100% Private (Local Processing)
Watermark Images Online
Add a custom text or logo watermark overlay to your images.
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How to use Image Watermark
- 1
Upload the base image you want to watermark.
- 2
Type your custom watermark text in the text input.
- 3
Adjust text color, font size, angle, and opacity using the controls.
- 4
Select placement style (Center Stamp or Tile Pattern) and download the marked image.
Capabilities
- Custom text watermarks stamped client-side
- Two placement styles: centered overlay or full-page tiled watermark pattern
- Responsive font scaling adjustments
- Adjustable opacity sliders for text overlay blends
- Clean download as JPG or transparent PNG
Privacy & Processing
This tool operates in a sandbox directly inside your web browser. All parsing, processing, and downloads are rendered locally. Your file size, metadata, and contents never cross the network. It works completely offline.
Frequently Asked Questions
Is my watermarked image saved anywhere?
No. The watermarking happens entirely in your local canvas memory and is cleared as soon as you close or reset the page.