Your files never leaveyour device
PDFflow processes everything locally in your browser. No uploads, no servers, no risk. Your sensitive documents stay exactly where they should — with you.
How local processing works
Our architecture is fundamentally different from other PDF tools
You select files
Files are loaded into your browser's memory. They never leave your computer.
Browser processes locally
Using PDF.js and pdf-lib, your browser handles all the heavy lifting. Zero server involvement.
Download result
The processed file is saved directly to your device. Close the tab and all temporary data is gone.
Security by design
We built PDFflow from the ground up with privacy as the core principle
100% Client-Side Processing
Your files are processed entirely in your browser using WebAssembly and JavaScript. No data ever touches our servers.
Files Stay on Your Device
Documents remain on your local machine throughout the entire process. We literally cannot see your files.
No File Uploads
Unlike other PDF tools, we don't upload your files to process them. Everything happens locally.
Zero Data Collection
We don't collect, store, or analyze the contents of your documents. Your data is your data.
HTTPS Everywhere
All connections are encrypted with TLS 1.3. Your browsing is secure from end to end.
No Server Storage
We have no servers storing your PDFs. When you close the tab, your files exist only on your device.
Compliance & certifications
Meeting the highest standards for data protection and security
GDPR Compliant
Full compliance with EU General Data Protection Regulation
CCPA Compliant
Meets California Consumer Privacy Act requirements
SOC 2 Type II
Enterprise-grade security controls (in progress)
ISO 27001
Information security management certification (planned)
PDFflow vs traditional PDF tools
| Feature | PDFflow | Others |
|---|---|---|
| Files uploaded to servers | Never | Always |
| Data collection | None | Extensive |
| Works offline | ✕ | |
| Third-party access risk | Zero | High |
| GDPR compliant by design | Varies |
Security FAQ
Do you store my files on your servers?
No. PDFflow processes all files directly in your browser. Your files never leave your device and are never uploaded to any server.
Can PDFflow employees see my documents?
No. Since files are processed locally in your browser, we have no technical ability to access your documents. We literally cannot see them.
What happens to my files after processing?
Nothing - they remain on your device. When you close the browser tab, any temporary data is cleared. We recommend saving your processed files to your preferred location.
Is PDFflow safe for confidential documents?
Yes. Our client-side architecture makes PDFflow ideal for sensitive documents like legal contracts, medical records, and financial statements.
Do you use third-party services that might access my files?
No. We don't use any third-party services for file processing. Analytics are limited to anonymous usage patterns and never include document contents.
Ready to process PDFs securely?
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