Redact a PDF online for free. Draw black boxes over sensitive text, and KOIAE permanently removes what's underneath by flattening those pages — safe, private, in your browser.
Covering sensitive text with a black box isn't enough — if the text underneath is still there, anyone can copy it. Redact PDF does it properly: you draw black boxes over names, numbers or private details, and KOIAE flattens those pages so the hidden content is permanently removed, not just hidden.
Drop your PDF onto the Redact PDF tool above, or click to browse and pick it from your device.
Drag boxes over anything sensitive; KOIAE rasterises those pages so the text underneath is permanently gone.
Download a redacted PDF in one click. Any files you upload are deleted automatically afterwards.
Yes — Redact PDF is free. There is no account to create, no watermark on your files, and generous daily limits for everyday use.