How to use Watermark Image
- Choose or enter a supported source.
- Review controls and format limitations.
- Download the locally generated result.
Watermark Image
Add a text or logo watermark with opacity, placement, padding, scale, and rotation controls.
Add a text or logo watermark with opacity, placement, padding, scale, and rotation controls. Processing stays on your device and the original remains unchanged.
How OpenFileTools processes it
Local processing, explicit choices.
The source is validated and processed in this browser tab. Large format codecs are loaded only on the relevant page; no image bytes are uploaded.
Quick technical summary
What this tool changes.
| Property | Behavior |
|---|---|
| Processing | Browser only; no image upload |
| Original | Never changed |
| Watermark | Text or image/logo |
| Output | Same as input, JPG, PNG, or WebP |
Text or logo watermark in one final encode
Choose text or upload a logo, then control opacity, nine-position placement, padding, scale or font styling, and rotation. The source is rendered once and the completed image is encoded once.
- PNG and WebP can preserve transparency.
- JPG explicitly flattens transparency.
- Watermark removal is not offered.
Questions, answered.
Can I add a logo?
Yes. PNG, JPG, and WebP logo images are accepted.