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Redact

Free online PDF tools · everything runs in your browser

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Processed locally, never uploaded

Files never uploadedEverything runs in your browser
Nothing to installWorks straight from the page
Free and unlimitedNo sign-up or login

Merge PDF

Combine several PDFs into one file, in the order shown below (drag to reorder).

    No files added yet

    Cover confidential text and images with boxes or a brush. On export every page is rasterised, so the covered content is permanently removed and cannot be recovered.

    All processing happens locally in your browser. Your files are never uploaded to any server.

    Open this tool

    Cover sensitive text and images in a PDF with rectangles or a brush; on export the pages are rasterised and the covered content is permanently removed from the file. Ideal for redacting private details before publishing.

    This is true redaction, not drawing black boxes: after export no recoverable text remains under the covered areas. The action is irreversible, so confirm before exporting. Fully local - no uploads.

    How to use it

    1. Add a PDF; the first page is shown.
    2. Drag rectangles or brush over the confidential content.
    3. Move through the other pages (each stroke can be undone).
    4. Click Start and export the redacted PDF.

    Frequently asked questions

    Can redacted content be recovered?
    No. On export every page is re-encoded and the covered content is permanently deleted - it cannot be recovered by any means, so confirm before you start.
    How is this different from drawing a black box?
    A black box just sits on top, leaving the text layer selectable; this tool truly redacts so no text layer survives export.
    Are my files uploaded to a server?
    No. Everything runs in your browser and there is no upload endpoint, so the server never sees your content.
    How large a file can I use?
    Stay under about 100 MB and a few thousand pages. Speed and memory depend on your own device.
    Is it free? Do I need an account?
    It is completely free with no usage limit, and no sign-up or login is required.
    Does it work on phones?
    Yes, the layout is responsive. Large files and complex edits are easier on a desktop.
    Which browsers are supported?
    Any modern browser: Chrome, Edge, Firefox, Safari and their mobile versions.
    Does it work with scanned PDFs?
    Yes for page-level operations, which do not need a text layer. There is no OCR, so text cannot be pulled out of a scan.

    Client-side only · No sign-up · Local processing · Files never uploaded