Are my photos uploaded to a server?

No. The watermark is drawn entirely inside your browser and your images never travel over the network.

Does a watermark actually stop people reusing my images?

Not on its own. A watermark makes reuse inconvenient and makes the source visible afterwards; it cannot technically prevent copying. Tiling it faintly across the whole frame is what stops someone simply cropping the corner off.

How strong should the watermark be?

As faint as it can be while still readable. Somewhere between 25% and 40% works for most photos. Stronger marks deter reuse more but also get in the way of the picture you wanted to show, so compare both in the preview.

Why tilt the watermark?

Horizontal text sits in predictable places and is easy to crop away or paint over. Tilting it and repeating it across the frame means the text overlaps the subject in many places, which makes removing only the watermark difficult.

Can I place just one mark in a corner?

Yes. Switch the placement to "One spot" and drag it anywhere on the preview. That suits a discreet copyright or credit line where you only need to show the source.

Is there a limit on how many images I can process?

No. There is no sign-up, no daily limit and no cap on the number of files. Download them one by one or all together as a ZIP.

Image Watermark

Add a text watermark to your images. Tile it diagonally to discourage reuse, or place a single copyright line in one corner. Images never leave your device.

Your input stays in your browser and is never sent.

Drop images here or click to chooseJPG, PNG or WebP (several at once). The first one is previewed and the same settings apply to all. Images never leave your device.

What the image watermark tool can do (tiling, single placement, opacity)

This tool burns a text watermark into photos and illustrations. You can tile it diagonally across the whole frame, or place a single mark in a corner or the middle. It handles .jpg, .png and .webp, and the same watermark can go onto as many images as you drop in.

When you tile, the opacity, the angle and the spacing between repeats are all yours to set. Lower the opacity and the photo still reads through the mark; tighten the spacing and no clear patch is left anywhere. The angle runs from -90° to 90° in one-degree steps.

The font size is a percentage of the image's shorter edge, so a batch of differently sized photos still comes out with watermarks that look the same relative size.

Three steps to add a photo watermark to your images

ChooseDrag and drop the images you want to protect (.jpg / .png / .webp). Several at once is fine; the first one is used for the preview.
AdjustType text that identifies you into "Watermark text", then set the placement to "Tile across" or "One spot". The preview redraws as you move the opacity, angle and spacing.
SavePress the watermark button, then "Save" each image or save them all together as a ZIP. Your original files are never overwritten.

How to tile a watermark that actually deters reuse

A watermark cannot technically prevent copying. What it can do is make removal tedious and make the source of a circulating image obvious. Those two goals are what the opacity, angle and spacing settings are really tuned against.

A single mark in a corner comes off with one crop. Tilted and repeated across the frame, the text overlaps the subject in enough places that neither cropping nor painting over removes it cleanly. Keep the opacity as low as you can while the mark is still legible.

Photos you do not want reposted (tiled): Around 25–40% opacity, about -30°, and spacing tight enough to leave no clear patch. The photo still reads, but taking the watermark off becomes hard.
Photos that just need attribution (single): One faint mark in a bottom corner. This suits portfolio images where the picture should stay as unobstructed as possible.

Watermarked images are never sent to a server

Everything happens inside your browser. Reading the image, drawing the watermark over it and building the file you download all take place on the page you have open, and the photo itself never travels over the network.

The images that most need a watermark are usually the ones you have not published yet: unreleased work, product shots before launch. Being able to mark them without handing them over is the whole point. Whatever you drop in disappears when you close the tab.

When you only need text in one spot, not a watermark

This tool is built around watermarks, so it starts faint, tilted and tiled. If you want a date or a product name to be read clearly, Add Text to Image is built around captions and gives you only the controls that job needs.

This tool works on images only (.jpg, .png and .webp). It cannot add a watermark to the pages of a PDF.

Image watermark FAQ

Are my photos uploaded to a server?: No. The watermark is drawn entirely inside your browser and your images never travel over the network.
Does a watermark actually stop people reusing my images?: Not on its own. A watermark makes reuse inconvenient and makes the source visible afterwards; it cannot technically prevent copying. Tiling it faintly across the whole frame is what stops someone simply cropping the corner off.
How strong should the watermark be?: As faint as it can be while still readable. Somewhere between 25% and 40% works for most photos. Stronger marks deter reuse more but also get in the way of the picture you wanted to show, so compare both in the preview.
Why tilt the watermark?: Horizontal text sits in predictable places and is easy to crop away or paint over. Tilting it and repeating it across the frame means the text overlaps the subject in many places, which makes removing only the watermark difficult.
Can I place just one mark in a corner?: Yes. Switch the placement to "One spot" and drag it anywhere on the preview. That suits a discreet copyright or credit line where you only need to show the source.
Is there a limit on how many images I can process?: No. There is no sign-up, no daily limit and no cap on the number of files. Download them one by one or all together as a ZIP.