> ## Documentation Index
> Fetch the complete documentation index at: https://docs.runpulse.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Word-Level Bounding Boxes

> Return exact word coordinates for source-grounded review, QA, and overlays.

Standard extraction returns block-level bounding boxes for text, tables, and figures. Turn on word-level bounding boxes when you need exact word coordinates for review overlays, field-level QA, redaction previews, evidence packs, or high-trust citation UX.

[Platform sample: Bank Statement](https://platform.runpulse.com/dashboard/examples/637e5678-30b1-45fa-acc4-877f2d636419)

<img src="https://mintcdn.com/pulseai/OJ897TEZf8bV6lk8/images/platform/word-level-bbox-toggle.png?fit=max&auto=format&n=OJ897TEZf8bV6lk8&q=85&s=f7b1d1911b0b076576fa16d671998600" alt="Word-level bounding box toggle in the Platform" width="688" height="142" data-path="images/platform/word-level-bbox-toggle.png" />

```json theme={null}
{
  "file_url": "https://platform.runpulse.com/api/examples/637e5678-30b1-45fa-acc4-877f2d636419/pdf",
  "extensions": {
    "alt_outputs": {
      "wlbb": true
    }
  }
}
```

Word-level output is returned at `extensions.altOutputs.wlbb`. It is PDF-only and can make results much larger, so enable it for review and QA workflows rather than every ingestion job.

<img src="https://mintcdn.com/pulseai/OJ897TEZf8bV6lk8/images/platform/word-level-bbox-output.png?fit=max&auto=format&n=OJ897TEZf8bV6lk8&q=85&s=a32a03a841e594c3ecf34a829d1efb4b" alt="Bank statement with word-level bounding boxes overlaid" width="705" height="893" data-path="images/platform/word-level-bbox-output.png" />

For most review workflows, the standard bounding box layer is enough:

<img src="https://mintcdn.com/pulseai/OJ897TEZf8bV6lk8/images/platform/bounding-box-output.png?fit=max&auto=format&n=OJ897TEZf8bV6lk8&q=85&s=0b562133d347513283ce08e2caeb3ca2" alt="Bank statement with standard layout bounding boxes overlaid" width="665" height="832" data-path="images/platform/bounding-box-output.png" />

<Card title="Bounding Boxes" icon="vector-square" href="/api-reference/bounding-boxes">
  Understand block-level and word-level source coordinates.
</Card>