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Image Redaction Tool

Draw opaque boxes over sensitive parts and export a flattened PNG.

Tool inputs stay in your browser · optional AI search sends your query

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Good to know: Choose a JPG, PNG or WebP. Drag across areas to permanently paint black pixels in the exported PNG. Undo the last box or reset before exporting. This is raster image redaction, not PDF/text redaction. Inspect the exported image carefully; missed areas remain visible. The original file is unchanged. Images are resized to fit 4096×4096 and decoded images over 24 megapixels are rejected. Files are processed on your device, not sent to our server. Limits protect browser memory; close other heavy tabs on older phones.

How to use it (step by step)

  1. 1Choose a photo or screenshot.
  2. 2Drag boxes over anything private (names, numbers, faces). They become solid black.
  3. 3Download the cleaned PNG and check it before sharing.

Words to know

JPG, PNG, WebP
Picture file types. JPG is best for photos, PNG for graphics and see-through backgrounds, WebP is newer and smaller.
Redaction
Covering private information with solid black so nobody can read it.
Flatten
Turning editable form boxes into normal, fixed page content so nobody can change them.
Resolution / pixels
A picture is made of tiny dots called pixels. 1080×1920 means 1,080 dots wide and 1,920 tall.
PDF
A document file that looks the same on every phone and computer.

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