How is this different from covering it with a black rectangle?

A black rectangle is just a shape laid over the text — the text is still in the file. Copy and paste it out and everything appears. A great many document leaks by institutions happened exactly this way. This tool re-bakes the page as an image, so the text data itself is no longer in the file.

I cannot select text in the PDF I got back.

That is precisely why it is safe. Keeping the text would keep the redacted part too. If you need selectable text, this is not the right tool.

Does text disappear from pages I did not redact?

Yes. Every page is re-baked as an image, so the text data disappears from the whole document — including hidden notes and comments you could not see.

Where does the file get uploaded?

Nowhere. It is handled inside your browser and never sent to a server.

The text looks blurry.

Raise the sharpness. The sharper it is, the larger the file. For printing, the sharpest setting is the one to use.

PDF redaction

Name: PDF 가리개
Author: KarmoLab

The text really is gone · hidden notes and annotations too · page count kept · no upload

PDF 가리개

PDF 에서 개인정보를 지웁니다. 검은 네모를 얹는 게 아니라 글자 자체를 없앱니다

PDF 에 검은 네모를 그려도 글자는 파일 안에 남습니다 — 복사하면 다 나옵니다. 이 도구는 페이지를 그림으로 다시 구워서 글자 자체를 없앱니다.

가릴 PDF 를 끌어다 놓거나 눌러서 고르세요

파일은 브라우저 안에서만 다뤄집니다 — 어디에도 올리지 않습니다.

Removes personal data from a PDF. The usual trick of laying a black box on top leaves the text in the file, where a copy-paste brings it all back. This re-bakes each page as an image so the text itself is gone.

How to use it

Choose a PDF
Drag over what to hide (move between pages as you go)
Pick the sharpness
Download the redacted PDF

Common questions

How is this different from covering it with a black rectangle?: A black rectangle is just a shape laid over the text — the text is still in the file. Copy and paste it out and everything appears. A great many document leaks by institutions happened exactly this way. This tool re-bakes the page as an image, so the text data itself is no longer in the file.
I cannot select text in the PDF I got back.: That is precisely why it is safe. Keeping the text would keep the redacted part too. If you need selectable text, this is not the right tool.
Does text disappear from pages I did not redact?: Yes. Every page is re-baked as an image, so the text data disappears from the whole document — including hidden notes and comments you could not see.
Where does the file get uploaded?: Nowhere. It is handled inside your browser and never sent to a server.
The text looks blurry.: Raise the sharpness. The sharper it is, the larger the file. For printing, the sharpest setting is the one to use.

Other tools

Stays on your device What you enter is handled inside your browser only — nothing is stored or sent anywhere.

This tool page states where what you enter goes — see the badge above. All tools · KarmoLab · Who made this · Built with AI. View source