Add a watermark to an image
Stamp text or a logo across your photos — one or a whole batch.
Drop your file here
It is processed on your device — nothing is uploaded.
Marking your work
Stamp text across one photo or forty. Position it in a corner, across the centre, or tiled over the whole image — and everything happens in your browser, so a batch of forty costs nothing and takes seconds.
Tiled watermarks are the ones that work
A single mark in a corner is removed with thirty seconds of cropping. A tiled watermark covers the whole picture, so removing it means reconstructing the image underneath. If the point is genuinely deterring reuse rather than signing your work, tile it.
The trade-off is that a tiled watermark is intrusive by design. Low opacity — 25% or so — keeps the photo viewable while still making removal a real effort.
The shadow matters more than it sounds
White text over a bright sky is invisible. Black text over a dark background is invisible. A soft shadow behind the text keeps it readable over both, which is why it is on by default — without it, a watermark that looks perfect on one photo disappears entirely on the next in the batch.
A watermark is not protection
Worth saying plainly. Anyone determined can clone-stamp a corner mark out, and inpainting models remove them increasingly well. A watermark deters casual reuse and identifies the source when an image travels; it does not prevent theft.
For genuine control over a document rather than a picture, encryption is the tool that actually restricts access.
Batches
Up to forty images with the same settings, returned as a zip. The originals are untouched.
Common questions
Where should I put the watermark?
A corner for signing your work. Tiled if the point is deterring reuse — a corner mark is croppable in seconds.
Why is the shadow on by default?
White text vanishes over a bright sky and black vanishes over a dark one. The shadow keeps it readable over both.
Can a watermark be removed?
Yes, by anyone determined — especially a corner mark. It deters casual reuse; it does not prevent theft.
How many images at once?
Up to forty, returned as a zip.
Are my photos uploaded?
No. Everything runs in your browser.