Black Out Signature in PDF — Free in Your Browser
Permanently cover handwritten and digital signatures in PDFs before email, court filings, or public posts.
Signed PDFs often need a redacted copy where one party's signature is removed while the rest of the agreement stays readable. To black out signature in PDF pages safely, draw tight boxes over ink strokes, /Sig appearances, and signature blocks—not the entire page.
HidePDF processes files locally in your browser. That matters when signed NDAs, offer letters, or intake forms should not be uploaded to consumer PDF sites that may retain copies.
How HidePDF works
Load your signed PDF
Open the redaction tool on this page and select the PDF. The file stays on your device.
Draw over each signature
Click and drag black boxes across handwritten lines, typed /s/ blocks, and embedded signature images.
Check every signed page
Use Prev and Next to confirm initials, countersignatures, and footer signature lines are covered.
Download and verify
Export the PDF and try selecting text near the signature area. Redacted regions should not expose signatory names.
Guide: Black Out Signature in PDF
Signatures can appear as vector ink, scanned images, or certificate-backed digital signatures. When you black out signature in PDF exports for sharing, treat each appearance separately—covering a signature stamp may still leave the printed name in the line above.
Flattened blackout is stronger than white rectangles drawn in markup mode. HidePDF burns redactions into the rendered page so casual copy-paste is less likely to recover covered strokes.
For signature photos before they are merged into a PDF, HideShot can black out image captures. See also redact signature from PDF for related workflows.
Related guides
Explore more ways to redact PDFs privately, or use the redaction tool above:
Frequently asked questions
Will blacking out a signature remove the digital certificate too?
HidePDF redacts visible page content. Certificate panels and metadata may still exist—review your viewer's signature panel if certificates must be removed.
Can I black out initials on every page at once?
Draw boxes page by page, or use Clear page and redo if you miss a footer initial.
Is browser redaction safe for signed legal PDFs?
Avoiding upload reduces one exposure path, but follow your counsel's rules for sharing redacted contracts.
Does HidePDF add a watermark over signatures?
No. The exported PDF has no HidePDF branding on the redacted pages.