Batch Blur

Redact the same area across many images, for example a watermark or a name field.

Redaction & masking Client-side Batch Canvas + zip

Tool preview

How to use it

! One region per run; different layouts need separate runs.
! Percentages are relative to each image, so images of different sizes still get the same relative area.

Why percentages instead of pixels?

Every image may have different dimensions, so a relative region stays aligned.

Can I redact two separate areas?

Run the tool twice, once per area.

Is the mosaic reversible?

Treat it as irreversible for practical purposes, but use solid fill for legal documents.

Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.

Add a use-case, date and recipient watermark to an ID document.

Stamp a purpose and date watermark onto a photocopy.

Lay both sides onto one A4 page, ready to print.