Watermark Image
Add text or image watermarks to your photos. Configure position, opacity, rotation, and tile mode. Live preview included. Entirely in your browser — no uploads, no accounts.
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Supports JPG, PNG, WebP, GIF, BMP - up to 50 MB
Why use this tool?
Text or image watermarks
Add text like "CONFIDENTIAL" or "SAMPLE", or overlay your logo or stamp on any image. Supports JPG, PNG, WebP, GIF, and BMP.
Live preview & tile mode
See your watermark on the image in real time before applying. Enable tile mode to repeat the watermark across the entire image.
100% browser-based
Your images never leave your device. Everything runs locally using the Canvas API. No server uploads, no accounts, completely free.
Full customization
Control position, opacity, rotation, font size, and color for text watermarks. Adjust scale and rotation for image watermarks.
How image watermarking works
Upload your image, choose between text or image watermark, and configure the settings. Text watermarks let you add phrases like “CONFIDENTIAL” or “SAMPLE” with customizable font size, color, opacity, rotation, and position.
Image watermarks let you overlay a logo, stamp, or signature. Adjust the scale and opacity to make it subtle or prominent, and choose where to place it. Enable tile mode to repeat the watermark in a grid pattern across the entire image.
A live canvas preview updates in real time as you adjust settings, so you can see exactly how the watermark will look before applying. The final result is generated entirely in your browser using the Canvas API — your files are never uploaded to a server.
Frequently asked questions
What image formats are supported?
You can watermark JPG, PNG, WebP, GIF, and BMP images. GIF and BMP inputs are automatically converted to PNG output since the Canvas API cannot write those formats natively.
What is the difference between text and image watermarks?
Text watermarks let you add phrases like "CONFIDENTIAL" or "DRAFT" with customizable font size, color, opacity, and rotation. Image watermarks let you overlay a logo, stamp, or signature with adjustable scale, opacity, and rotation.
Does watermarking reduce image quality?
JPEG and WebP images are saved at 92% quality to maintain a good balance between file size and visual quality. PNG images are saved losslessly, so there is no quality loss.
What does tile mode do?
Tile mode repeats the watermark in a grid pattern across the entire image. This is useful for protecting images from unauthorized use. The grid is automatically calculated to ensure even coverage.