Technology, Photography, API

Add Watermark Text on Image Online with Picnie: A Detailed Guide

Picnie
04 Jul 2025

Introduction

Watermarking images is a powerful way to protect your visual content, assert ownership, and promote your brand. By adding a text watermark, you can embed copyright information, a logo, or a custom message directly onto an image. Picnie makes this process seamless with its robust API and no-code tool, allowing you to add customizable text watermarks to images online. With options to adjust font, position, color, opacity, and more, Picnie offers unparalleled flexibility for photographers, content creators, and businesses. In this comprehensive guide, we’ll explore how to use Picnie’s API to add text watermarks to images, the benefits of watermarking, and step-by-step instructions to get started.

This blog is ideal for anyone looking to safeguard their images, enhance brand visibility, or automate watermarking workflows while ensuring their content ranks highly on search engines.

What is a Text Watermark?

A text watermark is a visible overlay of text applied to an image, typically used to:

Protect Ownership: Indicate copyright or authorship (e.g., “© 2025 Picnie”).
Promote Branding: Display a company name, logo, or website URL.
Deter Unauthorized Use: Discourage others from using your images without permission.
Add Context: Include details like the date, location, or event name.

Watermarks can be customized for placement, style, and transparency to balance visibility and aesthetics. Picnie’s API and no-code tool make it easy to apply text watermarks with precise control over these attributes.

Why Use Picnie to Add Text Watermarks?

Picnie stands out as a premier solution for adding text watermarks to images online. Here’s why:

Powerful API: Developers can automate watermarking with a single POST request, integrating it into larger workflows.
No-Code Tool: Non-technical users can apply watermarks via an intuitive web interface.
Highly Customizable: Adjust font, position, color, opacity, rotation, and background for professional results.
Cloud-Based: Process images online without installing software, with results stored securely on AWS S3.
Fast and Scalable: Ideal for processing single images or large batches efficiently.

Whether you’re a photographer protecting your portfolio or a business branding marketing assets, Picnie’s watermarking tools are designed to meet your needs.

How to Add Text Watermarks to Images Using Picnie’s API

Picnie’s API enables you to add text watermarks to images programmatically with extensive customization options. Below is a detailed guide to using the API, including a sample request and response.

API Details

Endpoint: https://picnie.com/api/v1/add-watermark-text-on-image
Method: POST
Description: Adds a customizable text watermark to an image specified by its URL.
Authentication: Requires an API key in the Authorization header.

Parameters

Name	Type	Required	Description
project_id	String	Yes	The ID of the project to associate the image with.
image_url	String	Yes	The URL of the image to add the text watermark to.
watermark_text	String	Yes	The text to use as the watermark.
position	String	Yes	Watermark position (e.g., top-left, middle-center, bottom-right).
font_size	Integer	Yes	Font size of the watermark text in pixels.
font_path	String	Yes	Path to the font file (e.g., Anton-Regular.ttf).
font_color	String	Yes	Color of the watermark text in hexadecimal (e.g., #FF0000 for red).
opacity	Float	Yes	Opacity of the watermark text (0.0 to 1.0).
rotation	Integer	Yes	Rotation angle of the watermark text in degrees.
padding	Integer	Yes	Padding around the watermark text in pixels.
background_color	String	Yes	Background color of the watermark text in hexadecimal (e.g., #000000).
background_opacity	Float	Yes	Opacity of the watermark text background (0.0 to 1.0).

Sample Request

Here’s an example of how to use the API with curl:

curl -X POST "https://picnie.com/api/v1/add-watermark-text-on-image" \
-H "Authorization: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d '{
    "image_url": "https://picnie.com/assets/demo_phone.jpg",
    "project_id": "1867",
    "watermark_text": "© 2025 Picnie",
    "position": "bottom-right",
    "font_size": 32,
    "font_path": "Anton-Regular.ttf",
    "font_color": "#FF0000",
    "opacity": 0.8,
    "rotation": 45,
    "padding": 20,
    "background_color": "#000000",
    "background_opacity": 0.5
}'

Sample Response

Upon successful execution, the API returns a JSON response with the URL of the watermarked image:

{
    "error": false,
    "message": "Success",
    "url": "https://picnie.s3.ap-south-1.amazonaws.com/user_10/project_1867/wmt_5396_250628115604.jpg"
}

Steps to Use the API

Obtain an API Key: Sign up at picnie.com to get your API key.
Prepare Your Image: Ensure your image is accessible via a public URL (e.g., Picnie’s demo assets, AWS S3).
Construct the Request: Create a JSON payload with the watermark text and styling parameters.
Send the Request: Use tools like curl, Postman, or a programming language (e.g., Python, JavaScript) to send the POST request.
Retrieve the Watermarked Image: The response includes a URL to the image with the applied watermark, stored on Picnie’s AWS S3 servers.

Example in Python

For developers, here’s a Python script to add a text watermark using the requests library:

import requests

url = "https://picnie.com/api/v1/add-watermark-text-on-image"
headers = {
    "Authorization": "YOUR_API_KEY",
    "Content-Type": "application/json"
}
data = {
    "image_url": "https://picnie.com/assets/demo_phone.jpg",
    "project_id": "1867",
    "watermark_text": "© 2025 Picnie",
    "position": "bottom-right",
    "font_size": 32,
    "font_path": "Anton-Regular.ttf",
    "font_color": "#FF0000",
    "opacity": 0.8,
    "rotation": 45,
    "padding": 20,
    "background_color": "#000000",
    "background_opacity": 0.5
}

response = requests.post(url, json=data, headers=headers)
print(response.json())

Using Picnie’s No-Code Tool

For users who prefer a graphical interface, Picnie’s no-code tool simplifies the watermarking process. Here’s how to use it:

Visit Picnie’s Website: Go to picnie.com and log in or sign up.
Upload Your Image: Select the image from your device or provide a URL.
Configure the Watermark: Enter the watermark text and customize the font, position, color, opacity, rotation, padding, and background.
Preview and Apply: Preview the watermark on the image and adjust as needed, then click “Add Watermark.”
Download or Share: Receive a link to the watermarked image, ready for download or sharing.

This tool is perfect for photographers, marketers, or small business owners who want to add watermarks without coding.

Benefits of Adding Text Watermarks

Applying text watermarks to images offers numerous advantages:

Content Protection: Deters unauthorized use by clearly marking ownership.
Brand Visibility: Promotes your brand or website with every image shared.
Professionalism: Adds a polished, professional touch to your visual content.
SEO Boost: Watermarks with keywords or brand names can improve image discoverability.
Automation: Picnie’s API enables bulk watermarking, saving time for large image collections.

Best Practices for Watermarking Images

To create effective and visually appealing watermarks, follow these tips:

Balance Visibility and Aesthetics: Use opacity and background settings to make the watermark noticeable without overpowering the image.
Choose Strategic Placement: Position watermarks (e.g., bottom-right) to minimize interference with the image’s main content.
Use Professional Fonts: Select clear, readable fonts like Anton-Regular.ttf for a polished look.
Incorporate Branding: Include your brand name, logo, or website URL to maximize exposure.
Test Across Images: Preview watermarks on different image types to ensure consistency and readability.