Security at PDFBasic
Your files are protected at every step. Here is exactly how we do it.
Our Security Commitment
Security is not an afterthought at PDFBasic — it is the foundation of everything we build. We understand that PDF files often contain sensitive information: financial reports, legal contracts, medical records, and personal documents. That is why we have designed our entire platform around a zero-knowledge, privacy-first architecture. We cannot access your files, we do not store your files, and we encrypt everything in transit. Below, we explain each layer of protection in detail so you can use PDFBasic with complete confidence.
256-bit AES Encryption
Every file uploaded to PDFBasic is encrypted using 256-bit AES encryption — the same standard used by banks, governments, and military organizations worldwide. This encryption protects your files during upload, processing, and download. Even if data were intercepted during transfer, it would be completely unreadable without the encryption key. We use TLS 1.3 for all HTTPS connections, ensuring the strongest available transport security between your browser and our servers.
Zero-Knowledge Architecture
PDFBasic operates on a strict zero-knowledge principle. Our systems are designed so that no human — not even our own engineers — can access, view, or read the contents of your uploaded files. Processing is fully automated with no manual intervention at any stage. We do not log file names, file contents, or any metadata about your documents. Your files pass through our system and leave no trace behind.
Instant File Deletion
All uploaded files are permanently deleted from our servers immediately after processing completes. There is no retention period, no backup copies, and no archive. Once your processed file is ready for download, the original upload is already gone. If you close your browser or navigate away before downloading, the processed file is also deleted. We do not keep any copy of your files under any circumstances.
Browser-Based Processing
Many of our PDF tools process files entirely within your browser using WebAssembly technology. This means your files never leave your device at all — they are processed locally using your computer's own resources. For operations that require server-side processing, files are encrypted during transfer and deleted immediately after the operation completes. We always minimize the amount of data that leaves your device.
HTTPS-Only Connections
PDFBasic enforces HTTPS on every page and every API endpoint. We use HTTP Strict Transport Security (HSTS) with a two-year max-age policy and preload registration to ensure your browser always connects securely. All cookies are marked as Secure and HttpOnly. We also implement Content Security Policy (CSP), X-Frame-Options, X-Content-Type-Options, and other security headers to protect against XSS, clickjacking, and MIME-type attacks.
No Registration Required
PDFBasic does not require you to create an account, provide an email address, or share any personal information. You can use all of our tools completely anonymously. We believe that requiring personal data to use a PDF tool is unnecessary and creates an additional attack surface. By not collecting personal data, we eliminate the risk of that data being breached, leaked, or misused.
Our Security Commitments
Report a Security Issue
If you discover a security vulnerability, please report it responsibly to [email protected]. We take all reports seriously and will respond promptly.