Add Watermark

Overview

Protect your photos, brand assets, and stock images by overlaying a custom logo watermark — all rendered locally with the HTML5 Canvas API. Upload your main image, drop in a PNG logo, pick a corner or center position, and tweak opacity for a subtle or bold look. Your originals never leave your device.

Step-by-Step Guide

1. 1Upload your main image into the first drop zone.
2. 2Upload your watermark logo (PNG with transparency works best) into the second drop zone.
3. 3Pick a position preset (Top-Left, Top-Right, Center, Bottom-Left, Bottom-Right) and adjust the opacity slider.
4. 4Click Download Watermarked Image to save the finished PNG to your device.