Redact a PDF
Black out names, numbers and pictures.
or drop it anywhere
How to redact a PDF
Open your PDF
Pick it or drop it on this page.
Mark what to remove
Drag boxes over the text and pictures to redact.
Apply and save
Apply removes the content and rewrites the file so no copy of it remains.
Redact PDF in your browser
A black box drawn over text hides it on screen, but the words are usually still in the file, where anyone can select, copy or search for them. Real redaction removes them. OnePDF deletes the text and pictures under each box from the page, then rebuilds the file so no earlier revision still holds them.
Every marked area is listed before you apply, so you can review them and take any off. Redaction happens on your device; for the strictest privacy, redact signed out, so the unredacted original is never saved to an account.
Why use OnePDF to redact a PDF
Really removed
The words under a redaction are deleted from the page, so they cannot be selected, copied or searched.
No hidden copy
The file is rewritten after redacting, so the original text is not kept in an earlier revision.
Review before applying
Every marked area is listed; remove any before you apply.
Questions about Redact PDF
Is redacted text really gone?
Yes. The text and pictures under each box are deleted from the page, and the file is rebuilt so no earlier revision still holds them.
Can I undo a redaction?
Before you apply it, yes. Marks can be removed from the list. After applying and saving, the content is gone for good.
Is my PDF uploaded?
Not unless you sign in. Signed out, your file is opened by OnePDF inside your browser, on your own device, and is not uploaded to any server. Signed in with a TensorActivity account, the files you open are also saved to your account, encrypted, so they are there on every device you sign in to. That matters most for a document you are redacting: signed in, the file is saved to your account as you open it, unredacted, and replaced by the redacted file when you save. To keep the original out of your account, redact it signed out, or choose "Keep on this device only" for it.
Guides
- How to redact a PDF so the words are really gone
Why a black box over text is not a redaction, where removed words still hide, and how to redact a PDF and check it.
- How OnePDF works: a PDF engine in your browser
The engine behind OnePDF: one Rust codebase for the phone and the web, compiled to WebAssembly, with text recognition that runs on your device.