Import & export

Portable query JSON

Export saves your current query tree and data source as JSON. Import loads a file back into the builder. Share copies the JSON to your clipboard.

Header actions

Export — downloads lantern-query-{timestamp}.json
Import — pick a JSON file from disk
Share — copy export JSON to clipboard
Save (Ctrl+S) — push a snapshot to Activity history

Export format

{
  "version": 1,
  "schemaId": "users",
  "exportedAt": "2025-06-06T12:00:00.000Z",
  "root": {
    "id": "root",
    "type": "group",
    "logic": "and",
    "children": [ ... ]
  }
}

Import safety

Lantern validates imports before applying them:

Must be valid JSON with version, schemaId, and root
Maximum tree depth enforced (protects against oversized payloads)
Node shapes must match expected rule/group structure

Malformed files show an error in the header or import modal.

Presets vs snapshots

Feature	Where	Use case
Snapshots	Activity tab / Ctrl+S	Version history while you work
Presets	Details tab → Quick presets	Named templates you reload often
Export file	Header → Export	Share with others or backup offline

To save a preset: type a name in the Details tab input and press Enter. Load from the dropdown below.

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