**Cost**: 5 credits per successful call.

Image Watermark Remove supports two input modes:

1. **JSON URL mode**: send `application/json` with the existing URL field.
2. **Direct upload mode**: send `multipart/form-data` with a local image file in the `image` field. The compatible field name `file` is also accepted for the primary image. Codia checks credits before reading and uploading the file, so insufficient-credit requests return `402` without uploading anything.

Direct upload example:

```bash
curl 'https://openapi.codia.ai/v2/open/image/watermark_remove' \
  -H 'Authorization: Bearer {codia_api_key}' \
  -F 'image=@./image.png'
```

Detect and remove visible watermarks from an image — text overlays, logos, repeated patterns, corner stamps. Auto-detection (no mask required). Synchronous.

> ⚠️ **Use responsibly.** Only call this endpoint on images you own or have explicit permission to edit. Removing watermarks from third-party content may violate copyright or terms of service.

## What this API is for

Recovering pre-watermarked archive footage, removing automatic camera stamps from your own captures, cleaning up assets where you hold the rights but only have the watermarked export. Not for laundering stock photography or competitor content.

## Request

| Field | Required | Notes |
|---|---|---|
| `image_url` | yes | Public URL of the watermarked image. |

No `model` parameter — detection is automatic.

## Response

Shared `ImageUrlListSuccess` — `data.image_urls` carries one URL of the cleaned image. If no watermark is detected, the original image (or a near-identity copy) is returned.

## Billing & limits

- 5 credits per request from the unified Codia Open API balance.
- Synchronous.

## Errors

Standard set.

> **Sync vs. async**
> This synchronous endpoint returns the result inline — the simplest path. For production pipelines that need webhook delivery, automatic retry with idempotency, or explicit task cancellation, call `POST /v2/open/tasks` with `operation=image_watermark_remove` instead. Inputs and credit cost are identical.

可选，由用户自定义的幂等键（最多 255 个字符）。设置后，成功（2xx）的响应会缓存 7 天。使用相同的键 + 相同的请求体重试，会返回缓存的响应（不额外扣除积分）；使用相同的键但不同的请求体重试，则返回 409。用于确保 POST 请求在网络故障时可以安全重试。对于 multipart/form-data 上传，请求会按表单字段和文件内容进行比较，因此即使客户端生成了新的 multipart boundary，重试的上传也会被重放。

Idempotency-Key

image_url

image

兼容用的源图片文件字段（已弃用：请改用 `image`）。

file

code

message

image_urls

data

请求体格式错误或缺少必填参数

Idempotency-Key 已被用于不同的请求体。

请求频率超限。请等待 `Retry-After` 响应头中指定的秒数后再重试。

自动检测并移除水印、Logo 和印章，无需遮罩。仅可用于你拥有或有权编辑的图片。

去水印

输入

输出

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