How to Watermark Photos in Your Browser

A watermark is a name, handle, or logo laid over an image so that anyone who sees the picture also sees who made it. Photographers, artists, and resellers use watermarks to discourage people from lifting images and passing them off as their own, and to keep attribution attached when a photo travels across social platforms.

A watermark is not perfect protection. A determined person can crop or clone it out, so the goal is deterrence and credit rather than an unbreakable lock. For high-value work, keep the original files safe and only publish watermarked, lower-resolution copies.

A text watermark is the simplest option: your name, username, or website typed directly onto the image. It is fast, scales cleanly, and works well when you just need visible credit. The Image Watermark tool focuses on text so you can add a mark to any photo without preparing a separate logo file.

A tiled watermark repeats your text across the whole image in a grid. Tiling is harder to remove because the mark covers the subject, but it is more intrusive, so it suits proofs and previews more than a finished portfolio piece. A single corner mark looks cleaner and is the better choice when you want the photo to stay presentable.

Position matters. A mark in a busy corner can vanish against the detail behind it, while a mark over a plain area stays readable but may distract from the subject. Nine anchor positions let you drop the text into any corner, edge, or the center depending on where the composition has room.

Opacity controls how much the watermark shows. A low opacity around 30 to 50 percent stays legible without dominating the picture, which is usually the sweet spot. Size should scale with the image so the mark reads the same on a thumbnail and a full-size view. Test a couple of combinations before you settle on one for a whole batch.

This tool runs entirely in your browser. Your photo is drawn onto a canvas locally, the watermark is composited on top, and the finished image is exported without ever being uploaded to a server. That means sensitive or unreleased images never leave your computer.

Because the work happens on your own machine, there is no queue, no account, and no file-size limit imposed by an upload. Larger images simply use more of your device memory while you work.

If you watermark many images, keep the text, font, position, and opacity the same across the set so your work looks like a coherent body rather than a collection of one-offs. Pick a color that contrasts with most of your photos, and add a subtle shadow or outline if your images vary between light and dark.

Export a watermarked copy rather than overwriting your master file. Store originals in one folder and watermarked shares in another so you always have a clean version to reprocess if you change your branding later.