Browse all WhiskFile tools for PDF and image processing — free, private, no signup required.
WhiskFile security tools: password protect, watermark, and secure your PDFs.
Add a password to protect your PDF
Remove password from a PDF you own
Add text or image watermarks with tiling, page selection & layer control
Smart or full flatten — form fields, annotations, and layers made permanent
Remove metadata, annotations, JavaScript, and hidden content from PDFs
Detect and permanently redact personal information from PDFs
AI detects and permanently redacts PII — choose categories, add custom words
Compare two PDFs with 5 view modes — visual diff, text diff, overlay, flicker, and more
Send PDFs for electronic signature — add signers, place fields, track status
