Add Watermark to Image

Overlay a text watermark on your photo before sharing — free, instant, entirely on your device.

Why watermark a photo

A visible watermark makes it obvious who a photo belongs to before it's shared or reposted elsewhere — useful for portfolio previews, marketplace listings, or any image you're posting publicly but haven't licensed out yet. It won't stop someone determined to crop it out, but it does deter casual reuse and keeps your name attached as the image travels.

Making a watermark that protects without distracting

A watermark's job is to discourage unauthorized reuse while still letting the photo itself be the main attraction — that usually means placing it in a corner rather than dead center, and keeping opacity low enough to read as a signature rather than a stamp covering the image. Photographers, designers and small businesses commonly watermark preview images shared publicly, saving the clean, unmarked original for paying clients or final delivery.

Keep in mind a watermark is a deterrent, not a lock — someone determined enough can crop it out or edit around it. For work you need to protect more seriously, consider combining a subtle watermark with metadata or a licensing note, rather than relying on the watermark alone.

Everything renders in your browser

The watermark text is drawn directly onto your image using the Canvas API, with position and opacity updating live as you adjust them — so you can see exactly how visible the mark will be before committing to a final download. This is the same technique used to build the preview, meaning there's no discrepancy between what you see and what gets saved.

Because everything runs locally, you can watermark a whole set of photos one after another without any upload delay between them, which matters if you're preparing a full gallery of preview images at once.

Choosing text and placement

A short name, handle or copyright line tends to work better than a long sentence, since it stays readable at a small size without dominating the photo. Bottom corners are the conventional placement for a reason — they're easy to read, easy to ignore while viewing the image, and consistent with what most audiences already expect from a watermark.

Frequently asked questions