⭐ Starlight Tools / Image Watermark Tool

Add Text or Logo Watermarks to Images

Everything runs in your browser for privacy. Upload a photo, choose Text or Logo, adjust settings, and download.

Preview

Controls

Supported: PNG, JPEG, WebP, SVG (rasterized by the browser).
Tip: choose “Free (drag)” to position the watermark with your mouse/touch.
Repeat watermark

Drag the watermark on the canvas when “Free (drag)” is selected. Keyboard: arrows move 1px (Shift+arrows = 10px).

About this tool

This watermark tool works entirely on your device using the HTML5 canvas API—no uploads, no tracking of your images. It supports text or logo watermarks, corner or free placement, tiling patterns, and common export formats.

Frequently Asked Questions

What image formats can I export?

PNG (lossless), JPEG, or WebP. For transparency, use PNG or WebP.

Can I tile watermarks diagonally?

Yes—set a rotation (e.g., 30°) and enable Tiling. Adjust spacing to taste.

Is my data private?

Yes. This tool runs entirely in your browser; your images never leave your device.