Compress, merge, split, sign, redact, and protect your PDFs entirely in your browser. No uploads, no servers, no data collection.
0 bytes
uploaded to any server
100%
client-side processing
Free
no sign-up required
PDF Cloak is built from the ground up to process everything on your device. There is no server to hack, no database to breach, and no data to sell.
Your files never leave your device. Everything runs in your browser using WebAssembly.
No analytics, no tracking, no cookies. We don't know who you are, and we like it that way.
Every operation happens locally on your machine. No server, no middleman.
No hidden fees, no freemium traps, no sign-ups. Free to use, always.
Traditional PDF tools waste time uploading and downloading files. PDF Cloak uses WebAssembly to process everything at near-native speed, directly in your browser.
Core PDF operations run on compiled WebAssembly for near-native speed, right in your browser.
No upload/download cycle. Files are processed in milliseconds, not minutes.
Documents are persisted in your browser's private file system. No cloud quotas, no storage limits.
Handles large, multi-hundred-page documents without excessive memory usage thanks to streaming page rendering.
Apply annotations, redactions, signatures, and watermarks to the same document in a single session.
Undo, redo, delete, and deselect with keyboard shortcuts. Power-user friendly from day one.
A growing set of powerful PDF tools, all running locally in your browser via WebAssembly.
Reduce file size without losing quality
Extract pages or split into multiple files
Combine multiple PDFs into one document
Rotate pages to any orientation
Delete unwanted pages from your PDF
Drag and drop to rearrange page order
Encrypt your PDF with a secure password
Remove password from a protected PDF
Permanently remove sensitive content
Add digital signatures to your documents
Split scanned book spreads into individual pages
Select pages, create copies, insert after each page or append to end
Add text or image watermarks with precise positioning and styling
Highlight, underline, strikethrough, draw, and add shapes with full undo/redo
Select and replace text inline, edits show in the viewer and persist in the downloaded PDF
More tools coming soon. Can't find what you need?
Request a featureDeploy PDF Cloak behind your firewall. Your documents never leave your network. Perfect for legal, healthcare, finance, and government teams handling sensitive data.
Chat with your documents using a locally hosted LLM. Summarize, extract, and query without data leaving your network.
Convert Word, PowerPoint, Excel, and HTML files to PDF directly on your server.
Define sensitive patterns like SSNs or contract codes and auto-redact across thousands of documents.
Automate workflows: input folder to OCR to redaction to watermark to output. Fully deterministic.
Chain PDF operations via API endpoints, triggered from CRMs, ERPs, or any external system.
SAML/OIDC sign-on, SCIM directory sync, role-based teams, and tamper-evident audit logs.
No sign-up. No downloads. Just open the app and go.
Open PDF Cloak