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

# Translate a document

> Translate one TXT, DOCX, or searchable PDF document. DOCX and PDF translations preserve the source document format and retain as much layout and formatting as possible.



## OpenAPI

````yaml /openapi.json post /translate/v1/document
openapi: 3.1.0
info:
  title: Case.dev API
  description: >-
    The AI-native platform for legal technology. Build smarter legal
    applications with our suite of AI-powered APIs.
  version: 1.0.0
  contact:
    name: Case.dev Support
    email: support@casemark.com
    url: https://case.dev
  license:
    name: Proprietary
    url: https://case.dev/terms
servers:
  - url: https://api.case.dev
    description: Production
security:
  - bearerAuth: []
tags:
  - name: Vaults
    description: Secure document storage with semantic search and GraphRAG
  - name: Memory
    description: >-
      Persistent memory for AI agents with semantic search and 12 generic
      indexed tag fields
  - name: OCR
    description: Extract text from PDFs, images, and scanned documents
  - name: Voice
    description: Audio transcription and text-to-speech
  - name: LLMs
    description: Access 40+ language models through a unified API
  - name: Search
    description: Web search, AI answers, and deep research
  - name: Mail
    description: Managed inboxes for agent email workflows
  - name: Media
    description: Transcript retrieval and captioned media clip generation
  - name: Legal
    description: Legal research tools including citation verification
  - name: Privilege
    description: Privilege detection for e-discovery and litigation workflows
  - name: Compute
    description: Serverless GPU and CPU infrastructure
  - name: Format
    description: Document formatting and template rendering (MD/JSON to PDF/DOCX)
  - name: SuperDoc
    description: Document conversion and template automation
  - name: Webhooks
    description: Webhook endpoint management
  - name: System
    description: Public system metadata and discovery endpoints
  - name: Usage
    description: Usage reporting and webhook subscriptions
  - name: Database
    description: Serverless PostgreSQL databases with instant branching
  - name: Translation
    description: Language detection and translation for multilingual legal workflows
  - name: Skills
    description: Search and read legal AI skills for agents
  - name: Agents
    description: >-
      Create, manage, and execute AI agents with tool access, sandbox
      environments, and async run workflows
  - name: Matters
    description: Matter-native legal workspaces and orchestration primitives
  - name: Connectors
    description: Import and export between provider folders (Google Drive) and vaults
  - name: Applications Projects
    description: Web application project management
  - name: Applications Deployments
    description: Web application deployment management
  - name: Applications Domains
    description: Custom domain configuration for applications
  - name: Applications Env Vars
    description: Environment variable management for applications
paths:
  /translate/v1/document:
    post:
      tags:
        - Translation
      summary: Translate a document
      description: >-
        Translate one TXT, DOCX, or searchable PDF document. DOCX and PDF
        translations preserve the source document format and retain as much
        layout and formatting as possible.
      operationId: translateDocument
      requestBody:
        required: true
        content:
          multipart/form-data:
            schema:
              type: object
              required:
                - file
                - target
              properties:
                file:
                  type: string
                  format: binary
                  description: TXT, DOCX, or searchable PDF document (max 20MB)
                target:
                  type: string
                  description: Target BCP-47 language code
                  example: es
                source:
                  type: string
                  description: >-
                    Optional source BCP-47 language code. Auto-detected when
                    omitted.
                  example: en
      responses:
        '200':
          description: Translated document in the source file format
          content:
            text/plain:
              schema:
                type: string
                format: binary
            application/vnd.openxmlformats-officedocument.wordprocessingml.document:
              schema:
                type: string
                format: binary
            application/pdf:
              schema:
                type: string
                format: binary
        '400':
          description: Invalid request or unsupported file type
        '401':
          description: Invalid API key
        '403':
          description: API key does not have translation access
        '413':
          description: File exceeds the 20MB limit
components:
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key
      description: API key starting with `sk_case_`

````