PurePDF
Send Files

PDF Tools That Never Upload Your Files

PurePDF processes your documents 100% inside your browser using WebAssembly. Your files stay on your device — nothing is ever transmitted to a server.

WebAssembly Processing

PDF operations run via pdfcpu compiled to Wasm — the same speed as native software, running entirely in your tab.

Zero Server Storage

No file remnants, no logs of document contents. PurePDF has a zero-knowledge architecture by design.

HIPAA-Friendly

Suitable for regulated environments. Patient data, financial records, and legal documents never leave the browser.

Privacy-First PDF Tools

Compress PDF
Reduce file size — all in your browser
Merge PDF
Combine PDFs without server upload
Split PDF
Extract pages locally, zero transmission
Protect PDF
Encrypt locally before sharing
Sign PDF
Electronic signatures, device-only processing
Redact PDF
Permanently remove sensitive data in-browser
Edit PDF
Annotate and edit without cloud access
Rotate PDF
Fix orientation — offline capable

PDF Tools by Audience

For HR Teams
Handle employee records, onboarding, and policy docs securely.
For Legal Professionals
Redact, sign, and archive privileged documents without server uploads.
For Students
Free tools for assignments, notes, and submissions — no watermarks.

Frequently Asked Questions

What does "no upload" mean for a PDF tool?

It means your PDF files are processed entirely inside your browser using WebAssembly technology. The file data never leaves your device and is never sent to any server. PurePDF uses the open-source pdfcpu engine to run directly in your browser tab.

Are browser-based PDF tools HIPAA compliant?

PurePDF's zero-upload architecture makes it suitable for HIPAA-regulated environments. Since patient data never leaves the browser, there is no transmission to third-party servers. However, you should consult your compliance officer for formal HIPAA BAA requirements.

How does WebAssembly allow PDF processing without uploading?

WebAssembly (Wasm) lets compiled native code run directly in the browser at near-native speed. PurePDF compiles pdfcpu (a Go-based PDF engine) to WebAssembly, so PDF operations like compression, merging, and splitting run as local computations inside your browser tab.

Which PDF tools on PurePDF are fully browser-local?

Compress PDF, Merge PDF, Split PDF, Rotate PDF, Crop PDF, Protect PDF, Sign PDF, Edit PDF, Watermark PDF, Redact PDF, Repair PDF, and all image conversion tools are fully browser-local. Word to PDF and PDF to Word use Adobe PDF Services on the server (sent over HTTPS).

Can I use these PDF tools for confidential legal or financial documents?

Yes. Because files never leave your browser, PurePDF is appropriate for processing contracts, financial statements, patient records, and other sensitive documents. No file remnants are stored on PurePDF servers.