Add Watermark

Add Watermark is a free browser-based tool that helps you add text watermarks with customizable font, opacity, color, rotation, and tiled placement. It is part of ToolsMonk's image tools collection, so you can finish the job without downloading software, creating an account, or jumping between multiple websites.

This tool is especially useful for workflows such as watermarking photos before posting them online, adding a brand, name, or url to images, and marking proofs or samples as not-for-use. Because it runs directly in your browser, you can use it on desktop, tablet, or mobile while keeping the process fast and easy for one-off tasks as well as repeat work.

Add Watermark is also a strong fit for people searching for watermark image, add watermark, and protect photos, because it combines a simple interface with instant results and privacy-friendly processing.

Image Watermark adds a customisable text watermark to your photos — controlling font, size, opacity, colour, rotation, and placement — to assert ownership and deter unauthorised reuse before you share them.

It's worth being realistic about what a watermark achieves: it deters casual copying and signals ownership, but a small corner mark can be cropped or edited out by someone determined. The defence scales with how you apply it — a larger, semi-transparent, or tiled mark across the image is much harder to remove cleanly, which is why proofs, samples, and stock previews use tiling.

Opacity is the key balance, with around 30–50% usually right: visible enough to protect, faint enough not to ruin the image. Too faint invites removal; too opaque obscures the photo you're trying to showcase.

Watermarking runs in your browser, so your photos — often unpublished work you're protecting — stay on your device, and ToolsMonk adds no mark of its own. Keep an unwatermarked master copy of your originals. Pair it with Resize and Compress to prepare images for sharing.