Watermark Tool
ImageAdd text or logo watermarks to images and batches locally.
Watermark Tool stamps text or a logo across your images so they can be shared without being quietly reused. Position the mark, set its size, opacity and rotation, and tile it across the frame if you want it hard to crop out. Everything is drawn on a canvas in your own browser, which means you can watermark client proofs, unreleased artwork and personal photos without uploading the very files you're trying to protect.
Why use Watermark Tool
100% private
Your image files are processed locally and never uploaded.
Instant
No upload or download wait — it runs at the speed of your device.
Free to start
Use it free every day; go Pro for unlimited runs.
No install
Works in any modern browser. No sign-up to begin.
How to use Watermark Tool
- 1Load the image and your mark
Add the photo, then type your text or upload a logo to stamp on it.
- 2Place and style it
Pick one of nine positions, set size, opacity, colour, outline and rotation — or switch to tiled to repeat it across the whole frame.
- 3Export the marked copy
Download the watermarked image; the original on your disk is untouched.
Frequently asked questions
Can I use my logo instead of text?
Yes — upload a PNG (transparency is preserved) and place it as the mark instead of, or as well as, typed text. Size, opacity, rotation and position are all adjustable, so a logo can sit discreetly in a corner or dominate the frame.
How do I make a watermark that's hard to crop out?
Switch from a single mark to tiled: the watermark repeats across the whole image, with an optional stagger so alternate rows are offset. Cropping then removes some copies but not all — far more robust than one mark in a corner.
Does the watermark scale with the image?
Yes. Size, margins and tiling spacing are all relative to the image's dimensions, so the same settings look right on a 1000px thumbnail and a 6000px photo — you don't have to re-tune everything per file.
Are my photos uploaded to be watermarked?
No — which is rather the point. Uploading the very images you're trying to protect to a stranger's server defeats the purpose. Everything is drawn on a canvas in your browser and the original on your disk is never modified.