Hide Account Numbers in PDF — True Redaction, Not Just a Cover
Hiding an account number in a PDF means more than drawing a black box — the underlying text must be permanently deleted from the file.
Start Redacting for Free →Why Covering Is Not Enough — You Need True Redaction
Hiding an account number in a PDF means more than drawing a black box — the underlying text must be permanently deleted from the file. Our free tool does true redaction: account numbers are removed from the PDF file structure and cannot be recovered by selecting, copying, or inspecting the document.
- A black rectangle drawn over text is just a visual layer — the text underneath remains selectable and copyable
- Anyone can select all text, copy it, and paste it elsewhere to reveal the 'hidden' account number
- PDF developer tools can trivially remove overlay shapes to expose the original content
- True redaction permanently deletes the source text from the PDF so there is nothing left to reveal
How to Redact — 3 Simple Steps
Open Your PDF
Select the PDF containing account numbers — it loads in your browser, never uploaded anywhere.
Permanently Redact the Number
Draw a redaction box over the account number, or use Search & Redact to find and remove it across all pages instantly.
Download Secured PDF
Download the PDF with the account number permanently deleted — not just hidden, but gone from the file.
Key Features
🔒 Your Files Never Leave Your Device
Unlike tools that upload your PDFs to remote servers, our tool processes everything locally in your browser using WebAssembly. No server ever sees your documents — not even us. This makes it one of the most private PDF tools available, completely free.
Frequently Asked Questions
What is the difference between hiding and redacting an account number?
Hiding (covering with a shape) only affects appearance — the number stays in the file. Redacting permanently deletes the text data so it cannot be selected, copied, or recovered.
Can I leave the last 4 digits visible and only hide the first 12?
Yes — draw a redaction box covering only the portion you want to remove with precise pixel-level control.
Will the redaction hold when the PDF is shared or printed?
Yes — the redaction is permanent and embedded in the file. It persists regardless of how the file is opened, shared, or printed.
Does this work on bank-generated PDFs?
Yes — works with any standard PDF from any bank or financial institution.
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