100% Free · No Registration

PDFRedactionTool

Specialized in redaction, so no complicated steps.

Upload, select areas, download. That's all it takes.

No Registration
No Credit Card
100% Free

Why kuronuri is Safe

6 security features to protect your confidential information

SSL Encryption

All communications are protected with 256-bit SSL encryption

No Server Storage

PDFs are processed in your browser. Never uploaded to servers

No Registration

No email address or personal information required

No Credit Card

Completely free. No payment information needed

Privacy Protected

Processed data is immediately discarded

Instant Download

Download immediately after redaction is complete

Redaction Features

Completely hide confidential information — Redacted areas are unrecoverable. Cannot be read by copy-paste or OCR.

Select & Redact

Simply drag to select areas for complete redaction. Works with text and images.

Unrecoverable Redaction

Data in redacted areas is completely deleted. Cannot be recovered even with PDF editors.

Batch Processing

Process multiple pages of PDFs at once with batch redaction.

Preview

Check the redaction results in preview before downloading.

Easy 3 Steps

No expertise required. Anyone can use it immediately.

01

Upload PDF

Drag & drop or select the PDF file you want to redact

02

Select Areas

Drag to select the areas you want to hide. Multiple selections supported

03

Download

Click 'Apply Redaction' and download the processed PDF

Premium Plan

kuronuri Plus

Beyond redaction. Access all PDF editing features.

Add & edit text
Create & save signatures
Highlight
Insert shapes
Insert images
Reorder pages
Add annotations
Freehand drawing

Frequently Asked Questions

Find answers to common questions