---
title: "Download a blob subelement from the specified app element."
method: GET
path: "/appelements/d/{did}/{vm}/{vmid}/e/{eid}/blob/{bid}"
tags: ["AppElement"]
---

# Download a blob subelement from the specified app element.

`GET /appelements/d/{did}/{vm}/{vmid}/e/{eid}/blob/{bid}`

## Request

- Base URL: `https://api.onshape.com/api/v17`
- URL: `https://api.onshape.com/api/v17/appelements/d/{did}/{vm}/{vmid}/e/{eid}/blob/{bid}`
- Auth: OAuth 2 and HTTP basic
  - Authorization code: `/oauth/authorize`
  - Token URL: `/oauth/token` scopes: `OAuth2Read`

Download a blob subelement as a file.

## Path parameters

- `did` string, required
- `vm` string, required
- `vmid` string, required
- `eid` string, required
- `bid` string, required

## Query parameters

- `contentDisposition` string
- `transactionId` string
- `changeId` string
- `linkDocumentId` string

## Headers

- `If-None-Match` string

## Response `default`

File download.

---

[API](https://skmtc.dev/onshape/apis/onshape-rest-api.md) - [All operations](https://skmtc.dev/onshape/apis/onshape-rest-api/llms.txt) - [OpenAPI document](https://skmtc.dev/onshape/apis/onshape-rest-api/revisions/c5c4c780f831?raw)