Name: Invisible Watermark – Embed Hidden Text | Free · $10/mo | API.market
Brand: ailabtools
SKU: api-ailabtools-image-invisible-text-watermark
Availability: InStock
Author: API Market

# 🕵️‍♂️ Image Invisible Text Watermark API

The **Image Invisible Text Watermark API** provides a secure, imperceptible way to embed or extract textual watermarks into or from digital images. Whether you're looking to protect ownership, trace unauthorized distribution, or embed invisible tags for digital forensics, this API offers robust functionality with multiple model versions for both encoding and decoding operations.

---
## Image Example 
| function_type      |    text    |         origin_image         |    watermark_image    | output_file |          watermark_image_url              |         text_image_url          |
|:------------------:|:----------:|:----------------------------:|:---------------------:|:----------------:|:--------------------------------------------:|:-------------------------------:|
| `encode_text`      | `AILabAPI` | ![origin image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/origin_image-1-min.jpg) | -                     | `jpg`            | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text-1-min.jpg) | -                              |
| `encode_text_plus` | `AILabAPI` | ![origin image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/origin_image-1-min.jpg) | -                     | `jpg`            | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text_plus-1-min.jpg) | -                              |
| `encode_text_bold` | `AILabAPI` | ![origin image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/origin_image-1-min.jpg) | -                     | `jpg`            | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text_bold-1-min.jpg) | -                              |
| `decode_text`      | -          | ![origin image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/origin_image-1-min.jpg) | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text-1-min.jpg) | -                | -                                          | ![text image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/text_image_url-encode_text-1-min.png) |
| `decode_text_plus` | -          | -                            | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text_plus-1-min.jpg) | -                | -                                          | ![text image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/text_image_url-encode_text_plus-1-min.png) |
| `decode_text_bold` | -          | -                            | ![watermark image url](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/watermark_image_url-encode_text_bold-1-min.jpg) | -                | -                                          | ![text image](https://img.ailabtools.com/rapidapi/AddBlindTextWatermark/text_image_url-encode_text_bold-1-min.png) |


## Features
-  **Invisible Watermarking**: Embeds text watermarks without affecting the visible quality of the image.
-  **Watermark Decoding**: Supports decoding from various watermarking models (legacy and advanced).
-  **Multi-Model Architecture**: Choose from standard, enhanced (`plus`), or high-strength (`bold`) watermarking/decoding techniques.
-  **Flexible Format Support**: Compatible with major image formats (JPG, PNG, BMP).
-  **JPEG Quality Control**: Configure output quality when exporting watermarked images in `.jpg`.

---

## Use-Cases
- **Digital Rights Management**: Securely tag images with copyright info.
- **Content Authenticity Tracking**: Embed traceable IDs or creator tags into images.
- **Brand Protection**: Add tamper-resistant signatures to promotional assets.
- **Forensic Marking**: Embed investigation IDs or hash values invisibly in photos.
- **Reverse Extraction**: Retrieve embedded data for verification or tracking purposes.

---

## API Documentation

### Endpoints
#### *` Encoding `*
**Request:**
```bash
curl -X 'POST' \
  'https://prod.api.market/api/v1/ailabtools/image-invisible-text-watermark/image/editing/add_blind_text_watermark_encode' \
  -H 'accept: application/json' \
  -H 'x-magicapi-key: <YOUR API MARKET KEY>' \
  -H 'Content-Type: multipart/form-data' \
  -F 'function_type=encode_text_plus' \
  -F 'origin_image=@image-1-min.jpg;type=image/jpeg' \
  -F 'text=logo' \
  -F 'output_file_type=jpg' \
  -F 'quality_factor=100'
```
**Response**
```json
{
  "data": {
    "watermark_image_url": "https://ai-result-001.ailabtools.com/image/addBlindTextWatermark/2025-04-09/124506-065617b3-d7a9-0f51-7aa8-0f10ecbd954a-1744173906.jpg"
  },
  "error_code": 0,
  "error_detail": {
    "status_code": 200,
    "code": "",
    "code_message": "",
    "message": ""
  },
  "log_id": "E32418C6-80D1-5449-8512-C30F95AE47CA",
  "request_id": "E32418C6-80D1-5449-8512-C30F95AE47CA"
}
```
#### *` Decoding `*
**Request:**
```bash
curl -X 'POST' \
  'https://prod.api.market/api/v1/ailabtools/image-invisible-text-watermark/image/editing/add_blind_text_watermark_decode' \
  -H 'accept: application/json' \
  -H 'x-magicapi-key: <YOUR API MARKET KEY>' \
  -H 'Content-Type: multipart/form-data' \
  -F 'function_type=decode_text_plus' \
  -F 'watermark_image=@image-1-min.jpg;type=image/jpeg'
```
**Response**
```json
{
  "data": {
    "text_image_url": "https://ai-result-001.ailabtools.com/image/addBlindTextWatermark/2025-04-09/125319-fbe13df1-41f6-ffb0-5fe9-13a596fda175-1744174399.png"
  },
  "error_code": 0,
  "error_detail": {
    "status_code": 200,
    "code": "",
    "code_message": "",
    "message": ""
  },
  "log_id": "413AF9B6-C879-5A24-BA3F-B0847D7F66A5",
  "request_id": "413AF9B6-C879-5A24-BA3F-B0847D7F66A5"
}
```
### 🔧 API Parameters

### Image Requirements

| Parameter        | Specification                                      |
|------------------|----------------------------------------------------|
| Formats          | JPEG, JPG, PNG, BMP                                |
| Max File Size    | 3 MB                                               |
| Resolution       | Between 5×5 px and 4096×4096 px                    |
| Channel Support  | RGB channels (3-channel)                           |

---

### Function Types

| Function Type         | Description                                                       |
|-----------------------|-------------------------------------------------------------------|
| `encode_text`         | Embed text watermark using legacy model.                         |
| `encode_text_plus`    | Embed text watermark using enhanced model (v1).                  |
| `encode_text_bold`    | Embed text watermark using bold model (v2, high robustness).     |
| `decode_text`         | Decode watermark using legacy model.                             |
| `decode_text_plus`    | Decode watermark using enhanced model (v1).                      |
| `decode_text_bold`    | Decode watermark using bold model (v2).                          |

---

### 📝 Request Body Parameters

#### Encoding 

| Field             | Required | Type     | Description                                               |
|-------------------|:--------:|----------|-----------------------------------------------------------|
| `function_type`   | Yes      | string   | One of `encode_text`, `encode_text_plus`, `encode_text_bold`. |
| `origin_image`    | Yes      | file     | The original image to embed the watermark into.           |
| `text`            | Yes      | string   | Text to be embedded invisibly.                            |
| `output_file_type`| No       | string   | `png`, `jpg`, or `bmp` (default is `png`).                |
| `quality_factor`  | No       | integer  | [1–100], applicable only if `output_file_type` is `jpg`.  |

---

#### Decoding 

#### `Legacy Model (decode_text)`
| Field           | Required | Type     | Description                                       |
|-----------------|:--------:|----------|---------------------------------------------------|
| `function_type` | Yes      | string   | `decode_text`                                     |
| `watermark_image`| Yes     | file     | Image containing the embedded watermark.          |
| `origin_image`  | Yes      | file     | Original image used before embedding.             |

#### `Plus / Bold Model (decode_text_plus, decode_text_bold)`
| Field           | Required | Type     | Description                                       |
|-----------------|:--------:|----------|---------------------------------------------------|
| `function_type` | Yes      | string   | `decode_text_plus` or `decode_text_bold`          |
| `watermark_image`| Yes     | file     | Image containing the embedded watermark.          |

---

## Status Codes & Error Handling

| Field         | Description                                                                          |
|---------------|--------------------------------------------------------------------------------------|
| `error_code`  | `0` for success; non-zero values indicate processing errors.                         |
| `error_msg`   | Describes the encountered error, if any.                                             |
| `status_code` | Standard HTTP codes: `200`, `400`, `413` (e.g., bad request, file too large).        |

## SEO Keywords
invisible watermark api, image text embedding api, image watermark encoder, text extraction from images api, image copyright api, AI watermark removal detector, secure image traceability, digital asset tracking API, imperceptible watermark generator

Embed invisible text watermarks in images to protect your IP and trace distribution. Free 10 calls/mo, from $10/mo. Try it free on API.market.

Invisible Watermark – Embed Hidden Text | Free · $10/mo | API.market

BASIC

AILabTools

ULTRA

MEGA

Embed invisible text watermarks into your images, providing a discreet but effective way to protect your intellectual property and prevent unauthorized use.