# parse-binary

Decode `event.payload` from a base64-encoded string to a text string using the specified `encoding`.  The output event has `{payload: string}` with the decoded value.  Events with no `payload` field are dropped.

## Config

**Required:**
- `encoding`: One of `utf8`, `ascii`, or `base64`
  - `utf8`: Decode base64 → UTF-8 string (drops event on invalid UTF-8)
  - `ascii`: Decode base64 → ASCII string, replacing non-ASCII bytes with `?`
  - `base64`: Passthrough — payload is already a base64 string, emitted unchanged

## Example

```yaml
pipeline:
  parse-binary:
    config:
      encoding: utf8
```