NullKit

PDF tools · Free browser tool

Permanently Redact a PDF

Draw redaction areas over PDF pages, then create a flattened replacement copy whose selected page content is rendered without the covered information.

Phone and computer friendly No document upload Free to use

Private workspace

Remove selected visible content through a local flattened export instead of adding removable black annotations.

Local processing
Tab memory only New output file Review before sharing

Your file is processed by code already loaded in this tab. Your device, browser, extensions, downloads, and any later sharing remain part of the trust boundary.

Ready. Choose a file to begin.

Page 1 of 1

English OCR can suggest common identifiers on the current page. It will miss names, faces, addresses, signatures, and unusual formats.

No redaction areas yet.

Choose a file to begin

Remove selected visible content through a local flattened export instead of adding removable black annotations.

What this tool does

A focused PDF job, with a visible boundary.

Remove selected visible content through a local flattened export instead of adding removable black annotations.

01

Touch and mouse redaction drawing

02

Flattened replacement pages

03

Post-export visual and text receipt

Know the limits

Local does not mean unlimited.

Browser processing avoids an upload workflow, but available memory, PDF structure, digital signatures, and the settings you select still matter.

  • Only areas selected by the user are removed.
  • Flattening removes searchable text, links, forms, and accessibility structure from processed pages.
  • The original and any earlier copies remain unchanged and must still be protected.

Four local steps

How to use pdf redactor.

  1. 01

    Choose an unencrypted PDF and keep the original private.

  2. 02

    Review each page and draw over every sensitive area.

  3. 03

    Create the flattened redacted copy locally.

  4. 04

    Reopen, search, copy, zoom, and inspect the final file before disclosure.

Clear answers

PDF redactor questions.

Are the black boxes removable?

The exported pages are newly rendered images containing replacement pixels, not editable cover annotations.

Does this preserve selectable text?

No. The safe fallback deliberately flattens processed pages, which removes searchable text and interactive structures.

Can the tool find every secret automatically?

No. Manual review is required and surrounding context may still reveal information.