Image Watermark
Add a text or image watermark to photos online for free. Set position, font, size, color, and opacity. Preview updates live. Downloads as PNG.
About Image Watermark
Protect your photos or add a branded overlay using our free online image watermark tool. Upload your image, then choose between Text mode and Image mode. In Text mode, type your watermark text and customise the font family, size (12–144px), colour, and opacity. In Image mode, upload a logo or stamp image (up to 2 MB), set its size as a percentage of the base image width, and adjust its opacity. Both modes share a nine-point position grid — place your watermark in any corner, along any edge, or in the centre with a single click. The canvas preview refreshes instantly as you change any setting. When you are happy with the result, click Download PNG to save the composited image. The output is always saved as PNG to preserve transparency and ensure consistent results regardless of the input format. All processing runs locally in your browser using the Canvas API. Nothing is uploaded to any server. The tool works with any image format your browser can decode, including JPG, PNG, WebP, GIF, and BMP.
Frequently Asked Questions
- What is the difference between text and image mode?
- Text mode lets you type a custom watermark string and style it with font, size, colour, and opacity. Image mode lets you upload a logo or badge file and overlay it on the base image at a chosen size and opacity.
- Why does the tool always download as PNG?
- PNG preserves transparency, which is important for text watermarks with transparent backgrounds. It also ensures a consistent output format regardless of what format was uploaded.
- How do I control how visible the watermark is?
- Use the Opacity slider in either mode. 100% means fully opaque; 0% means invisible. A value around 30–50% produces a subtle, professional-looking watermark.