Does a watermark actually stop people using my photo?

It does not make copying impossible, but it makes casual reuse obvious and traceable back to you. A tiled watermark across the frame is much harder to remove by cropping than a single corner mark.

Where should I position a watermark on an image?

A bottom corner is the convention because it stays out of the subject. If the concern is theft rather than attribution, tile it across the frame or place it over the subject, since anything in a corner can be cropped away.

What opacity should a watermark be?

Between 40 and 70 percent for most photos — visible enough to read but not so heavy it dominates the image. Proof images meant to discourage use go higher; attribution marks go lower.

Can I watermark an image with my own logo file?

Yes. Switch to the logo mode and choose a PNG with a transparent background. It is scaled to a percentage of the image width with its aspect ratio preserved, and can be rotated and tiled like a text mark.

Is my image uploaded to add the watermark?

No. Both the photo and the logo are read into the page and composited on a canvas on your device, with no network request involved.

Add a Watermark to an Image

Stamp a text or logo watermark onto a photo — anchored in any corner or tiled across the frame, with opacity and rotation.

The Image Watermark tool runs entirely in your browser. Your photo and logo are composited on your device and are never uploaded.

Open the Image Optimizer

About Image Watermark

Image Watermark stamps a mark onto a picture at the image's full resolution, so what you download is not an enlarged preview. A text watermark takes any string, colour, rotation and opacity; a logo watermark takes a PNG — transparency works best — scaled to a percentage of the image width. Position it against any of nine anchors, or switch to tiling and the mark repeats across the whole frame on a spacing you control, the pattern used for proofs that should survive a crop. Sizes and margins are percentages of the image's short side rather than fixed pixels, so one setting looks right on a phone screenshot and a 6000-pixel camera file alike.

Features

Text or logo watermarks, drawn at the image's native resolution
Nine anchor positions, or tiling across the whole frame
Adjustable opacity, rotation and edge margin
Text colour picker and size as a percentage of the image
Logo scaled to a percentage of image width, aspect preserved
Tile spacing control for proof-style repeated marks
Live preview that updates as you adjust every control
Keeps JPEG and WebP format; other inputs export as PNG

How to use the Image Watermark

Drop the image you want to watermark onto the box
Choose a text or logo watermark and set its content
Pick an anchor position, or switch on tiling to repeat it
Adjust opacity, size and rotation, then download the result

Example

Input

© Studio Name, bottom right, 60% opacity, 5% size

Output

Watermarked image at the original resolution

A percentage-based size keeps the mark proportionate whatever the source resolution.

Common errors & troubleshooting

The watermark is barely visible against a busy photo. — Raise the opacity and pick a colour that contrasts with the area behind the mark. A white mark on a bright sky disappears; moving it to a darker corner often solves it outright.
The logo watermark has a white box around it. — Use a PNG with a transparent background. A JPEG logo has no alpha channel, so its background is drawn as solid colour.
The tiled watermark is too dense or too sparse. — Adjust the tile spacing slider. It is a percentage of the mark's own size, so 100 leaves one mark-width of gap between marks.
The exported file looks lower quality than the preview. — JPEG output is re-encoded, which costs one compression generation. If the source is a PNG the output is a PNG and stays lossless.

Frequently asked questions

Does a watermark actually stop people using my photo?: It does not make copying impossible, but it makes casual reuse obvious and traceable back to you. A tiled watermark across the frame is much harder to remove by cropping than a single corner mark.
Where should I position a watermark on an image?: A bottom corner is the convention because it stays out of the subject. If the concern is theft rather than attribution, tile it across the frame or place it over the subject, since anything in a corner can be cropped away.
What opacity should a watermark be?: Between 40 and 70 percent for most photos — visible enough to read but not so heavy it dominates the image. Proof images meant to discourage use go higher; attribution marks go lower.
Can I watermark an image with my own logo file?: Yes. Switch to the logo mode and choose a PNG with a transparent background. It is scaled to a percentage of the image width with its aspect ratio preserved, and can be rotated and tiled like a text mark.
Is my image uploaded to add the watermark?: No. Both the photo and the logo are read into the page and composited on a canvas on your device, with no network request involved.

Related tools

Watermark PDF — Add a diagonal text watermark to every page.
Add Watermark to Video — Overlay a text or logo watermark on a video with position and opacity control, in your browser.
Image Optimizer — Re-encode and shrink images (JPEG/WebP/PNG), optionally resizing.
Image Cropper — Crop an image to any area or fixed aspect ratio and download it, in your browser.
Image Format Converter — Convert images between PNG, JPEG and WebP entirely in your browser.
EXIF Viewer & Remover — View and strip EXIF metadata (including GPS) from photos — nothing is uploaded.