No. All processing happens in your browser using WebAssembly. Your images never leave your device.

Yes. Use the opacity slider to make the watermark more or less visible. Lower opacity is subtle; higher opacity is more prominent.

The watermark is embedded into the image pixels. It cannot be easily removed, which is the purpose of watermarking for protection.

Yes. Upload multiple images and the same watermark text and opacity will be applied to all of them.

The watermark is applied as a centered overlay. Adjust the opacity slider to control how visible or subtle the watermark appears.

Yes. Text watermarks are permanently embedded into the image pixels. They cannot be removed by screenshotting or basic image editing.

Yes. Upload multiple images and the same watermark text and opacity settings will be applied to all of them.

Yes. The tool runs entirely in your browser on any device — smartphones, tablets, and computers. No app needed.