GoNitro Conversions API

openapi: 3.0.3
info:
  title: Nitro PDF Services Public Authentication Conversions API
  description: 'REST API for Nitro PDF Services: convert, transform, extract, and generate PDF documents, plus async job status/result retrieval. Machine-to-machine OAuth 2.0 client-credentials; short-lived bearer tokens. Assembled by API Evangelist from Nitro''s published per-tool OpenAPI reference fragments; schemas preserved verbatim.'
  version: '1.0'
servers:
- url: https://api.gonitro.dev
  description: API server
security:
- BearerAuth: []
tags:
- name: Conversions
paths:
  /conversions:
    post:
      tags:
      - Conversions
      summary: PDF to PDF/A
      description: 'Convert a PDF file to PDF/A archival format


        This endpoint is polymorphic: the operation performed is selected by the request body. Documented tools on this endpoint: imgtopdf, misctopdf, mstopdf, pdfa, pdftoimg, pdftoms.'
      parameters:
      - name: Accept
        in: header
        schema:
          $ref: '#/components/schemas/AcceptHeader'
      - name: Prefer
        in: header
        schema:
          $ref: '#/components/schemas/PreferHeader'
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                method:
                  type: string
                  description: 'The Conversions'' endpoint method: `convert`'
                  default: convert
                  enum:
                  - convert
                params:
                  $ref: '#/components/schemas/ConversionPDFAParams'
                file:
                  $ref: '#/components/schemas/FileUpload'
                delivery:
                  $ref: '#/components/schemas/DeliverySingleFileOut'
              required:
              - method
              - params
              - file
      responses:
        '200':
          description: "Returns either JSON or binary output depending on the Accept header (defaults to JSON).\n JSON responses include a file URL for synchronous tasks or a job status for asynchronous tasks."
          content:
            application/json:
              schema:
                oneOf:
                - $ref: '#/components/schemas/PlatformOperationFileResult'
                - $ref: '#/components/schemas/AsyncJobResponse'
            application/octet-stream:
              schema:
                type: string
                format: binary
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '404':
          $ref: '#/components/responses/NotFound'
        '413':
          $ref: '#/components/responses/ContentTooLarge'
        '422':
          $ref: '#/components/responses/UnprocessableEntity'
        '500':
          $ref: '#/components/responses/InternalServerError'
      security:
      - BearerAuth: []
      operationId: convertDocument
      x-nitro-tools:
      - imgtopdf
      - misctopdf
      - mstopdf
      - pdfa
      - pdftoimg
      - pdftoms
components:
  schemas:
    PlatformOperationFileResult:
      type: object
      title: Sync - Single File
      properties:
        file:
          $ref: '#/components/schemas/FileInfo'
    HTTPCall:
      type: object
      properties:
        URL:
          type: string
          description: Your delivery endpoint URL
          nullable: false
          format: uri
        verb:
          type: string
          description: The HTTP method
          default: PUT
          enum:
          - GET
          - POST
          - PUT
          - DELETE
          - PATCH
        headers:
          type: array
          nullable: true
          description: Headers your file delivery endpoint might need (Optional)
          items:
            $ref: '#/components/schemas/Header'
      required:
      - URL
      - verb
    Header:
      type: object
      properties:
        name:
          type: string
        value:
          type: string
      required:
      - name
      - value
    AcceptHeader:
      type: string
      enum:
      - application/json
      - application/octet-stream
      - '*/*'
      default: '*/*'
      description: "Controls response format and behavior. See endpoint description above for detailed response combinations.\n- `application/json`: Returns JSON response with operation result\n- `application/octet-stream`: Returns binary file content \n- `*/*`: Defaults to JSON response"
    FileUpload:
      description: "The file to process. It can be provided as a binary upload or as a JSON remote file reference. \n\n"
      oneOf:
      - type: string
        format: binary
        description: "#### Binary file \n Standard multipart file binary upload field"
      - type: object
        title: Remote file
        properties:
          URL:
            type: string
            format: uri
            description: URL of the remote file to process
          contentType:
            type: string
            description: The MIME type of the remote file
            example: application/pdf
        required:
        - URL
        - contentType
        description: "#### Remote file \n JSON objects containing file URL and content type, sent with specific multipart encoding: `type` and `filename`. The playground **doesn't support** them. Plase test with an alternative tool (Ex: Postman). \n\nExample cURL file field for remote file:\n```bash\n--form 'file={\n   \"URL\":\"https://your-file.pdf\",\n   \"contentType\":\"application/pdf\"\n}\n;type=application/vnd.gonitro.url+json\n;filename=https://your-file.pdf'\n```"
    FileInfo:
      type: object
      properties:
        URL:
          type: string
          format: uri
          description: URL with processed file for download. Field will be `null` if `delivery` parameter for post-processing upload is defined.
          nullable: true
        contentType:
          type: string
          description: The file type
          example: application/json
        metadata:
          type: object
          properties:
            fileSizeBytes:
              type: number
              nullable: true
            pageCount:
              type: number
              description: Number of pages in resulting document.
              nullable: true
    Callback:
      type: object
      description: POST endpoint that will get JOB ID and location when processing starts only on async processesing (see example above)
      properties:
        URL:
          type: string
          description: Your POST endpoint callback URL.
          nullable: false
          format: uri
        headers:
          type: array
          description: Headers your callback endpoint might need
          items:
            $ref: '#/components/schemas/Header'
      required:
      - URL
    DeliverySingleFileOut:
      type: object
      properties:
        uploadResultTo:
          $ref: '#/components/schemas/HTTPCall'
        callback:
          $ref: '#/components/schemas/Callback'
      description: "This endpoint lets you supply your own URL to receive the single-file output. The URL may point to a custom API endpoint or a pre-signed S3 URL. \n\n The HTTP method defaults to PUT, but you can change it based on your implementation needs via the `verb` parameter. You can also provide custom headers, such as authentication headers or any others required by your endpoint."
    PreferHeader:
      type: string
      enum:
      - respond-async
      description: 'Controls synchronous vs asynchronous operation. See endpoint description above for behavior details.

        - `respond-async`: Makes request asynchronous, returns job status for polling

        - No value: Synchronous response'
    ConversionPDFAParams:
      title: PDF/A
      type: object
      required:
      - to
      - conformance
      properties:
        to:
          type: string
          enum:
          - pdfa
          default: pdfa
          description: Target format for the conversion.
        conformance:
          type: string
          enum:
          - 1b
          - 1a
          - 2b
          - 2u
          - 2a
          - 3b
          - 3u
          - 3a
          description: PDF/A conformance level. Levels ending in `a` (accessible) require the source PDF to be tagged; untagged PDFs submitted with an `a`-level conformance will return an error. Use `b` or `u` variants for general-purpose archiving.
          example: 2b
        imageQuality:
          type: number
          format: float
          minimum: 0.01
          maximum: 1
          default: 0.8
          description: Image compression quality during conversion. `1.0` preserves maximum quality; `0.01` applies maximum compression. Lower values reduce file size at the cost of image fidelity.
          example: 0.8
        copyMetadata:
          type: boolean
          default: true
          description: When `true`, document metadata (author, creation date, title, etc.) is preserved in the output. When `false`, metadata is stripped.
          example: true
    AsyncJobResponse:
      type: object
      title: Async - Job
      properties:
        jobID:
          type: string
          example: 01234567-89ab-cdef-0123-456789abcdef
        status:
          type: string
          enum:
          - running
        progress:
          type: number
          description: Progress of the job as a float between 0.0 and 1.0
          format: float
          default: 0
          example: 0
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      bearerFormat: JWT