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Add a Watermark to a Photo, Without Uploading It Anywhere

Sending a proof, a scan or a portfolio piece to someone who should not reuse it? Put your mark on it first — right here, on your own device. The watermarked copy is built in your browser and saved straight back to your phone or laptop.

JPG, PNG or WEBP · up to 20 at once

Nothing uploadedNo sign-upNo watermarkHow that works

How to add a watermark to a photo, without uploading it anywhere

  1. Tap Choose a photo and pick the picture you want protected.
  2. Type the watermark text — your name, CONFIDENTIAL, DRAFT, a date.
  3. Choose diagonal tiles across the whole image or one line in the corner.
  4. Set how strong the mark sits, then press Add the watermark.
  5. Save the result. Its name ends in -watermarked, so it never replaces the original.

A mark that survives forwarding

The default look is the classic proof stamp: mid-grey type at about a third strength, repeated diagonally so no crop can quietly remove it. Someone who wants to strip the mark has to retouch every tile by hand, which is exactly the friction you want between your file and someone else’s feed. Prefer one clear line in the bottom-right corner for title images and certificates — that layout is one tap away.

Size and strength are yours to set. The size dial is a percentage of the picture, so the same setting reads correctly on a thumbnail and on a full-resolution photo; the strength dial starts faint because a stamp that hides the picture defeats its own purpose.

Your photo stays on your device

Every other watermark site asks you to hand your picture to a stranger’s server first — the one file you most want marked is the one you have uploaded to somebody else. This page works differently: the browser you are reading this in does all of the work, and nothing is sent anywhere. Turn your Wi-Fi off after the page loads and it still runs.

That also makes it fast. There is no queue, no upload bar and no download step; the result appears as soon as your device can draw it, and a batch of twenty photos costs exactly as long as drawing twenty pictures takes locally.

What comes back

The output keeps your picture’s dimensions exactly, in the format you asked for — keep-the-original by default, or JPG, PNG or WebP when you need one. One honest note under the result says that letterforms come from your device’s own fonts: position, size and spacing are exact everywhere, while the exact shape of a letter can differ slightly from what your client sees on theirs.

Questions

Is my photo uploaded when I watermark it?
No. The page draws the watermark inside your own browser tab and hands you the finished file from memory. There is no server involved at any point, which is why the page keeps working offline once it has loaded.
Can someone remove my watermark later?
A determined editor with time and tools can remove almost any mark, and anyone who claims unbreakable protection is selling something. What a tiled watermark does well is raise the effort past the point of casual reuse: every tile must be retouched individually, and the fainter you set the mark the harder that gets.
Which text should I use?
For proofs and drafts, the word itself — CONFIDENTIAL or DRAFT — reads instantly and needs no explanation. For portfolio work your name or handle marks ownership without hiding the picture. Dates work well for documents whose validity matters.
Will the watermark cover the whole photo evenly?
Yes. Tiles are laid on a lattice sized from the text itself, rotated a steady thirty degrees, and generated wide enough that every corner of any shape of picture — wide landscape or tall phone screenshot — is covered the same way.
Does watermarking reduce my image quality?
Barely, and only where the encoder works: keeping the original format re-encodes at high quality by default. If you need the pixels untouched and can accept a bigger file, choose PNG as the output format — lossless, so only the mark itself changes what you see.

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