Secure your PDF documents with industrial-grade 256-bit AES encryption. Set custom open passwords, owner passwords, and restrict printing, text copying, or modification permissions. Run encryption at the end of a multi-tool pipeline alongside watermarking, sanitizing, or flattening in a single session.
error folder with a detailed log.
ℹ️ The entire page text layer is removed to guarantee no sensitive content remains (image-only output).
⚠️ Note: If your PDF is an image or scanned document, text cannot be found. We recommend selecting "Rebuild & Repair PDF" alongside Redact for OCR, but this will increase processing time.
DocInspector enforces cryptographically secure restrictions, locking PDF features using advanced security standards.
We apply 256-bit AES encryption (the banking and military standard). This completely locks the document structure, preventing unauthorized parties from opening or modifying it without the correct decryption key.
Set permissions independently. You can allow users to view the document but block them from copying text, extracting pages, filling form fields, or printing in high resolution.
Run encryption as the final step in a multi-stage pipeline. Sanitize hidden metadata first, apply a watermark overlay, flatten the layers, and then encrypt the output - keeping files safe in transit.
Our online tool is built on the same isolation principles as the desktop app. Here is the exact data flow from your browser to the processed output.
Protect PDF files online with password encryption. In the settings panel, set User Passwords (for opening) and Owner Passwords (for restricting modifications). Restrict text copying, modifications, and printing. Combine encryption with metadata sanitization, watermarking, and signature stripping in a single pipeline.
No. The 256-bit AES algorithm is cryptographically secure. There is no backdoor to recover files without the original password.
Never. Passwords are processed temporarily in RAM during encryption and are never logged, stored, or transmitted anywhere.
Unlock higher limits, batch processing of thousands of files, folder trees, multi-action pipelines and advanced reporting. Choose the plan that fits your workflow.