Free online tool

Image Watermark Tool

Preview a readable watermark at the final image resolution and export it locally.

Method

Advanced image processing method

The selected pixels are decoded into an HTML canvas, transformed at source resolution, and encoded into the chosen output format. Batch mode applies one bounded resize and quality policy to every selected file.

Solid-color background removal compares pixel color distance and is not semantic subject segmentation. Complex backgrounds, fine hair, transparency, metadata, and print workflows should be checked in a dedicated image editor.

Questions

Image Watermark Tool FAQ

Does a watermark prevent image copying?

No. It communicates attribution and can discourage casual reuse, but determined editors can often remove or crop a visible watermark.

Which output format preserves transparency?

PNG and WebP can preserve transparent pixels. JPG fills transparency because the format has no alpha channel.

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