Image Watermark

Stamp text or a logo over images with position and opacity control.Image Tools

Drop your images here

JPG, PNG or WebP images

Up to 25 MB per file · up to 20 files

Output options

Output formatEvery file in the batch is written in this format.

Watermark textLeave empty and choose an image below to stamp a picture instead.Watermark image (optional)A PNG with transparency works best. It replaces the text when set.Text colourPositionSize: 14% of image widthOpacity: 40%

Your files are processed on this device. Nothing is uploaded to a server.

About this tool

Protect sample images and previews before sharing them. Type the watermark text or upload a PNG logo, then place it in a corner, the centre, or tiled across the whole image — all drawn locally on a canvas.

How to use the Image Watermark tool

Add images. Drop JPG, PNG or WebP files to stamp in a batch.
Design the watermark. Enter text (or pick a watermark image), choose position, size and opacity. Tile mode repeats it everywhere.
Stamp and download. Results download individually or as a ZIP archive.

Supported formats

Input

JPEG
PNG
WebP

Output

Same as source
PNG
JPEG
WebP

Inputs are validated before anything is processed. Invalid values and unsupported files are rejected with a clear error instead of failing silently.

Frequently asked questions

Can I use a transparent logo?

Yes — a PNG with alpha works best. It is scaled relative to the image width.

Does watermarking remove metadata?

Yes. The output is a fresh canvas encode without EXIF, which usually suits shared previews.

Is a watermark real protection?

It is a deterrent, not encryption. A determined editor can crop or clone it out.

Why did my text watermark not appear?

Enter text or choose an image — an empty watermark is rejected with a clear message instead of silently doing nothing.

Privacy

Watermarking runs on a local canvas; images never leave the device.

No account is required and no file is ever uploaded. See the privacy policy for details about analytics and the limited data this site stores.

Known limitations

The watermark is drawn over the image; underlying pixels remain recoverable to a determined editor.
System fonts are used for text watermarks; exact brand fonts are not embedded.
Animated sources export the first frame.

Other free tools from the same collection.

Batch Image ConverterConvert a whole batch of images into one chosen format.Add PDF WatermarkStamp text over every page with adjustable size, position and opacity.Image ResizerResize by exact pixels, percentage, or fit-within-bounds.JPG to WebPShrink JPG photos into WebP, typically 25–40% smaller.