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

# Get a submission's signature image with the Forms API

> Returns the signature image captured for a signature field on a submission, as a PNG. The response is sent with `Cache-Control: no-store, private`.




## OpenAPI

````yaml openapi-forms GET /api/forms/{form_id}/submissions/{submission_id}/signature/{field_name}
openapi: 3.0.0
info:
  title: Paubox Forms API
  description: >
    The Paubox Forms API has two kinds of endpoints. Public, respondent-facing
    endpoints (retrieving a form definition for rendering and submitting a form
    response) require no authentication. Authenticated management endpoints
    (creating, listing, updating, copying, archiving forms, and reading or
    exporting submissions) require a Paubox API key with the "forms" scope, sent
    as `Authorization: Bearer YOUR_API_KEY`. API keys are generated in the
    Paubox dashboard.
  version: 1.0.0
servers:
  - url: https://api.paubox.com/v1/forms
    description: Paubox Forms API
security: []
tags:
  - name: Forms
    description: Retrieve form definitions and accept submissions
  - name: Form management
    description: Create, list, update, copy, and archive forms (requires API key)
  - name: Submissions
    description: List and export form submissions (requires API key)
paths:
  /api/forms/{form_id}/submissions/{submission_id}/signature/{field_name}:
    get:
      tags:
        - Submissions
      summary: Get a submission's signature image
      description: >
        Returns the signature image captured for a signature field on a
        submission, as a PNG. The response is sent with `Cache-Control:
        no-store, private`.
      operationId: getSubmissionSignature
      parameters:
        - name: form_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: UUID of the form
        - name: submission_id
          in: path
          required: true
          schema:
            type: string
            format: uuid
          description: UUID of the submission
        - name: field_name
          in: path
          required: true
          schema:
            type: string
          description: >
            The `field_name` of a `Signature` component in the form's
            `form_json`.
      responses:
        '200':
          description: PNG image of the signature
          content:
            image/png:
              schema:
                type: string
                format: binary
        '401':
          description: Missing or invalid API key, or the key lacks the "forms" scope
        '403':
          description: The form belongs to a different customer
        '404':
          description: >
            The form or the submission does not exist, `field_name` is not a
            signature field answered on the submission, or no signature image is
            stored for it (for example, a typed signature).
        '500':
          description: Internal server error
      security:
        - bearerAuth: []
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >
        Paubox API key sent as `Authorization: Bearer YOUR_API_KEY`. API keys
        are created in the Paubox dashboard and must have the "forms" scope; a
        key without the forms scope receives 401 Unauthorized. A valid key used
        against a resource that belongs to a different customer receives 403
        Forbidden.

````

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