DocomintPDF schwärzen
Schwärze sensible Inhalte in einem PDF dauerhaft, komplett in deinem Browser.
Drop your PDF here
or choose a file from your device
What is a PDF schwärzen?
Redaction permanently removes sensitive content before sharing a PDF externally — a Social Security number on a tax form, an account number on a bank statement — for a purpose that doesn't need it visible. Drawing a black box in a PDF viewer usually doesn't actually delete the text underneath; this rasterizes the page so what's covered is genuinely gone.
How to use the PDF schwärzen
- Add a PDF file and draw boxes over what to redact, page by page
- Every page is rasterized to an image with those boxes burned in, on your device
- Download the redacted PDF — the covered content is gone, not just hidden
Example
Drawing a box over an account number on page 2 of a bank statement and downloading the result means that number no longer exists in the file's text layer — copying and pasting from where it used to be returns nothing.
Why use PDF schwärzen
True redaction, not a visual overlay
Every page is rasterized to an image before boxes are burned in — the covered text is genuinely gone, not just painted over.
Draw boxes right on the preview
Drag over the actual rendered page to mark what to redact, page by page, instead of guessing coordinates.
Nothing uploaded
Rasterization and redaction both happen locally via WebAssembly — your document is never sent to a server.
What can you create?
Share a bank statement without the account number
Black out an account or routing number before sending a statement to someone who only needs the balance.
Redact personal details before a public filing
Remove a name, address, or SSN from a document headed somewhere it'll be publicly visible.
Prepare a document for legal discovery
Cover privileged or irrelevant sections before producing a document, with the underlying text actually gone.
Frequently asked questions
Is my PDF uploaded anywhere?
No — PDF schwärzen runs entirely in your browser using JavaScript/WebAssembly. Your PDF is never sent to a server.
Is there a file size limit?
Free use covers files up to 100MB per file; signing up for Pro raises that to 500MB.
Can someone still copy-paste the text I redacted?
No — because the page is rasterized (turned into a flat image) with the box burned in, there's no underlying text layer left for that page at all, redacted or not.
Does redacting one page turn the whole PDF into images, even pages I didn't mark?
Yes — every page is rasterized during redaction, not just the ones with a box, since partial rasterization isn't reliably supported across PDF viewers. Text on unmarked pages is no longer selectable afterward either.
Can I undo a redaction box if I place it in the wrong spot, before downloading?
Yes — nothing is permanent until you download; you can remove or reposition a box freely while you're still working on the page.