ImageAdjustable qualityRuns in your browser

Watermark Image

Stamp your name across a photo before you send it anywhere. Some detail is discarded to fit the target format; how much depends on the format and your settings.

Not uploaded to any serverConverted on this deviceGone when you close the tabHow this works

Drop your files here

JPG, PNG, WebP, AVIF and 5 more formats · up to 80.0 MB each

or paste files from your clipboard

Ready when you are

Stamp your name across a photo before you send it anywhere. Everything happens in this tab; nothing is sent anywhere.

⌘K to search converters

How to use it

1
Add your files
Watermark Image works with JPG, PNG, WebP, AVIF, TIFF, BMP, HEIC, HEIF and GIF. Drop them in, browse for them, or paste from your clipboard.
2
Choose your options
Tune quality and metadata removal — or leave the defaults, which are sensible.
3
Run it and download
Press the button and save the result. Everything happens on your device, and nothing is uploaded.

Privacy, in plain words

Is it safe? Your image is not uploaded anywhere

What “uploaded” normally means. On most online converters, pressing the button copies your file across the internet onto a computer owned by that website. That copy is what the word “upload” means, and it is the part nobody explains.

What happens instead. This site does not do it. There is no server here that receives files, so your image is read, converted and handed back by the browser you are using right now. It never travels — so there is no copy to store, read, leak or hand over.

Check it yourself in ten seconds

Turn off your Wi-Fi after this page has loaded, then convert a file anyway. It still works, because everything needed is already on your device.

The longer explanation of how this works, and the full detail of what is and is not stored on the privacy page.

Why this matters more than it sounds

Photographs carry more than what is in the frame — most also carry the time, the device and often the GPS coordinates where they were taken. It matters more than it sounds, because of what images usually are:

Photographs of children

family pictures that should stay in the family

Passport and visa photos

biometric-grade images of your face

Screenshots of private messages

conversations that included other people

Photos of ID cards and licences

the usual way people send identity documents

A file that is never sent cannot be kept, leaked, subpoenaed or used to train anything. That is a property of how this works, not a promise about how carefully it is run.

How Watermark Image works

Stamp your name across a photo before you send it anywhere. Everything happens inside this page: the file is read from your device into memory, processed there, and handed back as a download. It is never sent anywhere, and closing the tab discards it.

What it accepts: JPG, PNG, WebP, AVIF, TIFF, BMP, HEIC, HEIF and 1 more. Files are identified by their contents rather than their name, so a mislabelled file is still handled correctly.
What happens to the data: The result is re-encoded, so some detail is discarded permanently. Starting from the original rather than from an already-processed file keeps that loss to one pass.
Size limit: Up to 80 MB per file. Because the work happens on your own machine, available memory is the real constraint — a laptop handles far more than a phone.

The settings, and what each one changes

Watermark Image exposes 9 settings. The defaults are chosen to suit the common case, so changing nothing is a reasonable way to start.

Text: Free text, used exactly as you type it.
Size: Takes 1 to 30 %. Applied to every file in the batch.
Strength: Takes 5 to 100 %. Applied to every file in the batch.
Colour: Free text, used exactly as you type it.
Position: Choose between Bottom right, Bottom left, Bottom centre, Middle and others.
Repeat across the image: A repeated mark is far harder to crop out than one in a corner.
Angle: Takes -90 to 90 °. Applied to every file in the batch.

Worth knowing before you start

A mark in one corner is easily cropped off. Turn on repeating if the point is to make the picture hard to reuse rather than simply to sign it.

About these formats

Accepts

JPEG Image

The universal lossy photo format.

Extensions: .jpg, .jpeg, .jpe, .jfif
MIME type: image/jpeg
Best for: Photographs · Email and messaging · Maximum compatibility
Compatibility: Opens everywhere — every browser, OS and device.

Accepts

Portable Network Graphics

Lossless image format with full alpha transparency.

Extensions: .png
MIME type: image/png
Best for: Transparency · Graphics and logos · Screenshots
Compatibility: Universally supported.

A mark in one corner is easily cropped off. Turn on repeating if the point is to make the picture hard to reuse rather than simply to sign it.

Good to know

Watermark Image — questions

How does Watermark Image work?

Stamp your name across a photo before you send it anywhere. Add your files above, adjust anything you want to change, and press the button. The result downloads straight to your device.

Is there anything I should watch out for?

A mark in one corner is easily cropped off. Turn on repeating if the point is to make the picture hard to reuse rather than simply to sign it.

Is Watermark Image safe — are my files uploaded to a server?

No, nothing is uploaded. On most online tools, pressing the button copies your file across the internet onto a computer owned by that website, where it is processed and then sent back. That copy is what "upload" means. This tool does not do it: your file is read and processed by the browser you are using right now, stays on this device the whole time, and is discarded when you close the tab. Turn off your Wi-Fi after the page loads and it still works, which is the quickest way to confirm it.

Can I use this on confidential or personal documents?

Yes — that is the case it was built for. Because the file never leaves your device, a confidential document is no more exposed than it is sitting in your own folder: there is no transfer, no copy on anybody else's hardware, no retention period and no staff with access. Nothing about the file is logged either — not its name, not its size, not its contents.