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Read guide →Add Watermark
Add a text watermark to images instantly in your browser. Choose color, opacity, size, position, and style. Free, no upload, works with JPG, PNG, WebP.
Drop image(s) here or click to browse
Editor & live preview appear below once you add an image.
Reviewed 2026-07-12
Free Watermark Image – how it works
Watermark Image overlays a draggable text stamp on a photo or graphic entirely inside the browser. Choose from single-line, repeated tile, or diagonal stripe watermark styles. Position the text anywhere by dragging it on the live preview, or select a preset anchor position.
The watermark is composited onto a canvas copy of your image using the Canvas 2D API. No file is uploaded. The original image on your device is not modified — the watermarked version is a new download.
Common uses include protecting portfolio photographs from unauthorised use, branding product images before publishing, or adding a "SAMPLE" or "NOT FOR DISTRIBUTION" notice to draft graphics.
How to use Watermark Image online
- Upload your image. Drop a JPG, PNG, or WebP image into the tool. A live preview with draggable watermark controls appears.
- Set the watermark text and style. Enter the watermark text, choose a colour, opacity, font size, and style (single, tile, or diagonal). Drag the watermark on the preview to position it.
- Apply and download. Click Apply Watermark to produce the final image with the watermark embedded in the pixels, then download it.
When to use it
- Add a photographer's name or copyright notice to portfolio images before posting online.
- Brand product images with a company logo text before uploading to a marketplace.
- Add a "SAMPLE" watermark to design proofs sent to clients for approval.
- Tile a repeating copyright notice across a high-resolution image to deter cropping.
Known limitations
- The watermark is composited into the pixel data. It cannot be removed cleanly without the original image.
- Only text watermarks are supported. Image or logo watermarks are not currently available.
- Very large images may be slow to process on mobile devices with limited memory.
Frequently asked questions
Is Watermark Image free?
Yes, completely free. No account, no usage limits, and opentools adds no watermark of its own.
Are my images uploaded when I add a watermark?
No. Watermarking is performed in your browser using the Canvas API. Your image never leaves your device.
Can someone remove the watermark from the image?
The watermark is embedded in the pixel data, making it difficult but not impossible to remove with image editing software. Tiling or diagonal watermarks are harder to remove cleanly than a single corner stamp.
What image formats are supported?
JPG, PNG, and WebP are fully supported as both input and output.
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