Redact PDF
Permanently cover sensitive information with black boxes.
Select PDF File
or drag & drop PDF file here
About Redact PDF Online
Permanently delete or black out sensitive information and private data in your PDF.
How to Use Redact PDF
Upload PDF File
Upload the PDF containing sensitive info you need to censor.
Select Areas
Use the selection tool to place black boxes over private text like ID numbers, emails, or names.
Save Redacted PDF
Compile and download the PDF with the redacted information permanently deleted.
Specifications & System Limits
100% Client-Side Privacy
Files are processed entirely within your browser memory via WebAssembly. Your documents never touch external servers.
Super Fast & No Waiting
Instant high-speed conversion with ultra-low latency. Never wait in arbitrary processing queues.
100% Free & No Watermarks
All PDF tools are accessible free of charge without watermarks, hidden paywalls, or required registration.
Frequently Asked Questions (FAQ)
No, our redaction tool completely removes the underlying text characters from the PDF structure under the black boxes.
Absolutely. All redaction processing is run locally on your browser.
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About Redact PDF Online
Permanently delete or black out sensitive information and private data in your PDF.
How to Use Redact PDF
Upload PDF File
Upload the PDF containing sensitive info you need to censor.
Select Areas
Use the selection tool to place black boxes over private text like ID numbers, emails, or names.
Save Redacted PDF
Compile and download the PDF with the redacted information permanently deleted.
Specifications & System Limits
100% Client-Side Privacy
Files are processed entirely within your browser memory via WebAssembly. Your documents never touch external servers.
Super Fast & Reliable
Instant high-speed conversion with ultra-low latency. Never wait in arbitrary processing queues.
100% Free & No Watermark
All tools on KAOpdf are completely free with no watermarks, no file limits, and no account registration required.
Frequently Asked Questions (FAQ)
Can redacted text be recovered?+
No, our redaction tool completely removes the underlying text characters from the PDF structure under the black boxes.
Is this safe for sensitive corporate data?+
Absolutely. All redaction processing is run locally on your browser.