Jasper

Jasper Image Templates API

The Image Templates API from Jasper — 1 operation(s) for image templates.

Documentation GitHub OpenAPI

Operations 1

POST /beta/image-template/render Render an HTML template to an image with dynamic layer updates #

Specifications

⚙

OpenAPI

https://artifacts.apis.io/jasper-da-com/openapi/jasper-da-com-image-templates-api-openapi.yml

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OpenAPI Specification

openapi: 3.2.0
info:
  title: Jasper Image Templates API
  description: Jasper API
  version: '1.0'
  contact: {}
servers:
- url: https://api.jasper.ai
tags:
- name: Image Templates
  description: ''
paths:
  /beta/image-template/render:
    post:
      description: 'Render an HTML template to an image. Upload an HTML file and specify layer updates using dot notation. Layers are targeted by HTML element ID attribute. Supports text content updates (layers.{id}.content), CSS style updates (layers.{id}.{css-property}), and image updates (src, background-image). CSS property names must use kebab-case (e.g. background-color, font-size). Example: layers.header_text.content="Hello" or layers.logo.src=(file upload).'
      operationId: renderImageTemplate
      parameters: []
      requestBody:
        required: true
        description: HTML template rendering request parameters (form-data)
        content:
          multipart/form-data:
            schema:
              type: object
              properties:
                html_file:
                  type: string
                  format: binary
                  description: The HTML template file to render (max 30MB)
                scale:
                  type: number
                  description: 'Scale factor for the rendered image (0 < scale <= 4). Default: 1'
                  minimum: 0
                  maximum: 4
                  default: 1
                format:
                  type: string
                  enum:
                  - png
                  - jpeg
                  description: 'Output image format. Default: png'
                  default: png
                width:
                  type: number
                  description: Fixed width for rendering in pixels (optional)
                height:
                  type: number
                  description: Fixed height for rendering in pixels (optional)
                layers.{id}.content:
                  type: string
                  description: Update text content for an element by ID
                layers.{id}.src:
                  oneOf:
                  - type: string
                    format: binary
                    description: Upload an image file to replace src attribute
                  - type: string
                    description: URL string to replace src attribute
                layers.{id}.background-image:
                  oneOf:
                  - type: string
                    format: binary
                    description: Upload an image file to replace background-image
                  - type: string
                    description: URL string or value for background-image
                layers.{id}.color:
                  type: string
                  description: Update text color for an element by ID
                layers.{id}.background-color:
                  type: string
                  description: Update background color for an element by ID
                layers.{id}.{css-property}:
                  type: string
                  description: Update any CSS property for an element by ID (e.g., font-size, border, padding)
              required:
              - html_file
              additionalProperties: true
              example:
                html_file: <binary HTML file>
                scale: 1
                format: png
                width: 1200
                height: 630
                layers.header_text.content: New Header
                layers.header_text.color: '#FF0000'
                layers.logo.src: <binary image file>
                layers.bg.background-image: <binary image file>
      responses:
        '200':
          description: The image was successfully rendered from HTML template.
          content:
            image/png:
              schema:
                type: string
                format: binary
            image/jpeg:
              schema:
                type: string
                format: binary
        '400':
          description: Bad request. May be missing required file, invalid HTML, file too large, or invalid layer updates (e.g., element ID not found).
        '500':
          description: Internal server error. Unable to render image from HTML.
      security:
      - X-API-Key: []
      - oauth2:
        - user
      summary: Render an HTML template to an image with dynamic layer updates
      tags:
      - Image Templates
components:
  securitySchemes:
    X-API-Key:
      type: apiKey
      in: header
      name: X-API-Key
      description: Workspace authentication using API key tokens in the X-API-Key header.
    oauth2:
      type: oauth2
      flows:
        authorizationCode:
          authorizationUrl: https://api.jasper.ai/oauth2/authorize
          tokenUrl: https://api.jasper.ai/oauth2/token
          refreshUrl: https://api.jasper.ai/oauth2/token
          scopes:
            user:read: Read user information
            user: Read and write user information
      description: User-level authentication using OAuth bearer tokens in the Authorization header.
x-provenance:
  method: searched
  source: https://developers.jasper.ai/reference
  harvested: '2026-10-23'
  tool: harvest-readme-openapi.py
  note: Assembled verbatim from the OpenAPI definition ReadMe embeds in each operation page of the provider's developer portal; paths and components merged by API title, nothing authored.
  assembled_from:
  - https://developers.jasper.ai/reference/cleanup.md
  - https://developers.jasper.ai/reference/command-2.md
  - https://developers.jasper.ai/reference/completetemplate-1.md
  - https://developers.jasper.ai/reference/createanalysis.md
  - https://developers.jasper.ai/reference/createattachment.md
  - https://developers.jasper.ai/reference/createcontextsource.md
  - https://developers.jasper.ai/reference/createdocument.md
  - https://developers.jasper.ai/reference/createproduct.md
  - https://developers.jasper.ai/reference/createproject.md
  - https://developers.jasper.ai/reference/createtone.md
  - https://developers.jasper.ai/reference/decompose-1.md
  - https://developers.jasper.ai/reference/deleteanalysis.md
  - https://developers.jasper.ai/reference/deletedocumentbyid.md
  - https://developers.jasper.ai/reference/deleteknowledgedocument.md
  - https://developers.jasper.ai/reference/deleteproduct.md
  - https://developers.jasper.ai/reference/deleteproject.md
  - https://developers.jasper.ai/reference/deletetone.md
  - https://developers.jasper.ai/reference/getallaudiences.md
  - https://developers.jasper.ai/reference/getalldocuments.md
  - https://developers.jasper.ai/reference/getallproducts.md
  - https://developers.jasper.ai/reference/getalltemplates-1.md
  - https://developers.jasper.ai/reference/getalltones.md
  - https://developers.jasper.ai/reference/getallusers.md
  - https://developers.jasper.ai/reference/getanalysis.md
  - https://developers.jasper.ai/reference/getaudiencebyid.md
  - https://developers.jasper.ai/reference/getcontextsourcebyid.md
  - https://developers.jasper.ai/reference/getdocumentbyid.md
  - https://developers.jasper.ai/reference/getknowledgedocument.md
  - https://developers.jasper.ai/reference/getknowledgedocuments.md
  - https://developers.jasper.ai/reference/getproductattributes.md
  - https://developers.jasper.ai/reference/getproductbyid.md
  - https://developers.jasper.ai/reference/getprojectbyid.md
  - https://developers.jasper.ai/reference/getprojects.md
  - https://developers.jasper.ai/reference/getrun.md
  - https://developers.jasper.ai/reference/getrunclaims.md
  - https://developers.jasper.ai/reference/getrunrecommendations.md
  - https://developers.jasper.ai/reference/getstyle.md
  - https://developers.jasper.ai/reference/getstylebyid.md
  - https://developers.jasper.ai/reference/gettaskbyid.md
  - https://developers.jasper.ai/reference/gettemplate-1.md
  - https://developers.jasper.ai/reference/gettone.md
  - https://developers.jasper.ai/reference/gettrends.md
  - https://developers.jasper.ai/reference/getuser.md
  - https://developers.jasper.ai/reference/listanalyses.md
  - https://developers.jasper.ai/reference/listanalysissummaries.md
  - https://developers.jasper.ai/reference/listruns.md
  - https://developers.jasper.ai/reference/listtasks.md
  - https://developers.jasper.ai/reference/packshotcompositing.md
  - https://developers.jasper.ai/reference/removebackground.md
  - https://developers.jasper.ai/reference/removetext.md
  - https://developers.jasper.ai/reference/renderimagetemplate.md
  - https://developers.jasper.ai/reference/replacebackground.md
  - https://developers.jasper.ai/reference/runtask.md
  - https://developers.jasper.ai/reference/runtaskstream.md
  - https://developers.jasper.ai/reference/searchknowledge.md
  - https://developers.jasper.ai/reference/uncrop.md
  - https://developers.jasper.ai/reference/updateanalysis.md
  - https://developers.jasper.ai/reference/updatedocument.md
  - https://developers.jasper.ai/reference/updateknowledgedocument.md
  - https://developers.jasper.ai/reference/updateproduct.md
  - https://developers.jasper.ai/reference/updateproject.md
  - https://developers.jasper.ai/reference/updatetone.md
  - https://developers.jasper.ai/reference/uploadknowledgedocument.md
  - https://developers.jasper.ai/reference/upscale.md
  - https://developers.jasper.ai/reference/usage-1.md
  merge:
    pages: 65
    deduped: 240
    conflicts_kept_first: 0