Image Watermark Tool – Add Text or Logo Watermark to Images Online

About Image Watermark Tool

The Image Watermark Tool allows you to watermark images online by adding either a text watermark or an image (logo) watermark. You can upload multiple images, customize watermark settings such as size, opacity, rotation, and position, preview the watermark before processing, and download individual images or all watermarked images as a ZIP file.

This tool is designed for photographers, designers, developers, content creators, and anyone who needs to protect or brand their images quickly and efficiently.

What Is an Image Watermark?

A watermark is a visible overlay placed on an image to:

• Protect ownership

• Add branding (logo or name)

• Prevent unauthorized use

• Mark preview images

• Identify copyright

Watermarks can be text-based (e.g., your name or brand) or image-based (e.g., a logo).

Supported Image Formats

This tool supports the following formats:

• PNG (.png)

• JPG / JPEG (.jpg, .jpeg)

• BMP (.bmp)

• WEBP (.webp)

• TIFF / TIF (.tiff, .tif)

• SVG (.svg)

• HEIC / HEIF (if server support is enabled)

• AVIF (if server support is enabled)

If SVG files are uploaded, they are automatically converted to PNG format before watermarking.

Key Features of This Image Watermark Tool

Add text watermark to images
Add logo watermark to images
Watermark multiple images at once (batch processing)
Drag & drop image upload
Live watermark preview before processing
Adjustable opacity, rotation, and position
9 predefined watermark positions
Download individual watermarked images
Download all watermarked images as ZIP
Automatic output file naming
Support for modern formats including WEBP and SVG

How to Use the Image Watermark Tool (Step-by-Step)

Step 1: Upload Your Images

At the top of the page, you will see the Upload Area.

You can:

• Drag and drop your images into the drop area

• Or click “Select Images” to browse from your device

Once uploaded, images appear in the uploaded files list with:

• File name

• File size

• Remove (X) button to delete an image before processing

You can upload multiple images at once.

Watermark Options – Complete UI Explanation

Below the upload area is the Watermark Options panel.

This is where you control how your watermark looks.

Watermark Type Dropdown

You can choose between:

• Text

• Image

Selecting an option automatically shows its related settings.

Text Watermark Options

If “Text” is selected, the following controls appear:

Text Field

Enter the watermark text (default: “Watermark”).

Size

Controls the font size of the watermark text.

Color

Select watermark color using a color picker.

Opacity Slider

Controls transparency level from 10% to 100%.

Lower opacity makes watermark lighter.

Rotation

Set watermark angle between -360° and 360°.

Position Dropdown

Choose from 9 preset positions:

• Top Left

• Top Center

• Top Right

• Center Left

• Center

• Center Right

• Bottom Left

• Bottom Center

• Bottom Right

The watermark is automatically positioned based on your selection.

Image Watermark Options

If “Image” is selected, these controls appear:

Upload Watermark Image

Upload a logo or transparent PNG.

Watermark Image Preview

Displays selected watermark image before processing.

Scale Slider

Controls watermark size (10% to 100%).

Opacity Slider

Controls transparency of watermark image.

Rotation

Rotate watermark image between -360° and 360°.

Position Dropdown

Choose where the logo appears (same 9 positions).

Preview Watermark Feature

The “Preview Watermark” button shows a live preview using a sample canvas.

This preview:

• Demonstrates position

• Demonstrates opacity

• Demonstrates rotation

• Demonstrates scale (for image watermark)

Important:
Preview does not modify your actual uploaded images.
It is only a visual demonstration before processing.

Add Watermark Button

When you click “Add Watermark”:

1. All uploaded images are sent for processing.

2. The watermark is applied to each image.

3. The result section appears with downloadable files.

During processing, the button changes to “Processing…”.

Output & Download Options

After processing:

• Each image is renamed automatically:

  originalname_watermarked.extension

• Each image has a Download button.

• You can also click “Download All” to download all watermarked images as a ZIP file.

How Watermarking Works Internally

When processing begins:

1. Images are converted to RGBA mode (to support transparency).

2. A transparent overlay layer is created.

3. Watermark (text or image) is applied to the overlay.

4. Overlay is combined with the original image.

5. Final image is saved in its original format (with special handling for JPEG and BMP).

If SVG is uploaded:

• It is converted to PNG before watermarking.

• Final output is saved as PNG.

Batch Watermark Processing

This tool supports watermarking multiple images at once.

You can:

• Upload several images

• Apply one watermark configuration

• Process all images together

• Download individually or as ZIP

Data Security & Automatic Deletion

Your privacy and data security are important.

Uploaded images are stored temporarily.
Watermarked images are generated temporarily.
All files are automatically deleted from the server after approximately 1 hour.

Your images are not permanently stored.

Why Use This Online Watermark Tool?

• No software installation required

• Works directly in your browser

• Supports modern image formats

• Easy to use interface

• Full control over watermark appearance

• Batch processing with ZIP download

• Secure temporary file handling

The Image Watermark Tool provides a powerful and flexible way to watermark images online. Whether you need to add a text watermark or a logo watermark, adjust opacity, rotation, and position, or process multiple images in batch, this tool gives you full control with a simple and responsive interface.

Upload your images, customize your watermark, preview it, and download your watermarked images instantly.