Image Watermark Tool
Add text watermarks to your images with full control over font, color, opacity, rotation, and positioning. All processing happens in your browser.
About This Tool
The Image Watermark Tool lets you add text watermarks to any image directly in your browser. Whether you need to protect photographs from unauthorized use, brand proof sheets, or mark confidential documents, this tool gives you full creative control without uploading anything to a server.
All processing runs entirely on the client side using the HTML Canvas API. Your images never leave your machine -- no data is sent, stored, or logged anywhere. This makes it safe for sensitive or proprietary content.
You can customize every aspect of the watermark: choose the text, font family, font size, color, and opacity. Control the rotation angle from -180 to +180 degrees, and place the watermark in one of six positions -- center, any of the four corners, or tiled across the entire image. Tile mode repeats the watermark with adjustable spacing, making it hard to crop out.
Multiple watermarks are supported. Add as many as you need and switch between them using the numbered tabs. Each watermark is independently configurable. An optional semi-transparent overlay band can be enabled behind the text for improved readability on busy backgrounds.
The tool includes undo support, so you can safely experiment with settings and revert any change. When you are satisfied, download the result as PNG or JPEG with a quality slider. You can also copy the finished image directly to your clipboard.
If you work with images often, you may also find the Image Compressor, Image Resizer, and Image Effects & Filters tools useful.
How to Use
- Click the upload area or drag and drop an image file (PNG, JPEG, WebP, GIF, or BMP).
- The image appears on the canvas with a default watermark applied. Edit the watermark text in the Text field.
- Adjust Font Family, Font Size, Color, Opacity, and Rotation to customize the watermark appearance.
- Choose a Position preset: center, one of the four corners, or tile mode. In tile mode, adjust Tile Spacing to control density.
- Toggle Overlay Band to add a semi-transparent strip behind the text for readability.
- To add additional watermarks, click Add Watermark and configure each one independently using the numbered tabs.
- Use Undo (or Ctrl+Z) to revert any change. When finished, choose PNG or JPEG output, then click Download (or Ctrl+Enter). You can also click Copy (or Ctrl+Shift+C) to copy the image to your clipboard.
Popular Watermark Examples
FAQ
Is my data safe when adding watermarks?
Yes. All image processing happens entirely in your browser using the Canvas API. No data is uploaded, stored, or sent to any server. You can verify this by checking your browser's network tab while using the tool.
What image formats are supported?
You can upload any browser-supported image format including PNG, JPEG, WebP, GIF, and BMP. The output can be downloaded as either PNG (lossless) or JPEG (with adjustable quality).
Can I add multiple watermarks to one image?
Yes. Click the 'Add Watermark' button to create additional watermarks. Each watermark has its own text, font, color, opacity, rotation, and position settings. Switch between them using the numbered tabs.
What is tile mode?
Tile mode repeats the watermark text across the entire image in a grid pattern. You can control the spacing between repetitions. This makes it very difficult for someone to crop out the watermark, which is why it is commonly used for stock photo previews and proof sheets.
How do I make the watermark harder to remove?
Use tile mode to repeat the watermark across the entire image. Choose a moderate opacity (30-50%) so the watermark is visible but does not completely obscure the image. Diagonal rotation (-30 to -45 degrees) also makes removal more difficult since the text crosses natural image lines.
Can I undo changes?
Yes. The tool maintains a history of up to 20 changes. Click the Undo button or press Ctrl+Z (Cmd+Z on Mac) to step back through your changes.
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