Add Watermark to Image

Add Watermark to Image stamps your name, brand, website or a copyright line across a photo so it stays attributed wherever it travels. Photographers use it on proofs, agencies on drafts sent for approval, and marketplaces on listing images to discourage scraping.

You control the text, font size, color, opacity and one of nine anchor positions, plus an optional tiled mode that repeats the mark diagonally across the whole frame — much harder to crop away. The watermark is drawn onto the pixels at full resolution, so it survives resizing, re-uploading and screenshotting.

Nothing you open here is uploaded. The entire operation runs inside your browser tab using the Canvas API and WebAssembly, which means there is no upload queue, no server-side file-size cap, no watermark and no account. You can even go offline after the page has loaded and the tool will keep working. When you close the tab, every trace of your file disappears from memory — which is exactly what you want when you are handling ID documents, contracts, private photos or unreleased product shots.

Because the work happens on your own hardware, processing is effectively instant for typical photos and still comfortable for 50-megapixel files on a modern laptop or phone. There are no daily limits, no paywalls after five files, and no queue behind other users. Everything is free, unlimited and ad-supported, and the layout reserves fixed space for ads so the page never jumps while you work.