---
title: "Import Public Flow Presentation Diagram Image"
method: POST
path: "/v2/public/documents/presentations/{presentation_id}/images/diagram"
tags: ["presentations"]
---

# Import Public Flow Presentation Diagram Image

`POST /v2/public/documents/presentations/{presentation_id}/images/diagram`

## Request

- Base URL: `https://api.sanka.com`
- URL: `https://api.sanka.com/v2/public/documents/presentations/{presentation_id}/images/diagram`
- Auth: HTTP bearer
- TypeScript: <https://skmtc.dev/sankahq/apis/sanka-public-api/docs/v2/public/documents/presentations/:presentation_id/images/diagram/post.ts> (a function with typed inputs; its response is checked against the schema)

Store a Sanka diagram's latest image as an image of the presentation, for an image block
or accent. It stays as it is when the diagram changes; a `sankaDiagram` block follows it.

## Path parameters

- `presentation_id` string, required

## Query parameters

- `workspace_id` string, nullable

## Headers

- `X-Workspace-Code` string

## Request body

- PresentationDiagramImageRequest
  - `diagramId` string, required: A Sanka diagram in the same workspace; its latest revision is stored.
  - `alt` string, nullable: Defaults to the diagram's name.

## Response `201`

Successful Response

- ImportPublicPresentationDiagramImage201Envelope
  - `success` true, required
  - `data` PresentationImageData, required: An image stored with the presentation; use `assetId` in image blocks and accents.
    - `assetId` string, required
    - `contentType` string, required
    - `sizeBytes` integer, required
    - `width` integer, required
    - `height` integer, required
    - `alt` string, nullable
  - `meta` EnvelopeMeta, required
    - `ctx_id` string, required
    - `pagination` PaginationMeta
      - `page` integer, required
      - `page_size` integer, required
      - `total` integer, required
      - `next_cursor` string, nullable
    - `toast` ToastMessage
      - `variant` 'success' | 'error' | 'info' | 'warning', required
      - `code` string, required
      - `message` string, required
      - `i18n` ToastMessageI18n, required
        - `en` string, required
        - `ja` string, required

## Other responses

- `401`: Error response
- `403`: Error response
- `422`: Error response

## Changes

- **2026-10-18** `16f03a9e3ab9`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/sankahq/apis/sanka-public-api/changes/v2/public/documents/presentations/:presentation_id/images/diagram/post.md)

---

[API](https://skmtc.dev/sankahq/apis/sanka-public-api.md) - [All operations](https://skmtc.dev/sankahq/apis/sanka-public-api/llms.txt) - [OpenAPI document](https://skmtc.dev/sankahq/apis/sanka-public-api/revisions/16f03a9e3ab9?raw)