ToolMole Batch Add Watermark

Free plan

What the maker publishes

Batch limit

There is no fixed image-count limit; images are processed one at a time, and users can cancel while keeping completed files. source

Batch output

Processed files retain their original format and name with “-watermarked” added; users can download files individually or as a ZIP. source

Input formats

The tool accepts JPG, PNG, and WebP images; logo files can be PNG, SVG, WebP, or JPG. source

Maker

ToolMole describes itself as a small independent project built and maintained by one developer. source

Offline use

The tool works without a connection after the first visit. source

Privacy

Images are processed in the browser on the user’s machine and are not uploaded to a server. source

Purpose

Adds text or a user-provided logo watermark to batches of photos. source

Quality limit

JPG and WebP files are re-encoded at high quality with some generational loss, while PNG output is lossless. source

Relative sizing

Watermark size is set as a percentage of each image’s width, so it scales across differently sized images. source

Support

Users can email the person who builds the site; the contact page says there is no ticket system or chatbot. source

Tiled watermark

A tiled angled watermark is offered for proofs and previews and is described as helping the mark survive cropping and screenshotting. source

Watermark controls

Users can set position, size, opacity, and text color, and enable a shadow for text watermarks. source

Checked against the maker's pages on 11 Oct 2026.