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Add text or logo watermarks to JPG, PNG, and WebP files locally.
Lower values make the watermark more subtle.
Applies to JPG and WebP outputs.
Percent of the image width used by the mark.
Add watermarks to images before publishing, sending proofs, sharing drafts, or uploading product photos. A visible watermark can show ownership, approval state, brand identity, copyright, or internal status.
This image watermark tool supports text marks, logo overlays, corner placement, centered marks, and tiled patterns. Batch processing helps when you need to protect multiple photos, screenshots, design previews, or marketplace images at once.
Everything runs in your browser using Canvas, so your original images do not need to leave your device.
Adjust opacity and watermark size so the mark is visible without hiding the subject. Corner placement suits logos and attribution, centered placement is useful for proofs, and tiling makes removal more difficult across a large image. PNG and WebP can preserve transparency; JPG uses an opaque output.
Watermarks discourage casual reuse but do not provide cryptographic ownership proof. Keep the original files and apply marks to copies intended for sharing. Review the first processed image before downloading a larger batch.