BudgetPixel

BudgetPixel Conversions API

Format conversion for images, video, and audio

Documentation GitHub OpenAPI

Operations 3

POST /convert/audio Convert an audio file #

POST /convert/image Convert an image #

POST /convert/video Convert a video #

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Budgetpixel Conversions API
  version: '2026-06-20'
  contact:
    email: support@budgetpixel.com
    name: BudgetPixel Support
  description: 'Operations tagged Conversions across 2 of this provider''s published API definitions: budgetpixel-openapi.yaml, budgetpixel-openapi.yaml. Each path carries the servers of the definition it was published in.'
servers:
- description: Production
  url: https://api.budgetpixel.com/v1
security:
- ApiKeyAuth: []
tags:
- description: Format conversion for images, video, and audio
  name: Conversions
paths:
  /convert/audio:
    post:
      description: 'Convert audio to `mp3`, `wav`, `ogg`, or `m4a`. **Synchronous** — the converted

        file''s download URL is in the response.


        **Pricing: 3 credits per conversion**, charged only on success. Estimate via

        [`POST /v1/cost`](/api-reference/models/estimate-the-cost-of-a-request) with

        `{"model": "convert-audio"}`.


        `file` accepts a public URL (up to 30 MB), an uploaded-file URL from

        [`POST /v1/uploads`](/api-reference/files/upload-input-media), a data URI, or raw

        base64. Input limit 30 MB. Results are stored privately and deleted after 7 days.

        '
      operationId: convertAudio
      requestBody:
        content:
          application/json:
            schema:
              properties:
                file:
                  description: The audio to convert — public URL, uploaded-file URL, data URI, or raw base64.
                  type: string
                target:
                  description: Output format.
                  enum:
                  - mp3
                  - wav
                  - ogg
                  - m4a
                  type: string
              required:
              - file
              - target
              type: object
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConvertResponse'
          description: Converted. Download from `url` (valid several hours; file kept 7 days).
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
          description: Insufficient credits for this conversion.
        '403':
          $ref: '#/components/responses/Forbidden'
        '429':
          $ref: '#/components/responses/TooManyRequests'
      summary: Convert an audio file
      tags:
      - Conversions
    servers:
    - description: Production
      url: https://api.budgetpixel.com/v1
  /convert/image:
    post:
      description: 'Convert an image to `png`, `jpg`, `webp`, or `gif`. **Synchronous** — the converted

        file''s download URL is in the response (no job to poll).


        **Pricing: 2 credits per conversion**, charged only on success. Estimate via

        [`POST /v1/cost`](/api-reference/models/estimate-the-cost-of-a-request) with

        `{"model": "convert-image"}`.


        `file` accepts a public URL (up to 30 MB), an uploaded-file URL from

        [`POST /v1/uploads`](/api-reference/files/upload-input-media), a data URI, or raw

        base64. Input limit 20 MB. Results are stored privately and deleted after 7 days.

        '
      operationId: convertImage
      requestBody:
        content:
          application/json:
            schema:
              properties:
                file:
                  description: The image to convert — public URL, uploaded-file URL, data URI, or raw base64.
                  type: string
                target:
                  description: Output format.
                  enum:
                  - png
                  - jpg
                  - webp
                  - gif
                  type: string
              required:
              - file
              - target
              type: object
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConvertResponse'
          description: Converted. Download from `url` (valid several hours; file kept 7 days).
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
          description: Insufficient credits for this conversion.
        '403':
          $ref: '#/components/responses/Forbidden'
        '429':
          $ref: '#/components/responses/TooManyRequests'
      summary: Convert an image
      tags:
      - Conversions
    servers:
    - description: Production
      url: https://api.budgetpixel.com/v1
  /convert/video:
    post:
      description: 'Convert a video to `mp4`, `webm`, `mov`, or `gif` (video→gif is palette-optimized).

        An animated GIF input converts to any video target (gif→mp4). **Synchronous** — the

        converted file''s download URL is in the response.


        **Pricing: 10 credits per conversion**, charged only on success. Estimate via

        [`POST /v1/cost`](/api-reference/models/estimate-the-cost-of-a-request) with

        `{"model": "convert-video"}`.


        `file` accepts a public URL (up to 30 MB), an uploaded-file URL from

        [`POST /v1/uploads`](/api-reference/files/upload-input-media) (up to 50 MB), a data

        URI, or raw base64. **Videos must be 30 seconds or shorter.** Results are stored

        privately and deleted after 7 days.

        '
      operationId: convertVideo
      requestBody:
        content:
          application/json:
            schema:
              properties:
                file:
                  description: The video (or animated GIF) to convert — public URL, uploaded-file URL, data URI, or raw base64.
                  type: string
                target:
                  description: Output format.
                  enum:
                  - mp4
                  - webm
                  - mov
                  - gif
                  type: string
              required:
              - file
              - target
              type: object
        required: true
      responses:
        '200':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ConvertResponse'
          description: Converted. Download from `url` (valid several hours; file kept 7 days).
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '402':
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
          description: Insufficient credits for this conversion.
        '403':
          $ref: '#/components/responses/Forbidden'
        '429':
          $ref: '#/components/responses/TooManyRequests'
      summary: Convert a video
      tags:
      - Conversions
    servers:
    - description: Production
      url: https://api.budgetpixel.com/v1
components:
  responses:
    Forbidden:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Authenticated but not permitted (plan gate, ownership, account restriction). Content-moderation blocks are 400, not 403.
    BadRequest:
      content:
        application/json:
          schema:
            oneOf:
            - $ref: '#/components/schemas/Error'
            - $ref: '#/components/schemas/ModerationBlocked'
      description: The request was malformed, referenced an unavailable model, or was blocked by input content moderation (moderation blocks carry a `restriction_reason` — see ModerationBlocked).
    TooManyRequests:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Rate or queue limit reached. Retry after a short delay.
    Unauthorized:
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
      description: Missing or invalid API key.
  schemas:
    ModerationBlocked:
      description: Returned (with HTTP 400) when the input content moderation gate blocks a generation request. The block is a property of the request's prompt or input media — reword the prompt or change the input and retry. Branch on `restriction_reason`, which is stable and machine-readable.
      properties:
        error:
          description: Human-readable explanation of the block.
          type: string
        restriction_reason:
          description: Stable machine-readable block reason.
          enum:
          - input_csam
          - input_explicit_adult
          - input_upload_nudity
          - input_celebrity_likeness
          - strict_model_nsfw
          type: string
      required:
      - error
      - restriction_reason
      type: object
    ConvertResponse:
      description: A completed format conversion. Download from `url`.
      properties:
        content_type:
          example: image/webp
          type: string
        credits_charged:
          description: Credits charged for this conversion (2 image / 10 video / 3 audio).
          type: integer
        filename:
          description: Suggested download filename.
          example: photo.webp
          type: string
        retention:
          example: 7 days
          type: string
        size_bytes:
          description: Converted file size in bytes.
          type: integer
        url:
          description: Signed download URL for the converted file (valid several hours; the file itself is kept 7 days).
          format: uri
          type: string
      type: object
    Error:
      properties:
        error:
          properties:
            code:
              description: Stable machine-readable code.
              example: model_not_available
              type: string
            message:
              type: string
            type:
              description: Error category.
              example: invalid_request_error
              type: string
          required:
          - type
          - code
          - message
          type: object
      required:
      - error
      type: object
  securitySchemes:
    ApiKeyAuth:
      bearerFormat: bpx_live_*
      description: 'API key as a bearer token: Authorization: Bearer bpx_live_xxx'
      scheme: bearer
      type: http
x-refined-from:
- budgetpixel-openapi.yaml
- budgetpixel-openapi.yaml