Are my images uploaded to Convertr?

No. This watermark tool uses browser Canvas APIs, so selected images, watermark text and logo files stay on your device.

Can I watermark several images at once?

Yes. Select up to eight JPG, PNG or WebP images and download watermarked copies from your browser.

Yes. Upload a PNG, JPG or WebP logo and place it as a single watermark or a repeated tiled watermark.

WebP export depends on browser Canvas support. If WebP export is unavailable, choose JPG or PNG output.

Add text or logo watermarks to JPG, PNG and WebP images locally in your browser. No upload, no signup, no desktop editor.

Images stay on your device

Text, logo, tile and rotation controls

Export JPG, PNG or supported WebP

Drop JPG, PNG or WebP images here

Up to eight images are processed locally in this browser.

Choose images to start.

Watermark type

Watermark text

Text color

Font

Position

Tile

Opacity 45%

Scale 18%

Rotation 0°

Output format

Quality 90%

Canvas rendering happens on your device. Filenames, watermark text, image pixels and logo content are not sent to analytics or Convertr servers.

Place a single watermark in a corner or center, or repeat it across the image with opacity, scale and rotation controls.

Very large images can exceed browser memory on phones. If WebP export is not supported, export as JPG or PNG instead.