Image Watermark Tool

What is it?

An image watermark tool lets you overlay text or a logo onto a photo to identify it as yours, protect it from unauthorized use, or brand it before sharing it online. Watermarking is standard practice for photographers, designers, content creators, and businesses that share visual content on websites, social media, portfolios, and client proofing systems. This tool handles both text watermarks and image watermarks entirely in your browser. For text watermarks, you type your message — a name, website URL, copyright notice, or any phrase — then control the font size, color, opacity, and rotation angle. For image watermarks, you upload a logo or PNG graphic and control its position, size, and transparency. In both cases, you choose from nine preset anchor positions (top-left, top-center, top-right, middle-left, center, middle-right, bottom-left, bottom-center, bottom-right) or fine-tune placement using offset sliders. The watermark is rendered on top of your image using the HTML5 Canvas API. No image data is ever sent to a server — everything is processed locally in your browser, making this tool completely private and fast regardless of the file size. The final result can be downloaded as a JPEG or PNG file.

How to use it

1. Click "Upload image" or drag and drop a JPEG, PNG or WebP photo onto the upload area.
2. Choose the watermark type: "Text" to overlay custom text, or "Image" to overlay a logo or PNG graphic.
3. For text watermarks: type your text, choose font size, color and opacity.
4. For image watermarks: upload your logo file, then set its size and opacity.
5. Select a position from the 9-point grid (e.g. bottom-right for the classic photo watermark placement).
6. Use the rotation slider if you want a diagonal or angled watermark.
7. Preview the result on your image and adjust any settings until satisfied.
8. Click "Download" to save the watermarked image as JPEG or PNG.

Why use this tool

Sharing images online without watermarks means losing control over how they are used and attributed. A watermark serves as both a deterrent against unauthorized use and a passive marketing tool — every time someone shares your watermarked photo, your name or brand is visible to the next viewer. Professional watermarking tools in photo editing software require launching a full application, learning an interface, and often involve a subscription. For most common use cases — adding your photography watermark before uploading to Instagram, stamping a proof image before sending it to a client, or branding product photos before listing them online — a fast browser-based tool is all you need. Since this tool processes everything on the Canvas API locally, you get instant results with no upload wait time, no file size limits imposed by a server, and no privacy concerns about your images being stored or processed by a third party. You can batch-watermark multiple images in the same session simply by uploading one image, downloading it, and uploading the next.

Frequently asked questions