1,
      "to": 1.8
    },
    {
      "label": "Checkout",
      "from": 5.2,
      "to": 2.1
    }
  ],
  "change.toColor": "#16a34a",
  "change.fromColor": "#dc2626"
}

When to use the before / after style

Campaign before/after metric cards
A/B-test result graphics
Program impact "before → after" visuals

Use it dynamically via the API

Push fresh rows per render with '<key>.data' (or just '<key>') as [{ label, from, to }]; colors, labels and format are overridable too.

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 '{
    "change.data": [
        {
            "label": "North",
            "from": 120,
            "to": 180
        },
        {
            "label": "South",
            "from": 90,
            "to": 140
        },
        {
            "label": "East",
            "from": 160,
            "to": 150
        },
        {
            "label": "West",
            "from": 70,
            "to": 130
        }
    ],
    "change.fromColor": "#94a3b8",
    "change.toColor": "#2563eb",
    "change.colorByDirection": true,
    "change.showValues": true,
    "change.fromLabel": "Before",
    "change.toLabel": "After",
    "change.showLegend": true,
    "change.valueFormat": "compact",
    "change.showAxis": true,
    "change.showGrid": true,
    "change.opacity": 1
}'

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

Other dumbbell styles

DefaultBefore / afterDark

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