Security PDF
Protect and secure your PDF files instantly in your browser. Protect PDFs with passwords, redact sensitive information, sign documents, remove annotations, and more — all free, secure, and private.
Sign & Security
11 tools
Sanitize PDF
Remove JavaScript, embedded files, hidden metadata, annotations, form fields, and hyperlinks from any PDF — free online PDF sanitizer.
PDF Permission Manager
View and set PDF permissions — restrict printing, copying, modifying, and annotating with owner password encryption.
Protect PDF
Add password protection to your PDF - Free online PDF password protector
Unlock PDF
Remove password protection from PDF files - Free online PDF unlocker
Remove Password
Remove the password from an unlocked PDF file - Free online PDF password remover
Redact PDF
Permanently redact sensitive information from PDF files - Free online PDF redaction tool
PDF Signature
Add a digital signature to your PDF - Free online PDF signature tool
PDF/A Converter
Convert any PDF to PDF/A-1b, PDF/A-2b, or PDF/A-3b archival format online free. Embeds XMP metadata, sRGB OutputIntent, and strips JavaScript — all in your browser.
PDF Certificate Viewer
Extract and display certificate details from digitally signed PDFs — signer name, Subject DN, Issuer DN, signing time, reason, and handler filter. Free online PDF certificate inspector.
Remove Annotations
Remove all comments and annotations from a PDF - Free online PDF annotation remover
Remove Hidden Text
Detect and remove invisible text layers from PDF files — strips OCR hidden text (render mode 3) and hidden OCG layers. Free online PDF hidden text remover.