**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.

選填，由使用者自訂的冪等鍵（最多 255 個字元）。設定後，成功（2xx）的回應會快取 7 天。以相同的鍵 + 相同的請求主體重試時，會回傳快取的回應（不另外扣除點數）；以相同的鍵但不同的請求主體重試，則回傳 409。可讓 POST 請求在網路故障時安全重試。對於 multipart/form-data 上傳，請求會依表單欄位與檔案內容比對，因此即使用戶端產生新的 multipart boundary，重試的上傳仍會重播先前的結果。

Idempotency-Key

image_url

image

相容用的來源圖片檔案欄位（已棄用：請改用 `image`）。

file

未上傳圖片時使用的來源圖片 URL

code

message

image_urls

data

請求主體格式錯誤或缺少必要參數

Idempotency-Key 已被用於不同的請求主體。

已達速率限制。請等待 `Retry-After` 標頭中指定的秒數後再重試。

自動偵測並移除浮水印、Logo 與印章，無需遮罩。僅限用於您擁有或有權編輯的圖片。

去除浮水印

輸入

輸出

相關 API