How to redact a PDF without uploading it
Most online redaction tools work by uploading your file to a server, redacting it there, and sending it back. For a sensitive document, that means trusting a company with the very data you're trying to hide — even if it's deleted afterward.
There is a better way: redact the PDF entirely inside your own browser, so the file never leaves your device. Here's how, and how to prove to yourself that nothing was uploaded.
Step by step
- 1Open the redactor — nothing to install
Go to the PDF Redactly redactor in any modern browser (desktop or phone). There's no app to download and no account needed to start.
- 2Drop your PDF onto the page
Drag the file in or click to choose it. It loads straight into the browser tab — there is no upload endpoint, so the document never travels to a server.
- 3Let auto-detection find the sensitive data
PDF Redactly scans the document and flags 30+ categories — names, SSNs, emails, phone numbers, account numbers, dates of birth, and more — so you don't have to find every instance by hand.
- 4Review and adjust
Add your own phrases to redact everywhere they appear, click any word on the page to mark it, or drag the edge of a redaction box to extend or shrink it. You stay in control of every redaction.
- 5Apply and download
Applying the redactions destroys the underlying text and image data inside each box in the output PDF — it isn't just visually covered. Copy-paste from the saved file reveals nothing.
How to verify nothing was uploaded
You don't have to take anyone's word for it. Before you drop your file, open your browser's developer tools and select the Network tab. Then load and redact your PDF.
If the tool is truly local, you'll see no network request carrying your document — the file size never goes out. With PDF Redactly there is no upload endpoint at all, so there's nothing on a server to retain, leak, or subpoena.
Why "never uploaded" beats "deleted after"
Uploaded-then-deleted depends on a policy being followed perfectly, on every server, forever. Never-uploaded removes the question entirely: there is no copy anywhere but on your machine.
FAQ
Yes. Once the page has loaded, PDF Redactly runs in your browser and does not send your file anywhere. The detection model and redaction engine ship as JS/WASM and run locally.
Open your browser's Network tab and watch while you redact — you'll see no request carrying your document. There is no upload endpoint.
Free, in your browser, with automatic detection. Your file never leaves your device.
Open the redactor