# app.didpic.write.uploadBlob

> Published by [lexicons.didpic.app](https://lexicon.garden/identity/did:plc:an2jtp4jgkkbtmwfzhpbxawd)

✓ This is the authoritative definition for this NSID.

## Links

- [View on Lexicon Garden](https://lexicon.garden/lexicon/did:plc:an2jtp4jgkkbtmwfzhpbxawd/app.didpic.write.uploadBlob)
- [Documentation](https://lexicon.garden/lexicon/did:plc:an2jtp4jgkkbtmwfzhpbxawd/app.didpic.write.uploadBlob/docs)
- [Examples](https://lexicon.garden/lexicon/did:plc:an2jtp4jgkkbtmwfzhpbxawd/app.didpic.write.uploadBlob/examples)

## Definitions

### `app.didpic.write.uploadBlob`

**Type**: `procedure`

Upload raw image bytes to the authenticated viewer's own PDS, mediated by the AppView using its server-held session (confidential OAuth client only). Mirrors com.atproto.repo.uploadBlob. The returned blob ref is passed into createPost, createComment, or putProfile to attach it to a record. This endpoint applies no per-context size limit beyond a generous ceiling — the PDS enforces the real limit (post/comment 5MB, avatar 1MB, banner 2MB) when the blob is actually attached to a record.

#### Input

**Encoding**: `*/*`

#### Output

**Encoding**: `application/json`

| Property | Type | Required | Description |
|----------|------|----------|-------------|
| `blob` | `blob` | Yes |  |

## Raw Schema

```json
{
  "$type": "com.atproto.lexicon.schema",
  "defs": {
    "main": {
      "description": "Upload raw image bytes to the authenticated viewer's own PDS, mediated by the AppView using its server-held session (confidential OAuth client only). Mirrors com.atproto.repo.uploadBlob. The returned blob ref is passed into createPost, createComment, or putProfile to attach it to a record. This endpoint applies no per-context size limit beyond a generous ceiling — the PDS enforces the real limit (post/comment 5MB, avatar 1MB, banner 2MB) when the blob is actually attached to a record.",
      "input": {
        "encoding": "*/*"
      },
      "output": {
        "encoding": "application/json",
        "schema": {
          "properties": {
            "blob": {
              "accept": [
                "image/png",
                "image/jpeg",
                "image/webp"
              ],
              "maxSize": 5000000,
              "type": "blob"
            }
          },
          "required": [
            "blob"
          ],
          "type": "object"
        }
      },
      "type": "procedure"
    }
  },
  "id": "app.didpic.write.uploadBlob",
  "lexicon": 1
}
```