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Free Lock PDF Tool

Lock PDF

Add password protection to your PDF files. Your files never leave your device.

Drag & drop PDFs or click to upload

Up to 10 files • Max 10 MB each

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We're Not Just
a Tool Site!

This tool is just a small part of Legitt AI. We're a complete contract management platform trusted by enterprises worldwide.

See What We Really Do

Draft

AI-powered contract generation in seconds

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Review

Spot risks and get smart suggestions instantly

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E-Sign

Legally binding signatures, sent & tracked

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100% Private

PDFs encrypted locally nothing uploaded to servers

RC4 128-bit Encryption

Standard Lock PDF to protect your documents

Instant Processing

Fast encryption powered by your browser

Other Tools

Try our other free tools!

PDF Compressor

Reduce your PDF file size by up to 90% while maintaining quality. Fast, secure, and completely free.

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PDF Combiner

Merge multiple PDF files into one document. Reorder pages, combine contracts, and create unified documents.

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PDF to Markdown

Convert PDF documents to editable Markdown format. Extract text, preserve formatting, and export images.

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PDF Splitter

Split PDF into multiple files. Select pages, split by range, or extract individual pages.

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Images to PDF

Convert JPG, PNG, and other images into PDF documents. Drag to reorder and customize page settings.

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PDF Watermark

Add text or image watermarks to protect and brand your PDFs. Customize position, opacity, and apply to selected pages.

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PDF Unlock

Remove passwords and restrictions from PDF files. Unlock for printing, copying, and editing.

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PDF to Word

Convert PDF files to editable Microsoft Word documents. Preserve formatting, tables, and images.

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Word to PDF

Convert Word documents (.doc, .docx) to PDF format. Perfect formatting with multiple quality options.

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Security you can bet your business on.

ISO 27001
ISO 27701
SOC 2 Type II Certified
GDPR
HIPAA

Experience the future of Enterprise data.

Book a personalized demo today to see LegittAI digital eSign, Review & Draft. Receive a free 30-day trial

Live Interactive Demo

Our experts will provide a live walkthrough suited to your use case.

Free Analysis and Consulting

We will review your contract process and suggest improvements.

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