Draw redaction boxes over social security numbers, client names, financial figures, or anything else that needs to stay hidden. The output is flattened — the text underneath is permanently destroyed, not just covered with a shape.
Or drop it here to start immediately
This tool processes your files directly in your browser — nothing gets uploaded to a server. When you're working with black out what shouldn't be visible, the document stays on your machine from start to finish.
Select the PDF file containing sensitive details.
Draw blackout boxes over names, numbers, or private text.
Click "Redact" to permanently flatten and download your file.
Everything you need to know about black out what shouldn't be visible.
Open PDF: Select the PDF file containing sensitive details. Draw Box: Draw blackout boxes over names, numbers, or private text. Sanitize file: Click "Redact" to permanently flatten and download your file. All of this is done on your machine.
Absolutely. Because NexPDF runs entirely client-side using WebAssembly, the document is never uploaded to any external server. Your sensitive data is kept 100% private.
No, there are no artificial file size caps. The only physical limit is your device's available browser memory, which easily handles large documents.
Yes, NexPDF is cached inside your browser after the first load. You can disconnect your internet and continue to use the tool completely offline.
Drop your file in the workspace at the top of the page. No registration required.
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