---
title: "Upload Signature Image"
method: POST
path: "/api/sign/{token}/signature-image"
tags: ["signing"]
---

# Upload Signature Image

`POST /api/sign/{token}/signature-image`

## Request

- Base URL: `https://zsign.io` (the document declares no server; this is the origin it was published from)
- URL: `https://zsign.io/api/sign/{token}/signature-image`
- Auth: none declared

Store a hand-drawn signature or initials mark for this signer.

Called when the signer adopts their mark, not at completion: a flaky mobile
connection should fail here (retryable, with a spinner) rather than inside
the one request that must not fail.

## Path parameters

- `token` string, required

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/zsign/apis/zsign-api.md) · [All operations](https://skmtc.dev/zsign/apis/zsign-api/llms.txt) · [OpenAPI document](https://skmtc.dev/zsign/apis/zsign-api/revisions/a674ac4137ba?raw)