Can I use a logo image as the watermark?

No — this tool stamps text only, drawn with the canvas text API.

Why is the position grid disabled?

Position applies to Single mode. In Tiled mode the text covers the whole image, so there is nothing to position.

No. Compositing happens on a canvas in your browser.

Not by this tool — it is part of the pixels. Always keep an unwatermarked original.

Image Tools100% Private · In-Browser

Stamp a text watermark once in any of nine positions or tile it diagonally across the whole photo — rendered entirely on your device.

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Text watermark up to 80 characters with a live full-resolution preview.
Single mode places one stamp via a 3×3 position grid; Tiled mode repeats it diagonally across the frame.
Font size 12–200px, opacity 10–100% and rotation from −45° to +45°.
Any text color via the picker, with a subtle drop shadow for legibility on busy photos.
Tiled spacing is adjustable (40–400px) for stock-photo-style protection.

Load A Photo
Drop the image you want to protect.
Type Your Watermark
A copyright line, name or handle — then choose Single or Tiled layout.
Style It
Tune size, opacity, rotation and color; place it with the position grid in Single mode.
Download The Watermarked PNG
The text is baked into the exported pixels exactly as previewed.

Around 30–50% opacity is visible without ruining the photo.
Tiled mode with roughly 45° rotation is the classic deterrent across the whole frame.
The watermark is permanent once exported — keep your original file safe.

Image, PDF, text, calculator and media utilities — all free, all private, all running right in your browser.