Image Watermark

Overlays text on an image in either single-position or tiled mode, then exports the result as a PNG. You control the text, font size (12-120px), color, opacity (0-100%), and rotation (-180 to 180). In single mode you pick one of nine anchor positions; in tiled mode the text repeats across the whole canvas. The font is fixed to sans-serif.

1. Click the drop zone or drag an image onto it. 2. Choose Mode (Single or Tiled) and type the watermark text. 3. Adjust font size, color, opacity, and rotation; in Single mode also pick a position. 4. Click Apply Watermark, then Download to save watermarked_<original-name>.

Tiled mode centers the rotation on the canvas and stamps text across an area sized to the image diagonal, with horizontal spacing based on text length and vertical spacing of 2.5x font size, ensuring full coverage even when rotated. The exported format is always PNG via canvas.toBlob, regardless of input.