Private browser-based image watermark tool

Add Watermark to Image Online

Add text or logo watermarks to JPG, PNG, and WebP photos. Everything runs locally in your browser, so your images are not uploaded to a server.

No uploadUses File API and Canvas in your browser.
Text or logoUse custom text, or overlay your own PNG/SVG logo.
Download instantlyExport as PNG, JPG, or WebP with quality control.

Click to choose or drag & drop an image

JPG, PNG, WebP

Privacy note: the original image and watermark are processed in memory in your browser. ToolPile does not receive the image file.

How to add a watermark to an image

  • Choose a JPG, PNG, or WebP photo.
  • Select text watermark or upload a logo.
  • Adjust position, opacity, size, rotation, and tiling.
  • Click Apply Watermark, then download the finished image.

Common uses

  • Mark product photos before sharing with clients.
  • Add a brand logo to social media images.
  • Create proof previews for photography work.
  • Add a subtle ownership mark without uploading files.

Image watermark vs PDF watermark

This page watermarks photos and image files. If you need to stamp PDF pages, use the PDF Add Watermark tool.

Limitations

Watermarks can deter casual reuse, but they are not DRM. Keep original files safe and use visible placement when protection matters.